451 — fortwo (2007-2015) — Climate Control

Workshop and reference excerpts for 451 — fortwo (2007-2015) in the Climate Control system.

210 excerpts from 2 sources.

Sources on this page

• 1998-2015 smart fortwo (450_451) - Technical & Service Reference.pdf — 8 excerpts
• 2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf — 202 excerpts

1998-2015 smart fortwo (450_451) - Technical & Service Reference.pdf

exeep

1998-2015 smart fortwo (450_451) - Technical & Service Reference.pdf · p. 82 · Applies to: 450, 451 · AR: AR83.30-P-5536SM

21.8.07 exeep W1 1r con oning us MODEL 450.3 /4 (except, 450.418) with CODE (129) Air conditioning Plus (with combination filter and outside temperatun indicator), smart & passion Sh<>wn on model 450.3 Condensation drain hose I& Dangeri Risk of explosion caused by welding Of soldering won< on closed air conditioning sy$lem. Rl$k of poisoning caused by Inhaling overheated refrigerant vapors. RJsx of Injury to skin and eyes caused by contad with ltquid refrigerant (2) Procedure for a damaged or leaky a~ condlllonlng system (2) Prote<:t air condftioning circuit and components from moisture when car,ying oct repafrwor1< LJJ Noies on handling refrigerant R134a lid Removing I Remove front CBS ~ Remove rear CBS 3 Remove underfloor panels 14 Release rear drive module 15 Pour contrast medium Into air conditioning sy$tem ~ Checking 6 Inspect condenser filling valve with air conditioning leak detector 7 Inspect Intake man~old filling valve with air conditioning leak detector 8 lnspe<:1 eondenser wijh air condijionlng leak t1Afllldnt Never perform welding work on or near a AS83 00-Z-0001-01A closed air CC<lCfrtionlng system. No smoking or open flames. Wear safety glasses and protective gloves. WO<k only In well ventila~ areas. Cany out repair work on the air condrtloning system circuit only after the syslem has been discharged. AH83 30-N-0004-01A AH83.30-N--0005-0IA AH83.JO.N-0003-01A AR88.00-P•l010SM W For vehicles with code (L27) Canada, the CBS rea.r end must be detached and. before removal, Ille left rear $1de-matt<er lamp and right rear side-marker I.amp must be dlsoonnecled from in-. Vehicles without code (P15) Brabus Isl AR88 20-P-1900SM Edrtlon (FFO) 0< wrthocrt code (P18) Complete light alloy wheels, BRABUS m0<1ooloek VI, 16117 lneh (front axle 175. rear axle 225) Vehicles with code (PIS) Brablod< VI, 16117 inch (front axle 175, rear axle 225) AR61 30-P-1001SM AR01 0O-P-30S0SM W Follow manufacturets fn,iructlons for alr conditioning leak dete<:lor and for leak dete<:10< agent Air eondhioner leak detector httn:J/notis.aftersale:s.da1mlerchnr,;.let.com W If leaks are found. the condenser fiUing valve must be replaced. Refeno: i Remove/install condense, filling valve AR83.30-P-5536SM W If lea.ks are found, the intake manifold filling valve must be replaced. Referto: I Removellnstad inlBJ<e manifold fining valve AR83 30-P-5535SM W If leaks are found, the condenser muSl be _ . __

Inspect expansion valve with air conditioning W tf leaks are found, the expansion valve

1998-2015 smart fortwo (450_451) - Technical & Service Reference.pdf · p. 83 · Applies to: 450, 451 · AR: AR83.55-P-5300SM, AR83.10-P-0100SO, AR83.10-P-0100SP, AR83.30-P-7811SM, AR83.30-P-7813SM (+5 more)

9 Inspect expansion valve with air conditioning W tf leaks are found, the expansion valve leak detector must be replaced. Refer to: i Remove/install expansion valve AR83.30-P-6520St,I 10 Inspect refrigerant compressor with air L!.l If leaks are found, the refrigerant conditioning leak detector compressor must be replaced. Refer to: i Remove/install refrigerant compressor AR83.55-P-5300SM 11 Inspect condensation water drain hose (1) W The condensation water drain hose (1) is with air conditioning Seak detector located on the right of the firewall. If leaks are found, the evaporator must be replaced. Referto: i Air recirculation unit, remove/Install Vehicles with code (LHD) Left-hand drive AR83.10-P-0100SO vehicle Vehicles with code (RHS) Right-hand drive AR83.10-P-0100SP vehicle 12 Inspect refrigerant lines with air conditioning L!.111 leaks are found, the refrigerant lines leak detector affected must be replaced. Refedo: l Remove/Install refrigerant lines at refrigerant AR83 30-P-781 DSM compressor Remove/install refrigerant line between AR83.30-P-7811SM ref,igerant compressor and evaporator Remove/ln.&.ttdl refrige,ant line between An83,3(H'-7812SM evaporator and condenser Remove/install refrigerant line between AR83.30-P-7813SM condenser and refrigerant compressor 13 Inspect pressure switch with air oonditioning L!.i If leaks are found, tile pressure switch leak detector must be replaced. Refer to: i Pressure.switch for refrlgerant compressor, AR83.30-P-8000SM remove/install llll ' Install 14 Position rear drive module AR01.00-P-3050SM 15 Install underfloor paneling AR61 30-P-1001SM 16 Install CBS rear L!.l For vehicles with code (L27) Canada, before installing the CBS rear end, the left rear side-mall<er lamp and right rear side- mall<er lamp must be connected !torn Inside, Vehicles without code (P15) Brabus 1st AR88.20-P-1900SM Edition (FFO) or without code (P18) Complete light alloy wheels, BRABUS monoblock VI, 16/17 inch (front axle 175, rear axle 225) Vehicles with code (P15) Br-abus 1st Edition AR88.20-P-1900SN (FFO) or with code (P18) Complete light alloy wlleels, BRABUS monoblock Vl, 16/17 inch {front axle 175, rear axle 225) 17 Install front CBS AR88.00-P-1010SM

Remove and install air inlet

1998-2015 smart fortwo (450_451) - Technical & Service Reference.pdf · p. 88 · Applies to: 450, 451 · AR: AR83.25-P-1401SM

AR83.25-P-1401SM 13 Install service grill on the right Workshop equipment WE58.40-Z-1006-19A Headlamp adjustment testing unit

Remove and install blower motor

1998-2015 smart fortwo (450_451) - Technical & Service Reference.pdf · p. 97 · Applies to: 450, 451 · AR: AR82.60-P-1100SM

28.8.02 1 Electrical plug connection 2 Solt M2 Blower motor P83.25--2153-06 bl~ Remove/Install 1 Remove left sound converter box AR82.60-P-1100SM 2 Disconnect electrical plug (1). 3 Unscrew screws (2) and remove blower motor (M2) 4 Install in the reverse order

•BA83.30-P-1004-01E

1998-2015 smart fortwo (450_451) - Technical & Service Reference.pdf · p. 120 · Applies to: 450, 451 · AR: AR83.30-P-6525SM, AR83.30-P-6525SN, AR83.30-P-1760SM, AR88.00-P-1010SM, AR88.00-P-1010CR

~ •BA83.30-P-1004-01E 29 Moisten coolant hose (3, 4, 8, 13) and install. W Coolant hose (8, 13) not on model 450.33 /34 /35 up to 10.01.00. 30 Insert rivet for left and right wheelhouse mount on front crossmember (5) 31 Connect horn (H2) connector Only for vehicles up to 31.12.98 32 Connect connector to outside temperature Only on vehicles with CODE (101) Air indicator temperature sensor (814) conditioning Plus. 33 1.;onnect connector to coolant fan motor (M4/2) ® Protect air conditioning circuit and AH83.30-N-0005-01A components from moisture when canying out repair work 34 Replace filter drier. ® Replace the fluid reservoir every time you open up the refrigeration circuit. When a receiver/drier is left open, the drier unit quickly becomes saturated with moisture, rendering it useless. Model up to 2. 1 .03 AR83.30-P-6525SM Model as of 3.1.03 AR83.30-P-6525SN 35 Evacuate and fill air conditioning system Only mode.1450.3 /4 except 450.418. AR83.30-P-1760SM On vehicles with CODE (101) Air conditioning Plus. 36 Add coolant and check coolant level AR20 00-P-1142SM 37 Install front CBS Model 450.3 /4 except 450.418 AR88.00-P-1010SM Model 450.418 AR88.00-P-1010CR ~ Front end assembly with front reinforcement Number Designation Model 450.3/4 BA62.30-P-1-B Bolt. upper crossmember mount Nm 24 8A62.30-P-100~2B Bolt on CMS front Nm 25 ~ Air conditioning system Number Designation Model 450.3/4 BA83.30-P-1004-01E Lines at capacitor Nm 10

Unplug connector (3) of cira,lalion ptJmp and

1998-2015 smart fortwo (450_451) - Technical & Service Reference.pdf · p. 160 · Applies to: 450, 451 · AR: AR83.70-P-0007SN

5 Unplug connector (3) of cira,lalion ptJmp and C<JIOff I, Insert resistance plug into cfre<Jlal!on pump W Resistance plug Is included in scope of plug-in pcsltion deliv6ry. Flt cover (1) onto heater una (2) 8 Replace circulation pump cap (4) against W To ease the assembly process, undo the clra,lation pump cap (4) Included In soope of retaining Clamp on the ciraJlatlon ptJmp and defivery rotate the ciraJiatlon pump. Finally, tighten the retaining clamp again. (I] Ensure that sealing ring is corredly seated. 9 lnstan cable h.amess W Without anti-theft alarm system, refer to: ~ A R In-stall stationary heater wiring harness AR83 70.P-0007SM (I] Wtth anti-theft alarm system, reler to: I ~ AR Install otatlonary heater wiring harness AR83.70-P-0007SN 10 Install Telffta.rt rec:eiv6r l l11 Ifnecesoary, referto: I l;.-Az Retrofitting Teteotart receiver AZ83. 70-P-0009SM 11 Install timer IW If necessary, refer to: I ,;irAz Retrofit timer AZ8J.70-P-5302-02SM 12,1 Undo bolts on diagonal strut (8) and remove diagonal strut (8) WOnly model 450.4. 13 S.CUre bracket (9) to bottom of battery box with pia.ile nut 14 Transfer hole pattern from bracket (9) 15 Otill 6,5 mm holes I Ill'.! Twist drill set •450589017000 Drill {eledrlc/pneumatlc) "WE58 40-Z-1001-0JA 16 Insert M6X20 bolls though battery box from above 17 Fasten bracket (10) uslng M6 collar nut onto heater unit (2) 18 Mount bracket (9) onto heater unit (2) I W Only use the provided EJOT PT special bolls to secure the bracket (9). 19 Fasten heater unit (2) onto bracket (10) W Only use the provided EJOT PT special bolls to secure the bracket (10). 20 Transfer hole pattern from bracket (10) 21 Remove heater unit (2) 22 DriU 9.1 mm hOle W Pay attention to parts below in the battery box. ~ Twist drill set "450589017000 Drill (electric/pneumatic) 'WE58AO.Z,1001-03A 123 Install M6 riveting nut 124 Connect 6-pln and 2.pln plugs of wiring IWSeer,g.A. harness to heater unit (2) 125 Mount heater unit (2) with EJOT bo~. W Only use the p,ovided EJOT PT special M6X20 mm bott and lod< washer boUS to secure the heater unit (2). 126 Screw combustion air intake muffler (14) onto combustion alr Intake pipe (15) 127 Route combustion air intake pipe (15) and faalen in place using cable ties 128 Iurlll 4 mm we.ter dratn hOte at IOWes.t polnt 01 I llil Twist drm set '4500<IW17000 combustion air intake pipe (15) Drill (electriclpneumatlc) "WE58.40-Z-100t-03A 129 Cut exhaust line to size I UJ On the exha.ust fine a,t an end piece of 120 mm (5) and on opposite side cut an end piece of 450 mm (7). (D For the end piece 120 mm (5) choose the side with metal hasp. l30 Mount pe<forated strip (6) to exhaust muffler I W Beforehand pull heal insulation over using M6x20 hexagon head bolt exha.ust muffler. 131 Fit insulation to end piece 450 mm (7) and then shape

jARB2.10-P-4735MCC

1998-2015 smart fortwo (450_451) - Technical & Service Reference.pdf · p. 327 · Applies to: 450, 451 · AR: AR82.10-P-4730MCC, AP82.10-P-8260MCC

MoOEL 451.314 ~djust headlamps 1 Cap 2 Control lever E1 Left front headlamp unit E2 Right front headlamp unit !<,I Removal , Check ... ungs of left front lamp unit (E1) and right front lamp unit (E2) r...-AP Ched< and correct the adjustment of the headlamps III Adjusting headlamps when driving abroad 12 Remove left front lamp unit (E1) and right front lamp unit (E2) 13 Remove cap (1) from left front lamp unit (E1) and from right front lamp unit (E2) Adjust 14 Adjust left front lamp unit (E1) and right front lamp unit (E2) at adjustment lever (2) for right-llandlleft-hand traffic (arrow) iig . Install 5 Install cap (1) at left front lamp unit (E1) and at right front lamp unit (E2) 6 Install left front lamp unit (E1) and right front lamp unit (E2) 7 Check settings of left front lamp unit (E1) and ~1'P right front lamp unit (E2) Chad< and correct the adjustment of •the ill headlamps Adjusting headlamps When driving abroad 121.8.07 P82.1~597-06 AP8210-P-8260MCC AH82.10-P-0001-01MCC AR82.10-P-4730MCC I W Adjustment lever (2) must latch in the relevant end position. AR8210-P-4730MCC AP82.10-P-8260MCC AH82. t0-P-0001-01MCC

Shown on vehicle with code (V07) Front

1998-2015 smart fortwo (450_451) - Technical & Service Reference.pdf · p. 338 · Applies to: 450, 451 · AR: AR82.25-P-4726MCC

fog lamps (FFO) 1 FrontCBS 11 Bolt 12 Catch lollel Remove/install 1 Remove antenna rod 2 Remove additional tum signal lamps 3 Open left and right door, press edge guard (5) to side in area of left and right tender covering (3) on both sides and remove expansion clip (4). 4 Slightly slide left and right fender covering (3) upward and remove. 5 Unscrew bolts (6, 7) 6 Unscrew bolts (2) from front CBS ( 1 ). 17 Remove longttudinal member paneling (8). 18 Remove expansion clip (9) in area of left and right door hinge. 9 Unscrew bolts (10) located behind left and right longitudinal member paneling (8) from front CBS (1 ). 10 Unscrew bolts (11) from front CBS (1). 11 Loosen catches (12) on CBS front end (1) and remove CBS front end (1) with aid of helper. 12 tnstall in the reverse order P88.00-2342•06 I I AR82.25-P-4726MCC fill tnst.allatlon: Check whether guide sleeve on bolt (7) is seated correctJy. AR88.80-P-tiOO0MCC W Lay front CBS (1) down on suttable subsurface.

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf

Remove left front lamp unit

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1018 · Applies to: 450, 451, 452, 454 · AR: AR82.10-P-4730MCC, AR82.10-P-4730MCU, AR82.62-P-1000MCC

3 Remove left front lamp unit (E1) * not for USA AR82.10-P-4730MCC * for USA only AR82.10-P-4730MCU 4 Adjust the left front seat to the rear

5 Unclip left tweeter from instrument panel and place to one side with electrical line connected Vehicles up to 30.8.10 with code (C17) Sound package (2 tweeters, 2 bass reflex boxes and diplexer) (FFO) orVehicles with code (C54) Sound system 2 AR82.62-P-1000MCC 6 Unclip SAM control unit (N10/10) in the rear area (arrow A) and fold down forwards

7 Remove screws/bolts (11) and carefully lower SAM control unit (N10/10) until electrical connectors are accessible

Install

8 Retrofit electrical wiring harness (3) for daytime running lights headlamp (1)

AN82.10-P-0100- 01MCC Wiring harness repair kit, basic 000589139900 Expanding pliers 450589123700 Puller aid *450589256300 9 Tighten SAM control unit (N10/10) with screws/bolts (11)

10 Clip in SAM control unit (N10/10) in rear area (arrow A)

11 Clip left tweeter into instrument panel Vehicles up to 30.8.10 with code (C17) Sound package (2 tweeters, 2 bass reflex boxes and diplexer) (FFO) orVehicles with code (C54) Sound system 2 AR82.62-P-1000MCC 12 Retrofit daytime running lights control unit (8) Cordless drill/driver gotis://G_58.0_01.1 AN82.10-P-0100- 02MCC 13 Retrofit daytime running lights headlamp (1) in CBS front end (2) Before installation of the daytime running lights headlamps (1), the primed installation frames (5) are to be painted according to customer request. AN82.10-P-0100- 04MCC

Install left front lamp unit (E1)

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1019 · Applies to: 450, 451, 452, 454 · AR: AR82.10-P-4730MCC, AR82.10-P-4730MCU, AR88.00-P-1010MCC, AR54.10-P-0003MCC

14 Install left front lamp unit (E1) * not for USA AR82.10-P-4730MCC * for USA only AR82.10-P-4730MCU 15 Install CBS front end (2)

AR88.00-P-1010MCC 16 Connect ground cable to battery

AR54.10-P-0003MCC 17 Place certification in the vehicle Only for Europe.

Use for daytime running lamps, certificate * Applies to Europe only OF82.10-P-1000-01A Fig 3: Identifying Wiring Harness Repair Kit, Basic (000 589 13 99 00) Courtesy of MERCEDES-BENZ OF NORTH AMERICA. Fig 4: Identifying Expanding Pliers (450 589 12 37 00) Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

MAINTENANCE > CHECK AND CORRECT THE ADJUSTMENT OF THE HEADLAMPS -

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1025 · Applies to: 450, 451, 452, 454 · AR: AP82.10-P-8260MCU

AP82.10-P-8260MCU > Shown on vehicle with code (V07) Front fog lamps (FFO) Fig 1: Identifying Kink Line And Central Mark On Horizontal Division Mark Courtesy of MERCEDES-BENZ OF NORTH AMERICA. Fig 1: Identifying Adjustment Screws Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

removed. See: ↓

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1028 · Applies to: 450, 451, 452, 454 · AR: AP82.35-P-8210MCC

Remove/install lamp unit AR82.10-P- 4730MCU 14 Install left front lamp unit (E1) and right front lamp unit (E2) If the rivet (3) above the adjustment screw (vertical) (1) has been removed. AR82.10-P- 4730MCU 15 Adjust left low beam (E1e2) or right low beam (E2e2) at the adjustment screw (vertical) (1) If the left low beam (E1e2) or right low beam (E2e2) has to be adjusted in the vertical direction. AP82.10-P-8260- 05MCC 16 Switch on left front fog lamp (E5/1) and right front fog lamp (E5/2) On vehicles with code (V07) Front fog lamps (FFO)

17 Check adjustment for left fog lamp (E5/1) and right fog lamp (E5/2), correct if necessary On vehicles with code (V07) Front fog lamps (FFO) AP82.10-P-8260- 04MCC Install

18 Clip the expanding rivet (4) above the adjustment screw (vertical) (1) into the left front lamp unit (E1) or right front lamp unit (E2) If the rivet (3) or expanding rivet (4) above the adjustment screw (vertical) (1) has been removed.

PARTS ORDERING NOTES Part no. Designation Quantity DG 88 (see EPC) Expanding rivet 2 MAINTENANCE > WINDSHIELD WASHER SYSTEM - INSPECT FLUID LEVEL, ADJUST TO CORRECT LEVEL - AP82.35-P-8210MCC > MODEL 451.3/4 Fig 1: Locating Windshield Washer System Reservoir Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Checking

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1029 · Applies to: 450, 451, 452, 454 · AR: AP82.35-P-8252MCC

1 Remove maintenance flap

2 Check and if necessary correct the fluid level in the re ervoir of the windshield washer system (1) Refer to table on package for mi ing ratio.

Windshield washer fluid concentrate Sheet 371.0 BB00.40-P-0371- 00A MAINTENANCE > WINDSHIELD WIPERS, WINDSHIELD WASHER SYSTEM - OPERATIONAL INSPECTION - AP82.35-P-8252MCC > MODEL 451.3/4 Fig 1: Locating Front Wiper Blades And Windshield Washer Nozzle Courtesy of MERCEDES-BENZ OF NORTH AMERICA. Fig 2: Identifying Rear Window Windshield Washer Nozzle And Wiper Blade Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

the rear window windshield

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1031 · Applies to: 450, 451, 452, 454 · AR: AR82.00-Z-9451CA, AR82.10-P-4735MCC, AR82.35-P-6975MCC, AR82.30-P-6100MCC, AR82.25-P-4726MCC (+5 more)

washer nozzle (3) and adjust if necessary rear window windshield washer nozzle (3) cannot be aligned with a point, as it moves at the same time as the wiper arm. It must spray in the center area on the rear window in front of the rear wiper blade (4). 8 Check rear wiper blade (4) In case of model 451.3 Inspect rubber lip for hardness and splitsIf necessary: ↓Replace rear wiper blade (4). subject to separate repair order.

Replace wiper blade AR82.30-P- 6251MCC TESTING & REPAIR > TESTING AND REPAIR WORK: SMART: ELECTRICAL SYSTEM BODY - AR82.00-Z-9451CA > MODEL 451 Adjust headlamps MODEL 451.3/4 AR82.10-P-4735MCC Adjust spray nozzles of windshield washer system MODEL 451.3/4 AR82.35-P-6975MCC Remove and install wiper arm MODEL 451.3/4 AR82.30-P-6100MCC Remove/install additional turn signal lamp MODEL 451.3/4 AR82.25-P-4726MCC Remove/install antenna MODEL 451... AR82.70-P-8951MCC Remove/install antenna cable MODEL 451... AR82.62-P-1200MCC Remove/install AUX jack MODEL 451.3/4 up to 30.8.10 with CODE (41Z) AUX jack AR82.60-P-1026MCC Remove/install bass module speaker MODEL 451... AR82.62-P-7839MCC Remove/install center high-mounted stop lamp MODEL 451.3/4 AR82.10-P-5375MCC Remove/install fog lamp MODEL 451.3/4 with CODE (V07) Front fog lamps (FFO) AR82.10-P-5103MCC Remove/install fog lamp MODEL 451.3/4 with CODE (V07) Front fog lamps (FFO) AR82.10-P-5103MCU Remove/install front dome lamp MODEL 451.3/4 AR82.20-P-0110MCC Remove/install front dome lamp MODEL 451.3/4 AR82.20-P-0110MCU Remove/install front door speakers in mirror triangle MODEL 451.3/4 with CODE (C17) smart surround sound system AR82.62-P-7850MCC

Remove/install global positioning

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1032 · Applies to: 450, 451, 452, 454 · AR: AR82.85-P-0002MCC, AR82.10-P-4730MCC, AR82.10-P-4730MCU, AR82.10-P-5161MCC, AR82.62-P-7845MCC (+5 more)

system (GPS) antenna MODEL 451.3/4 as of 31.8.10 with CODE (527) High-Line radio AR82.85-P-0002MCC Remove/install lamp unit MODEL 451.3/4 AR82.10-P-4730MCC Remove/install lamp unit MODEL 451.3/4 AR82.10-P-4730MCU Remove/install license plate lamps MODEL 451.3/4 AR82.10-P-5161MCC Remove/install loudspeakers in front doors MODEL 451... AR82.62-P-7845MCC Remove/install media interface MODEL 451... AR82.60-P-1031MCC Remove/install radio MODEL 451... AR82.60-P-7502MCC Remove/install radio MODEL 451... AR82.60-P-7502MCU Remove/install rain/light sensor MODEL 451.3/4 with CODE (V54) Rain/light sensor AR82.30-P-7800MCC Remove/install rear window wiper motor MODEL 451.3 AR82.30-P-6900MCC Remove/install speaker in the side paneling (rear) MODEL 451.3/4 with CODE (C17) smart surround sound system AR82.62-P-7837MCC Remove/install spray-nozzle for rear window MODEL 451.3 AR82.35-P-7338MCC Remove/install tailgate wiper arm MODEL 451.3 AR82.30-P-6910MCC Remove/install taillamp MODEL 451.3/4 AR82.10-P-4905MCC Remove/install tweeter MODEL 451... AR82.62-P-1000MCC Remove/install washer fluid reservoir of windshield washer system MODEL 451.3/4 AR82.35-P-6000MCC Remove/install washer fluid reservoir of windshield washer system MODEL 451.3/4 AR82.35-P-6000MCU Remove/install windshield washer nozzle MODEL 451.3/4 AR82.35-P-6970MCC Remove/install windshield washer system pump MODEL 451.3/4 AR82.35-P-6002MCC Remove/install windshield washer system pump MODEL 451.3/4 AR82.35-P-6002MCU Remove/install wiper motor MODEL 451.3/4 AR82.30-P-6800MCC Remove/install wiper motor MODEL 451.3/4 AR82.30-P-6800MCU Remove/install wiper system MODEL 451.3/4 AR82.30-P-6400MCC Remove/install wiper system MODEL 451.3/4 AR82.30-P-6400MCU Replace wiper blade MODEL 451.3/4 AR82.30-P-6251MCC TESTING & REPAIR > REMOVE/INSTALL LAMP UNIT - AR82.10-P-4730MCU >

Remove/install

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1034 · Applies to: 450, 451, 452, 454 · AR: AR82.10-P-5103MCU

1 Remove CBS rear end (1) AR88.20-P- 1900MCC 2 Detach retaining clip in marked area (arrows A) from CBS rear end (1)

3 Carefully fold down left taillamp (E3) or right taillamp (E4), detach from bracket (arrows B) and remove

4 Install in the reverse order

TESTING & REPAIR > REMOVE/INSTALL FOG LAMP - AR82.10-P-5103MCU > MODEL 451.3/4 with CODE (V07) Front fog lamps (FFO) Fig 1: Identifying Taillamps And CBS Rear End Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

TESTING & REPAIR > REMOVE/INSTALL LICENSE PLATE LAMPS - AR82.10-P-5161MCC

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1036 · Applies to: 450, 451, 452, 454 · AR: AR82.10-P-5161MCC, AR82.10-P-5375MCC

MODEL 451.3/4

Remove/install 1 Release catch (arrow) and lead left license plate lamp (E19/1) or right license plate lamp (E19/2) downward out of rear-end door until the electrical connectors (1) are accessible 2 Disconnect electrical connectors (1) and remove left license plate lamp (E19/1) or right license plate lamp (E19/2) 3 Install in the reverse order 4 Perform function test on left license plate lamp (E19/1) or right license plate lamp (E19/2) TESTING & REPAIR > REMOVE/INSTALL CENTER HIGH-MOUNTED STOP LAMP - AR82.10-P-5375MCC > MODEL 451.3/4 Fig 1: Identifying License Plate Lamps And Electrical Connectors Courtesy of MERCEDES-BENZ OF NORTH AMERICA. Fig 1: Identifying Center High-Mounted Stop Lamp, Screw And Electrical Connector Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Remove/install

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1037 · Applies to: 450, 451, 452, 454 · AR: AR82.20-P-0110MCU

1 Remove bolts (1) of center high-mounted brake lamp (E21) 2 Remove center high-mounted brake lamp (E21) until the electrical connector (2) is accessible 3 Disconnect electrical connector from center high-mounted brake lamp (E21) and remove center high-mounted brake lamp (E21) 4 Install in the reverse order 5 Perform function test of center high-mounted brake lamp (E21) TESTING & REPAIR > REMOVE/INSTALL FRONT DOME LAMP - AR82.20-P-0110MCU > MODEL 451.3/4

Remove/install

1 Unclip catch (2) of front interior lamp (E15/4) using a suitable tool Do not damage roof frame panel (1) by scratching it as it must otherwise be replaced. 2 Lead out front interior lamp (E15/4) from roof frame panel (1) until the electrical connector (3) is accessible

3 Disconnect electrical connector (3) and take off front interior lamp (E15/4)

4 Install in the reverse order

5 Perform function test on front interior lamp (E15/4)

TESTING & REPAIR > REMOVE/INSTALL ADDITIONAL TURN SIGNAL LAMP - AR82.25-P- 4726MCC > MODEL 451.3/4 Fig 1: Identifying Roof Frame Paneling, Electrical Connector, Front Interior Lamp And Catch Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Remove/install

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1038 · Applies to: 450, 451, 452, 454 · AR: AR82.30-P-6100MCC

1 Release catch (3) using snap-release tool and remove left additional turn signal lamp (E22/1) or right additional turn signal lamp (22/2) from CBS front (1) until holder (2) is accessible *452589016300 2 Rotate holder (2) counterclockwise by 90° and take out of left additional turn signal lamp (E22/1) or right additional turn signal lamp (E22/2) Installation: Ensure that the holder (2) is snapped into the left additional turn signal lamp (E22/1) or right additional turn signal lamp (E22/2).

3 Install in the reverse order

4 Perform function test on left additional turn signal lamp (E22/1) or right additional turn signal lamp (E22/2)

TESTING & REPAIR > REMOVE AND INSTALL WIPER ARM - AR82.30-P-6100MCC > Fig 1: Identifying Additional Turn Signal Lamps, CBS Front, Holder And Catch Courtesy of MERCEDES-BENZ OF NORTH AMERICA. Fig 2: Identifying Snap-Release Tool (452 589 01 63 00) Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

BA82.30-P-1002-

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1040 · Applies to: 450, 451, 452, 454 · AR: AR82.30-P-6251MCC, AR82.30-P-6400MCU

01F Nut for wiper arm on wiper shaft Nm 20 20 TESTING & REPAIR > REPLACE WIPER BLADE - AR82.30-P-6251MCC > MODEL 451.3/4 Shown on front wiper blades (2) on model 451.3

Remove/install

Risk of injury caused by moving parts that can pinch, crush or, in extreme cases even sever extremities. Always remove ignition key when working on windshield wiper mechanism. AS82.30- Z-0001- 01A 1 Fold up wiper arm (1), unclip catch (arrow A) from wiper blade (2), move wiper blade (2) in direction of arrow, unhook from guide (arrow B) and remove Do not allow wiper arm (1) to fold back, otherwise the window may be damaged. 2 Install in the reverse order

TESTING & REPAIR > REMOVE/INSTALL WIPER SYSTEM - AR82.30-P-6400MCU > Fig 2: Identifying Puller (001 589 38 33 00) Courtesy of MERCEDES-BENZ OF NORTH AMERICA. Fig 1: Identifying Wiper Arm And Blade Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

MODEL 451.3/4

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1041 · Applies to: 450, 451, 452, 454 · AR: AR82.30-P-6800MCU

Remove/install

1 Remove front module

AR62.30-P- 1575MCU 2 Disconnect electrical connector (2) from wiper motor (M6/1)

3 Remove bracket (3) with rubber grommet from wiper motor (M6/1)

4 Remove bolts (1) starting from the right and take off wiper system (4) Installation: Tighten bolts (1) starting from the left.

*BA82.30-P- 1007-01F 5 Install in the reverse order

6 Perform function test of wiper system (4) with wiper motor (M6/1)

WINDSHIELD WIPER Number Designation Model 451.3 Model 451.4 BA82.30-P-1007- 01F Bolt, wiper linkage to body Nm 10 10 TESTING & REPAIR > REMOVE/INSTALL WIPER MOTOR - AR82.30-P-6800MCU > Fig 1: Identifying Wiper System Components Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

MODEL 451.3/4

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1042 · Applies to: 450, 451, 452, 454 · AR: AR82.30-P-7800MCC

Remove/install

1 Remove front module

AR62.30-P- 1575MCU 2 Disconnect electrical connector (2) from wiper motor (M6/1)

3 Remove bracket (3) with rubber grommet from wiper motor (M6/1)

4 Remove bolts (1) starting from the right and take off wiper system (4) Installation: Tighten bolts (1) starting from the left.

*BA82.30-P- 1007-01F 5 Install in the reverse order

6 Perform function test of wiper system (4) with wiper motor (M6/1)

WINDSHIELD WIPER Number Designation Model 451.3 Model 451.4 BA82.30-P-1007- 01F Bolt, wiper linkage to body Nm 10 10 TESTING & REPAIR > REMOVE/INSTALL RAIN/LIGHT SENSOR - AR82.30-P-7800MCC > Fig 1: Identifying Wiper Motor Components Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

(B38) is protected from

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1044 · Applies to: 450, 451, 452, 454 · AR: AR82.35-P-6000MCU

soiling by means of a protective cap. The protective cap is clipped into the retaining collar (3). 6.2 Clean contact surface of rain sensor/light sensor (B38) on windshield Only if the windshield was not protected from dirt by a protective cap. The contact surface must be clean and free of grease.

7 Carefully pull off protective foil from new rain sensor/light sensor (B38) If the silicone pad on the optics of the rain sensor/light sensor (B38) is damaged or dirty, this must be replaced.

8 Insert rain sensor/light sensor (B38) into the retaining collar (3) The contact surfaces of the rain sensor/ light sensor (B38) must not be damaged or dirty, as this will result in the rain sensor/light sensor (B38) being unusable.

9 Clip in retaining clip (5) for rain sensor/light sensor (B38) at retaining collar (3) (arrows)

10 Insert cable routing (2) into cover (1)

11 Connect electrical connector (4)

12 Clip cover (1) into retaining collar (3) Carefully clip in cover (1) to prevent the retaining clips from breaking.

13 Install inside rearview mirror * for USA only AR68.40-P- 0001MCU except USA AR68.40-P- 0001MCC 14 Carry out function check

TESTING & REPAIR > REMOVE/INSTALL WASHER FLUID RESERVOIR OF WINDSHIELD WASHER SYSTEM - AR82.35-P-6000MCU > MODEL 451.3/4 Shown on model 451.3

Remove/install

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1045 · Applies to: 450, 451, 452, 454 · AR: AR82.35-P-6002MCU

1 Remove front module

AR62.30- P- 1575MCU 2 Suction off window washer fluid in washer fluid reservoir (1)

3 Unscrew nuts (2) from washer fluid reservoir (1) Installation: Replace self- locking nuts (2).

4 Remove washer fluid reservoir (1) until windshield washer fluid pump (M5/1) is accessible

5 Unclip windshield washer fluid pump (M5/1) from washer fluid reservoir (1) and place to one side with connected hoses and the electrical line Installation: Ensure that seal of windshield washer fluid pump (M5/1) is correctly seated on washer fluid reservoir (1).

6 Take off washer fluid reservoir (1)

7 Install in the reverse order

8 Fill washer fluid reservoir (1)

Windshield washer system - inspect fluid level, adjust to correct level AP82.35- P- 8210MCC 9 Perform tightness check of washer fluid reservoir (1)

10 Perform function check of windshield washer system

TESTING & REPAIR > REMOVE/INSTALL WINDSHIELD WASHER SYSTEM PUMP - AR82.35-P-6002MCU > MODEL 451.3/4 Fig 1: Identifying Windshield Washer Fluid Pump, Washing Water Reservoir And Nut Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Install in the reverse order

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1047 · Applies to: 450, 451, 452, 454 · AR: AR82.35-P-6975MCC

10 Install in the reverse order

11 Fill washer fluid reservoir (1)

Windshield washer system - inspect fluid level, adjust to correct level AP82.35- P- 8210MCC 12 Perform tightness check of washer fluid reservoir (1)

13 Perform function check of windshield washer system

TESTING & REPAIR > REMOVE/INSTALL WINDSHIELD WASHER NOZZLE - AR82.35-P- 6970MCC > MODEL 451.3/4

Remove/install

1 Remove paneling (1) from center piece in front of windshield AR88.00-P- 2792MCC 2 Carefully unclip windshield washer nozzle (2) from paneling (1) from the rear using suitable pliers and take off

3 Install in the reverse order

TESTING & REPAIR > ADJUST SPRAY NOZZLES OF WINDSHIELD WASHER SYSTEM - AR82.35-P-6975MCC > MODEL 451.3/4 Fig 1: Identifying Windshield Washer Nozzle And Trim Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Adjust

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1049 · Applies to: 450, 451, 452, 454 · AR: AR82.60-P-1031MCC

Risk of injury caused by moving parts that can pinch, crush or , in extreme cases, even sever extremities. Keep all body parts and limbs away from moving mechanical components. AS00.00-Z-0009- 01A 1 Move front wiper arms (5) from the parked position To do this, turn on ignition (circuit 15 or circuit 15R) and turn wiper switch to position "2". When the front wiper arms (5) are close to the reversing position, switch off ignition and turn wiper switch back to position "0".

2 Disconnect electrical connector (1) from wiper motor (M6/1)

3 Adjust windshield washer nozzle for windshield (2) according to the shown diagram

4 Adjust windshield washer nozzle for rear window (3) in case of MODEL 451.3 To prevent scratching the rear window, do not allow rear wiper blade (4) to run dry. The windshield washer nozzle for rear window (3) cannot be aligned to certain points since it moves along with the wiper arm. It should spray onto the rear window in the center area in front of the rear wiper blade (4).

TESTING & REPAIR > REMOVE/INSTALL MEDIA INTERFACE - AR82.60-P-1031MCC > 13.7.10 MODEL 451.3/4 as of 31.8.10 with CODE (516) RADIO WITH USB INTERFACE with CODE (527) High-Line radio

Remove/install

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1050 · Applies to: 450, 451, 452, 454 · AR: AR82.60-P-7502MCU

1 Remove radio AR82.60-P- 7502MCC 2 Unclip media interface support (3) using a suitable screwdriver from the right lower section of the instrument panel (1)

3 Route wiring harness (2) towards glove box and out of the right lower section of the instrument panel (1)

4 Install in the reverse order

5 Perform function test of media interface

TESTING & REPAIR > REMOVE/INSTALL RADIO - AR82.60-P-7502MCU > MODEL 451.3/4 with CODE (C50) smart radio 10, with CODE (C57) smart radio 9, with CODE (516) RADIO WITH USB INTERFACE, with CODE (527) High-Line radio MODEL 541.3 with CODE (P02) car2go with instrument panel up to production date 30.8.10 Shown on vehicle with code (C57) smart radio 9 Fig 1: Identifying Media Interface Support Components Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

WITH USB INTERFACE

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1052 · Applies to: 450, 451, 452, 454 · AR: AR82.85-P-2001MCG, AR82.62-P-1000MCC

without code (P02) car2go 4 Remove screws (2) from smart radio 9 (A2/1) With code (516) RADIO WITH USB INTERFACE the radio is only screwed on using two screws (2).Rechargeable drill / screwdriver gotis://G_58.0_01.1

5 Pull smart radio 9 (A2/1) out of radio recess until electrical connectors (3) and antenna plug (4) are accessible With code (516) RADIO WITH USB INTERFACE the radio is fixed in the upper area into two side brackets.

6 Detach electrical connectors (3) and antenna plug (4) from smart radio 9 (A2/1) The actual number of connectors (3) will depend on the amount of equipment installed.

7 Remove smart radio 9 (A2/1)

8 Remove Subscriber Identification Module (SIM) from communication unit In vehicles with code (P02) car2go when replacing the smart radio car2go AR82.85-P-2001MCG 9 Install in the reverse order

10 Read out fault memory, erase if necessary

AD00.00-P-2000- 04MCC 11 Enter radio code On vehicles with code (527) High-Line radio

12 Adapt audio settings On vehicles with code (527) High-Line radio Notes on audio settings AH82.60-P-0002-01MCC 13 Perform function test of smart radio 9 (A2/1)

TESTING & REPAIR > REMOVE/INSTALL TWEETER - AR82.62-P-1000MCC > MODEL 451.3/4 up to 30.8.10 with CODE (C17) Sound package (2 tweeters, 2 bass reflex boxes and diplexer) (FFO) MODEL 451.3/4 with CODE (C54) Sound system 2

Remove/install

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1053 · Applies to: 450, 451, 452, 454 · AR: AR82.62-P-1200MCC

1 Adjust left or right seat towards back

2 Unclip left tweeter (H4/33) or right tweeter (H4/34) from underneath out of bracket (2) on upper dashboard section (1) and lead downwards until the electrical connector is accessible Installation: The left tweeter (H4/33) or right tweeter (H4/34) must latch audibly into the bracket (2). 3 Disconnect electrical connector from left tweeter (H4/33) or right tweeter (H4/34) and remove left tweeter (H4/33) or right tweeter (H4/34)

4 Install in the reverse order

TESTING & REPAIR > REMOVE/INSTALL ANTENNA CABLE - AR82.62-P-1200MCC > MODEL 451.3/4 with CODE (C08) Radio preinstallation incl. rod antenna (FFO) with CODE (460) Canada version with CODE (494) USA version with CODE (498) Japan version Shown on vehicle with code (494) USA version Fig 1: Identifying Tweeters, Dashboard Top Section And Bracket Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Removing

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1055 · Applies to: 450, 451, 452, 454 · AR: AR82.10-P-4730MCC, AR82.10-P-4730MCU, AR82.60-P-7502MCC, AR82.60-P-7502MCU

1 Remove left front headlamp unit * not for USA AR82.10-P-4730MCC * for USA only AR82.10-P-4730MCU 2 Remove radio With code (C50) smart radio 10 orCode (C57) smart radio 9 orCode (516) RADIO WITH USB INTERFACE or code (527) High-Line radio

• not for USA AR82.60-P-7502MCC
• for USA only AR82.60-P-7502MCU 3 Remove antenna cable (1) from antenna base (2)

4.1 Remove antenna cable (1) from body in area of upper door hinge Without code (460) Canada version, without code (494) USA version or without code (498) Japan version

4.2 Detach antenna amplifier (3) from body With code (460) Canada versionWith code (494) USA version orWith code (498) Japan version

5 Remove adhesive tape (4) from protective tube (5)

Fig 2: Identifying Antenna Cable Components (2 Of 2) Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

using solder connector

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1057 · Applies to: 450, 451, 452, 454 · AR: AR82.10-P-4730MCC, AR82.10-P-4730MCU, AR82.60-P-7502MCC, AR82.60-P-7502MCU, AR82.62-P-7837MCC

(10) connector (10) with Ø 2.4 mm. 16 Push protective tube (5) forward and fix in place u ing uitable in ulation tape

17 Fix antenna cable (1) in place at main wiring harness using suitable insulation tape.

18 Route antenna cable (1) along main wiring harness toward radio recess and fasten using cable tie (11)

19 Fix antenna cable (1) in place at main wiring harness in radio recess using suitable insulation tape

20 Seal grommet (8) using suitable sealant

21 Install left front lamp unit * not for USA AR82.10-P-4730MCC * for USA only AR82.10-P-4730MCU 22 Install radio With code (C50) Smart Radio 10 orCode (C57) smart radio 9 orCode (516) RADIO WITH USB INTERFACE or code (527) High-Line radio

• not for USA AR82.60-P-7502MCC
• for USA only AR82.60-P-7502MCU TESTING & REPAIR > REMOVE/INSTALL SPEAKER IN THE SIDE PANELING (REAR) - AR82.62-P-7837MCC > Fig 3: Identifying Expanding Pliers (450 589 12 37 00) Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Remove/install

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1060 · Applies to: 450, 451, 452, 454 · AR: AR82.62-P-7850MCC

1 Remove door paneling

AR72.18- P- 1000MCC 2 Carefully cut into inner door foil (1), as shown, using a knife (arrow) until left front speaker (H4/9) or right front speaker (H4/10) is accessible Installation: Repair inner door foil (1) using a suitable adhesive fabric tape (4).

3 Disconnect electrical connector (2) from left front speaker (H4/9) or right front speaker (H4/10)

4 Remove bolts (3) from left front speaker (H4/9) or right front speaker (H4/10) and remove left front speaker (H4/9) or right front speaker (H4/10)

5 Install in the reverse order

6 Perform function test of left front speaker (H4/9) or right front speaker (H4/10)

TESTING & REPAIR > REMOVE/INSTALL FRONT DOOR SPEAKERS IN MIRROR TRIANGLE - AR82.62-P-7850MCC > MODEL 451.3/4 with CODE (C17) smart surround sound system Fig 1: Identifying Front Door Loudspeaker Components Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Remove/install

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1061 · Applies to: 450, 451, 452, 454 · AR: AR82.70-P-8951MCC

1 Lower crank window 2 Unscrew bolt (2) from mirror triangle cover (1). 3 Release covering for mirror triangle (1) from holders (arrows) and move far enough until the left tweeter (H4/33) or right tweeter (H4/34) is accessible 4 Detach electrical connector (3) from left tweeter (H4/33) or right tweeter (H4/34) and remove covering from mirror triangle (1) 5 Unclip and remove left tweeter (H4/33) or right tweeter (H4/34) by turning in clockwise direction from covering for mirror triangle (1) 6 Install in the reverse order 7 Perform function test of left tweeter (H4/33) or right tweeter (H4/34) TESTING & REPAIR > REMOVE/INSTALL ANTENNA - AR82.70-P-8951MCC > MODEL 451.3/4 with CODE (C08) Radio preinstallation incl. rod antenna (FFO) with CODE (C50) smart radio 10 with CODE (C57) smart radio 9 Fig 1: Identifying Tweeters, Mirror Triangle Cover, Electrical Connector And Screw Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

TESTING & REPAIR > REMOVE/INSTALL GLOBAL POSITIONING SYSTEM (GPS)

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1063 · Applies to: 450, 451, 452, 454 · AR: AR82.85-P-0002MCC, AS82.00-Z-9999ZZ

ANTENNA - AR82.85-P-0002MCC > MODEL 451.3/4 as of 31.8.10 with CODE (527) High-Line radio Remove/install

1 Remove smart Premium radio * not for USA AR82.60- P- 7502MCC * for USA only AR82.60- P- 7502MCU 2 Detach holder (1) of wiring harness for Global Positioning System (GPS) antenna (A2/23)

3 Unclip Global Positioning System (GPS) antenna (A2/23) from below and remove from upper section on the instrument panel Installation: The metal plate for the Global Positioning System (GPS) antenna (A2/23) must face downwards.

4 Install in the reverse order

SAFETY PRECAUTIONS > SAFETY INFORMATION: ELECTRICAL SYSTEM BODY - AS82.00-Z-9999ZZ > MODEL all Fig 1: Identifying Global Positioning System (GPS) Antenna And Bracket Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Burns

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1066 · Applies to: 450, 451, 452, 454 · AR: AZ82.10-P-0003MCC, AR82.10-P-5375MCC

Treat burns with plenty of cold water and cover with sterile dressings. Consult a physician. Eye contact Rinse eye immediately for several minutes, preferably with lukewarm water while keeping the eyelid open. Consult an eye doctor. Skin contact Immediately remove any wetted clothing. Wash off window washing fluid splashed onto skin thoroughly with plenty of soap and water. Swallowing Do not induce vomiting. Give plenty of water to drink in small amounts at a time. Keep the person warm and comfortable at a quiet place. Consult a physician. Inhalation of vapors Take the affected person out into the fresh air. If the situation may result in the person becoming unconscious, the patient must be at rest and transported in recovery position. If necessary, apply artificial respiration to affected person and ensure adequate supply of oxygen, warmth and quietness. Consult a physician. RETROFITTING & CONVERSION > RETROFIT CENTER HIGH-MOUNTED STOP LAMP - AZ82.10-P-0003MCC > MODEL 451.3/4 Remove

1 Remove center high- mounted brake lamp (E21)

AR82.10-P-5375MCC Install

2 Install new center high- mounted brake lamp (E21) Installation: Slide foam grommet (2) over the electrical connector (1) of the AR82.10-P-5375MCC Fig 1: Identifying Center High-Mounted Stop Lamp, Electrical Connector And Foam Grommet Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Perform function test on left

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1070 · Applies to: 450, 451, 452, 454 · AR: AP82.10-P-8260MCU, AP82.10-P-8260MCC

7 Perform function test on left front fog lamp (E5/1) and right front fog lamp (E5/2)

8 Adjust left fog lamp (E5/1) and right fog lamp (E5/2) * For USA only AP82.10-P-8260MCU * Not for USA AP82.10-P-8260MCC 9 Add special equipment to the vehicle data card and to the online vehicle data card Add code (V07) Front fog lamp (FFO).

PARTS ORDERING NOTES Part no. Designation Quantity DG 82 (see EPC) Upper control panel switch 1 DG 82 (see EPC) Left front fog lamp 1 DG 82 (see EPC) Right fog lamp 1 DG 88 (see EPC) Left front fog lamp cover 1 DG 88 (see EPC) Right front fog lamp cover 1 RETROFITTING & CONVERSION > RETROFIT AMBIANCE ILLUMINATION WIRING HARNESS - AZ82.20-P-0010-01MCC > Connection diagram Fig 1: Identifying Wiring Harness Repair Kit, Basic (000 589 13 99 00) Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Removing

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1133 · Applies to: 450, 451, 452, 454 · AR: AR82.60-P-7502MCC, AR82.60-P-7502MCU, AR68.30-P-4450MCC, AR68.30-P-4450MCU, AR68.30-P-4450MCO (+5 more)

1 Move front passenger seat toward rear

2 Remove smart radio 9 (A2/1), smart radio 10 (A2/2) or smart Entry radio (A2/3) * not for USA AR82.60-P-7502MCC * for USA only AR82.60-P-7502MCU 3 Remove front roof frame paneling Model 451.3

• not for USA AR68.30-P-4450MCC

• for USA only AR68.30-P-4450MCU Model 451.4

• not for USA AR68.30-P-4450MCO

• for USA only AR68.30-P-4450MCV 4 Remove paneling on right A- pillar
• not for USA AR68.30-P-4050MCC
• for USA only AR68.30-P-4050MCU 5 Remove additional instrument On vehicles up to 30.8.10 with code (V31) Cockpit clock and tachometer package AR54.30-P-6080MCC Vehicles as of 31.8.10 with code (V31) Cockpit and tachometer package AR54.30-P-6080MCF Fig 3: Routing Diagram For Handsfree System Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Vehicles up to 30.8.10with

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1135 · Applies to: 450, 451, 452, 454 · AR: AR82.60-P-7502MCC, AR82.60-P-7502MCU, AR68.30-P-4050MCC, AR68.30-P-4050MCU, AR68.30-P-4450MCC (+3 more)

code (41Z) AUX jack orwith code (C15) Navigation unit (DFO/FFO) orwith code (C60) Portable smart navigation system orwith code (C54) Sound system 2 AZ82.70-P-0005- 02MCD 11 Connect electrical wiring harness for Bluetooth module (1) to communications control unit (N4) In vehicles up to 30.8.10with code (41Z) AUX jack orwith code (C15) Navigation unit (DFO/FFO) orwith code (C60) Portable smart navigation system orwith code (C54) Sound system 2 The electrical wiring harness for Bluetooth module (1) is to be connected to slot intended for the handsfree system. AZ82.60-P-0021- 03MCC 12 Retrofit Bluetooth module (A34/7)

AZ82.70-P-0005- 04MCD 13 Install smart radio 9 (A2/1), smart radio 10 (A2/2) or smart Entry radio (A2/3) * not for USA AR82.60-P-7502MCC * for USA only AR82.60-P-7502MCU 14 Install trim at right A-pillar Ensure that electrical wiring harness for Bluetooth microphone (2) is not damaged by chafing, pinching or crushing as otherwise electrical wiring harness for Bluetooth microphone (2) must be replaced with Bluetooth microphone (B25/3).

• not for USA AR68.30-P-4050MCC

• for USA only AR68.30-P-4050MCU 15 Install front roof frame paneling Model 451.3

• not for USA AR68.30-P-4450MCC

• for USA only AR68.30-P-4450MCU Model 451.4

• not for USA AR68.30-P-4450MCO

• for USA only AR68.30-P-4450MCV 16 Retrofit push button for central operation (11) Agree on the exact position of the push button for central operation (11) with the customer before installation.

Remove

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1152 · Applies to: 450, 451, 452, 454 · AR: AR82.60-P-7502MCU, AR68.30-P-4050MCC, AR68.30-P-4050MCU, AR68.30-P-4450MCC, AR68.30-P-4450MCU (+1 more)

1 Remove mart radio 9 (A2/1), smart radio 10 (A2/2) or smart Entry radio * not for USA AR82 60 P 7502MCC * for USA only AR82.60-P-7502MCU 2 Remove paneling of right A- pillar * not for USA AR68.30-P-4050MCC * for USA only AR68.30-P-4050MCU Install

3 Retrofit iPhone-kit control unit

AZ82.70-P-0013- 02MCC 4 Retrofit iPhone kit wiring harness

AZ82 70 P 0013 01MCC 5 Retrofit iPhone-kit microphone

AZ82.70-P-0013- 03MCC 6 Install lining on right A-pillar * not for USA AR68.30-P-4050MCC * for USA only AR68.30-P-4050MCU 7 Install front roof frame paneling Model 451.3

• not for USA AR68.30-P-4450MCC

• for USA only AR68.30-P-4450MCU Model 451.4

• not for USA AR68.30-P-4450MCO Fig 2: Identifying Center Console Cover, Cover, Screw And External Audio Source Separation Point Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Remove

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1158 · Applies to: 450, 451, 452, 454 · AR: AR82.60-P-7502MCC, AR82.60-P-7502MCU, AR82.85-P-0002MCC, AR68.20-P-2350MCF

1 Remove smart Entry radio * not for USA AR82.60-P-7502MCC * for USA only AR82.60-P-7502MCU Install

2 Install GPS antenna (A2/23)

AR82.85-P-0002MCC 3 Install smart Premium radio (A2/4) * not for USA AR82.60-P-7502MCC * for USA only AR82.60-P-7502MCU 4 Install new center console cover (2)

AR68.20-P-2350MCF 5 Connect Star Diagnosis

AD00.00-P-2000- 04MCC 6 Enter special equipment on the vehicle data card and the online vehicle data card Add code (527) High- Line radio.

7 Disconnect Star Diagnosis

AD00.00-P-2000- 04MCC 8 Enter security code of smart Premium radio (A2/4), change if necessary The security code is set to "0000" by default at the factory. If the security code is to be changed, it must be

Fig 1: Identifying Operating Instructions, Center Console Cover, Smart Premium Radio And GPS Antenna Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

BASIC KNOWLEDGE > EXTERIOR LIGHTS, FUNCTION - GF82.10-P-0003MCU >

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1162 · Applies to: 450, 451, 452, 454 · AR: GF82.10-P-0003MCU

MODEL 451.3/4 The exterior lights comprise the following functions: Standing lights actuation Standing lights actuation Light warning Driving lights actuation Low beams High beam and headlamp flasher Daytime running lights (with code (K06) Daytime running lights) Fig 1: Exterior Lights Block Diagram Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Right front fog lamp (E5/2) (with code (V07) (Front fog lamps (FFO))

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1164 · Applies to: 450, 451, 452, 454 · AR: PE82.10-P-2000MCU, PE82.10-P-2220MCU, GF82.10-P-3000MCU, GF82.10-P-2009MCU, GF82.10-P-3008MCU (+4 more)

Front fog lamp actuation Function requirements Standing lights or driving lights on Circuit 15 On Function The request is made via the front fog lamps switch (S6/1s8) in the cockpit switch group and is read in by the SAM control unit, which actuates the front fog lamps. The feedback is provided by the LED integrated in the front fog lamps switch. Backup lamp actuation Function requirement Circuit 15 On Function The selector lever module control unit (N15/5) reads in the status of the integral backup light switch and actuates the left backup light (E3e3) and the right backup light (E4e3) when reverse gear is engaged.

Exterior lights, location of components

GF82.10-P-0003- 02MCU

Block diagram of exterior lights

GF82.10-P-0003- 03MCU Exterior lights wiring diagram

PE82.10-P-2000MCU Wiring diagram of brake lights and turn signal/hazard warning lights

PE82.10-P-2220MCU

Standing light actuation, function

GF82.10-P-3000MCU

Headlamp control, function

GF82.10-P-2009MCU

Turn signal indicator actuation, function

GF82.10-P-3008MCU

Stop lamp actuation, function

GF82.10-P-3010MCU

Headlamp range adjustment (HRA) headlamp function

GF82.10-P-1001MCU

Ambient illumination actuation function For vehicles with code (V54) Rain/light sensor GF82.10-P-2013MCU BASIC KNOWLEDGE > CONTENTS, FUNCTION DESCRIPTION OF EXTERIOR LIGHTING - GF82.10-P-0999MCU > MODEL 451.3/4

Exterior lights, function

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1165 · Applies to: 450, 451, 452, 454 · AR: GF82.10-P-0003MCU, PE82.10-P-2000MCU, PE82.10-P-2220MCU, GF82.10-P-3000MCU, GF82.10-P-2009MCU (+5 more)

GF82.10-P-0003MCU

Exterior lights, location of components

GF82.10-P-0003- 02MCU

Block diagram of exterior lights

GF82.10-P-0003- 03MCU Exterior lights wiring diagram

PE82.10-P-2000MCU Wiring diagram of brake lights and turn signal/hazard warning lights

PE82.10-P-2220MCU

Standing light actuation, function

GF82.10-P-3000MCU

Headlamp control, function

GF82.10-P-2009MCU

Turn signal indicator actuation, function

GF82.10-P-3008MCU

Stop lamp actuation, function

GF82.10-P-3010MCU

Headlamp range adjustment (HRA) headlamp function

GF82.10-P-1001MCU

Ambient illumination actuation function For vehicles with code (V54) Rain/light sensor GF82.10-P-2013MCU

Overview of exterior lights system components

GF82.10-P-9998MCU BASIC KNOWLEDGE > HEADLAMP RANGE ADJUSTMENT (HRA) HEADLAMP FUNCTION - GF82.10-P-1001MCU > MODEL 451.3/4 Function requirements Circ. 15 ON Low beam ON Function The headlamp range adjustment is installed as an item of passive safety equipment to prevent oncoming traffic from being dazzled. The incline angle of the low beam can be adapted to the different load conditions of the vehicle using the headlamp range adjustment. The incline angle is adapted using switch settings 0, 1 and 2 on the selector wheel of the combination switch (S4). Actuation takes place from the selector wheel straight to the left headlamp range adjustment motor (E1m1) in the left front lamp unit (E1) and the right headlamp range adjustment motor (E2m1) in the right front lamp unit (E2). Lamp unit, component description E1, E2 GF82.10-P-2017MCU Combination switch, component description S4 GF82.30-P-5000MCU BASIC KNOWLEDGE > HEADLAMP CONTROL, FUNCTION - GF82.10-P-2009MCU >

Location

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1169 · Applies to: 450, 451, 452, 454 · AR: GF82.10-P-3000MCU

The left front lamp unit and the right front lamp unit are located in the front of the vehicle. Design The following components are installed in the left front lamp unit: Left high beam Left low beam Left turn signal light Left standing light Left headlamp range adjustment motor (E1m1) The following components are installed in the right front lamp unit: Right high beam Right low beam Right turn signal light Right standing light Right headlamp range adjustment motor (E2m1) BASIC KNOWLEDGE > STANDING LIGHT ACTUATION, FUNCTION - GF82.10-P-3000MCU

Fig 1: Identifying Lamp Unit Components Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

The "unlock central locking system" request from the transmitter key is read in by the SAM control unit. This

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1177 · Applies to: 450, 451, 452, 454 · AR: PE82.20-P-2000MCC, PE82.20-P-2000MCD, PE82.20-P-2000MCU, GF82.20-P-5221MCC, GF54.21-P-4157MCC (+2 more)

then actuates the interior lamp. Automatically switched on when a door is opened The opening of the driver or front passenger side door is detected by the relevant rotary tumbler switch. The SAM control unit reads in the rotary tumbler switch signals and then actuates the interior lamp. Automatically switched on when the rear-end door is opened The opening of the rear-end door is detected by the rear-end door handle switch (with model 451.4) or the trunk lid rotary tumbler microswitch (with model 451.3). The SAM control unit reads in the signals and then actuates the interior lamp. Automatically switched off after a door has been opened immediately if circuit 15 on after 15 s when the door is closed and circuit 15 is off after 10 min if the door is open Automatically switched off after locking/unlocking using the transmitter key if circuit 15 is on 12 s after locking 30 s after unlocking if the doors remain closed

Interior illumination (IBL), location of components

GF82.20-P-0002- 01MCC Wiring diagram interior illumination * not for USA PE82.20-P-2000MCC Model 451.3## /4## ## up to 013644

• not for USA PE82.20-P-2000MCD Model 451.3## /4## ## as of 013645

• for USA only PE82.20-P-2000MCU

Interior lamp, component description E15/4 GF82.20-P-5221MCC

Component description for the SAM control unit N10/10

• not for USA GF54.21-P-4157MCC
• for USA only GF54.21-P-4157MCU BASIC KNOWLEDGE > CONTENTS, FUNCTION DESCRIPTION OF INTERIOR ILLUMINATION (IBL) - GF82.20-P-0998MCC > MODEL 451.3/4

Interior illumination (IBL) function

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1178 · Applies to: 450, 451, 452, 454 · AR: GF82.20-P-0002MCC, PE82.20-P-2000MCC, PE82.20-P-2000MCD, PE82.20-P-2000MCU, GF82.20-P-9997MCC

GF82.20-P-0002MCC

Interior illumination (IBL), location of components

GF82.20-P-0002- 01MCC Wiring diagram interior illumination * not for USA PE82.20-P-2000MCC Model 451.3## /4## ## up to 013644

• not for USA PE82.20-P-2000MCD Model 451.3## /4## ## as of 013645

• for USA only PE82.20-P-2000MCU

Overview of interior illumination (IBL) system components

GF82.20-P-9997MCC BASIC KNOWLEDGE > INTERIOR LAMP, COMPONENT DESCRIPTION - GF82.20-P- 5221MCC > MODEL 451.3/4 Location The interior lamp is in the headliner between the sun visors. Design The interior lamp consists of a lamp unit and the interior lamp switch. Switch positions The interior lamp switch has 3 possible switch positions: Switch pushed forwards interior lights permanently on, irrespective of whether a door was opened Switch in center position Fig 1: Identifying Front Interior Lamp & Switch Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

interior lights permanently off

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1179 · Applies to: 450, 451, 452, 454 · AR: GF82.20-P-9997MCC, GF82.20-P-5221MCC, GF54.21-P-4157MCC, GF54.21-P-4157MCU, GF82.20-P-0998MCC (+1 more)

Switch pushed backwards automatic interior light control active BASIC KNOWLEDGE > OVERVIEW OF INTERIOR ILLUMINATION (IBL) SYSTEM COMPONENTS - GF82.20-P-9997MCC > MODEL 451.3/4 Interior lamp, component description E15/4 GF82.20-P-5221MCC Component description for the SAM control unit N10/10

• not for USA GF54.21-P-4157MCC
• for USA only GF54.21-P-4157MCU Contents, function description of interior illumination (IBL)

GF82.20-P-0998MCC BASIC KNOWLEDGE > PANIC ALARM, LOCATION OF COMPONENTS - GF82.25-P-0012- 01MCU > BASIC KNOWLEDGE > PANIC ALARM FUNCTION - GF82.25-P-0012MCU > MODEL 451.3/4 Fig 1: Locating Panic Alarm Components Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

BASIC KNOWLEDGE > WIPER SYSTEM (WSA), FUNCTION - GF82.30-P-0003MCU >

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1183 · Applies to: 450, 451, 452, 454 · AR: GF82.30-P-0003MCU, GF82.30-P-2300MCU, GF82.30-P-2200MCU, PE82.30-P-2000MCU, GF82.30-P-0998MCU

MODEL 451.3/4 The wiper system (WSA) is operated centrally using the right wiper switch (S4/4). The position of the wiper switch is read in by the SAM control unit (N10/10). The SAM control unit actuates the following components directly: Wiper motor (M6/1) Rear-end door wiper motor (M6/4) (with model 451.3) The SAM control unit is notified of the park position of the wiper arms via a signal contact that is integrated in the wiper motors. The window washer fluid pump (M5/1) is actuated directly via the wiper switch. Functions Windshield Wiping at slow speed Wiping at fast speed Wiping with washer fluid Intermittent wipe Rear window (with model 451.3) Intermittent wipe Wiping with washer fluid Automatic wiping when reverse gear engaged

Wiper system (WSA), location of components

GF82.30-P-0003- 01MCU

Wiper system (WSA) block diagram

GF82.30-P-0003- 04MCC

Windshield wiper (WS) system, function

GF82.30-P-2300MCU

Rear window wiper system, function On model 451.3 GF82.30-P-2200MCU Wiring diagram of windscreen wiper

PE82.30-P-2000MCU BASIC KNOWLEDGE > CONTENTS, FUNCTION DESCRIPTION OF WIPER SYSTEM (WSA) - GF82.30-P-0998MCU > MODEL 451.3/4

Wiper system (WSA), function

GF82.30-P-0003MCU

Wiper system (WSA), location of components

GF82.30-P-0003- 01MCU

Wiper system (WSA) block diagram

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1184 · Applies to: 450, 451, 452, 454 · AR: GF82.30-P-2300MCU, GF82.30-P-2200MCU, PE82.30-P-2000MCU, GF82.30-P-9997MCU

GF82.30-P-0003- 04MCC

Windshield wiper (WS) system, function

GF82.30-P-2300MCU

Rear window wiper system, function On model 451.3 GF82.30-P-2200MCU Wiring diagram of windscreen wiper

PE82.30-P-2000MCU

Overview of system components, wiper system (WSA)

GF82.30-P-9997MCU BASIC KNOWLEDGE > WINDSHIELD WIPER (WS) SYSTEM, FUNCTION - GF82.30-P- 2300MCU > MODEL 451.3/4 Function requirements: Circuit 15 On Functions Wiping Wiping with washer fluid Fig 1: Windshield Wiper System Function Chart Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

releasing the wiper switch, another 3 wipe cycles are performed.

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1189 · Applies to: 450, 451, 452, 454 · AR: GF82.30-P-9997MCU

Intermittent wipe If the wiper switch is pressed downward beyond the catch point, the intermittent wipe is activated. The intermittent wipe is executed to match the vehicle speed or to match the amount of moisture on the windshield (with code (V54) Rain/light sensor). Operation of individual functions (rear window) (on model 451.3) Intermittent wipe If the wiper switch is pressed forward beyond the catch point, the intermittent wipe is activated for the rear window. Wipe with washer fluid Pressing the wiper switch forwards and holding it there directly actuates the windshield washer fluid pump. BASIC KNOWLEDGE > WIPER MOTOR - COMPONENT DESCRIPTION - GF82.30-P- 5010MCC > MODEL 451.3/4 Location The wiper motor is located directly in front of the splash wall. Task Windshield wiper drive Park position feedback via integrated signal contact The wiper motor is actuated and the signal contact evaluated by the SAM control unit (N10/10). BASIC KNOWLEDGE > OVERVIEW OF SYSTEM COMPONENTS, WIPER SYSTEM (WSA) - GF82.30-P-9997MCU > MODEL 451.3/4 Fig 1: View Of Wiper Motor Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Washer fluid supply to the spray nozzles. It is actuated directly by the right wiper switch (S4/4).

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1191 · Applies to: 450, 451, 452, 454 · AR: PE82.00-P-1100MCU, PE82.10-P-2000MCU, PE82.10-P-2220MCU, PE82.20-P-2000MCU, PE82.20-P-2000MCV (+5 more)

On model 451.3 the windshield washer fluid pump is designed as a duo pump. Depending on actuation, the pump's direction of rotation changes and therefore the conveying direction between the front and rear end. WIRING DIAGRAMS > OVERVIEW OF WIRING DIAGRAMS FOR ELECTRICAL SYSTEM, BODY - PE82.00-P-1100MCU > MODEL 451 Exterior lights wiring diagram MODEL 451 PE82.10-P-2000MCU Wiring diagram of brake lights and turn signal/hazard warning flasher MODEL 451 PE82.10-P-2220MCU Wiring diagram interior illumination MODEL 451 without code (876) Interior lights package PE82.20-P-2000MCU Wiring diagram interior illumination MODEL 451 with code (876) Interior lights package PE82.20-P-2000MCV Wiring diagram of windscreen wiper MODEL 451 PE82.30-P-2000MCU Wiring diagram radio MODEL 451 to 30.8.10 PE82.60-P-2000MCU Wiring diagram radio MODEL 451 as of 31.8.10 Radio entry PE82.60-P-2000MCE Wiring diagram radio MODEL 451 as of 31.8.10 Premium radio with Sound Premium PE82.60-P-2000MCF Wiring diagram radio MODEL 451 as of 31.8.10 Premium radio with Sound Basis PE82.60-P-2000MCG Hands-free system control unit wiring diagram MODEL 451 to 30.8.10 PE82.70-P-2103MCU Wiring diagram of communications interface (KOM) MODEL 451 to 30.8.10 PE82.85-P-2002MCU WIRING DIAGRAMS > EXTERIOR LIGHTS WIRING DIAGRAM - PE82.10-P-2000MCU > MODEL 451 Exterior lights wiring diagram PE82.10-P-2000-99MCU Legend for wiring diagram of exterior lights PE82.10-P-2000-60MCU Use of wiring diagrams OV00.01-P-1901-03MCC Search aid for all wiring diagram groups OV00.01-P-1901MCU Abbreviations for wiring diagrams OV00.01-P-1001-27MC Abbreviations of signal and circuit designations for wiring diagrams OV00.01-P-1001-28MC Location and assignment of line and connectors GF00.19-P-1000MCU

WIRING DIAGRAMS > WIRING DIAGRAM OF BRAKE LIGHTS AND TURN SIGNAL/HAZARD

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1196 · Applies to: 450, 451, 452, 454 · AR: PE82.10-P-2220MCU, OV00.01-P-1901MCU, GF00.19-P-1000MCU, GF00.19-P-2000MCU

WARNING FLASHER - PE82.10-P-2220MCU > MODEL 451 Wiring diagram turn signal/hazard warning lamps PE82.10-P-2220-97MCU Use of wiring diagrams OV00.01-P-1901-03MCC Search aid for all wiring diagram groups OV00.01-P-1901MCU Abbreviations for wiring diagrams OV00.01-P-1001-27MC Abbreviations of signal and circuit designations for wiring diagrams OV00.01-P-1001-28MC Location and assignment of line and connectors GF00.19-P-1000MCU Location and assignment of ground points GF00.19-P-2000MCU Fig 3: Brake Lights And Turn Signal/Hazard Warning Flasher - Wiring Diagram (3 Of 3) Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

WIRING DIAGRAMS > WIRING DIAGRAM INTERIOR ILLUMINATION - PE82.20-P-2000MCU

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1201 · Applies to: 450, 451, 452, 454 · AR: PE82.20-P-2000MCU

MODEL 451 except CODE (876) Interior lights package Wiring diagram interior illumination PE82.20-P-2000-97MCU Use of wiring diagrams OV00.01-P-1901-03MCC Fig 2: Interior Illumination - Wiring Diagram (2 Of 2) Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

WIRING DIAGRAMS > WIRING DIAGRAM RADIO - PE82.60-P-2000MCE >

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1221 · Applies to: 450, 451, 452, 454 · AR: PE82.60-P-2000MCE

MODEL 451 as of 31.8.10 Entry radio Wiring diagram radio

PE82.60-P-2000- 97MCE Use of wiring diagrams

OV00.01-P-1901- Fig 3: Radio - Wiring Diagram (3 Of 3) Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

WIRING DIAGRAMS > HANDS-FREE SYSTEM CONTROL UNIT WIRING DIAGRAM -

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1227 · Applies to: 450, 451, 452, 454 · AR: PE82.70-P-2103MCU, OV00.01-P-1901MCU, GF00.19-P-1000MCU

PE82.70-P-2103MCU > MODEL 451 up to 30.8.10 Hands-free system control unit wiring diagram PE82.70-P-2103-97MCU Use of wiring diagrams OV00.01-P-1901-03MCC Search aid for all wiring diagram groups OV00.01-P-1901MCU Abbreviations for wiring diagrams OV00.01-P-1001-27MC Abbreviations of signal and circuit designations for wiring diagrams OV00.01-P-1001-28MC Location and assignment of line and plug connectors GF00.19-P-1000MCU Fig 2: Hands-Free System Control Unit Wiring Diagram (2 Of 2) Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

WIRING DIAGRAMS > WIRING DIAGRAM OF COMMUNICATIONS INTERFACE (KOM) -

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1230 · Applies to: 450, 451, 452, 454 · AR: PE82.85-P-2002MCU, OV00.01-P-1901MCU, GF00.19-P-1000MCU, GF00.19-P-2000MCU, GF00.19-P-3000MCU

PE82.85-P-2002MCU > MODEL 451 up to 30.8.10 Wiring diagram of communications interface (KOM) PE82.85-P-2002-97MCU Use of wiring diagrams OV00.01-P-1901-03MCC Search aid for all wiring diagram groups OV00.01-P-1901MCU Abbreviations for wiring diagrams OV00.01-P-1001-27MC Abbreviations of signal and circuit designations for wiring diagrams OV00.01-P-1001-28MC Location and assignment of line and plug connectors GF00.19-P-1000MCU Location and assignment of ground points GF00.19-P-2000MCU Location and assignment of Z connector sleeves (line connectors in GF00.19-P-3000MCU Fig 2: Communications Interface (KOM) - Wiring Diagram (2 Of 2) Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

wiring harness)

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1231 · Applies to: 450, 451, 452, 454 · AR: PE82.00-P-1100MCU

Further wiring diagrams PE82.00-P-1100MCU SPECIAL TOOLS > 001 589 38 33 00 PULLER - WS82.00-N-3001B > FG 82/Set B MODEL all Use: Puller for wiper arms

SPECIAL TOOLS > 450 589 25 63 00 PULLER - WS82.00-P-0104B > FG 82/Set B MODEL 450, 451, 452, 454 Use: Puller for routing wiring harnesses. NOTE: smart no.: 7028 V000Q001 0000 00. Fig 1: Identifying Puller (001 589 38 33 00) Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

MAINTENANCE > CHECK AND CORRECT THE ADJUSTMENT OF THE HEADLAMPS -

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1297 · Applies to: 450, 451, 452, 454 · AR: AP82.10-P-8260MCU

AP82.10-P-8260MCU > Shown on vehicle with code (V07) Front fog lamps (FFO) Fig 1: Identifying Kink Line And Central Mark On Horizontal Division Mark Courtesy of MERCEDES-BENZ OF NORTH AMERICA. Fig 1: Identifying Left/Right Main And Low Beams, Front Fog Lamps And Adjustment Screws Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Switch on left high

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1299 · Applies to: 450, 451, 452, 454 · AR: AR82.10-P-4730MCU

6 Switch on left high beam (E1e1) and right high beam (E2e1)

7 Check adjustment of the left high beam (E1e1) and right high beam (E2e1), if necessary adjust the left high beam (E1e1) or right high beam (E2e1) at the adjustment screw (horizontal) (2)

AP82.10-P-8260- 02MCC 8 Remove rivet (3) or expanding rivet (4) which is located above the adjustment screw (vertical) (1) If the left high beam (E1e1) or right high beam (E2e1) has to be adjusted in the vertical direction. The expanding rivet (4) can be removed when the left front lamp unit (E1) or right front lamp unit (E2) is installed.To drill out the rivet (3) the left front lamp unit (E1) or right front lamp unit (E2) must be removed. See: ↓

Remove/install lamp unit AR82.10-P-4730MCU 9 Install left front lamp unit (E1) and right front lamp unit (E2) If the rivet (3) above the adjustment screw (vertical) (1) has been removed. AR82.10-P-4730MCU 10 Adjust the left high beam (E1e1) or right high beam (E2e1) at the adjustment screw (vertical) (1) If the left high beam (E1e1) or right high beam (E2e1) has to be adjusted in the vertical direction. AP82.10-P-8260- 02MCC 11 Switch on left low beam (E1e2) and right low beam (E2e2)

12 Check adjustment of the left low beam (E1e2) and the right low beam (E2e2) if necessary adjust the left low beam (E1e2) or right low beam (E2e2) at the adjustment

AP82.10-P-8260- 05MCC

screw (horizontal) (2)

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1300 · Applies to: 450, 451, 452, 454 · AR: AR82.10-P-4730MCU

13 Remove rivet (3) or expanding rivet (4) which is located above the adjustment screw (vertical) (1) If the left low beams (E1e2) or right low beam (E2e2) has to be adjusted in the vertical direction and the rivet (3) or expanding rivet (4) is still fitted. The expanding rivet (4) can be removed when the left front lamp unit (E1) or right front lamp unit (E2) is installed.To drill out the rivet (3) the left front lamp unit (E1) or right front lamp unit (E2) must be removed. See: ↓

Remove/install lamp unit AR82.10-P-4730MCU 14 Install left front lamp unit (E1) and right front lamp unit (E2) If the rivet (3) above the adjustment screw (vertical) (1) has been removed. AR82.10-P-4730MCU 15 Adjust left low beam (E1e2) or right low beam (E2e2) at the adjustment screw (vertical) (1) If the left low beam (E1e2) or right low beam (E2e2) has to be adjusted in the vertical direction. AP82.10-P-8260- 05MCC 16 Switch on left front fog lamp (E5/1) and right front fog lamp (E5/2) On vehicles with code (V07) Front fog lamps (FFO)

17 Check adjustment for left fog lamp (E5/1) and right fog lamp (E5/2), correct if necessary On vehicles with code (V07) Front fog lamps (FFO) AP82.10-P-8260- 04MCC Install

18 Clip the expanding rivet (4) above the adjustment screw (vertical) (1) into the left front lamp unit (E1) or right front lamp unit (E2) If the rivet (3) or expanding rivet (4) above the adjustment screw (vertical) (1) has been removed.

PARTS ORDERING NOTES Part no. Designation Quantity

DG 88 (see EPC)

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1301 · Applies to: 450, 451, 452, 454 · AR: AP82.35-P-8210MCC, AP82.35-P-8252MCC

Expanding rivet 2 MAINTENANCE > WINDSHIELD WASHER SYSTEM - INSPECT FLUID LEVEL, ADJUST TO CORRECT LEVEL - AP82.35-P-8210MCC > MODEL 451.3/4 Checking

1 Remove maintenance flap

2 Check and if necessary correct the fluid level in the reservoir of the windshield washer system (1) Refer to table on package for mixing ratio.

Windshield washer fluid concentrate Sheet 371.0 BB00.40- P-0371- 00A MAINTENANCE > WINDSHIELD WIPERS, WINDSHIELD WASHER SYSTEM - OPERATIONAL INSPECTION - AP82.35-P-8252MCC > MODEL 451.3/4 Fig 1: Identifying Windshield Washer System Reservoir Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

BODY INDEX - AR82.00-Z-9451CA >

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1304 · Applies to: 450, 451, 452, 454 · AR: AR82.00-Z-9451CA, AR82.10-P-4735MCC, AR82.35-P-6975MCC, AR82.30-P-6100MCC, AR82.25-P-4726MCC (+5 more)

MODEL 451 Adjust headlamps MODEL 451.3 /4 AR82.10-P-4735MCC Adjust spray nozzles of windshield washer system MODEL 451.3 /4 AR82.35-P-6975MCC Remove and install wiper arm MODEL 451.3 /4 AR82.30-P-6100MCC Remove/install additional turn signal lamp MODEL 451.3 /4 AR82.25-P-4726MCC Remove/install antenna MODEL 451... AR82.70-P-8951MCC Remove/install antenna cable MODEL 451... AR82.62-P-1200MCC Remove/install AUX jack MODEL 451.3 /4 up to 30.8.10 with CODE (41Z) AUX jack AR82.60-P-1026MCC Remove/install bass module speaker MODEL 451... AR82.62-P-7839MCC Remove/install center high- mounted stop lamp MODEL 451.3 /4 AR82.10-P-5375MCC Remove/install fog lamp MODEL 451.3 /4 with CODE (V07) Front fog lamps (FFO) AR82.10-P-5103MCC Remove/install fog lamp MODEL 451.3 /4 with CODE (V07) Front fog lamps (FFO) AR82.10-P-5103MCU Remove/install front dome lamp MODEL 451.3 /4 AR82.20-P-0110MCC Remove/install front dome lamp MODEL 451.3 /4 AR82.20-P-0110MCU Remove/install front door speakers in mirror triangle MODEL 451.3 /4 with CODE (C17) smart surround sound system AR82.62-P-7850MCC Remove/install global positioning system (GPS) antenna MODEL 451.3 /4 as of 31.8.10 with CODE (527) High-Line radio AR82.85-P-0002MCC Remove/install lamp unit MODEL 451.3 /4 AR82.10-P-4730MCC Remove/install lamp unit MODEL 451.3 /4 AR82.10-P-4730MCU Remove/install license plate lamps MODEL 451.3 /4 AR82.10-P-5161MCC Remove/install loudspeakers in front doors MODEL 451... AR82.62-P-7845MCC Remove/install media interface MODEL 451... AR82.60-P-1031MCC Remove/install radio MODEL 451... AR82.60-P-7502MCC Remove/install radio MODEL 451... AR82.60-P-7502MCU Remove/install rain/light sensor MODEL 451.3 /4 with CODE AR82.30-P-7800MCC

(V54) Rain/light sensor

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1305 · Applies to: 450, 451, 452, 454 · AR: AR82.30-P-6900MCC, AR82.62-P-7837MCC, AR82.35-P-7338MCC, AR82.30-P-6910MCC, AR82.10-P-4905MCC (+5 more)

Remove/install rear window wiper motor MODEL 451.3 AR82.30-P-6900MCC Remove/install speaker in the side paneling (rear) MODEL 451.3 /4 with CODE (C17) smart surround sound system AR82.62-P-7837MCC Remove/install spray-nozzle for rear window MODEL 451.3 AR82.35-P-7338MCC Remove/install tailgate wiper arm MODEL 451.3 AR82.30-P-6910MCC Remove/install taillamp MODEL 451.3 /4 AR82.10-P-4905MCC Remove/install tweeter MODEL 451... AR82.62-P-1000MCC Remove/install washer fluid reservoir of windshield washer system MODEL 451.3 /4 AR82.35-P-6000MCC Remove/install washer fluid reservoir of windshield washer system MODEL 451.3 /4 AR82.35-P-6000MCU Remove/install windshield washer nozzle MODEL 451.3 /4 AR82.35-P-6970MCC Remove/install windshield washer system pump MODEL 451.3 /4 AR82.35-P-6002MCC Remove/install windshield washer system pump MODEL 451.3 /4 AR82.35-P-6002MCU Remove/install wiper motor MODEL 451.3 /4 AR82.30-P-6800MCC Remove/install wiper motor MODEL 451.3 /4 AR82.30-P-6800MCU Remove/install wiper system MODEL 451.3 /4 AR82.30-P-6400MCC Remove/install wiper system MODEL 451.3 /4 AR82.30-P-6400MCU Replace wiper blade MODEL 451.3 /4 AR82.30-P-6251MCC TESTING & REPAIR > REMOVE/INSTALL LAMP UNIT - AR82.10-P-4730MCU > MODEL 451.3/4

TESTING & REPAIR > REMOVE/INSTALL LICENCE PLATE LAMPS - AR82.10-P-5161MCC

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1309 · Applies to: 450, 451, 452, 454 · AR: AR82.10-P-5161MCC, AR82.10-P-5375MCC

MODEL 451.3/4

Remove/install 1 Release catch (arrow) and lead left license plate lamp (E19/1) or right license plate lamp (E19/2) downward out of rear-end door until the electrical connectors (1) are accessible 2 Disconnect electrical connectors (1) and remove left license plate lamp (E19/1) or right license plate lamp (E19/2) 3 Install in the reverse order 4 Perform function test on left license plate lamp (E19/1) or right license plate lamp (E19/2) TESTING & REPAIR > REMOVE/INSTALL CENTER HIGH-MOUNTED STOP LAMP - AR82.10-P-5375MCC > MODEL 451.3/4 Fig 1: Identifying Left/Right License Plate Lamps And Electrical Connectors Courtesy of MERCEDES-BENZ OF NORTH AMERICA. Fig 1: Identifying Center High-Mounted Stop Lamp, Screw And Electrical Connector Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Remove/install

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1310 · Applies to: 450, 451, 452, 454 · AR: AR82.20-P-0110MCU

1 Remove bolts (1) of center high-mounted brake lamp (E21) 2 Remove center high-mounted brake lamp (E21) until the electrical connector (2) is accessible 3 Disconnect electrical connector from center high-mounted brake lamp (E21) and remove center high-mounted brake lamp (E21) 4 Install in the reverse order 5 Perform function test of center high-mounted brake lamp (E21) TESTING & REPAIR > REMOVE/INSTALL FRONT DOME LAMP - AR82.20-P-0110MCU > MODEL 451.3/4

Remove/install

1 Unclip catch (2) of front interior lamp (E15/4) using a suitable tool Do not damage roof frame panel (1) by scratching it as it must otherwise be replaced. 2 Lead out front interior lamp (E15/4) from roof frame panel (1) until the electrical connector (3) is accessible

3 Disconnect electrical connector (3) and take off front interior lamp (E15/4)

4 Install in the reverse order

5 Perform function test on front interior lamp (E15/4)

TESTING & REPAIR > REMOVE/INSTALL ADDITIONAL TURN SIGNAL LAMP - AR82.25-P- 4726MCC > MODEL 451.3 /4 Fig 1: Identifying Roof Frame Paneling, Electrical Connector, Front Interior Lamp And Catch Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Remove/install

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1311 · Applies to: 450, 451, 452, 454 · AR: AR82.30-P-6100MCC

1 Release catch (3) using snap-release tool and remove left additional turn signal lamp (E22/1) or right additional turn signal lamp (22/2) from CBS front (1) until holder (2) is accessible *452589016300 2 Rotate holder (2) counterclockwise by 90° and take out of left additional turn signal lamp (E22/1) or right additional turn signal lamp (E22/2) Installation: Ensure that the holder (2) is snapped into the left additional turn signal lamp (E22/1) or right additional turn signal lamp (E22/2).

3 Install in the reverse order

4 Perform function test on left additional turn signal lamp (E22/1) or right additional turn signal lamp (E22/2)

TESTING & REPAIR > REMOVE AND INSTALL WIPER ARM - AR82.30-P-6100MCC > MODEL 451.3 /4 Fig 1: Identifying Left/Right Additional Turn Signal Lamp, CBS Front, Holder And Catch Courtesy of MERCEDES-BENZ OF NORTH AMERICA. Fig 2: Identifying Snap-Release Tool (452 589 01 63 00) Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

wiper shaft

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1313 · Applies to: 450, 451, 452, 454 · AR: AR82.30-P-6251MCC, AR82.30-P-6400MCU

01F wiper shaft TESTING & REPAIR > REPLACE WIPER BLADE - AR82.30-P-6251MCC > MODEL 451.3 /4 Shown on front wiper blades (2) on model 451.3

Remove/install

Risk of injury caused by moving parts that can pinch, crush or, in extreme cases even sever extremities. Always remove ignition key when working on windshield wiper mechanism. AS82.30- Z-0001- 01A 1 Fold up wiper arm (1), unclip catch (arrow A) from wiper blade (2), move wiper blade (2) in direction of arrow, unhook from guide (arrow B) and remove Do not allow wiper arm (1) to fold back, otherwise the window may be damaged. 2 Install in the reverse order

TESTING & REPAIR > REMOVE/INSTALL WIPER SYSTEM - AR82.30-P-6400MCU > MODEL 451.3 /4 Fig 2: Identifying Puller (001 589 38 33 00) Courtesy of MERCEDES-BENZ OF NORTH AMERICA. Fig 1: Identifying Wiper Arm And Blade Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Remove/install

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1314 · Applies to: 450, 451, 452, 454 · AR: AR82.30-P-6800MCU

1 Remove front module

AR62.30-P- 1575MCU 2 Disconnect electrical connector (2) from wiper motor (M6/1)

3 Remove bracket (3) with rubber grommet from wiper motor (M6/1)

4 Remove bolts (1) starting from the right and take off wiper system (4) Installation: Tighten bolts (1) starting from the left.

*BA82.30-P- 1007-01F 5 Install in the reverse order

6 Perform function test of wiper system (4) with wiper motor (M6/1)

WINDSHIELD WIPER Number Designation Model 451.3 Model 451.4 BA82.30-P-1007- 01F Bolt, wiper linkage to body Nm 10 10 TESTING & REPAIR > REMOVE/INSTALL WIPER MOTOR - AR82.30-P-6800MCU > Fig 1: Identifying Wiper System, Motor, Bracket, Electrical Connector And Screw Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

6900MCC >

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1316 · Applies to: 450, 451, 452, 454 · AR: AR82.30-P-6910MCC

MODEL 451.3 Remove/install

1 Remove wiper arm of rear-end door

AR82.30- P- 6910MCC 2 Open upper rear-end door and remove bolts (2)

3 Unhook upper rear-end door paneling (1) and remove

4 Detach hose (5) from tailgate wiper motor (M6/4)

5 Detach electrical connector (4) on rear- end door wiper motor (M6/4)

6 Remove bolts (3) from tailgate wiper motor (M6/4) and remove tailgate wiper motor (M6/4) The rear window spray nozzle (6) is integrated in the tailgate wiper motor (M6/4).

7 Install in the reverse order

8 Perform function test on tailgate wiper motor (M6/4)

9 Adjust rear window spray nozzle (6)

AR82.35- P- 6975MCC TESTING & REPAIR > REMOVE/INSTALL TAILGATE WIPER ARM - AR82.30-P-6910MCC > MODEL 451.3 Fig 1: Identifying Rear Window Wiper Motor Components Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

TESTING & REPAIR > REMOVE/INSTALL RAIN/LIGHT SENSOR - AR82.30-P-7800MCC >

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1318 · Applies to: 450, 451, 452, 454 · AR: AR82.30-P-7800MCC

MODEL 451.3 /4 with CODE (V54) Rain/light sensor Remove

1 Remove inside rearview mirror * for USA only AR68.40- P- 0001MCU except USA AR68.40- P- 0001MCC 2 Unclip cover (1) from the retaining collar (3) and detach cable Carefully unclip cover (1) to prevent the retaining clips from breaking.

Fig 2: Identifying Puller (001 589 38 33 00) Courtesy of MERCEDES-BENZ OF NORTH AMERICA. Fig 1: Identifying Rain/Light Sensor, Cover, Cable Duct, Retaining Ring And Clamp Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

except USA

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1320 · Applies to: 450, 451, 452, 454 · AR: AR82.35-P-6000MCU

P- 0001MCC 14 Carry out function check

TESTING & REPAIR > REMOVE/INSTALL WASHER FLUID RESERVOIR OF WINDSHIELD WASHER SYSTEM - AR82.35-P-6000MCU > MODEL 451.3 /4 Shown on model 451.3

Remove/install

1 Remove front module

AR62.30- P- 1575MCU 2 Suction off window washer fluid in washer fluid reservoir (1)

3 Unscrew nuts (2) from washer fluid reservoir (1) Installation: Replace self- locking nuts (2).

4 Remove washer fluid reservoir (1) until windshield washer fluid pump (M5/1) is accessible

5 Unclip windshield washer fluid pump (M5/1) from washer fluid reservoir (1) and place to one side with connected hoses and the electrical line Installation: Ensure that seal of windshield washer fluid pump (M5/1) is correctly seated on washer fluid reservoir (1).

6 Take off washer fluid reservoir (1)

7 Install in the reverse order

8 Fill washer fluid reservoir (1)

Windshield washer system - inspect AP82.35- Fig 1: Identifying Windshield Washer Fluid Pump, Washing Water Reservoir And Nut Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

fluid level, adjust to correct level

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1321 · Applies to: 450, 451, 452, 454 · AR: AR82.35-P-6002MCU

P- 8210MCC 9 Perform tightness check of washer fluid reservoir (1)

10 Perform function check of windshield washer system

TESTING & REPAIR > REMOVE/INSTALL WINDSHIELD WASHER SYSTEM PUMP - AR82.35-P-6002MCU > MODEL 451.3 /4 Shown on model 451.3

Remove/install

1 Remove front module

AR62.30- P- 1575MCU 2 Suction off window washer fluid in washer fluid reservoir (1)

3 Unscrew nuts (5) from washer fluid reservoir (1) Installation: Replace self-locking nuts (5).

4 Remove washer fluid reservoir (1) until windshield washer fluid pump (M5/1) is accessible

5 Detach electrical connector (2) from windshield washer fluid pump (M5/1)

6 Unclip windshield washer fluid pump (M5/1) from washer fluid reservoir (1) and place to one On model 451.4 only the hose (4) is installed. Installation: Ensure that seal of windshield washer fluid pump (M5/1) is

Fig 1: Identifying Windshield Washer Fluid Pump, Washing Water Reservoir And Hoses Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Install in the reverse order

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1323 · Applies to: 450, 451, 452, 454 · AR: AR82.35-P-6975MCC

3 Install in the reverse order

TESTING & REPAIR > ADJUST SPRAY NOZZLES OF WINDSHIELD WASHER SYSTEM - AR82.35-P-6975MCC > MODEL 451.3 /4 Fig 1: Identifying Wiper Motor And Electrical Connector Courtesy of MERCEDES-BENZ OF NORTH AMERICA. Fig 2: Identifying Windshield Washer Nozzle For Windshield And Front Wiper Arm Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

TESTING & REPAIR > REMOVE/INSTALL SPRAY-NOZZLE FOR REAR WINDOW - AR82.35-

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1325 · Applies to: 450, 451, 452, 454 · AR: AR82.60-P-7502MCU

P-7338MCC > MODEL 451.3 Remove/install

1 Remove wiper arm of rear-end door

AR82.30- P- 6910MCC 2 Open upper rear-end door and remove bolts (2)

3 Unhook upper rear-end door paneling (1) and remove

4 Detach hose (5) from tailgate wiper motor (M6/4)

5 Detach electrical connector (4) on rear- end door wiper motor (M6/4)

6 Remove bolts (3) from tailgate wiper motor (M6/4) and remove tailgate wiper motor (M6/4) The rear window spray nozzle (6) is integrated in the tailgate wiper motor (M6/4).

7 Install in the reverse order

8 Perform function test on tailgate wiper motor (M6/4)

9 Adjust rear window spray nozzle (6)

AR82.35- P- 6975MCC TESTING & REPAIR > REMOVE/INSTALL RADIO - AR82.60-P-7502MCU > MODEL 451.3 /4 with CODE (C50) smart radio 10 with CODE (C57) smart radio 9 with CODE (516) Fig 1: Identifying Spray-Nozzle For Rear Window Components Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

accessible

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1327 · Applies to: 450, 451, 452, 454 · AR: AR82.62-P-1000MCC

5 Detach electrical connectors (3) and antenna plug (4) from smart radio 9 (A2/1) The actual number of connectors (3) will depend on the amount of equipment installed.

6 Remove smart radio 9 (A2/1)

7 Install in the reverse order

8 Read out fault memory, erase if necessary

AD00.00-P-2000- 04MCC 9 Perform function test of smart radio 9 (A2/1)

TESTING & REPAIR > REMOVE/INSTALL TWEETER - AR82.62-P-1000MCC > MODEL 451.3 /4 up to 30.8.10 with CODE (C17) Sound package (2 tweeters, 2 bass reflex boxes and diplexer) (FFO) MODEL 451.3 /4 with CODE (C54) Sound system 2

Remove/install

1 Adjust left or right seat towards back

2 Unclip left tweeter (H4/33) or right tweeter (H4/34) from underneath out of bracket (2) on upper dashboard section Installation: The left tweeter (H4/33) or right tweeter (H4/34) must latch audibly into Fig 1: Identifying Left/Right Tweeter, Dashboard Top Section And Bracket Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

(1) and lead downwards until the

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1328 · Applies to: 450, 451, 452, 454 · AR: AR82.62-P-1200MCC

electrical connector is accessible the bracket (2). 3 Disconnect electrical connector from left tweeter (H4/33) or right tweeter (H4/34) and remove left tweeter (H4/33) or right tweeter (H4/34)

4 Install in the reverse order

TESTING & REPAIR > REMOVE/INSTALL ANTENNA CABLE - AR82.62-P-1200MCC > MODEL 451.3 /4 with CODE (C08) Radio preinstallation incl. rod antenna (FFO) with CODE (460) Canada version with CODE (494) USA version with CODE (498) Japan version Shown on vehicle with code (494) USA version Shown on vehicle with code (494) USA version Fig 1: Identifying Antenna Cable Components - Shown On Vehicle With Code (494) USA Version Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

using suitable insulation

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1331 · Applies to: 450, 451, 452, 454 · AR: AR82.62-P-7837MCC

tape 17 Fix antenna cable (1) in place at main wiring harness using suitable insulation tape.

18 Route antenna cable (1) along main wiring harness toward radio recess and fasten using cable tie (11)

19 Fix antenna cable (1) in place at main wiring harness in radio recess using suitable insulation tape

20 Seal grommet (8) using suitable sealant

21 Install left front lamp unit * not for USA AR82.10-P- 4730MCC * for USA only AR82.10-P- 4730MCU 22 Install radio With code (C50) Smart Radio 10 orCode (C57) smart radio 9 orCode (516) RADIO WITH USB INTERFACE or code (527) High-Line radio

• not for USA AR82.60-P- 7502MCC
• for USA only AR82.60-P- 7502MCU TESTING & REPAIR > REMOVE/INSTALL SPEAKER IN THE SIDE PANELING (REAR) - AR82.62-P-7837MCC > MODEL 451.3 /4 with CODE (C17) smart surround sound system Fig 3: Identifying Expanding Pliers (450 589 12 37 00) Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Shown on left side of vehicle

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1332 · Applies to: 450, 451, 452, 454 · AR: AR82.62-P-1200MCC

Remove/install

1 Remove left or right paneling (1) at side in trunk

AR68.30- P- 4800MCC 2 Place paneling (1) onto suitable base

3 Lift off spring clips (2) Installation: Replace spring clips (2).

4 Remove left rear speaker (H4/7) or right rear speaker (H4/8) Installation: Note installation position of left rear speaker (H4/7) or right rear speaker (H4/8).

5 Install in the reverse order

6 Perform function test of left rear speaker (H4/7) or right rear speaker (H4/8)

TESTING & REPAIR > REMOVE/INSTALL ANTENNA CABLE - AR82.62-P-1200MCC > MODEL 451.3 /4 with CODE (C08) Radio preinstallation incl. rod antenna (FFO) with CODE (460) Canada version with CODE (494) USA version with CODE (498) Japan version Shown on vehicle with code (494) USA version Fig 1: Identifying Left/Right Rear Loudspeaker, Cover And Spring Clip Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

tape

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1336 · Applies to: 450, 451, 452, 454 · AR: AR82.10-P-5161MCC

17 Fix antenna cable (1) in place at main wiring harness using suitable insulation tape.

18 Route antenna cable (1) along main wiring harness toward radio recess and fasten using cable tie (11)

19 Fix antenna cable (1) in place at main wiring harness in radio recess using suitable insulation tape

20 Seal grommet (8) using suitable sealant

21 Install left front lamp unit * not for USA AR82.10-P- 4730MCC * for USA only AR82.10-P- 4730MCU 22 Install radio With code (C50) Smart Radio 10 orCode (C57) smart radio 9 orCode (516) RADIO WITH USB INTERFACE or code (527) High-Line radio

• not for USA AR82.60-P- 7502MCC
• for USA only AR82.60-P- 7502MCU TESTING & REPAIR > REMOVE/INSTALL LICENSE PLATE LAMPS - AR82.10-P-5161MCC

  MODEL 451.3 /4 Fig 3: Identifying Expanding Pliers (450 589 12 37 00) Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Remove/install

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1337 · Applies to: 450, 451, 452, 454 · AR: AR82.62-P-7850MCC

1 Release catch (arrow) and lead left license plate lamp (E19/1) or right license plate lamp (E19/2) downward out of rear-end door until the electrical connectors (1) are accessible 2 Disconnect electrical connectors (1) and remove left license plate lamp (E19/1) or right license plate lamp (E19/2) 3 Install in the reverse order 4 Perform function test on left license plate lamp (E19/1) or right license plate lamp (E19/2) TESTING & REPAIR > REMOVE/INSTALL FRONT DOOR SPEAKERS IN MIRROR TRIANGLE - AR82.62-P-7850MCC > MODEL 451.3 /4 with CODE (C17) smart surround sound system Fig 1: Identifying Left/Right License Plate Lamp And Electrical Connectors Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Remove/install

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1338 · Applies to: 450, 451, 452, 454 · AR: AR82.70-P-8951MCC

1 Lower crank window 2 Unscrew bolt (2) from mirror triangle cover (1). 3 Release covering for mirror triangle (1) from holders (arrows) and move far enough until the left tweeter (H4/33) or right tweeter (H4/34) is accessible 4 Detach electrical connector (3) from left tweeter (H4/33) or right tweeter (H4/34) and remove covering from mirror triangle (1) 5 Unclip and remove left tweeter (H4/33) or right tweeter (H4/34) by turning in clockwise direction from covering for mirror triangle (1) 6 Install in the reverse order 7 Perform function test of left tweeter (H4/33) or right tweeter (H4/34) TESTING & REPAIR > REMOVE/INSTALL ANTENNA - AR82.70-P-8951MCC > MODEL 451.3 /4 with CODE (C08) Radio preinstallation incl. rod antenna (FFO) with CODE (C50) smart radio 10 with CODE (C57) smart radio 9 Fig 1: Identifying Left/Right Tweeters, Mirror Triangle Cover, Electrical Connector And Screw Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

TESTING & REPAIR > REMOVE/INSTALL GLOBAL POSITIONING SYSTEM (GPS)

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1340 · Applies to: 450, 451, 452, 454 · AR: AR82.85-P-0002MCC, AS82.00-Z-9999ZZ

ANTENNA - AR82.85-P-0002MCC > MODEL 451.3 /4 as of 31.8.10 with CODE (527) High-Line radio Remove/install

1 Remove smart Premium radio * not for USA AR82.60- P- 7502MCC * for USA only AR82.60- P- 7502MCU 2 Detach holder (1) of wiring harness for Global Positioning System (GPS) antenna (A2/23)

3 Unclip Global Positioning System (GPS) antenna (A2/23) from below and remove from upper section on the instrument panel Installation: The metal plate for the Global Positioning System (GPS) antenna (A2/23) must face downwards.

4 Install in the reverse order

SAFETY PRECAUTIONS > SAFETY INFORMATION: ELECTRICAL SYSTEM BODY - AS82.00-Z-9999ZZ > MODEL all Fig 1: Identifying Global Positioning System (GPS) Antenna And Bracket Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Remove

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1429 · Applies to: 450, 451, 452, 454 · AR: AR82.60-P-7502MCC, AR82.60-P-7502MCU, AR68.30-P-4050MCC, AR68.30-P-4050MCU, AR68.30-P-4450MCC (+2 more)

1 Remove smart radio 9 (A2/1), smart radio 10 (A2/2) or smart Entry radio * not for USA AR82.60-P-7502MCC * for USA only AR82.60-P-7502MCU 2 Remove paneling of right A- pillar * not for USA AR68.30-P-4050MCC * for USA only AR68.30-P-4050MCU Install

3 Retrofit iPhone-kit control unit

AZ82.70-P-0013- 02MCC 4 Retrofit iPhone kit wiring harness

AZ82.70-P-0013- 01MCC 5 Retrofit iPhone-kit microphone

AZ82.70-P-0013- 03MCC 6 Install lining on right A-pillar * not for USA AR68.30-P-4050MCC * for USA only AR68.30-P-4050MCU 7 Install front roof frame paneling Model 451.3

• not for USA AR68.30-P-4450MCC

• for USA only AR68.30-P-4450MCU Model 451.4

• not for USA AR68.30-P-4450MCO Fig 2: Identifying Center Console Cover, Cover, Screw And External Audio Source Separation Point Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Remove

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1435 · Applies to: 450, 451, 452, 454 · AR: AR82.60-P-7502MCC, AR82.60-P-7502MCU, AR82.85-P-0002MCC, AR68.20-P-2350MCF

1 Remove smart Entry radio * not for USA AR82.60-P-7502MCC * for USA only AR82.60-P-7502MCU Install

2 Install GPS antenna (A2/23)

AR82.85-P-0002MCC 3 Install smart Premium radio (A2/4) * not for USA AR82.60-P-7502MCC * for USA only AR82.60-P-7502MCU 4 Install new center console cover (2)

AR68.20-P-2350MCF 5 Connect Star Diagnosis

AD00.00-P-2000- 04MCC 6 Enter special equipment on the vehicle data card and the online vehicle data card Add code (527) High-Line radio.

7 Disconnect Star Diagnosis

AD00.00-P-2000- 04MCC 8 Enter security code of smart Premium radio (A2/4), change if necessary The security code is set to "0000" by default at the factory. If the security code is to be changed, it must be

Fig 1: Identifying Operating Instructions, Center Console Cover, Smart Premium Radio And GPS Antenna Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

BASIC KNOWLEDGE > EXTERIOR LIGHTS, FUNCTION - GF82.10-P-0003MCU >

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1439 · Applies to: 450, 451, 452, 454 · AR: GF82.10-P-0003MCU

MODEL 451.3 /4 The exterior lights comprise the following functions: Standing lights actuation Standing lights actuation Light warning Driving lights actuation Low beams High beam and headlamp flasher Daytime running lights (with code (K06) Daytime running lights) Fig 1: Exterior Lights Block Diagram Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Right front fog lamp (E5/2) (with code (V07) (Front fog lamps (FFO))

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1441 · Applies to: 450, 451, 452, 454 · AR: PE82.10-P-2000MCU, PE82.10-P-2220MCU, GF82.10-P-3000MCU, GF82.10-P-2009MCU, GF82.10-P-3008MCU (+4 more)

Front fog lamp actuation Function requirements Standing lights or driving lights on Circuit 15 On Function The request is made via the front fog lamps switch (S6/1s8) in the cockpit switch group and is read in by the SAM control unit, which actuates the front fog lamps. The feedback is provided by the LED integrated in the front fog lamps switch. Backup lamp actuation Function requirement Circuit 15 On Function The selector lever module control unit (N15/5) reads in the status of the integral backup light switch and actuates the left backup light (E3e3) and the right backup light (E4e3) when reverse gear is engaged.

Exterior lights, location of components

GF82.10-P-0003- 02MCU

Block diagram of exterior lights

GF82.10-P-0003- 03MCU Exterior lights wiring diagram

PE82.10-P-2000MCU Wiring diagram of brake lights and turn signal/hazard warning lights

PE82.10-P-2220MCU

Standing light actuation, function

GF82.10-P-3000MCU

Headlamp control, function

GF82.10-P-2009MCU

Turn signal indicator actuation, function

GF82.10-P-3008MCU

Stop lamp actuation, function

GF82.10-P-3010MCU

Headlamp range adjustment (HRA) headlamp function

GF82.10-P-1001MCU

Ambient illumination actuation function For vehicles with code (V54) Rain/light sensor GF82.10-P-2013MCU BASIC KNOWLEDGE > CONTENTS, FUNCTION DESCRIPTION OF EXTERIOR LIGHTING - GF82.10-P-0999MCU >

MODEL 451.3 /4

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1442 · Applies to: 450, 451, 452, 454 · AR: GF82.10-P-0003MCU, PE82.10-P-2000MCU, PE82.10-P-2220MCU, GF82.10-P-3000MCU, GF82.10-P-2009MCU (+5 more)

Exterior lights, function

GF82.10-P-0003MCU

Exterior lights, location of components

GF82.10-P-0003- 02MCU

Block diagram of exterior lights

GF82.10-P-0003- 03MCU Exterior lights wiring diagram

PE82.10-P-2000MCU Wiring diagram of brake lights and turn signal/hazard warning lights

PE82.10-P-2220MCU

Standing light actuation, function

GF82.10-P-3000MCU

Headlamp control, function

GF82.10-P-2009MCU

Turn signal indicator actuation, function

GF82.10-P-3008MCU

Stop lamp actuation, function

GF82.10-P-3010MCU

Headlamp range adjustment (HRA) headlamp function

GF82.10-P-1001MCU

Ambient illumination actuation function For vehicles with code (V54) Rain/light sensor GF82.10-P-2013MCU

Overview of exterior lights system components

GF82.10-P-9998MCU BASIC KNOWLEDGE > HEADLAMP RANGE ADJUSTMENT (HRA) HEADLAMP FUNCTION - GF82.10-P-1001MCU > MODEL 451.3 /4 Function requirements Circ. 15 ON Low beam ON Function The headlamp range adjustment is installed as an item of passive safety equipment to prevent oncoming traffic from being dazzled. The incline angle of the low beam can be adapted to the different load conditions of the vehicle using the headlamp range adjustment. The incline angle is adapted using switch settings 0, 1 and 2 on the selector wheel of the combination switch (S4). Actuation takes place from the selector wheel straight to the left headlamp range adjustment motor (E1m1) in the left front lamp unit (E1) and the right headlamp range adjustment motor (E2m1) in the right front lamp unit (E2). Lamp unit, component description E1, E2 GF82.10-P-2017MCU

Combination switch, component description

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1443 · Applies to: 450, 451, 452, 454 · AR: GF82.30-P-5000MCU, GF82.10-P-2009MCU

S4 GF82.30-P-5000MCU BASIC KNOWLEDGE > HEADLAMP CONTROL, FUNCTION - GF82.10-P-2009MCU > MODEL 451.3 /4 Functions Low beam High beam and headlamp flasher Daytime running lights (with code (K06) Daytime running lights) Auto on/off driving lights (with code (V54) Rain/light sensor) Dipped beam Function requirement Circuit 15 On Function The low beam is switched on by rotating the combination switch to switch position 2. The SAM control unit reads in the switch position of the combination switch and actuates the left and right low beam. The status message "low beams on" is transmitted by the SAM control unit via the CAN to the instrument cluster, which then actuates the low beams indicator lamp. Fig 1: Headlamp Control Function Chart Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

MODEL 451.3 /4

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1446 · Applies to: 450, 451, 452, 454 · AR: GF82.10-P-3000MCU

Location The left front lamp unit and the right front lamp unit are located in the front of the vehicle. Design The following components are installed in the left front lamp unit: Left high beam Left low beam Left turn signal light Left standing light Left headlamp range adjustment motor (E1m1) The following components are installed in the right front lamp unit: Right high beam Right low beam Right turn signal light Right standing light Right headlamp range adjustment motor (E2m1) BASIC KNOWLEDGE > STANDING LIGHT ACTUATION, FUNCTION - GF82.10-P-3000MCU Fig 1: Identifying Lamp Unit Components Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

unit

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1448 · Applies to: 450, 451, 452, 454 · AR: GF82.30-P-5000MCU

Combination switch, component description S4 GF82.30-P-5000MCU BASIC KNOWLEDGE > TURN SIGNAL INDICATOR ACTUATION, FUNCTION - GF82.10-P- 3008MCU > MODEL 451.3 /4 Functions Turn signals One-touch turn signaling Hazard warning flashing Turn signaling and one-touch turn signaling Function requirements: Circ. 15 ON Turn signals Fig 1: Turn Signal Indicator Actuation Function Chart Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

ILLUMINATION (IBL) - GF82.20-P-0998MCC >

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1455 · Applies to: 450, 451, 452, 454 · AR: GF82.20-P-0998MCC

MODEL 451.3 /4

Interior illumination (IBL) function

GF82.20-P- 0002MCC

Interior illumination (IBL), location of components

GF82.20-P-0002- 01MCC Wiring diagram interior illumination * not for USA PE82.20-P- 2000MCC Model 451.3## /4## ## up to 013644

• not for USA PE82.20-P- 2000MCD Model 451.3## /4## ## as of 013645

• for USA only PE82.20-P- 2000MCU

Overview of interior illumination (IBL) system components

GF82.20-P- 9997MCC BASIC KNOWLEDGE > INTERIOR LAMP, COMPONENT DESCRIPTION - GF82.20-P- 5221MCC > MODEL 451.3 /4 Location The interior lamp is in the headliner between the sun visors. Design The interior lamp consists of a lamp unit and the interior lamp switch. Switch positions Fig 1: Identifying Interior Lamp Component Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

The interior lamp switch has 3 possible switch positions:

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1456 · Applies to: 450, 451, 452, 454 · AR: GF82.20-P-9997MCC, GF82.20-P-5221MCC, GF54.21-P-4157MCC, GF54.21-P-4157MCU, GF82.20-P-0998MCC

Switch pushed forwards interior lights permanently on, irrespective of whether a door was opened Switch in center position interior lights permanently off Switch pushed backwards automatic interior light control active BASIC KNOWLEDGE > OVERVIEW OF INTERIOR ILLUMINATION (IBL) SYSTEM COMPONENTS - GF82.20-P-9997MCC > MODEL 451.3 /4 Interior lamp, component description E15/4 GF82.20-P-5221MCC Component description for the SAM control unit N10/10

• not for USA GF54.21-P-4157MCC
• for USA only GF54.21-P-4157MCU Contents, function description of interior illumination (IBL)

GF82.20-P-0998MCC BASIC KNOWLEDGE > PANIC ALARM, LOCATION OF COMPONENTS - GF82.25-P-0012- 01MCU > Fig 1: Locating Panic Alarm Components Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

BASIC KNOWLEDGE > PANIC ALARM FUNCTION - GF82.25-P-0012MCU >

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1457 · Applies to: 450, 451, 452, 454 · AR: GF82.25-P-0012MCU

MODEL 451.3 /4 Function requirements: Circuit 15 Off General The panic alarm provides a facility for triggering a visual or acoustic alarm using the transmitter key (e.g. in an emergency situation). Functions Triggering the panic alarm Canceling the panic alarm Triggering the panic alarm If the panic alarm button on the transmitter key is pressed for t ≥ 1 s, a radio signal is transmitted to the SAM control unit, which checks the transmitter key authorization. If the authorization is valid, an acoustic and a visual alarm are triggered. The acoustic alarm is issued via the horn, and the visual alarm is issued via the: Left turn signal light Right turn signal light Left brake/turn signal light Fig 1: Panic Alarm Function Chart Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

BASIC KNOWLEDGE > WIPER SYSTEM (WSA), FUNCTION - GF82.30-P-0003MCU >

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1460 · Applies to: 450, 451, 452, 454 · AR: GF82.30-P-0003MCU, GF82.30-P-2300MCU, GF82.30-P-2200MCU, PE82.30-P-2000MCU, GF82.30-P-0998MCU

MODEL 451.3 /4 The wiper system (WSA) is operated centrally using the right wiper switch (S4/4). The position of the wiper switch is read in by the SAM control unit (N10/10). The SAM control unit actuates the following components directly: Wiper motor (M6/1) Rear-end door wiper motor (M6/4) (with model 451.3) The SAM control unit is notified of the park position of the wiper arms via a signal contact that is integrated in the wiper motors. The window washer fluid pump (M5/1) is actuated directly via the wiper switch. Functions Windshield Wiping at slow speed Wiping at fast speed Wiping with washer fluid Intermittent wipe Rear window (with model 451.3) Intermittent wipe Wiping with washer fluid Automatic wiping when reverse gear engaged

Wiper system (WSA), location of components

GF82.30-P-0003- 01MCU

Wiper system (WSA) block diagram

GF82.30-P-0003- 04MCC

Windshield wiper (WS) system, function

GF82.30-P-2300MCU

Rear window wiper system, function On model 451.3 GF82.30-P-2200MCU Wiring diagram of windscreen wiper

PE82.30-P-2000MCU BASIC KNOWLEDGE > CONTENTS, FUNCTION DESCRIPTION OF WIPER SYSTEM (WSA) - GF82.30-P-0998MCU > MODEL 451.3 /4

Wiper system (WSA), function

GF82.30-P-0003MCU

Wiper system (WSA), location of components

GF82.30-P-0003-01MCU

Wiper system (WSA) block diagram

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1461 · Applies to: 450, 451, 452, 454 · AR: GF82.30-P-2300MCU, GF82.30-P-2200MCU, PE82.30-P-2000MCU, GF82.30-P-9997MCU

GF82.30-P-0003-04MCC

Windshield wiper (WS) system, function

GF82.30-P-2300MCU

Rear window wiper system, function On model 451.3 GF82.30-P-2200MCU Wiring diagram of windscreen wiper

PE82.30-P-2000MCU

Overview of system components, wiper system (WSA)

GF82.30-P-9997MCU BASIC KNOWLEDGE > REAR WINDOW WIPER SYSTEM, FUNCTION - GF82.30-P- 2200MCU > MODEL 451.3 Function requirements: Circuit 15 On Functions Intermittent wipe Wiping with washer fluid Automatic wiping when reverse gear engaged Fig 1: Rear Window Wiper System Function Chart Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Location

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1468 · Applies to: 450, 451, 452, 454 · AR: GF82.30-P-5020MCC

The wiper motor is located directly in front of the splash wall. Task Windshield wiper drive Park position feedback via integrated signal contact The wiper motor is actuated and the signal contact evaluated by the SAM control unit (N10/10). BASIC KNOWLEDGE > TAILGATE WIPER MOTOR, COMPONENT DESCRIPTION - GF82.30-P-5020MCC > MODEL 451.3 Location Fig 1: Identifying Wiper Motor Courtesy of MERCEDES-BENZ OF NORTH AMERICA. Fig 1: Identifying Tailgate Wiper Motor Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

The tailgate wiper motor is located at the top of the rear-end door.

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1469 · Applies to: 450, 451, 452, 454 · AR: GF82.30-P-9997MCU, GF54.30-P-6000MCU, GF54.21-P-6000MCC, GF82.35-P-5000MCC, GF82.30-P-5010MCC (+5 more)

Task Windshield wiper drive Park position feedback via integrated signal contact The wiper motor is actuated and the signal contact evaluated by the SAM control unit (N10/10). BASIC KNOWLEDGE > OVERVIEW OF SYSTEM COMPONENTS, WIPER SYSTEM (WSA) - GF82.30-P-9997MCU > MODEL 451.3 /4 Instrument cluster, component description A1 GF54.30-P-6000MCU Rain/light sensor, component description B38For vehicles with code (V54) Rain/light sensor GF54.21-P-6000MCC Windshield washer fluid pump, component description M5/1 GF82.35-P-5000MCC Wiper motor, component description M6/1 GF82.30-P-5010MCC Rear-end door wiper motor, component description M6/4in case of model 451.3 GF82.30-P-5020MCC SAM control unit, component description N10/10 GF54.21-P-4157MCU Automated manual transmission control unit, component description N15/6 GF26.19-P-1010MCU Wiper switch, component description S4/4 GF82.30-P-5002MCC Contents, function description of wiper system (WSA)

GF82.30-P-0998MCU BASIC KNOWLEDGE > WINDSHIELD WASHER FLUID PUMP, COMPONENT DESCRIPTION - GF82.35-P-5000MCC > MODEL 451.3 /4

Location

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1470 · Applies to: 450, 451, 452, 454 · AR: PE82.00-P-1100MCU, PE82.10-P-2000MCU, PE82.10-P-2220MCU, PE82.20-P-2000MCU, PE82.20-P-2000MCV (+1 more)

The windshield washer fluid pump is located at the left in the direction of travel on the windshield washer fluid reservoir. Task Washer fluid supply to the spray nozzles. It is actuated directly by the right wiper switch (S4/4). On model 451.3 the windshield washer fluid pump is designed as a duo pump. Depending on actuation, the pump's direction of rotation changes and therefore the conveying direction between the front and rear end. WIRING DIAGRAMS > OVERVIEW OF WIRING DIAGRAMS FOR ELECTRICAL SYSTEM, BODY - PE82.00-P-1100MCU > MODEL 451 PE82.10-P- 2000MCU Exterior lights wiring diagram MODEL 451 PE82.10-P-2000MCU PE82.10-P- 2220MCU Wiring diagram of brake lights and turn signal/hazard warning flasher MODEL 451 PE82.10-P-2220MCU PE82.20-P- 2000MCU Wiring diagram interior illumination MODEL 451 without code (876) Interior lights package PE82.20-P-2000MCU PE82.20-P- 2000MCV Wiring diagram interior illumination MODEL 451 with code (876) Interior lights package PE82.20-P-2000MCV PE82.30-P- 2000MCU Wiring diagram of windscreen wiper MODEL 451 PE82.30-P-2000MCU Fig 1: Identifying Windshield Washer Fluid Pump Components Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

PE82.60-P-

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1471 · Applies to: 450, 451, 452, 454 · AR: PE82.60-P-2000MCU, PE82.60-P-2000MCE, PE82.60-P-2000MCF, PE82.60-P-2000MCG, PE82.70-P-2103MCU (+1 more)

2000MCU Wiring diagram radio MODEL 451 to 30.8.10 PE82.60-P-2000MCU PE82.60-P- 2000MCE Wiring diagram radio MODEL 451 as of 31.8.10 Radio entry PE82.60-P-2000MCE PE82.60-P- 2000MCF Wiring diagram radio MODEL 451 as of 31.8.10 Premium radio with Sound Premium PE82.60-P-2000MCF PE82.60-P- 2000MCG Wiring diagram radio MODEL 451 as of 31.8.10 Premium radio with Sound Basis PE82.60-P-2000MCG PE82.70-P- 2103MCU Hands-free system control unit wiring diagram MODEL 451 to 30.8.10 PE82.70-P-2103MCU PE82.85-P- 2002MCU Wiring diagram of communications interface (KOM) MODEL 451 to 30.8.10 PE82.85-P-2002MCU WIRING DIAGRAMS > LEGEND FOR WIRING DIAGRAM OF EXTERIOR LIGHTS - PE82.10- P-2000-60MCU > MODEL 451 Code Designation Coordinates B38 Rain sensor/light sensor 2L E1 Left front headlamp unit 16L E1e1 Left main beam 17L E1e2 Left low beam 16L E1m1 Left headlamp range adjustment motor 15L E2 Right front headlamp unit 21L E2e1 Right main beam 23L E2e2 Right low beam 22L E2m1 Right headlamp range adjustment motor 20L E3 Left taillamp 36L E3e2 Left tail light 34L E3e3 Left backup lamp 37L E4 Right taillamp 40L E4e2 Right tail light 41L E4e3 Right backup lamp 38L

WIRING DIAGRAMS > EXTERIOR LIGHTS WIRING DIAGRAM - PE82.10-P-2000MCU >

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1477 · Applies to: 450, 451, 452, 454 · AR: PE82.10-P-2000MCU

MODEL 451 PE82.10-P- 2000-99MCU Exterior lights wiring diagram

PE82.10-P- 2000-99MCU PE82.10-P- 2000-60MCU Legend for wiring diagram of exterior lights

PE82.10-P- 2000-60MCU OV00.01-P- 1901-03MCC Use of wiring diagrams

OV00.01-P- 1901-03MCC OV00.01-P- 1901MCU Search aid for all wiring diagram groups

OV00.01-P- 1901MCU OV00.01-P- OV00.01-P- Fig 3: Exterior Lights Wiring Diagram (3 Of 3) Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

WIRING DIAGRAMS > WIRING DIAGRAM OF BRAKE LIGHTS AND TURN SIGNAL/HAZARD

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1482 · Applies to: 450, 451, 452, 454 · AR: PE82.10-P-2220MCU

WARNING FLASHER - PE82.10-P-2220MCU > MODEL 451 PE82.10-P- 2220-97MCU Wiring diagram turn signal/hazard warning lamps

PE82.10-P- 2220-97MCU OV00.01-P- 1901-03MCC Use of wiring diagrams

OV00.01-P- 1901-03MCC OV00.01-P- 1901MCU Search aid for all wiring diagram groups

OV00.01-P- 1901MCU OV00.01-P- 1001-27MC Abbreviations for wiring diagrams

OV00.01-P- 1001-27MC Fig 3: Exterior Lights Wiring Diagram (3 Of 3) Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

WIRING DIAGRAMS > WIRING DIAGRAM INTERIOR ILLUMINATION - PE82.20-P-2000MCU

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1487 · Applies to: 450, 451, 452, 454 · AR: PE82.20-P-2000MCU

MODEL 451 except CODE (876) Interior lights package PE82.20-P- 2000-97MCU Wiring diagram interior illumination

PE82.20-P- 2000-97MCU OV00.01-P- 1901-03MCC Use of wiring diagrams

OV00.01-P- 1901-03MCC OV00.01-P- 1901MCU Search aid for all wiring diagram groups

OV00.01-P- 1901MCU OV00.01-P- 1001-27MC Abbreviations for wiring diagrams

OV00.01-P- 1001-27MC Fig 3: Exterior Lights Wiring Diagram (3 Of 3) Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

OV00.01-P-

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1488 · Applies to: 450, 451, 452, 454 · AR: PE82.20-P-2000MCV

1001-28MC Abbreviations of signal and circuit designations for wiring diagrams

OV00.01-P- 1001-28MC GF00.19-P- 1000MC Location and assignment of line and plug connectors

GF00.19-P- 1000MCU GF00.19-P- 2000MCU Location and assignment of ground points

GF00.19-P- 2000MCU GF00.19-P- 3000MCU Location and assignment of Z connector sleeves (line connectors in wiring harness)

GF00.19-P- 3000MCU PE54.00-P- 1100MCU

Further wiring diagrams PE54.00-P- 1100MCU WIRING DIAGRAMS > WIRING DIAGRAM INTERIOR ILLUMINATION - PE82.20-P-2000MCV

MODEL 451 as of 31.8.10 with CODE (876) Interior lights package PE82.20-P- 2000-97MCV Wiring diagram interior illumination

PE82.20-P- 2000-97MCV OV00.01-P- 1901-03MCC Use of wiring diagrams

OV00.01-P- 1901-03MCC OV00.01-P- 1901MCU Search aid for all wiring diagram groups

OV00.01-P- 1901MCU OV00.01-P- 1001-27MC Abbreviations for wiring diagrams

OV00.01-P- 1001-27MC OV00.01-P- 1001-28MC Abbreviations of signal and circuit designations for wiring diagrams

OV00.01-P- 1001-28MC GF00.19-P- 1000MC Location and assignment of line and plug connectors

GF00.19-P- 1000MCU GF00.19-P- 2000MCU Location and assignment of ground points

GF00.19-P- 2000MCU GF00.19-P- 3000MCU Location and assignment of Z connector sleeves (line connectors in wiring harness)

GF00.19-P- 3000MCU PE54.00-P- 1100MCU

Further wiring diagrams PE54.00-P- 1100MCU WIRING DIAGRAMS > WIRING DIAGRAM INTERIOR ILLUMINATION - PE82.20-P-2000- 97MCU > Code: Designation: Position: E15/4 Front interior lamp 7L E15/4s1 Interior lamp switch

K116 Relay for shutoff-capable interior lamp 3L

WIRING DIAGRAMS > WIRING DIAGRAM INTERIOR ILLUMINATION - PE82.20-P-2000MCU

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1492 · Applies to: 450, 451, 452, 454 · AR: PE82.20-P-2000MCU

MODEL 451 except CODE (876) Interior lights package PE82.20-P- 2000-97MCU Wiring diagram interior illumination

PE82.20-P- 2000-97MCU Fig 2: Interior Illumination Wiring Diagram (2 Of 2) Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

OV00.01-P-

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1493 · Applies to: 450, 451, 452, 454 · AR: PE82.30-P-2000MCU, OV00.01-P-1901MCU, GF00.19-P-1000MCU, GF00.19-P-2000MCU, GF00.19-P-3000MCU

1901-03MCC Use of wiring diagrams

OV00.01-P- 1901-03MCC OV00.01-P- 1901MCU Search aid for all wiring diagram groups

OV00.01-P- 1901MCU OV00.01-P- 1001-27MC Abbreviations for wiring diagrams

OV00.01-P- 1001-27MC OV00.01-P- 1001-28MC Abbreviations of signal and circuit designations for wiring diagrams

OV00.01-P- 1001-28MC GF00.19-P- 1000MC Location and assignment of line and plug connectors

GF00.19-P- 1000MCU GF00.19-P- 2000MCU Location and assignment of ground points

GF00.19-P- 2000MCU GF00 19 P 3000MCU Location and a ignment of Z connector leeve (line connectors in wiring harness)

GF00 19 P 3000MCU PE54.00-P- 1100MCU

Further wiring diagrams PE54.00-P- 1100MCU WIRING DIAGRAMS > WIRING DIAGRAM OF WINDSHIELD WIPER - PE82.30-P-2000MCU > MODEL 451 PE82 30 P 2000 99MCU Wiring diagram of windscreen wiper

PE82 30 P 2000 99MCU PE82.30-P-2000- 60MCU Legend for wiring diagram of windshield wiper

PE82.30-P-2000- 60MCU OV00.01-P-1901- 03MCC Use of wiring diagrams

OV00.01-P-1901- 03MCC OV00.01-P-1901MCU Search aid for all wiring diagram groups

OV00.01-P-1901MCU OV00.01-P-1001- 27MC Abbreviations for wiring diagrams

OV00.01-P-1001- 27MC OV00.01-P-1001- 28MC Abbreviations of signal and circuit designations for wiring diagrams

OV00.01-P-1001- 28MC GF00.19-P-1000MCU Location and assignment of line and connectors

GF00.19-P-1000MCU GF00.19-P-2000MCU Location and assignment of ground points

GF00.19-P-2000MCU GF00.19-P-3000MCU Location and assignment of Z

GF00.19-P-3000MCU

WIRING DIAGRAMS > WIRING DIAGRAM RADIO - PE82.60-P-2000MCE >

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1502 · Applies to: 450, 451, 452, 454 · AR: PE82.60-P-2000MCE

MODEL 451 as of 31.8.10 Entry radio PE82.60-P-2000- 97MCE Wiring diagram radio

PE82.60-P-2000- 97MCE OV00.01-P-1901- Use of wiring diagrams

OV00.01-P-1901- Fig 2: Windscreen Wiper Wiring Diagram (2 Of 2) Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

X39/45

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1505 · Applies to: 450, 451, 452, 454 · AR: PE82.60-P-2000MCF, OV00.01-P-1901MCC, OV00.01-P-1901MCU, GF00.19-P-1000MCC, GF00.19-P-1000MCU (+3 more)

External audio source separation point 44L Z28/18 Sound system antenna actuation connector sleeve 22F Z3/44 Instrument cluster - radio circuit 15 (fused) connector sleeve 17F Z37/42 CAN bus (low) connector sleeve 4H Z81 Circuit 58d connector sleeve 15F WIRING DIAGRAMS > WIRING DIAGRAM RADIO - PE82.60-P-2000MCF > MODEL 451 as of 31.8.10 Premium radio with Sound Premium PE82.60- P-2000- 97MCF Wiring diagram radio

WIRING DIAGRAM RADIO - PE82.60-P- 2000-97MCF OV00.01- P-1901- 03MCC Use of wiring diagrams

OV00.01-P-1901- 03MCC OV00.01- P- 1901MCC Search aid for all wiring diagram groups * not for USA OV00.01-P-1901MCC OV00.01- P- 1901MCU Search aid for all wiring diagram groups * for USA only OV00.01-P-1901MCU OV00.01- P-1001- 27MC Abbreviations for wiring diagrams

OV00.01-P-1001-27MC OV00.01- P-1001- 28MC Abbreviations of signal and circuit designations for wiring diagrams

OV00.01-P-1001-28MC GF00.19- P- 1000MCC Location and assignment of line and plug connectors * not for USA GF00.19-P-1000MCC GF00.19- P- 1000MCU Location and assignment of line and plug connectors * for USA only GF00.19-P-1000MCU GF00.19- P- 2000MCC Location and assignment of ground points * not for USA GF00.19-P-2000MCC GF00.19- P- 2000MCU Location and assignment of ground points * for USA only GF00.19-P-2000MCU GF00.19- P- 3000MCC Location and assignment of Z connector sleeves (line connectors in wiring harness) * not for USA GF00.19-P-3000MCC

WIRING DIAGRAMS > WIRING DIAGRAM RADIO - PE82.60-P-2000MCG >

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1511 · Applies to: 450, 451, 452, 454 · AR: PE82.60-P-2000MCG

MODEL 451 as of 31.8.10 Premium radio with Sound Basis PE82.60-P- 2000- 97MCG Wiring diagram radio

PE82.60-P- 2000- 97MCG Fig 4: Radio Wiring Diagram (4 Of 4) Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

X134/2

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1514 · Applies to: 450, 451, 452, 454 · AR: PE82.60-P-2000MCU

Sound connecting point 2 27G X35/1 Left door separation point 43F X35/2 Right door separation point 35G X39/45 External audio source separation point 54L Z28/5 Left door speaker group connector sleeve (+) 43H Z28/6 Left door speaker group connector sleeve (-) 44H Z28/7 Right door speaker group connector sleeve (+) 35H Z28/8 Right door speaker group connector sleeve (-) 36H Z3/44 Instrument cluster - radio circuit 15 (fused) connector sleeve 15F Z37/42 CAN bus (low) connector sleeve 2H Z81 Circuit 58d connector sleeve 13F WIRING DIAGRAMS > WIRING DIAGRAM RADIO - PE82.60-P-2000MCU > MODEL 451 up to 30.8.10 PE82.60-P- 2000-97MCU Wiring diagram radio

PE82.60-P- 2000-97MCU OV00.01-P- 1901-03MCC Use of wiring diagrams

OV00.01-P- 1901-03MCC OV00.01-P- 1901MCU Search aid for all wiring diagram groups

OV00.01-P- 1901MCU OV00.01-P- 1001-27MC Abbreviations for wiring diagrams

OV00.01-P- 1001-27MC OV00.01-P- 1001-28MC Abbreviations of signal and circuit designations for wiring diagrams

OV00.01-P- 1001-28MC GF00.19-P- 1000MCU Location and assignment of line and plug connectors

GF00.19-P- 1000MCU GF00.19-P- 2000MCU Location and assignment of ground points

GF00.19-P- 2000MCU GF00.19-P- 3000MCU Location and assignment of Z connector sleeves (line connectors in wiring harness)

GF00.19-P- 3000MCU PE54.00-P- 1100MCU

Further wiring diagrams PE54.00-P- 1100MCU PE82.00-P- 1100MCU

Further wiring diagrams PE82.00-P- 1100MCU WIRING DIAGRAMS > WIRING DIAGRAM RADIO - PE82.60-P-2000-97MCU >

WIRING DIAGRAMS > HANDS-FREE SYSTEM CONTROL UNIT WIRING DIAGRAM -

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1518 · Applies to: 450, 451, 452, 454 · AR: PE82.70-P-2103MCU

PE82.70-P-2103MCU > MODEL 451 up to 30.8.10 PE82.70-P- 2103-97MCU Hands-free system control unit wiring diagram

PE82.70-P- 2103-97MCU Fig 3: Radio Wiring Diagram (3 Of 3) Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

OV00.01-P-

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1519 · Applies to: 450, 451, 452, 454 · AR: PE82.85-P-2002MCU

1901-03MCC Use of wiring diagrams

OV00.01-P- 1901-03MCC OV00.01-P- 1901MCU Search aid for all wiring diagram groups

OV00.01-P- 1901MCU OV00.01-P- 1001-27MC Abbreviations for wiring diagrams

OV00.01-P- 1001-27MC OV00.01-P- 1001-28MC Abbreviations of signal and circuit designations for wiring diagrams

OV00.01-P- 1001-28MC GF00.19-P- 1000MCU Location and assignment of line and plug connectors

GF00.19-P- 1000MCU GF00.19-P- 2000MCU Location and assignment of ground points

GF00.19-P- 2000MCU GF00.19-P- 3000MCU Location and assignment of Z connector sleeves (line connectors in wiring harness)

GF00.19-P- 3000MCU PE07.00-P- 1100MCU

Further wiring diagrams PE07.00-P- 1100MCU PE26.00-P- 1100MCU

Further wiring diagrams PE26.00-P- 1100MCU PE54.00-P- 1100MCU

Further wiring diagrams PE54.00-P- 1100MCU PE88.00-P- 1100MCU

Further wiring diagrams PE88.00-P- 1100MCU WIRING DIAGRAMS > WIRING DIAGRAM OF COMMUNICATIONS INTERFACE (KOM) - PE82.85-P-2002MCU > MODEL 451 up to 30.8.10 PE82.85-P- 2002-97MCU Wiring diagram of communications interface (KOM)

PE82.85-P- 2002-97MCU OV00.01-P- 1901-03MCC Use of wiring diagrams

OV00.01-P- 1901-03MCC OV00.01-P- 1901MCU Search aid for all wiring diagram groups

OV00.01-P- 1901MCU OV00.01-P- 1001-27MC Abbreviations for wiring diagrams

OV00.01-P- 1001-27MC OV00.01-P- 1001-28MC Abbreviations of signal and circuit designations for wiring diagrams

OV00.01-P- 1001-28MC GF00.19-P- 1000MCU Location and assignment of line and plug connectors

GF00.19-P- 1000MCU

Further wiring diagrams

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1661 · Applies to: 450, 451, 452, 454 · AR: PE82.00-P-1100MCU, PE83.00-P-1100MCU, PE91.00-P-1100MCU, PE54.25-P-2050MCU, OV00.01-P-1901MCU (+5 more)

PE82.00-P-1100MCU Further wiring diagrams PE83.00-P-1100MCU Further wiring diagrams PE91.00-P-1100MCU WIRING DIAGRAMS > ELECTRICAL FUNCTION DIAGRAM FOR ELECTRICAL CENTER - PE54.25-P-2050MCU > MODEL 451 Electrical function diagram for electrical center PE54.25-P-2050-99MCU Legend of electrical function diagram for electrical center PE54.25-P-2050-60MCU Use of wiring diagrams OV00.01-P-1901-03MCC Search aid for all wiring diagram groups OV00.01-P-1901MCU Abbreviations for wiring diagrams OV00.01-P-1001-27MC Abbreviations of signal and circuit designations for wiring diagrams OV00.01-P-1001-28MC Location and assignment of line and connectors GF00.19-P-1000MCU Location and assignment of ground points GF00.19-P-2000MCU Location and assignment of Z connector sleeves (line connectors in wiring harness) GF00.19-P-3000MCU Further wiring diagrams PE07.00-P-1100MCU Further wiring diagrams PE26.00-P-1100MCU Further wiring diagrams PE42.00-P-1100MCU Further wiring diagrams PE46.00-P-1100MCU Further wiring diagrams PE54.00-P-1100MCU WIRING DIAGRAMS > WIRING DIAGRAM LARGE INSTRUMENT (INSTRUMENT CLUSTER) - PE54.30-P-2001-97MCU > Code: Designation: Position: A1 Instrument cluster 25A A1 Instrument cluster 5A A1 Instrument cluster 43A A1 Instrument cluster 12A A1 Instrument cluster 36A A1e1 Left tern signal indicator lamp 29A A1e15 Airbag indicator and warning lamp 21A A1e17 ABS indicator lamp 15A A1e18 Electric steering indicator lamp 45A

The tire inflation pressure to be adjusted results from the specified tire inflation pressure + 0.2 bar.

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2306 · Applies to: 450, 451, 452, 454 · AR: AP82.10-P-8260MCU

MAINTENANCE > CHECK AND CORRECT THE ADJUSTMENT OF THE HEADLAMPS - AP82.10-P-8260MCU > MODEL 451.3 /4 Shown on vehicle with code (V07) Front fog lamps (FFO) MODIFICATION NOTES Fig 1: Identifying Right And Left Main And Low Beams, Fog Lamps And Adjustment Screws Courtesy of MERCEDES-BENZ OF NORTH AMERICA. Fig 2: Identifying Left And Right Front Headlamps And Expanding Rivet Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

left front lamp unit (E1)

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2308 · Applies to: 450, 451, 452, 454 · AR: AR82.10-P-4730MCU

or right front lamp unit (E2) is installed.To drill out the rivet (3) the left front lamp unit (E1) or right front lamp unit (E2) must be removed. See: ↓ Remove/install lamp unit AR82.10-P-4730MCU 9 Install left front lamp unit (E1) and right front lamp unit (E2) If the rivet (3) above the adjustment screw (vertical) (1) has been removed. AR82.10-P-4730MCU 10 Adjust the left high beam (E1e1) or right high beam (E2e1) at the adjustment screw (vertical) (1) If the left high beam (E1e1) or right high beam (E2e1) has to be adjusted in the vertical direction. AP82.10-P-8260- 02MCC 11 Switch on left low beam (E1e2) and right low beam (E2e2)

12 Check adjustment of the left low beam (E1e2) and the right low beam (E2e2) if necessary adjust the left low beam (E1e2) or right low beam (E2e2) at the adjustment screw (horizontal) (2)

AP82.10-P-8260- 05MCC 13 Remove rivet (3) or expanding rivet (4) which is located above the adjustment screw (vertical) (1) If the left low beams (E1e2) or right low beam (E2e2) has to be adjusted in the vertical direction and the rivet (3) or expanding rivet (4) is still fitted. The expanding rivet (4) can be removed when the left front lamp unit (E1) or right front lamp unit (E2) is installed.To drill out the rivet (3) the left front lamp unit (E1) or right front lamp unit (E2) must be removed. See: ↓

Remove/install lamp unit AR82.10-P-4730MCU

Install left front lamp

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2309 · Applies to: 450, 451, 452, 454 · AR: AR82.10-P-4730MCU, AP40.15-P-4061MCU

14 Install left front lamp unit (E1) and right front lamp unit (E2) If the rivet (3) above the adjustment screw (vertical) (1) has been removed. AR82.10-P-4730MCU 15 Adjust left low beam (E1e2) or right low beam (E2e2) at the adjustment screw (vertical) (1) If the left low beam (E1e2) or right low beam (E2e2) has to be adjusted in the vertical direction. AP82.10-P-8260- 05MCC 16 Switch on left front fog lamp (E5/1) and right front fog lamp (E5/2) On vehicles with code (V07) Front fog lamps (FFO)

17 Check adjustment for left fog lamp (E5/1) and right fog lamp (E5/2), correct if necessary On vehicles with code (V07) Front fog lamps (FFO) AP82.10-P-8260- 04MCC Install

18 Clip the expanding rivet (4) above the adjustment screw (vertical) (1) into the left front lamp unit (E1) or right front lamp unit (E2) If the rivet (3) or expanding rivet (4) above the adjustment screw (vertical) (1) has been removed.

PARTS ORDERING NOTES Part no. Designation Quantity DG 88 (see EPC) Expanding rivet 2 MAINTENANCE > CORRECT TIRE INFLATION PRESSURE - AP40.15-P-4061MCU > MODEL 451.3/4

Always store all spare components in a dry, sealed-off area. Do not remove stop plugs in new components

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2413 · Applies to: 450, 451, 452, 454 · AR: AP83.00-P-8384MCC

until just before they are installed. Use special care when handling the fluid reservoir with its integral desiccant. When a fluid reservoir is left open, the drier element quickly becomes saturated with moisture, rendering it useless. Check drier element packaging for damage. Dispose of drier elements with damaged packaging. Install the drier element no later than 20 minutes after opening the packaging. Further protection against moisture is provided by carefully evacuating the air conditioning system following repair operations. By generating vacuum in the system, the evacuation process removes any moisture that might have penetrated into the system. MAINTENANCE > REPLACE COMBINATION FILTER - AP83.00-P-8384MCC > MODEL 451.3/4 with CODE (I01) Air conditioning Plus MODIFICATION NOTES 14.6.07 Operation step: Remove driver-side footrest, added Step 2 Remove/install

1 Adjust left seat to the rear

2 Remove foot support on passenger side On vehicles with code (RHD) right-hand drive vehicle AR68.30- P- 1340MCE 3 Unscrew bolts (2) on cover (1) Only if the bolts (2) are fitted.

4 Unclip bracket (arrows) on cover (1) and remove cover (1) If the brackets (arrows) on the cover (1) are damaged, then cover (1) is fastened with bolts (2). Installation: Pay attention to the correct retention of the bracket (arrows) on the cover (1). If necessary fasten cover (1) with bolts (2).

Fig 1: Identifying Cover, Screw And Combination Filter Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Remove

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2414 · Applies to: 450, 451, 452, 454 · AR: AR83.00-Z-9132CB, AR83.55-P-5300MCC, AR83.55-P-5300MCU, AR83.00-Z-9451CA, AR83.10-P-0100MCC (+5 more)

5 Remove combination filter (3) from the air conditioner housing Installation: Observe installation position of combination filter (3). Replace combination filter (3).

6 Install in the reverse order

TESTING & REPAIR > TESTING AND REPAIR WORK: SMART: CLIMATE CONTROL - AR83.00-Z-9132CB > ENGINE 132 Remove/install refrigerant compressor ENGINE 132.9 in MODEL 451.3/4 with CODE (I01) Air conditioning Plus AR83.55-P-5300MCC Remove/install refrigerant compressor ENGINE 132.910 in MODEL 451.3/4 with CODE (I01) Air conditioning Plus AR83.55-P-5300MCU TESTING & REPAIR > TESTING AND REPAIR WORK: SMART: CLIMATE CONTROL - AR83.00-Z-9451CA > MODEL 451 Air recirculation unit, remove/install MODEL 451.3/4 AR83.10-P-0100MCC Air recirculation unit, remove/install MODEL 451.3/4 AR83.10-P-0100MCU Check air conditioning system for leakage MODEL 450, 451, 452, 454... AR83.30-P-1761MCC Check air conditioning system for leakage MODEL 450, 451, 452, 454... AR83.30-P-1761MCE Cleaning the evaporator MODEL 451.3/4 with CODE (I01) Air conditioning Plus AR83.30-P-5555MCC Connect diagnostic tool to auxiliary heater (water heater) MODEL 451... AR83.70-P-0017MCC Drain, evacuate and refill air conditioning, check function and check for leaks MODEL 451.3/4 with CODE (I01) Air conditioning Plus AR83.30-P-1760MCC Function test for Thermotop E auxiliary heater MODEL 451... AR83.70-P-2028MCC Override fault interlock for auxiliary heater Thermotop E (water heater) MODEL 451... AR83.70-P-0009MCC Perform air conditioning system leak test MODEL 451.3/4 (except 451.391 /491) with CODE (I01) Air conditioning Plus AR83.30-P-1011MCC Perform air conditioning system leak test MODEL 451.3/4 (except 451.391 /491) with CODE (I01) Air conditioning Plus AR83.30-P-1011MCU

Perform air conditioning system leak

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2415 · Applies to: 450, 451, 452, 454 · AR: AR83.30-P-1011MEV, AR83.70-P-0012MEV, AR83.25-P-1124MCC, AR83.25-P-1124MCF, AR83.25-P-1200MCC (+5 more)

test MODEL 451.391/ 491 AR83.30-P-1011MEV Perform new teach-in for Telestart transmitter MODEL 451.391/ 491 AR83.70-P-0012MEV Remove and install air conditioning control and operating unit MODEL 451.3/4 up to 30.8.10 with CODE (I01) Air conditioning Plus AR83.25-P-1124MCC Remove and install air conditioning control and operating unit MODEL 451.3/4 as of 31.8.10 with CODE (I01) Air conditioning Plus AR83.25-P-1124MCF Remove and install blower motor MODEL 451.3/4 AR83.25-P-1200MCC Remove and install blower motor MODEL 451.3/4 AR83.25-P-1200MCU Remove and install evaporator temperature sensor MODEL 451.3/4 with CODE (I01) Air conditioning Plus AR83.30-P-8085MCC Remove and install series resistor for heater blower MODEL 451.3/4 AR83.25-P-1250MCC Remove and install Telestart receiver MODEL 451.391/ 491 AR83.70-P-0003MEV Remove and install timer switch MODEL 451... AR83.70-P-5892MCC Remove/install actuator motor for fresh and recirculated air flaps MODEL 451.3/4 with CODE (I01) Air conditioning Plus AR83.10-P-2001MCC Remove/install actuator motor for fresh and recirculated air flaps MODEL 451.3/4 with CODE (I01) Air conditioning Plus AR83.10-P-2001MCU Remove/install air conditioner housing MODEL 451.3## /4## (except 451.391 /491) 1# with CODE (I01) Air conditioning Plus AR83.30-P-5200MCC Remove/install air conditioner housing MODEL 451.3## /4## 2# with CODE (I01) Air conditioning Plus AR83.30-P-5200MCE Remove/install air conditioner housing MODEL 451.3/4 with CODE (I01) Air conditioning Plus AR83.30-P-5200MCU Remove/install air conditioner housing MODEL 451.391/ 491 AR83.30-P-5200MEV Remove/install air conditioner housing temperature sensor MODEL 451.391/ 491 AR83.30-P-8088MCV Remove/install blend air flap actuator motor MODEL 451.3/4 with CODE (I01) Air conditioning Plus AR83.10-P-2026MCC Remove/install condenser MODEL 451.3/4 with CODE (I01) Air conditioning Plus AR83.30-P-6540MCC Remove/install condenser MODEL 451.3/4 with CODE (I01) Air conditioning Plus AR83.30-P-6540MCU Remove/install condenser filling MODEL 451.3/4 with CODE (I01) AR83.30-P-5536MCC

valve

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2416 · Applies to: 450, 451, 452, 454 · AR: AR83.70-P-5700MCC, AR83.30-P-6525MCC, AR83.30-P-5520MCC, AR83.30-P-5520MCU, AR83.10-P-1401MCC (+5 more)

Air conditioning Plu Remove/install coolant circulation pump MODEL 451... AR83.70-P-5700MCC Remove/install dehydrator MODEL 451.3/4 with CODE (I01) Air conditioning Plus AR83.30-P-6525MCC Remove/install expansion valve MODEL 451.3/4 (except 451.391 /491) with CODE (I01) Air conditioning Plus AR83.30-P-5520MCC Remove/install expansion valve MODEL 451.3/4 (except 451.391 /491) with CODE (I01) Air conditioning Plus AR83.30-P-5520MCU Remove/install flexible shaft for air distribution MODEL 451.3/4 AR83.10-P-1401MCC Remove/install fresh-air intake MODEL 451.3/4 AR83.10-P-3220MCC Remove/install fresh-air intake MODEL 451.3/4 AR83.10-P-3220MCU Remove/install front intake-side refrigerant line MODEL 451.391/ 491 AR83.50-P-6925MEV Remove/install front thrust-side refrigerant line MODEL 451.391/ 491 AR83.50-P-6825MEV Remove/install fuel metering pump MODEL 451... AR83.70-P-5652MCC Remove/install heat exchanger MODEL 451.3## /4## (except 451.391 /491) 1# AR83.20-P-1100MCC Remove/install heat exchanger MODEL 451.3## /4## 2# with CODE (RHD) Right-hand drive vehicle AR83.20-P-1100MCE Remove/install heat exchanger MODEL 451.3/4 (except 451.391 /491) AR83.20-P-1100MCU Remove/install heater control cable MODEL 451.3/4 except CODE (I01) Air conditioning Plus AR83.20-P-1400MCC Remove/install heater control cable MODEL 451.3/4 except CODE (I01) Air conditioning Plus AR83.20-P-1400MCU Remove/install heater housing MODEL 451.3/4 (except 451.391 /491) except CODE (I01) Air conditioning Plus AR83.25-P-1000MCC Remove/install heater housing MODEL 451.3/4 except CODE (I01) Air conditioning Plus AR83.25-P-1000MCU Remove/install heater unit MODEL 451... AR83.70-P-5302MCC Remove/install heater/ventilation operating unit MODEL 451.3/4 up to 30.8.10 except CODE (I01) Air conditioning Plus AR83.20-P-1850MCC Remove/install heater/ventilation operating unit MODEL 451.3/4 as of 31.8.10 except CODE (I01) Air AR83.20-P-1850MCF

conditioning Plu

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2417 · Applies to: 450, 451, 452, 454 · AR: AR83.70-P-8001MEV, AR83.30-P-5535MCC, AR83.70-P-8000MCC, AR83.30-P-7817MEV, AR83.30-P-7813MCC (+5 more)

Remove/install high-voltage PTC heater MODEL 451.391/ 491 AR83.70-P-8001MEV Remove/install intake manifold filling valve MODEL 451.3/4 with CODE (I01) Air conditioning Plus AR83.30-P-5535MCC Remove/install PTC heater booster MODEL 451.3/4 with ENGINE 660.9 AR83.70-P-8000MCC Remove/install refrigerant line between condenser and expansion valves MODEL 451.391/ 491 AR83.30-P-7817MEV Remove/install refrigerant line between condenser and refrigerant compressor MODEL 451.3## /4## (except 451.391 /491) 1# with CODE (I01) Air conditioning Plus AR83.30-P-7813MCC Remove/install refrigerant line between condenser and refrigerant compressor MODEL 451.3## /4## 2# with CODE (I01) Air conditioning Plus with CODE (RHD) Right-hand drive vehicle AR83.30-P-7813MCE Remove/install refrigerant line between condenser and refrigerant compressor MODEL 451.3## /4## (except 451.391 /491) 1# with CODE (I01) Air conditioning Plus AR83.30-P-7813MCU Remove/install refrigerant line between evaporator and condenser MODEL 451.3/4 (except 451.391 /491) with CODE (I01) Air conditioning Plus AR83.30-P-7812MCC Remove/install refrigerant line between evaporator and condenser MODEL 451.3/4 (except 451.391 /491) with CODE (I01) Air conditioning Plus AR83.30-P-7812MCU Remove/install refrigerant line between refrigerant compressor and evaporator MODEL 451.3## /4## (except 451.391 /491) 1# with CODE (I01) Air conditioning Plus AR83.30-P-7811MCC Remove/install refrigerant line between refrigerant compressor and evaporator MODEL 451.3## /4## (except 451 391 /491) 2# with CODE (I01) Air conditioning Plus AR83.30-P-7811MCE Remove/install refrigerant line between refrigerant compressor and evaporator MODEL 451.3## /4## (except 451.391 /491) 1# with CODE (I01) Air conditioning Plus AR83.30-P-7811MCU Remove/install refrigerant lines at refrigerant compressor MODEL 451.3/4 (except 451.391 /491) with CODE (I01) Air conditioning Plus AR83.30-P-7810MCC Remove/install refrigerant lines at refrigerant compressor MODEL 451.3/4 (except 451.391 /491) with CODE (I01) Air conditioning Plus AR83.30-P-7810MCU Remove/install refrigerant lines at refrigerant compressor MODEL 451.391/491 with ENGINE 780.009 AR83.30-P-7810MEV Remove/install refrigerant pressure MODEL 451.3/4 with CODE (I01) AR83.30-P-5430MCC

en or

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2418 · Applies to: 450, 451, 452, 454 · AR: AR83.70-P-0006MEV, AR83.10-P-0100MCU

Air conditioning Plu Remove/install Telestart antenna MODEL 451.391/ 491 AR83.70-P-0006MEV TESTING & REPAIR > AIR RECIRCULATION UNIT, - AR83.10-P-0100MCU > MODEL 451.3/4 Remove/install

1 Remove heater/air conditioner housing (3) Model 451 (except 451.391/491) with code (I01) Air conditioning Plus AR83.30- P- 5200MCU Model 451 (except 451.391/491) without code (I01) Air conditioning Plus AR83.25- P- 1000MCU Model 451.391/491 AR83.30- P- 5200MEV 2 Disconnect electrical connector (2) from air recirculation flap actuator motor (M39) On vehicles with code (I01) Air conditioning Plus

3 Release air recirculation unit (1) from heater/ air conditioner housing (3) by twisting and remove Installation: Ensure that the seal (4) is correctly located.

4 Remove air recirculation flap actuator motor (M39) from air recirculation unit (1) When replacing the air recirculation unit (1) in vehicles with code (I01) Air conditioning Plus.

5 Install in the reverse order

Fig 1: Identifying Air Recirculation Components Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

TESTING & REPAIR > REMOVE/INSTALL FLEXIBLE SHAFT FOR AIR DISTRIBUTION -

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2419 · Applies to: 450, 451, 452, 454 · AR: AR83.10-P-1401MCC, AR83.10-P-2001MCU

AR83.10-P-1401MCC > MODEL 451.3/4 Shown on heater/AC operating unit with code (I01) Air conditioning Plus Remove/install

1 Remove heater/AC operating unit (N23) With code (I01) A/C Plus up to 30.8.10 AR83.25-P- 1124MCC With code (I01) A/C Plus as of 31.8.10 AR83.25-P- 1124MCF Without code (I01) A/C Plus up to 30.8.10 AR83.20-P- 1850MCC Without code (I01) A/C Plus as of 31.8.10 AR83.20-P- 1850MCF 2 Flexible shaft (1) on operating unit Unclip heater/AC operating unit (N23) and remove

3 Install in the reverse order

TESTING & REPAIR > REMOVE/INSTALL ACTUATOR MOTOR FOR FRESH AND RECIRCULATED AIR FLAPS - AR83.10-P-2001MCU > MODEL 451.3/4 with CODE (I01) Air conditioning Plus Fig 1: Identifying Flexible Shaft And Heater/AC Operating Unit Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Remove/install

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2420 · Applies to: 450, 451, 452, 454 · AR: AR83.10-P-2026MCC

1 Remove top part of instrument panel AR68.10-P- 1020MCU 2 Disconnect electrical connector (1) from air recirculation flap actuator motor (M39)

3 Remove bolts (2) and remove air recirculation flap actuator motor (M39)

4 Install in the reverse order

5 Carry out function test on air recirculation flap actuator motor (M39)

TESTING & REPAIR > REMOVE/INSTALL BLEND AIR FLAP ACTUATOR MOTOR - AR83.10-P-2026MCC > MODEL 451.3/4 with CODE (I01) Air conditioning Plus

Remove/install

1 Move right seat toward rear

Fig 1: Identifying Air Recirculation Flap Actuator Motor, Electrical Connector And Bolts Courtesy of MERCEDES-BENZ OF NORTH AMERICA. Fig 1: Identifying Blend Air Flap Actuator, Electrical Connector And Bolts Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Disconnect electrical connector (1)

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2421 · Applies to: 450, 451, 452, 454 · AR: AR83.10-P-3220MCU

2 Disconnect electrical connector (1) at blend air flap actuator (M16/8)

3 Remove bolts (2) and remove blend air flap actuator (M16/8) Installation: Counterhold driver shaft of blend air flap actuator (M16/8) on the opposite side on air conditioner housing (arrow). 4 Install in the reverse order

5 Carry out function test on blend air flap actuator (M16/8)

TESTING & REPAIR > REMOVE/INSTALL FRESH-AIR INTAKE - AR83.10-P-3220MCU > MODEL 451.3/4 Fig 1: Removing/Installing Fresh-Air Intake Courtesy of MERCEDES-BENZ OF NORTH AMERICA. Fig 2: Identifying Fresh-Air Intake And Gasket Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Remove/install

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2422 · Applies to: 450, 451, 452, 454 · AR: AR83.20-P-1100MCU

1 Remove windshield washer fluid reservoir

AR82.35- P- 6000MCU 2 Release coolant hose (5) from bracket (arrow B) on fresh-air intake (1)

3 Unclip brake fluid reservoir (2) in the area marked (arrow A) using a suitable screwdriver (3) and place to one side

4 Unscrew nuts (4) on fresh-air intake (1)

5 Remove fresh-air intake (1) Installation: Ensure that gasket (6) is properly seated.

6 Install in the reverse order

TESTING & REPAIR > REMOVE/INSTALL HEAT EXCHANGER - AR83.20-P-1100MCU > MODEL 451.3/4 (except 451.391 /491) Removing

1 Drain coolant

AR20.00-P- 1142MCU 2 Remove foot support on passenger side

AR68.30-P- 1340MCC Fig 1: Identifying Heat Exchanger Components Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Remove/install

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2424 · Applies to: 450, 451, 452, 454 · AR: AR83.20-P-1850MCC

1 Remove heater/AC operating unit (N23) Up to 30.8.10 AR83.20- P- 1850MCC As of 31.8.10 AR83.20- P- 1850MCF 2 Press back catch hook (3) and remove eyelet (2) on heater/AC operating unit (N23)

3 Press catch hook (4) together using suitable pliers, slide cable (1) out of bracket on heater/AC operating unit (N23) in direction of arrow and remove

4 Install in the reverse order

TESTING & REPAIR > REMOVE/INSTALL HEATER/VENTILATION OPERATING UNIT - AR83.20-P-1850MCC > MODEL 451.3/4 up to 30.8.10 except CODE (I01) Air conditioning Plus Fig 1: Identifying Heater/AC Operating Unit Components Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Press catch hook (arrows A) together using

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2426 · Applies to: 450, 451, 452, 454 · AR: AR83.20-P-1850MCF

8 Press catch hook (arrows A) together using suitable pliers and press cable (7) out of bracket on heater housing in direction of arrow

9 Release electrical connectors (5) and disconnect from heater/AC operating unit (N23)

10 Remove heater/air conditioning operating unit (N23) Note installation position of flexible shaft (6) and cable (7).

11 Remove cable (7) When the operating unit is replaced Heater/AC (N23). AR83.20- P- 1400MCC 12 Remove flexible shaft (6) When the operating unit is replaced Heater/AC (N23). AR83.10- P- 1401MCC 13 Install in the reverse order

14 Perform function test on heater/air conditioning operating unit (N23)

TESTING & REPAIR > REMOVE/INSTALL HEATER/VENTILATION OPERATING UNIT - AR83.20-P-1850MCF > MODEL 451.3/4 as of 31.8.10 except CODE (I01) Air conditioning Plus Remove/install

Fig 1: Identifying Heater/AC Operating Unit, Screw And Flexible Shaft Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Remove center air vent

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2427 · Applies to: 450, 451, 452, 454 · AR: AR83.25-P-1000MCU

1 Remove center air vent

AR68.10- P- 1150MCF 2 Remove bolts (1)

3 Unhook heater operating unit / A/C (N23) from bracket (arrow) at left and right and remove Note installation position of flexible shaft (2).

4 Remove flexible shaft (2) When the operating unit is replaced Heater/AC (N23). AR83.10- P- 1401MCC 5 Remove heater control cable When the operating unit is replaced Heater/AC (N23).

• not for USA AR83.20- P- 1400MCC
• for USA only AR83.20- P- 1400MCU 6 Install in the reverse order

7 Perform function test on heater/air conditioning operating unit (N23)

TESTING & REPAIR > REMOVE/INSTALL HEATER HOUSING - AR83.25-P-1000MCU > MODEL 451.3/4 except CODE (I01) Air conditioning Plus Fig 1: Identifying Snap Clamp And Coolant Hose Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Remove heater

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2430 · Applies to: 450, 451, 452, 454 · AR: AR83.25-P-1124MCC

12 Remove heater housing (3) from vehicle Make sure that the interior is not contaminated by any escaping coolant, as contaminated parts will have to be cleaned or replaced.

13 Detach fresh air case (11) from the heater housing (3) by turning and remove When replacing the heater housing (3).

14 Detach electrical connector (9), release lock and detach blower motor (M2) by turning it counterclockwise and then remove from the heater housing (3) When replacing the heater housing (3).

15 Detach electrical connector (10) and release series resistor group for blower motor (R14) by turning it clockwise and then remove from the heater housing (3) When replacing the heater housing (3).

16 Expose electrical wiring harness (13) on heater housing (3) and remove When replacing the heater housing (3).

17 Remove bolt (5) and remove cover (8) When replacing the heater housing (3).

18 Pull heat exchanger (12) out of heater housing (3) When replacing the heater housing (3).

19 Install in the reverse order

TESTING & REPAIR > REMOVE AND INSTALL AIR CONDITIONING CONTROL AND OPERATING UNIT - AR83.25-P-1124MCC > MODEL 451.3/4 up to 30.8.10 with CODE (I01) Air conditioning Plus

Remove flexible shaft (3)

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2432 · Applies to: 450, 451, 452, 454 · AR: AR83.25-P-1124MCF

9 Remove flexible shaft (3) When the operating unit is replaced Heater/AC (N23). AR83.10- P- 1401MCC 10 Install in the reverse order

11 Perform function test on heater/air conditioning operating unit (N23)

TESTING & REPAIR > REMOVE AND INSTALL AIR CONDITIONING CONTROL AND OPERATING UNIT - AR83.25-P-1124MCF > MODEL 451.3/4 as of 31.8.10 with CODE (I01) Air conditioning Plus Remove/install

1 Remove center air vent

AR68.10- P- 1150MCF 2 Remove bolts (1)

3 Unhook heater operating unit / A/C (N23) from bracket (arrow) at left and right and remove Note installation position of flexible shaft (2).

4 Remove flexible shaft (2) When the operating unit is replaced Heater/AC (N23). AR83.10- P- 1401MCC 5 Install in the reverse order

Fig 1: Identifying Heater/AC Operating Unit, Screw And Flexible Shaft Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Perform function test on heater/air conditioning

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2433 · Applies to: 450, 451, 452, 454 · AR: AR83.25-P-1200MCU, AR83.25-P-1250MCC

6 Perform function test on heater/air conditioning operating unit (N23)

TESTING & REPAIR > REMOVE AND INSTALL BLOWER MOTOR - AR83.25-P-1200MCU > MODEL 451.3/4 Shown on vehicle with Code (I01) AC Plus

Remove/install 1 Adjust left seat to the rear 2 Detach electrical connector (2) on blower motor (M2) 3 Release lock (1) on blower motor (M2) 4 Detach blower motor (M2) by turning in counterclockwise direction and removing from air conditioning or heater housing 5 Install in the reverse order 6 Perform function test on blower motor (M2) TESTING & REPAIR > REMOVE AND INSTALL SERIES RESISTOR FOR HEATER BLOWER - AR83.25-P-1250MCC > MODEL 451.3/4 Fig 1: Identifying Blower Motor, Electrical Connector And Lock Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Risk of explosion caused by

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2444 · Applies to: 450, 451, 452, 454 · AR: AR83.30-P-5520MCU

welding or soldering work on closed air conditioning system. Risk of poisoning caused by inhaling overheated refrigerant vapors. Risk of injury to skin and eyes caused by contact with liquid refrigerant. Never perform welding work on or near a closed air conditioning system. No smoking or open flames. Wear safety glasses and protective gloves. Work only in well ventilated areas. Carry out repair work on the air conditioning system circuit only after the system has been discharged. AS83.00- Z-0001- 01A Procedure for a damaged or leaky air conditioning system

AH83.30- N-0004- 01A Protect air conditioning circuit and components from moisture when carrying out repair work

AH83.30- N-0005- 01A Notes on handling refrigerant R134a

AH83.30- N-0003- 01A 1 Remove front CBS

AR88.00- P- 1010MCC 2 Discharge air conditioning system Installation: Evacuate air conditioning and then fill. AR83.30- P- 1760MCC 3 Disconnect electrical connector (1) from refrigerant pressure sensor (B12)

4 Remove refrigerant pressure sensor (B12) from refrigerant line (2) Close off refrigerant line (2) using appropriate stop plug, as otherwise penetrating dirt and moisture damage components that are connected to the refrigerant circuit.

*BA83.30- P-1001- 01L 5 Remove filter dryer Always replace the filter drier after opening the refrigerant circuit AR83.30- P- 6525MCC 6 Install in the reverse order

AIR CONDITIONING Number Designation Model 451.3/4 BA83.30-P-1001- 01L Refrigerant pressure sensor to AC line Nm 10 TESTING & REPAIR > REMOVE/INSTALL EXPANSION VALVE - AR83.30-P-5520MCU >

TESTING & REPAIR > REMOVE/INSTALL DEHYDRATOR - AR83.30-P-6525MCC >

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2450 · Applies to: 450, 451, 452, 454 · AR: AR83.30-P-6525MCC

MODEL 451.3/4 with CODE (I01) Air conditioning Plus Fig 2: Identifying Valve Wrench (203 589 03 10 00) Courtesy of MERCEDES-BENZ OF NORTH AMERICA. Fig 1: Identifying Filling Valve, Pressure Line And Suction Pipe Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

benz.com

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2452 · Applies to: 450, 451, 452, 454 · AR: AR83.30-P-6540MCU

3 Carefully push in pin (arrow) on filling valve (1) of intake line (3) and filling valve (1) of pressure line (2) until air conditioning system is completely unpressurized

Risk of death caused by vehicle slipping or toppling off of the lifting platform. Align vehicle between columns of vehicle lift and position four support plates at vehicle lift support points specified by vehicle manufacturer. AS00.00- Z-0010- 01A 4 Raise the vehicle using the vehicle lift and remove underfloor panelings Rechargeable drill / screwdriver http://gotis.aftersales.mercedes- benz.com

5 Carefully pull front CBS (5) forwards and remove screw (6)

6 Screw a suitable screw (9) into the cover (7)

7 Push cover (7) with screw (9) upwards until circlip (8) is relieved

8 Remove circlip (8) and remove cover (7) from below

9 Gently push front module towards the rear and withdraw filter drier (4) from condenser from below

10 Install in the reverse order

TESTING & REPAIR > REMOVE/INSTALL CONDENSER - AR83.30-P-6540MCU > MODEL 451.3/4 with CODE (I01) Air conditioning Plus

Installation: Replace seal rings on

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2454 · Applies to: 450, 451, 452, 454 · AR: AR83.30-P-7810MCU

refrigerant lines (2). 4 Unclip condenser (1) from catch (4), swivel forwards at the left- hand side and remove

5 Remove filter dryer Installation: Always replace the filter drier after opening the refrigerant circuit. AR83.30- P- 6525MCC 6 Install in the reverse order

TESTING & REPAIR > REMOVE/INSTALL REFRIGERANT LINES AT REFRIGERANT COMPRESSOR - AR83.30-P-7810MCU > MODEL 451.3/4 (except 451.391 /491) with CODE (I01) Air conditioning Plus Shown on model 451.3 up to production date 2.6.08 MODIFICATION NOTES 31.3.08 Repair method revised Steps 6 and 8

Remove/install

Risk of explosion caused by welding or soldering work on closed air conditioning system. Risk of poisoning caused by inhaling overheated Never perform welding work on or near a closed air conditioning system. No smoking or open flames. Wear safety glasses and protective gloves. Work AS83.00-Z- 0001-01A Fig 1: Identifying Refrigerant Line Components At Refrigerant Compressor Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

caused by impacts or chafing.

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2456 · Applies to: 450, 451, 452, 454 · AR: AR83.30-P-7811MCU

9 Remove filter dryer Installation: Always replace the filter drier after opening the refrigerant circuit. AR83.30-P- 6525MCC 10 Install in the reverse order

AIR CONDITIONING Number Designation Model 451.3/4 BA83.30-P-1002- 01L Bolt, refrigerant line to refrigerant compressor Nm 20 TESTING & REPAIR > REMOVE/INSTALL REFRIGERANT LINE BETWEEN REFRIGERANT COMPRESSOR AND EVAPORATOR - AR83.30-P-7811MCU > MODEL 451.3## /4## (except 451.391 /491) 1# with CODE (I01) Air conditioning Plus Shown on model 451.4 up to production date 2.6.08 Fig 2: Identifying Cutting Tool Set (452 589 00 33 00) Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

AND CONDENSER - AR83.30-P-7812MCU >

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2461 · Applies to: 450, 451, 452, 454 · AR: AR83.30-P-7812MCU

MODEL 451.3/4 (except 451.391 /491) with CODE (I01) Air conditioning Plus

Remove/install

Risk of explosion caused by welding or soldering work on closed air conditioning system. Risk of poisoning caused by inhaling overheated refrigerant vapors. Risk of injury to skin and eyes caused by contact with liquid refrigerant. Never perform welding work on or near a closed air conditioning system. No smoking or open flames. Wear safety glasses and protective gloves. Work only in well ventilated areas. Carry out repair work on the air conditioning system circuit only after the system has been discharged. AS83.00- Z-0001- 01A Procedure for a damaged or leaky air conditioning system

AH83.30- N-0004- 01A Protect air conditioning circuit and components from moisture when carrying out repair work

AH83.30- N-0005- 01A Notes on handling R134a refrigerant Air conditioning with refrigerant R134a AH83.30- N-0003- 01A 1 Remove front CBS

AR88.00- P- 1010MCC 2 Discharge air conditioning system Installation: Evacuate air conditioning and then fill. AR83.30- P- 1760MCC 3 Disconnect air conditioning service unit Air conditioner service unit gotis://E_83_05.

4 Remove front module

AR62.30- P- Fig 1: Identifying Refrigerant Line, Capacitor, Expansion Valve & Nuts Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

1575MCU

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2462 · Applies to: 450, 451, 452, 454 · AR: AR83.30-P-7813MCU

5 Unscrew nut (6) *BA83.30- P-1004- 01L 6 Pull out refrigerant lines (4, 7) at expansion valve (5) and remove seal rings of refrigerant lines (4, 7) Close off refrigerant lines (4, 7) and expansion valve (5) using appropriate stop plugs, as otherwise penetrating dirt and moisture damage components that are connected to the refrigerant circuit. Installation: Replace sealing rings at refrigerant lines (4, 7) and coat with compressor oil when inserting.

Compressor oils (specification 362.0) Sheet 362.0 BB00.40- P-0362- 00A 7 Unscrew nut (3) from condenser (2), detach refrigerant lines (1, 4) from condenser (2) and remove seal rings of refrigerant lines (1, 4) Close off refrigerant lines (1, 4) and condenser (2) using appropriate stop plugs, as otherwise penetrating dirt and moisture damage components that are connected to the refrigerant circuit. Installation: Replace sealing rings at refrigerant lines (1, 4) and coat with compressor oil when inserting.

Compressor oils (specification 362.0) Sheet 362.0 BB00.40- P-0362- 00A 8 Loosen refrigerant line (7) from guide for refrigerant line (4) and remove refrigerant line (4)

9 Remove filter dryer Installation: Always replace the filter drier after opening the refrigerant circuit. AR83.30- P- 6525MCC 10 Install in the reverse order

AIR CONDITIONING Number Designation Model 451.3/4 BA83.30-P-1004- 01L Nut, refrigerant lines to expansion valve Nm 4 TESTING & REPAIR > REMOVE/INSTALL REFRIGERANT LINE BETWEEN CONDENSER AND REFRIGERANT COMPRESSOR - AR83.30-P-7813MCU > MODEL 451.3## /4## (except 451.391 /491) 1# with CODE (I01) Air conditioning Plus Shown on model 451.4 up to production date 2.6.08

TESTING & REPAIR > REMOVE AND INSTALL EVAPORATOR TEMPERATURE SENSOR -

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2466 · Applies to: 450, 451, 452, 454 · AR: AR83.30-P-8085MCC

AR83.30-P-8085MCC > MODEL 451.3/4 with CODE (I01) Air conditioning Plus Fig 2: Identifying Removal Assembly (450 589 02 62 00) Courtesy of MERCEDES-BENZ OF NORTH AMERICA. Fig 3: Identifying Mount (451 589 01 31 00) Courtesy of MERCEDES-BENZ OF NORTH AMERICA. Fig 4: Identifying Cutting Tool Set (452 589 00 33 00) Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

MODIFICATION NOTES

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2475 · Applies to: 450, 451, 452, 454 · AR: GF83.10-P-2000MCU

Refrigerant filling capacity Model 452.3/4 2.8.07 Refrigerant, filling capacity Model 451.3/4 AIR CONDITIONING SYSTEM Number Designation Model 450.3/4 (up to 02.01.2003) Models 450.3/4 (as of 03.01.2003) Model 451.3/4 except 451.391/491 BF83.30-P- 1001-01C Refrigerants Filling capacity g 590 (+25) 400 (+50) 430 (+0/-20) Specifications for Operating Fluids Sheet - - - AIR CONDITIONING SYSTEM Number Designation Model 451.391/491 Model 452.3/4 Model 454 BF83.30-P- 1001-01C Refrigerants Filling capacity g 550 660 (-25) 430 (±20) Specifications for Operating Fluids Sheet - - - BASIC KNOWLEDGE > VENTILATION SYSTEM, FUNCTION - GF83.10-P-2000MCU > MODEL 451.3/4 The ventilation system prevents the windows from misting up and ensures that there is a uniform, pleasant temperature in the vehicle interior. Fig 1: View Of Ventilation System Function Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Component description for the

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2477 · Applies to: 450, 451, 452, 454 · AR: GF83.10-P-2050MCC

heater/air conditioning operating unit N23Without code (I01) Air conditioning Plus GF83.40-P- 3001MCC For code (I01) Air conditioning Plus GF83.40-P- 3001MCU BASIC KNOWLEDGE > BLOWER, COMPONENT DESCRIPTION - GF83.10-P-2050MCC > MODEL 451.3/4 Location The blower motor is located under the instrument panel at the left on the air conditioner housing. Task The blower motor supplies air to the vehicle interior. The blower motor is actuated via the blower switch (S98/1) integrated into the heater/air conditioning operating unit (N23). BASIC KNOWLEDGE > ACTUATOR MOTORS, COMPONENT DESCRIPTION - GF83.10-P- 2201MCC > MODEL 451.3/4 with CODE (I01) Air conditioning Plus Location The blend air flap actuator and the air recirculation flap actuator motor are located on the right of the air conditioner housing. Task Adjusting the blend air and air recirculation flap depending on the specifications of the heater/AC operating unit (N23). Fig 1: Locating Blower Motor Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Blend air flap actuator

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2478 · Applies to: 450, 451, 452, 454 · AR: GF83.20-P-2003MCU

The blend air flap actuator is used to adjust the ventilation temperature of the vehicle interior. The blend air flap actuator is actuated via the heater/AC operating unit depending on the position of the temperature preselection slider switch and the actual interior temperature according to defined characteristics and moves the blend air flap. The blend air flap opens or closes the air passage in order to achieve the desired interior temperature. The specified flap angle of the blend air flap is determined by the heater/AC operating unit depending on the following information: Specified temperature set on the temperature preselection slider switch Measured interior temperature Temperature measured at the evaporator Coolant temperature The blend air flap actuator reports its position to the heater/AC operating unit via an integrated potentiometer. Recirculated air flap actuator motor The air recirculation flap actuator motor is used to close or open the air recirculation flap. This allows or prevents the fresh air supply from the outside into the air conditioner housing. When the air recirculation switch (N23s3) on the heater/AC operating unit is pressed, the air recirculation flap actuator motor is actuated. In air recirculation mode, air is drawn out of the vehicle interior into the air conditioner housing. BASIC KNOWLEDGE > HEATER CIRCUIT FUNCTION - GF83.20-P-2003MCU > MODEL 451.3/4 Fig 1: View Of Air Recirculation Flap Actuator Motor And Blend Air Flap Actuator Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Function

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2479 · Applies to: 450, 451, 452, 454 · AR: GF83.20-P-3123MCU

The coolant pump pumps cold coolant through the engine. There, the coolant absorbs the engine heat and then flows over the thermostat to the coolant pump (small coolant circuit). If the engine has reached its operating temperature, the thermostat opens the large coolant circuit. This subdivides immediately after the thermostat into the cooling circuit and the heating circuit. In the heating circuit, the coolant flows to the heater heat exchanger via the heating circuit coolant feed pipe. The air flowing through the heater heat exchanger is warmed up in the process and routed into the vehicle interior. Next, the coolant flows from the heater heat exchanger to the expansion reservoir and from there to the cooler or back to the coolant pump via the coolant return line. In the cooling circuit, the coolant flows from the thermostat via the coolant feed pipe for the cooling circuit to the cooler and from there onward to the coolant pump via the coolant return line. Heating system heat exchanger, component description GF83.20-P-3123MCU BASIC KNOWLEDGE > HEATING SYSTEM HEAT EXCHANGER, COMPONENT DESCRIPTION - GF83.20-P-3123MCU > MODEL 451.3/4 Fig 1: Heater Circuit Function Diagram Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

BASIC KNOWLEDGE > AUTOMATIC HEATER (HEAT) FUNCTION - GF83.25-P-0001MCU >

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2481 · Applies to: 450, 451, 452, 454 · AR: GF83.25-P-0001MCU

MODEL 451.3/4 except CODE (I01) Air conditioning Plus Description The automatic heater has a mechanically adjustable heating and ventilation system. By means of the automatic heater, the vehicle interior can be heated or ventilated. It is only possible to cool down the vehicle interior to the temperature of the ambient air. The following functions were realized: Heating circuit Ventilation Control Heating circuit The coolant is heated up by the engine. After this, the heated-up coolant is routed through the heater heat exchanger, where the heat is given off to the air flowing through the heater heat exchanger. The coolant returns back to the coolant pump via the heater return. Ventilation The ventilation system ventilates the interior of the vehicle. The air is drawn in by the blower motor (M2) and passes through the various air ducts to the air distribution flaps which distribute it in the vehicle interior. Control A specified temperature is preset on the temperature preselection slider switch. This setting is transmitted to Fig 1: Locating Automatic Heater Components Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

the blend air flap in the heater housing via a cable. Depending on the position of the temperature

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2482 · Applies to: 450, 451, 452, 454 · AR: GF83.10-P-2000MCU, GF83.20-P-2003MCU, GF83.25-P-2001MCU, GF83.25-P-0999MCU, GF83.25-P-0001MCU (+3 more)

preselection slider switch, the blend air flap distributes the air flow between the heater heat exchanger and the air outlet nozzles in the vehicle interior. Automatic heater (HEAT) component locations GF83.25-P-0001-02MCU Ventilation system, function GF83.10-P-2000MCU Heater circuit function GF83.20-P-2003MCU Automatic heater control function GF83.25-P-2001MCU BASIC KNOWLEDGE > AUTOMATIC HEATER (HEAT) FUNCTION DESCRIPTION CONTENTS - GF83.25-P-0999MCU > MODEL 451.3/4 except CODE (I01) Air conditioning Plus Automatic heater (HEAT) function GF83.25-P-0001MCU Automatic heater (HEAT) component locations GF83.25-P-0001-02MCU Ventilation system, function GF83.10-P-2000MCU Heater circuit function GF83.20-P-2003MCU Automatic heater control function GF83.25-P-2001MCU Overview of automatic heater (HEAT [HAU]) system components GF83.25-P-9998MCU BASIC KNOWLEDGE > AUTOMATIC HEATER CONTROL FUNCTION - GF83.25-P- 2001MCU > MODEL 451.3/4 except CODE (I01) Air conditioning Plus Function The automatic heater is regulated mechanically for the most part. The heater/AC operating unit (N23) is the central operating unit for regulating the heater. The air distribution rotary switch makes it possible to adjust which air outlet nozzles the air is to be routed through into the vehicle interior. The intensity of air heating is adjusted via the temperature preselection slider switch. The heater heat exchanger located in the air flow of the blower delivers the heat of the coolant to the air blowing by. The strength of the air flow is set on the blower switch (S98/1) on the heater/ AC operating unit. The SAM control unit (N10/10) reads in the blower switch and then energizes the blower motor (M2). Heating system heat exchanger, component description

GF83.20-P-3123MCU Blower, component description M2 GF83.10-P- 2050MCC Component description for the SAM control unit N10/10 GF54.21-P-4157MCU Component description for the heater/air conditioning operating unit N23 GF83.40-P- 3001MCC BASIC KNOWLEDGE > OVERVIEW OF AUTOMATIC HEATER (HEAT [HAU]) SYSTEM COMPONENTS - GF83.25-P-9998MCU >

MODEL 451.3/4 except CODE (I01) Air conditioning Plus

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2483 · Applies to: 450, 451, 452, 454 · AR: GF83.20-P-3123MCU, GF54.21-P-4157MCU, GF83.25-P-0999MCU

Heating system heat exchanger, component description

GF83.20-P-3123MCU Blower, component description M2 GF83.10-P- 2050MCC Component description for the SAM control unit N10/10 GF54.21-P-4157MCU Component description for the heater/air conditioning operating unit N23 GF83.40-P- 3001MCC Automatic heater (HEAT) function description contents

GF83.25-P-0999MCU BASIC KNOWLEDGE > AUTOMATIC AIR CONDITIONING (AAC) COMPONENT LOCATIONS - GF83.40-P-0001-01MCU > BASIC KNOWLEDGE > AUTOMATIC AIR CONDITIONING (AAC), FUNCTION - GF83.40-P- 0001MCU > MODEL 451.3/4 with CODE (I01) Air conditioning Plus The automatic air conditioning has an electronically controlled cooling and heating system. It controls the temperature of the vehicle interior. Even at low outside temperatures, the air is first cooled down by the evaporator and dehumidified, it is then routed through the heat exchanger where it is heated up to the desired interior temperature. Fig 1: Locating Automatic Air Conditioning Components Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

The following functions are implemented

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2484 · Applies to: 450, 451, 452, 454 · AR: PE83.30-P-2050MCU

Ventilation Heating circuit Refrigerant circuit Safety shutoff Ventilation The ventilation system ventilates the interior of the vehicle. The air is drawn in by the blower motor (M2) and passes through the various air ducts to the air distribution flaps, which distribute it in the vehicle interior. Heating circuit The coolant is heated up by the engine. The heated coolant is subsequently guided through the heat exchanger, where the heat is emitted into the air in the interior. The coolant returns back to the coolant pump via the coolant return line. Refrigerant circuit The refrigerant compressor (A9) driven by the engine compresses the refrigerant vapor which is cooled down in the condenser. The refrigerant liquefies during cooling. The refrigerant flows into the evaporator via the expansion valve and is heated there indirectly by the warm air blowing by on the outside of the evaporator. The refrigerant compressor aspirates the refrigerant which has turned gaseous on account of the heat absorption and then compresses it yet again. Safety shutoff To prevent damages to the refrigerant compressor, the following automatically shutoffs are integrated: Hot gas shutoff (through integrated sensor in refrigerant compressor) High-pressure shutoff in the system (through refrigerant pressure sensor (B12)) Low-pressure shutoff in the event of missing refrigerant (through refrigerant pressure sensor) Overtemperature deactivation (coolant temperature above 115°C) Undertemperature shutoff (if temperature on evaporator is below 3°C) At outside temperatures below 3°C, the refrigerant compressor cannot be activated.

Automatic air conditioning (AAC) component locations GF83.40-P-0001-01MCU Electrical function diagram for air conditioning PE83.30-P-2050MCU

Wiring diagram of air conditioning

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2485 · Applies to: 450, 451, 452, 454 · AR: PE83.30-P-2000MCU, GF83.10-P-2000MCU, GF83.40-P-2001MCC, GF83.20-P-2003MCU, GF83.40-P-2004MCU (+4 more)

PE83.30-P-2000MCU

Ventilation system, function GF83.10-P-2000MCU

Refrigeration cycle function GF83.40-P-2001MCC

Heater circuit function GF83.20-P-2003MCU

Regulation of Automatic air conditioning, function GF83.40-P-2004MCU BASIC KNOWLEDGE > TABLE OF CONTENTS, AUTOMATIC AIR CONDITIONING (AAC) FUNCTION DESCRIPTION - GF83.40-P-0999MCU > MODEL 451.3/4 with CODE (I01) Air conditioning Plus

Automatic air conditioning (AAC), function GF83.40-P-0001MCU

Automatic air conditioning (AAC) component locations GF83.40-P-0001-01MCU Electrical function diagram for air conditioning PE83.30-P-2050MCU Wiring diagram of air conditioning PE83.30-P-2000MCU

Ventilation system, function GF83.10-P-2000MCU

Refrigeration cycle function GF83.40-P-2001MCC

Heater circuit function GF83.20-P-2003MCU

Regulation of Automatic air conditioning, function GF83.40-P-2004MCU

Survey of automatic air conditioning (AAC), system components GF83.40-P-9992MCU BASIC KNOWLEDGE > REFRIGERATION CYCLE FUNCTION - GF83.40-P-2001MCC > MODEL 451.3/4 with CODE (I01) Air conditioning Plus Function Fig 1: Refrigeration Cycle Function Diagram Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

The refrigerant compressor driven by the engine aspirates the gaseous refrigerant from the evaporator,

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2486 · Applies to: 450, 451, 452, 454 · AR: GF83.40-P-2190MCC, GF83.40-P-2188MCC, GF83.40-P-2189MCC, GF83.55-P-2108MCC, GF83.55-P-2108MCU (+4 more)

compresses it, and pushes it into the high-pressure circuit to the condenser as a hot gas. The refrigerant gives off the compression heat through the surface of the condenser and liquefies in the process. When it flows through the desiccant cartridge integrated in the condenser, the refrigerant is dehydrated and cleaned of chemical and mechanical impurities. The expansion valve sprays the liquid refrigerant into the refrigerant line leading to the evaporator. In the process, the refrigerant pressure drops, whereby the aggregate state of the refrigerant starts to change from liquid to gaseous. The refrigerant flows through the evaporator. While doing so, thermal energy is supplied to the refrigerant through the air blowing by the outside of the evaporator, which is needed by the refrigerant in order to be able to evaporate completely. At the same time, the air blowing by is cooled down, dried, and routed into the vehicle interior. The condensation water developing while the air is cooling down is routed to the outside. The refrigerant compressor aspirates the refrigerant which has turned gaseous on account of the heat absorption and then compresses it yet again. Expansion valve, component description

GF83.40-P-2190MCC Condenser, component description

GF83.40-P-2188MCC Evaporator, component description

GF83.40-P-2189MCC Component description of refrigerant compressor A9* not for USA GF83.55-P-2108MCC * for USA only GF83.55-P-2108MCU Evaporator temperature sensor, component description B10/6 GF83.57-P-2126MCC Refrigerant pressure sensor, component description B12 GF83.40-P-2193MCC Blower, component description M2 GF83.10-P-2050MCC BASIC KNOWLEDGE > REGULATION OF AUTOMATIC AIR CONDITIONING, FUNCTION - GF83.40-P-2004MCU > MODEL 451.3/4 with CODE (I01) Air conditioning Plus

Location

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2490 · Applies to: 450, 451, 452, 454 · AR: GF83.40-P-2193MCC

The expansion valve is located in the front module, immediately behind the cooler. Task The expansion valve separates the refrigerant circuit's high-pressure area from the low-pressure area. Function When the refrigerant compressor (A9) is switched on, the pressure in the evaporator decreases causing a diaphragm in the expansion valve to arch. The diaphragm motion is transferred to a linkage. The linkage presses the valve ball out of its seat opening the valve. The opened valve enables the refrigerant to be sprayed into the evaporator. BASIC KNOWLEDGE > REFRIGERANT PRESSURE SENSOR, COMPONENT DESCRIPTION - GF83.40-P-2193MCC > MODEL 451.3/4 with CODE (I01) Air conditioning Plus Location The refrigerant pressure sensor is located at the left behind the condenser on the pressure line of the refrigerant circuit. Task Fig 1: Locating Expansion Valve Courtesy of MERCEDES-BENZ OF NORTH AMERICA. Fig 1: Locating Refrigerant Pressure Sensor Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

The refrigerant pressure sensor is used for measuring the refrigerant pressure.

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2491 · Applies to: 450, 451, 452, 454 · AR: GF83.40-P-3001MCC

The value determined by the refrigerant pressure sensor is directly read in by the heater/air conditioning operating unit (N23). BASIC KNOWLEDGE > HEATER/AIR CONDITIONING OPERATING UNIT, COMPONENT DESCRIPTION - GF83.40-P-3001MCC > MODEL 451.3/4 except CODE (I01) Air conditioning Plus Location The heater/AC operating unit is located in the center console. The heater/AC operating unit permits the following operations: Interior temperature selection cold/warm Manual blower control Manual air distribution Rear window heater Design The heater/AC operating unit contains the following controls and displays: Temperature preselection slider switch Air distribution rotary switch Blower switch Fig 1: Identifying Heater/Air Conditioning Operating Unit Components Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Heated rear window switch

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2492 · Applies to: 450, 451, 452, 454 · AR: GF83.40-P-3001MCU

Temperature preselection slider switch The intensity of air heating is selected via the slider switch. A cable is used to operate the blend air flap, which routes the air flow corresponding to the position of the slider switch over the heater heat exchanger or directly to the air outlet nozzles in the vehicle interior. Air distribution rotary switch The air outlet nozzles are selected via the air distribution rotary switch. For this purpose, 12 positions of the air distribution rotary switch are available, which are arranged in the following 3 main directions. Windshield Footwell Passenger compartment Blower switch The 3-stage blower switch is used to define the intensity of the air the blower motor (M2) delivers into the vehicle interior. Rear windshield heater The heater/AC operating unit transmits, after the heated rear window switch is pressed, a switch-on request to the SAM control unit (N10/10), which energizes the heated rear window (R1). Simultaneously, the function LED in the heated rear window switch is switched on. If the heated rear window switch is pressed again, the actuation of the heated rear window is terminated. BASIC KNOWLEDGE > COMPONENT DESCRIPTION FOR THE HEATER/AIR CONDITIONING OPERATING UNIT - GF83.40-P-3001MCU > MODEL 451.3/4 with CODE (I01) Air conditioning Plus Location Fig 1: Identifying Heater/Air Conditioning Operating Unit Components Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Air recirculation switch

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2494 · Applies to: 450, 451, 452, 454 · AR: GF83.40-P-9992MCU

Blower switch Heated rear window switch Air distribution rotary switch The air distribution rotary switch is used to adjust which air outlet nozzles the air supplied by the blower motor (M2) is routed through into the interior. For this purpose, 12 positions of the air distribution rotary switch are available, which are arranged in the following 3 main directions. Defrost windshield Footwell Passenger compartment If the air distribution rotary switch is turned to "Defrost windshield", the automatic air conditioning is switched on automatically without this being indicated by the light-emitting diode in the air conditioning switch. As long as the air distribution rotary switch is in this position, the automatic climate control cannot be switched off. The set temperature does not have any influence on this function. Temperature preselection slider switch The temperature preselection slider switch is used to determine, how much the air delivered by the blower motor is warmed up. The temperature preselection slider switch is read in by the heater/air conditioner operating unit, which actuates the blend air flap via the blend air flap actuator. Air conditioning switch The air conditioning switch is used to switch the automatic air conditioning on or off. At outside temperatures below 3°C, the refrigerant compressor cannot be activated. Air recirculation switch When the air recirculation switch is operated, the heater/AC operating unit actuates the air recirculation flap actuator motor in order to close the air recirculation flap. When the air recirculation flap is closed, air supply from the outside is prevented. The LED in the air recirculation switch lights up during operation. Blower switch The 4-stage blower switch is used to define the intensity of the air the blower motor delivers into the vehicle interior. Heated rear window switch The heater/AC operating unit transmits, after the heated rear window switch is pressed, a switch-on request to the SAM control unit, which energizes the heated rear window (R1). Simultaneously, the LED in the rear window heater switch is switched on. If the heated rear window switch is pressed again, the actuation of the heated rear window is terminated. BASIC KNOWLEDGE > SURVEY OF AUTOMATIC AIR CONDITIONING (AAC), SYSTEM COMPONENTS - GF83.40-P-9992MCU > MODEL 451.3/4 with CODE (I01) Air conditioning Plus

Expansion valve, component description

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2495 · Applies to: 450, 451, 452, 454 · AR: GF83.40-P-2190MCC, GF83.40-P-2188MCC, GF83.40-P-2189MCC, GF83.20-P-3123MCU, GF54.30-P-6000MCU (+5 more)

GF83.40-P-2190MCC Condenser, component description

GF83.40-P-2188MCC Evaporator, component description

GF83.40-P-2189MCC Heating system heat exchanger, component description

GF83.20-P-3123MCU Instrument cluster, component description A1 GF54.30-P-6000MCU Component description of refrigerant compressor A9 GF83.55-P-2108MCU Evaporator temperature sensor, component description B10/6 GF83.57-P-2126MCC Coolant temperature sensor, component description B11/4 GF07.04-P-6040MCC Refrigerant pressure sensor, component description B12 GF83.40-P-2193MCC Outside air temperature sender component description B14 GF83.57-P-4000MCC Blower, component description M2 GF83.10-P-2050MCC Actuator motors, component description M16/8, M39 GF83.10-P-2201MCC ME-SFI [ME] control unit, component description N3/10 GF07.61-P-6000MCU Component description for the SAM control unit N10/10 GF54.21-P-4157MCU Component description for the heater/air conditioning operating unit N23 GF83.40-P-3001MCU Table of contents, automatic air conditioning (AAC) function description

GF83.40-P-0999MCU BASIC KNOWLEDGE > COMPONENT DESCRIPTION OF REFRIGERANT COMPRESSOR - GF83.55-P-2108MCU > ENGINE 132.9 in MODEL 451.3/4 with CODE (I01) Air conditioning Plus

Location

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2496 · Applies to: 450, 451, 452, 454 · AR: GF83.57-P-4000MCC

The refrigerant compressor is installed to the right at the engine and is driven via a poly-V belt. Task The refrigerant compressor is responsible for induction and compression of the refrigerant. The refrigerant compressor is switched on and off by the SAM control unit (N10/10) through the actuation of the magnetic clutch installed at the refrigerant compressor. BASIC KNOWLEDGE > OUTSIDE AIR TEMPERATURE SENSOR, COMPONENT DESCRIPTION - GF83.57-P-4000MCC > MODEL 451.3/4 Location The temperature sensor is located at the left below the front crossmember. Fig 1: Locating Refrigerant Compressor Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Task

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2497 · Applies to: 450, 451, 452, 454 · AR: PE83.00-P-1100MCU, PE83.30-P-2000MCU, PE83.30-P-2000MEV, PE83.30-P-2050MCU, PE83.55-P-2001MEV

The temperature sensor records the temperature of the outside air and forwards this information as an electrical signal to the instrument cluster (A1). Function The temperature sensor changes its resistance depending on the outside air temperature. WIRING DIAGRAMS > OVERVIEW OF WIRING DIAGRAMS FOR CLIMATE CONTROL - PE83.00-P-1100MCU > MODEL 451 Wiring diagram of air conditioning Model 451 except 451.391 /491 PE83.30-P-2000MCU Wiring diagram of air conditioning Model 451.391/ 491 PE83.30-P-2000MEV Electrical function schematic for air conditioning Model 451 PE83.30-P-2050MCU Wiring diagram for electric refrigerant compressor control unit Engine 780.009 in model 451.391 /491 PE83.55-P-2001MEV WIRING DIAGRAMS > WIRING DIAGRAM OF AIR CONDITIONING - PE83.30-P-2000-97MCU

Document number: Document title: Code: Designation: Position: A1 Kombiinstrument 18L A9 Kaltemittelverdichter 13L B10/6 Temperaturfuhler Verdampfer 29L B12 Geber Kaltemitteldruck 24L B14 Temperaturfuhler AuBentemperaturanzeige 15L Fig 1: Locating Outside Temperature Display Temperature Sensor Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

WIRING DIAGRAMS > WIRING DIAGRAM OF AIR CONDITIONING - PE83.30-P-2000MCU >

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2500 · Applies to: 450, 451, 452, 454 · AR: PE83.30-P-2000MCU, OV00.01-P-1901MCU, GF00.19-P-1000MCU, GF00.19-P-2000MCU, GF00.19-P-3000MCU

MODEL 451 / (except 451.391 /491) Wiring diagram of air conditioning PE83.30-P-2000-97MCU Use of wiring diagrams OV00.01-P-1901-03MCC Search aid for all wiring diagram groups OV00.01-P-1901MCU Abbreviations for wiring diagrams OV00.01-P-1001-27MC Abbreviations of signal and circuit designations for wiring diagrams OV00.01-P-1001-28MC Location and assignment of line and connectors GF00.19-P-1000MCU Location and assignment of ground points GF00.19-P-2000MCU Location and assignment of Z connector sleeves (line connectors in GF00.19-P-3000MCU Fig 2: Air Conditioning - Wiring Diagram (2 Of 2) Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

WIRING DIAGRAMS > ELECTRICAL FUNCTION DIAGRAM FOR AIR CONDITIONING -

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2503 · Applies to: 450, 451, 452, 454 · AR: PE83.30-P-2050MCU, OV00.01-P-1901MCU, GF00.19-P-1000MCU, GF00.19-P-2000MCU, GF00.19-P-3000MCU (+3 more)

PE83.30-P-2050MCU > MODEL 451 Electrical function diagram for air conditioning PE83.30-P-2050-99MCU Legend of electrical function diagram for air conditioning PE83.30-P-2050-60MCU Use of wiring diagrams OV00.01-P-1901-03MCC Search aid for all wiring diagram groups OV00.01-P-1901MCU Abbreviations for wiring diagrams OV00.01-P-1001-27MC Abbreviations of signal and circuit designations for wiring diagrams OV00.01-P-1001-28MC Location and assignment of line and connectors GF00.19-P-1000MCU Location and assignment of ground points GF00.19-P-2000MCU Location and assignment of Z connector sleeves (line connectors in wiring harness) GF00.19-P-3000MCU Further wiring diagrams PE07.00-P-1100MCU Further wiring diagrams PE54.00-P-1100MCU Further wiring diagrams PE83.00-P-1100MCU SPECIAL TOOLS > 452 589 00 33 00 CUTTING TOOL SET - WS83.00-P-0052B > FG 83/Set B Fig 2: Air Conditioning - Electrical Function Diagram (2 Of 2) Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Always store all spare components in a dry, sealed-off area. Do not remove stop plugs in new components

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2508 · Applies to: 450, 451, 452, 454 · AR: AP83.00-P-8384MCC

until just before they are installed. Use special care when handling the fluid reservoir with its integral desiccant. When a fluid reservoir is left open, the drier element quickly becomes saturated with moisture, rendering it useless. Check drier element packaging for damage. Dispose of drier elements with damaged packaging. Install the drier element no later than 20 minutes after opening the packaging. Further protection against moisture is provided by carefully evacuating the air conditioning system following repair operations. By generating vacuum in the system, the evacuation process removes any moisture that might have penetrated into the system. MAINTENANCE > REPLACE COMBINATION FILTER - AP83.00-P-8384MCC > MODEL 451.3 /4 with CODE (I01) Air conditioning Plus MODIFICATION NOTES 14.6.07 Operation step: Remove driver- side footrest, added Step 2 Remove/install

1 Adjust left seat to the rear

2 Remove foot support on passenger side On vehicles with code (RHD) right-hand drive vehicle AR68.30- P- 1340MCC 3 Unscrew bolts (2) on cover (1) Only if the bolts (2) are fitted.

Unclip bracket (arrows) on If the brackets (arrows) on the cover (1) are damaged, then cover (1) is fastened with bolts (2). Installation: Pay Fig 1: Identifying Combination Filter With Cover And Screw Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

cover (1) and

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2509 · Applies to: 450, 451, 452, 454 · AR: AR83.00-Z-9132CB, AR83.55-P-5300MCC, AR83.55-P-5300MCU, AR83.00-Z-9451CA, AR83.10-P-0100MCC (+5 more)

4 cover (1) and remove cover (1) attention to the correct retention of the bracket (arrows) on the cover (1). If necessary fasten cover (1) with bolts (2).

5 Remove combination filter (3) from the air conditioner housing Installation: Observe installation position of combination filter (3). Replace combination filter (3).

6 Install in the reverse order

TESTING & REPAIR > 1 tips Tip: SMART FORTWO- Blower Inop or Intermitent TESTING & REPAIR > TESTING AND REPAIR WORK: SMART: CLIMATE CONTROL - AR83.00-Z-9132CB > ENGINE 132 Remove/install refrigerant compressor ENGINE 132.9 in MODEL 451.3 /4 with CODE (I01) Air conditioning Plus AR83.55-P-5300MCC Remove/install refrigerant compressor ENGINE 132.910 in MODEL 451.3 /4 with CODE (I01) Air conditioning Plus AR83.55-P-5300MCU TESTING & REPAIR > TESTING AND REPAIR WORK: SMART: CLIMATE CONTROL - AR83.00-Z-9451CA > MODEL 451 Air recirculation unit, remove/install MODEL 451.3 /4 AR83.10-P-0100MCC Air recirculation unit, remove/install MODEL 451.3 /4 AR83.10-P-0100MCU Check air conditioning system for leakage MODEL 450, 451, 452, 454... AR83.30-P-1761MCC Check air conditioning system for leakage MODEL 450, 451, 452, 454... AR83.30-P-1761MCE Cleaning the evaporator MODEL 451.3 /4 with CODE (I01) Air conditioning Plus AR83.30-P-5555MCC Connect diagnostic tool to auxiliary heater (water heater) MODEL 451... AR83.70-P-0017MCC Drain, evacuate and refill air conditioning, check function and check for leaks MODEL 451.3 /4 with CODE (I01) Air conditioning Plus AR83.30-P-1760MCC

Function test for Thermotop E

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2510 · Applies to: 450, 451, 452, 454 · AR: AR83.70-P-2028MCC, AR83.70-P-0009MCC, AR83.30-P-1011MCC, AR83.30-P-1011MCU, AR83.30-P-1011MEV (+5 more)

auxiliary heater MODEL 451... AR83.70-P-2028MCC Override fault interlock for auxiliary heater Thermotop E (water heater) MODEL 451... AR83.70-P-0009MCC Perform air conditioning system leak test MODEL 451.3 /4 (except 451.391 /491) with CODE (I01) Air conditioning Plus AR83.30-P-1011MCC Perform air conditioning system leak test MODEL 451.3 /4 (except 451.391 /491) with CODE (I01) Air conditioning Plus AR83.30-P-1011MCU Perform air conditioning system leak test MODEL 451.391/ 491 AR83.30-P-1011MEV Perform new teach-in for Telestart transmitter MODEL 451.391/ 491 AR83.70-P-0012MEV Remove and install air conditioning control and operating unit MODEL 451.3 /4 up to 30.8.10 with CODE (I01) Air conditioning Plus AR83.25-P-1124MCC Remove and install air conditioning control and operating unit MODEL 451.3 /4 as of 31.8.10 with CODE (I01) Air conditioning Plus AR83.25-P-1124MCF Remove and install blower motor MODEL 451.3 /4 AR83.25-P-1200MCC Remove and install blower motor MODEL 451.3 /4 AR83.25-P-1200MCU Remove and install evaporator temperature sensor MODEL 451.3 /4 with CODE (I01) Air conditioning Plus AR83.30-P-8085MCC Remove and install series resistor for heater blower MODEL 451.3 /4 AR83.25-P-1250MCC Remove and install Telestart receiver MODEL 451.391/ 491 AR83.70-P-0003MEV Remove and install timer switch MODEL 451... AR83.70-P-5892MCC Remove/install actuator motor for fresh and recirculated air flaps MODEL 451.3 /4 with CODE (I01) Air conditioning Plus AR83.10-P-2001MCC Remove/install actuator motor for fresh and recirculated air flaps MODEL 451.3 /4 with CODE (I01) Air conditioning Plus AR83.10-P-2001MCU Remove/install air conditioner housing MODEL 451.3## /4## (except 451.391 /491) 1# with CODE (I01) Air conditioning Plus AR83.30-P-5200MCC Remove/install air conditioner housing MODEL 451.3## /4## 2# with CODE (I01) Air conditioning AR83.30-P-5200MCE

Remove/install air conditioner

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2511 · Applies to: 450, 451, 452, 454 · AR: AR83.30-P-5200MCU, AR83.30-P-5200MEV, AR83.30-P-8088MCV, AR83.10-P-2026MCC, AR83.30-P-6540MCC (+5 more)

Plu Remove/install air conditioner housing MODEL 451.3 /4 with CODE (I01) Air conditioning Plus AR83.30-P-5200MCU Remove/install air conditioner housing MODEL 451.391/ 491 AR83.30-P-5200MEV Remove/install air conditioner housing temperature sensor MODEL 451.391/ 491 AR83.30-P-8088MCV Remove/install blend air flap actuator motor MODEL 451.3 /4 with CODE (I01) Air conditioning Plus AR83.10-P-2026MCC Remove/install condenser MODEL 451.3 /4 with CODE (I01) Air conditioning Plus AR83.30-P-6540MCC Remove/install condenser MODEL 451.3 /4 with CODE (I01) Air conditioning Plus AR83.30-P-6540MCU Remove/install condenser filling valve MODEL 451.3 /4 with CODE (I01) Air conditioning Plus AR83.30-P-5536MCC Remove/install coolant circulation pump MODEL 451... AR83.70-P-5700MCC Remove/install dehydrator MODEL 451.3 /4 with CODE (I01) Air conditioning Plus AR83.30-P-6525MCC Remove/install expansion valve MODEL 451.3 /4 (except 451.391 /491) with CODE (I01) Air conditioning Plus AR83.30-P-5520MCC Remove/install expansion valve MODEL 451.3 /4 (except 451.391 /491) with CODE (I01) Air conditioning Plus AR83.30-P-5520MCU Remove/install flexible shaft for air distribution MODEL 451.3 /4 AR83.10-P-1401MCC Remove/install fresh-air intake MODEL 451.3 /4 AR83.10-P-3220MCC Remove/install fresh-air intake MODEL 451.3 /4 AR83.10-P-3220MCU Remove/install front intake-side refrigerant line MODEL 451.391/ 491 AR83.50-P-6925MEV Remove/install front thrust-side refrigerant line MODEL 451.391/ 491 AR83.50-P-6825MEV Remove/install fuel metering pump MODEL 451... AR83.70-P-5652MCC Remove/install heat exchanger MODEL 451.3## /4## (except 451.391 /491) 1# AR83.20-P-1100MCC Remove/install heat exchanger MODEL 451.3## /4## 2# with CODE (RHD) Right-hand drive vehicle AR83.20-P-1100MCE Remove/install heat exchanger MODEL 451.3 /4 (except AR83.20-P-1100MCU

Remove/install heater control

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2512 · Applies to: 450, 451, 452, 454 · AR: AR83.20-P-1400MCC, AR83.20-P-1400MCU, AR83.25-P-1000MCC, AR83.25-P-1000MCU, AR83.70-P-5302MCC (+5 more)

451 391 /491) Remove/install heater control cable MODEL 451.3 /4 except CODE (I01) Air conditioning Plus AR83.20-P-1400MCC Remove/install heater control cable MODEL 451.3 /4 except CODE (I01) Air conditioning Plus AR83.20-P-1400MCU Remove/install heater housing MODEL 451.3 /4 (except 451.391 /491) except CODE (I01) Air conditioning Plus AR83.25-P-1000MCC Remove/install heater housing MODEL 451.3 /4 except CODE (I01) Air conditioning Plus AR83.25-P-1000MCU Remove/install heater unit MODEL 451... AR83.70-P-5302MCC Remove/install heater/ventilation operating unit MODEL 451.3 /4 up to 30.8.10 except CODE (I01) Air conditioning Plus AR83.20-P-1850MCC Remove/install heater/ventilation operating unit MODEL 451.3 /4 as of 31.8.10 except CODE (I01) Air conditioning Plus AR83.20-P-1850MCF Remove/install high-voltage PTC heater MODEL 451.391/ 491 AR83.70-P-8001MEV Remove/install intake manifold filling valve MODEL 451.3 /4 with CODE (I01) Air conditioning Plus AR83.30-P-5535MCC Remove/install PTC heater booster MODEL 451.3 /4 with ENGINE 660.9 AR83.70-P-8000MCC Remove/install refrigerant line between condenser and expansion valves MODEL 451.391/ 491 AR83.30-P-7817MEV Remove/install refrigerant line between condenser and refrigerant compressor MODEL 451.3## /4## (except 451.391 /491) 1# with CODE (I01) Air conditioning Plus AR83.30-P-7813MCC Remove/install refrigerant line between condenser and refrigerant compressor MODEL 451.3## /4## 2# with CODE (I01) Air conditioning Plus with CODE (RHD) Right- hand drive vehicle AR83.30-P-7813MCE Remove/install refrigerant line between condenser and refrigerant compressor MODEL 451.3## /4## (except 451.391 /491) 1# with CODE (I01) Air conditioning Plus AR83.30-P-7813MCU Remove/install refrigerant line between evaporator and condenser MODEL 451.3 /4 (except 451.391 /491) with CODE (I01) Air conditioning Plus AR83.30-P-7812MCC Remove/install refrigerant line between evaporator and condenser MODEL 451.3 /4 (except 451.391 /491) with CODE (I01) Air conditioning Plus AR83.30-P-7812MCU Remove/install refrigerant line MODEL 451.3## /4## (except AR83.30-P-7811MCC

between refrigerant compre

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2513 · Applies to: 450, 451, 452, 454 · AR: AR83.30-P-7811MCE, AR83.30-P-7811MCU, AR83.30-P-7810MCC, AR83.30-P-7810MCU, AR83.30-P-7810MEV (+2 more)

or and evaporator 451 391 /491) 1# with CODE (I01) Air conditioning Plus Remove/install refrigerant line between refrigerant compressor and evaporator MODEL 451.3## /4## (except 451.391 /491) 2# with CODE (I01) Air conditioning Plus AR83.30-P-7811MCE Remove/install refrigerant line between refrigerant compressor and evaporator MODEL 451.3## /4## (except 451.391 /491) 1# with CODE (I01) Air conditioning Plus AR83.30-P-7811MCU Remove/install refrigerant lines at refrigerant compressor MODEL 451.3 /4 (except 451.391 /491) with CODE (I01) Air conditioning Plus AR83.30-P-7810MCC Remove/install refrigerant lines at refrigerant compressor MODEL 451.3 /4 (except 451.391 /491) with CODE (I01) Air conditioning Plus AR83.30-P-7810MCU Remove/install refrigerant lines at refrigerant compressor MODEL 451.391 /491 with ENGINE 780.009 AR83.30-P-7810MEV Remove/install refrigerant pressure sensor MODEL 451.3 /4 with CODE (I01) Air conditioning Plus AR83.30-P-5430MCC Remove/install Telestart antenna MODEL 451.391/ 491 AR83.70-P-0006MEV TESTING & REPAIR > AIR RECIRCULATION UNIT, REMOVE/INSTALL - AR83.10-P- 0100MCU > MODEL 451.3 /4 Remove/install

AR83.30- Fig 1: Identifying Air Recirculation Unit Components Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Remove heater/air conditioner housing

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2514 · Applies to: 450, 451, 452, 454 · AR: AR83.10-P-1401MCC

1 Remove heater/air conditioner housing (3) Model 451 (except 451.391/491) with code (I01) Air conditioning Plus P- 5200MCU Model 451 (except 451.391/491) without code (I01) Air conditioning Plus AR83.25- P- 1000MCU Model 451.391/491 AR83.30- P- 5200MEV 2 Disconnect electrical connector (2) from air recirculation flap actuator motor (M39) On vehicles with code (I01) Air conditioning Plus

3 Release air recirculation unit (1) from heater/ air conditioner housing (3) by twisting and remove Installation: Ensure that the seal (4) is correctly located.

4 Remove air recirculation flap actuator motor (M39) from air recirculation unit (1) When replacing the air recirculation unit (1) in vehicles with code (I01) Air conditioning Plus.

5 Install in the reverse order

TESTING & REPAIR > REMOVE/INSTALL FLEXIBLE SHAFT FOR AIR DISTRIBUTION - AR83.10-P-1401MCC > MODEL 451.3 /4 Shown on heater/AC operating unit with code (I01) Air conditioning Plus Remove/install

1 Remove heater/AC operating unit (N23) With code (I01) A/C Plus up to 30.8.10 AR83.25-P- 1124MCC With code (I01) A/C Plus as of 31.8.10 AR83.25-P- 1124MCF Without code (I01) A/C AR83.20-P- Fig 1: Identifying Flexible Shaft And Heater/AC Operating Unit Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Plus up to 30.8.10

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2515 · Applies to: 450, 451, 452, 454 · AR: AR83.10-P-2001MCU, AR83.10-P-2026MCC

1850MCC Without code (I01) A/C Plus as of 31.8.10 AR83.20-P- 1850MCF 2 Flexible shaft (1) on operating unit Unclip heater/AC operating unit (N23) and remove

3 Install in the reverse order

TESTING & REPAIR > REMOVE/INSTALL ACTUATOR MOTOR FOR FRESH AND RECIRCULATED AIR FLAPS - AR83.10-P-2001MCU > MODEL 451.3 /4 with CODE (I01) Air conditioning Plus Remove/install

1 Remove top part of instrument panel

AR68.10-P- 1020MCU 2 Disconnect electrical connector (1) from air recirculation flap actuator motor (M39)

3 Remove bolts (2) and remove air recirculation flap actuator motor (M39)

4 Install in the reverse order

5 Carry out function test on air recirculation flap actuator motor (M39)

TESTING & REPAIR > REMOVE/INSTALL BLEND AIR FLAP ACTUATOR MOTOR - AR83.10-P-2026MCC > MODEL 451.3 /4 with CODE (I01) Air conditioning Plus Fig 1: Identifying Air Recirculation Flap Actuator Motor, Electrical Connector And Bolts Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Remove/install

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2516 · Applies to: 450, 451, 452, 454 · AR: AR83.10-P-3220MCU

1 Move right seat toward rear

2 Disconnect electrical connector (1) at blend air flap actuator (M16/8)

3 Remove bolts (2) and remove blend air flap actuator (M16/8) Installation: Counterhold driver shaft of blend air flap actuator (M16/8) on the opposite side on air conditioner housing (arrow). 4 Install in the reverse order

5 Carry out function test on blend air flap actuator (M16/8)

TESTING & REPAIR > REMOVE/INSTALL FRESH-AIR INTAKE - AR83.10-P-3220MCU > MODEL 451.3 /4 Fig 1: Identifying Blend Air Flap Actuator, Electrical Connector And Bolts Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Remove fresh-air intake (1)

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2518 · Applies to: 450, 451, 452, 454 · AR: AR83.20-P-1100MCU

5 Remove fresh-air intake (1) Installation: Ensure that gasket (6) is properly seated.

6 Install in the reverse order

TESTING & REPAIR > REMOVE/INSTALL HEAT EXCHANGER - AR83.20-P-1100MCU > MODEL 451.3 /4 (except 451.391 /491) Removing

1 Drain coolant

AR20.00- P- 1142MCU 2 Remove foot support on passenger side

AR68.30- P- 1340MCC 3 Remove bolt (2) and remove cover (1)

4 Use rag (7) to protect battery and battery recess against escaping coolant

5 Release clamps (4) at coolant lines (3) and detach

6 Pull coolant lines (3) out of heater heat exchanger (5) Make sure that coolant does not run over the battery or into the battery recess, as this may damage the on-board electrical system,

Fig 1: Identifying Heat Exchanger Components Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Remove heater/AC operating unit (N23)

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2520 · Applies to: 450, 451, 452, 454 · AR: AR83.20-P-1850MCC

1 Remove heater/AC operating unit (N23) 30.8.10 P- 1850MCC As of 31.8.10 AR83.20- P- 1850MCF 2 Press back catch hook (3) and remove eyelet (2) on heater/AC operating unit (N23)

3 Press catch hook (4) together using suitable pliers, slide cable (1) out of bracket on heater/AC operating unit (N23) in direction of arrow and remove

4 Install in the reverse order

TESTING & REPAIR > REMOVE/INSTALL HEATER/VENTILATION OPERATING UNIT - AR83.20-P-1850MCC > MODEL 451.3 /4 up to 30.8.10 except CODE (I01) Air conditioning Plus Remove/install

1.1 Remove center stowage compartment on center part of dashboard For vehicleswithout code (C50) smart radio 10 or without code (C57) smart radio 9 AR68.10- P- 1620MCC Fig 1: Identifying Heater/Ventilation Operating Unit Components Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Remove smart radio 9 or smart radio 10

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2521 · Applies to: 450, 451, 452, 454 · AR: AR83.20-P-1850MCF

1.2 Remove smart radio 9 or smart radio 10 For vehicleswith code (C50) smart radio 10 or with code (C57) smart radio 9 AR82.60- P- 7502MCC 2 Turn air distribution control lever (1) to footwell ventilation position

3 Move temperature control lever (2) to lowest position

4 Set fan speed control lever (4) to speed 2

5 Remove screws (3) on heater/air conditioning operating unit (N23)

6 Use a suitable screwdriver (10) to release bracket (arrow C) of flexible shaft (6) and detach flexible shaft (6) from guide wheel (11)

7 Press back catch hook (arrow B) and remove eyelet (8) from relay lever (9)

8 Press catch hook (arrows A) together using suitable pliers and press cable (7) out of bracket on heater housing in direction of arrow

9 Release electrical connectors (5) and disconnect from heater/AC operating unit (N23)

10 Remove heater/air conditioning operating unit (N23) Note installation position of flexible shaft (6) and cable (7).

11 Remove cable (7) When the operating unit is replaced Heater/AC (N23). AR83.20- P- 1400MCC 12 Remove flexible shaft (6) When the operating unit is replaced Heater/AC (N23). AR83.10- P- 1401MCC 13 Install in the reverse order

14 Perform function test on heater/air conditioning operating unit (N23)

TESTING & REPAIR > REMOVE/INSTALL HEATER/VENTILATION OPERATING UNIT - AR83.20-P-1850MCF > MODEL 451.3 /4 as of 31.8.10 except CODE (I01) Air conditioning Plus

Remove/install

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2522 · Applies to: 450, 451, 452, 454 · AR: AR83.25-P-1000MCU

1 Remove center air vent

AR68.10- P- 1150MCF 2 Remove bolts (1)

3 Unhook heater operating unit / A/C (N23) from bracket (arrow) at left and right and remove Note installation position of flexible shaft (2).

4 Remove flexible shaft (2) When the operating unit is replaced Heater/AC (N23). AR83.10- P- 1401MCC 5 Remove heater control cable When the operating unit is replaced Heater/AC (N23).

• not for USA AR83.20- P- 1400MCC
• for USA only AR83.20- P- 1400MCU 6 Install in the reverse order

7 Perform function test on heater/air conditioning operating unit (N23)

TESTING & REPAIR > REMOVE/INSTALL HEATER HOUSING - AR83.25-P-1000MCU > Fig 1: Identifying Heater/AC Operating Unit, Screw And Flexible Shaft Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Expose electrical

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2526 · Applies to: 450, 451, 452, 454 · AR: AR83.25-P-1124MCC

16 Expose electrical wiring harness (13) on heater housing (3) and remove When replacing the heater housing (3).

17 Remove bolt (5) and remove cover (8) When replacing the heater housing (3).

18 Pull heat exchanger (12) out of heater housing (3) When replacing the heater housing (3).

19 Install in the reverse order

TESTING & REPAIR > REMOVE AND INSTALL AIR CONDITIONING CONTROL AND OPERATING UNIT - AR83.25-P-1124MCC > MODEL 451.3 /4 up to 30.8.10 with CODE (I01) Air conditioning Plus Remove/install

1.1 Remove center stowage compartment on center part of dashboard For vehicleswithout code (C50) smart radio 10 or without code (C57) smart radio 9 AR68.10- P- 1620MCC Fig 1: Identifying Air Conditioning Control And Operating Unit Components Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Remove smart radio 9 or smart radio 10

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2527 · Applies to: 450, 451, 452, 454 · AR: AR83.25-P-1124MCF

1.2 Remove smart radio 9 or smart radio 10 For vehicleswith code (C50) smart radio 10 or with code (C57) smart radio 9 AR82.60- P- 7502MCC 2 Turn air distribution control lever (1) to footwell ventilation position

3 Set temperature control lever and fan stage control lever to center position

4 Remove screws (2) on heater/air conditioning operating unit (N23)

5 Use a suitable screwdriver (5) to release bracket (arrow) of flexible shaft (3) and detach flexible shaft (3) from guide wheel (4)

6 Detach electrical connector (6) from heater/ air conditioning operating unit (N23)

7 Release locks (8) and detach electrical connectors (7)

8 Remove heater/air conditioning operating unit (N23)

9 Remove flexible shaft (3) When the operating unit is replaced Heater/AC (N23). AR83.10- P- 1401MCC 10 Install in the reverse order

11 Perform function test on heater/air conditioning operating unit (N23)

TESTING & REPAIR > REMOVE AND INSTALL AIR CONDITIONING CONTROL AND OPERATING UNIT - AR83.25-P-1124MCF > MODEL 451.3 /4 as of 31.8.10 with CODE (I01) Air conditioning Plus

Remove/install

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2528 · Applies to: 450, 451, 452, 454 · AR: AR83.25-P-1200MCU

1 Remove center air vent

AR68.10- P- 1150MCF 2 Remove bolts (1)

3 Unhook heater operating unit / A/C (N23) from bracket (arrow) at left and right and remove Note installation position of flexible shaft (2).

4 Remove flexible shaft (2) When the operating unit is replaced Heater/AC (N23). AR83.10- P- 1401MCC 5 Install in the reverse order

6 Perform function test on heater/air conditioning operating unit (N23)

TESTING & REPAIR > REMOVE AND INSTALL BLOWER MOTOR - AR83.25-P-1200MCU > MODEL 451.3 /4 Fig 1: Identifying Heater/AC Operating Unit, Screw And Flexible Shaft Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Shown on vehicle with Code (I01) AC Plus

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2529 · Applies to: 450, 451, 452, 454 · AR: AR83.25-P-1250MCC

Remove/install 1 Adjust left seat to the rear 2 Detach electrical connector (2) on blower motor (M2) 3 Release lock (1) on blower motor (M2) 4 Detach blower motor (M2) by turning in counterclockwise direction and removing from air conditioning or heater housing 5 Install in the reverse order 6 Perform function test on blower motor (M2) TESTING & REPAIR > REMOVE AND INSTALL SERIES RESISTOR FOR HEATER BLOWER - AR83.25-P-1250MCC > MODEL 451.3 /4 Fig 1: Identifying Blower Motor, Electrical Connector And Lock Courtesy of MERCEDES-BENZ OF NORTH AMERICA. Fig 1: Identifying Blower Motor Series Resistor Group And Electrical Connector Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

ho e (1) with air conditioning leak

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2532 · Applies to: 450, 451, 452, 454 · AR: AR83.30-P-1760MCC

12 ho e (1) with air conditioning leak detector Remove/install air conditioner housing AR83.30- P- 5200MCU 13 Inspect refrigerant lines with air conditioning leak detector If leaks are found, the refrigerant lines affected must be replaced.Refer to: ↓

Remove/install refrigerant lines at refrigerant compressor AR83.30- P- 7810MCU Remove/install refrigerant line between refrigerant compressor and evaporator AR83.30- P- 7811MCU Remove/install refrigerant line between evaporator and condenser AR83.30- P- 7812MCU Remove/install refrigerant line between condenser and refrigerant compressor AR83.30- P- 7813MCU Install

14 Position rear drive module

AR01.00- P- 3050MCU 15 Lift vehicle using the vehicle lift and install underfloor paneling

16 Install CBS rear

AR88.20- P- 1900MCC 17 Install front CBS

AR88.00- P- 1010MCC 18 Install maintenance flap

TESTING & REPAIR > DRAIN, EVACUATE AND REFILL AIR CONDITIONING, CHECK FUNCTION AND CHECK FOR LEAKS - AR83.30-P-1760MCC > MODEL 451.3 /4 with CODE (I01) Air conditioning Plus

Remove refrigerant pressure

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2543 · Applies to: 450, 451, 452, 454 · AR: AR83.30-P-5520MCU

4 Remove refrigerant pressure sensor (B12) from refrigerant line (2) Close off refrigerant line (2) using appropriate stop plug, as otherwise penetrating dirt and moisture damage components that are connected to the refrigerant circuit.

*BA83.30- P-1001- 01L 5 Remove filter dryer Always replace the filter drier after opening the refrigerant circuit AR83.30- P- 6525MCC 6 Install in the reverse order

AIR CONDITIONING Number Designation Model 451.3/4 BA83.30-P-1001-01L Refrigerant pressure sensor to AC line Nm 10 TESTING & REPAIR > REMOVE/INSTALL EXPANSION VALVE - AR83.30-P-5520MCU > MODEL 451.3 /4 (except 451.391 /491) with CODE (I01) Air conditioning Plus

Remove/install

Risk of explosion caused by welding or soldering work on closed air conditioning system. Risk of poisoning caused by inhaling overheated refrigerant vapors. Risk of injury to skin and eyes caused by contact with liquid refrigerant. Never perform welding work on or near a closed air conditioning system. No smoking or open flames. Wear safety glasses and protective gloves. Work only in well ventilated areas. Carry out repair work on the air conditioning system circuit only after the system has been discharged. AS83.00- Z-0001- 01A Procedure for a damaged or leaky air conditioning system

AH83.30- N-0004- 01A Fig 1: Identifying Expansion Valve, Refrigerant Lines, Bolts And Nuts Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

suction line (2) and the service

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2548 · Applies to: 450, 451, 452, 454 · AR: AR83.30-P-5555MCC

2 suction line (2) and the service valve of the pressure line (3) Air conditioner service unit

3 Remove valve element (1) on service valve of pressure line (3) In model 451.391/491, the valve insert (1) must be removed using a commercially available valve wrench for Schrader valves (connection width 4.5 mm).In model 451 (except 451.391/491), the valve wrench must be used.

Valve wrench Figure 4 Install in the reverse order

TESTING & REPAIR > CLEANING THE EVAPORATOR - AR83.30-P-5555MCC > MODEL 451.3 /4 with CODE (I01) Air conditioning Plus Fig 2: Valve Wrench (203 589 03 10 00) Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Install evaporator temperature

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2551 · Applies to: 450, 451, 452, 454 · AR: AR83.30-P-6525MCC

18 Install evaporator temperature sensor

AR83.30- P- 8085MCC PARTS ORDERING NOTES Part no. Designation Quantity A 000 581 00 04 Set consisting of pressure-feed spray gun with 2 spray probes and accessories (disinfection cleaning equipment) 1 A 009 989 61 71 Mercedes-Benz Contra Sept disinfection cleaner for air conditioning systems (contents 1 l) 1 Replacement parts Only order when required A 000 997 15 03 Mixed use 1 A 005 997 47 89 Quick coupling 1 A 016 997 91 45 Flat sealing ring 1 A 000 581 00 05 954 mm spray probe 1 A 000 581 01 05 1054 mm spray probe 1 TESTING & REPAIR > REMOVE/INSTALL DEHYDRATOR - AR83.30-P-6525MCC > MODEL 451.3 /4 with CODE (I01) Air conditioning Plus Fig 1: Identifying Filling Valve, Pressure Line And Suction Pipe Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Carefully push in pin (arrow) on

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2553 · Applies to: 450, 451, 452, 454 · AR: AR83.30-P-6540MCU

3 Carefully push in pin (arrow) on filling valve (1) of intake line (3) and filling valve (1) of pressure line (2) until air conditioning system is completely unpressurized

Risk of death caused by vehicle slipping or toppling off of the lifting platform. Align vehicle between columns of vehicle lift and position four support plates at vehicle lift support points specified by vehicle manufacturer. AS00.00- Z-0010- 01A 4 Raise the vehicle using the vehicle lift and remove underfloor panelings Rechargeable drill / screwdriver

5 Carefully pull front CBS (5) forwards and remove screw (6)

6 Screw a suitable screw (9) into the cover (7)

7 Push cover (7) with screw (9) upwards until circlip (8) is relieved

8 Remove circlip (8) and remove cover (7) from below

9 Gently push front module towards the rear and withdraw filter drier (4) from condenser from below

10 Install in the reverse order

TESTING & REPAIR > REMOVE/INSTALL CONDENSER - AR83.30-P-6540MCU > MODEL 451.3 /4 with CODE (I01) Air conditioning Plus Fig 1: Identifying Capacitor, Refrigerant Line, Nut And Catch Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Remove/install

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2554 · Applies to: 450, 451, 452, 454 · AR: AR83.30-P-7810MCU

Risk of explosion caused by welding or soldering work on closed air conditioning system. Risk of poisoning caused by inhaling overheated refrigerant vapors. Risk of injury to skin and eyes caused by contact with liquid refrigerant. Never perform welding work on or near a closed air conditioning system. No smoking or open flames. Wear safety glasses and protective gloves. Work only in well ventilated areas. Carry out repair work on the air conditioning system circuit only after the system has been discharged. AS83.00- Z-0001- 01A Procedure for a damaged or leaky air conditioning system

AH83.30- N-0004- 01A Protect air conditioning circuit and components from moisture when carrying out repair work

AH83.30- N-0005- 01A Notes on handling refrigerant R134a

AH83.30- N-0003- 01A 1 Remove front module

AR62.30- P- 1575MCU 2 Discharge air conditioning system Installation: Evacuate air conditioning and then fill. AR83.30- P- 1760MCC 3 Unscrew nut (3) from condenser (1) and detach refrigerant lines (2) from condenser (1) Close off refrigerant lines (2) and condenser (1) using appropriate stop plugs, as otherwise penetrating dirt and moisture damage components that are connected to the refrigerant circuit. Installation: Replace seal rings on refrigerant lines (2).

4 Unclip condenser (1) from catch (4), swivel forwards at the left- hand side and remove

5 Remove filter dryer Installation: Always replace the filter drier after opening the refrigerant circuit. AR83.30- P- 6525MCC 6 Install in the reverse order

TESTING & REPAIR > REMOVE/INSTALL REFRIGERANT LINES AT REFRIGERANT COMPRESSOR - AR83.30-P-7810MCU > MODEL 451.3 /4 (except 451.391 /491) with CODE (I01) Air conditioning Plus Shown on model 451.3 up to production date 2.6.08

TESTING & REPAIR > REMOVE/INSTALL REFRIGERANT LINE BETWEEN REFRIGERANT

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2557 · Applies to: 450, 451, 452, 454 · AR: AR83.30-P-7811MCU

COMPRESSOR AND EVAPORATOR - AR83.30-P-7811MCU > MODEL 451.3## /4## (except 451.391 /491) 1# with CODE (I01) Air conditioning Plus Shown on model 451.4 up to production date 2.6.08 Fig 2: Identifying Cutting Tool Set (452 589 00 33 00) Courtesy of MERCEDES-BENZ OF NORTH AMERICA. Fig 1: Identifying Refrigerant Line Between Refrigerant Compressor And Evaporator Components (1 Of 2) Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

TESTING & REPAIR > REMOVE/INSTALL REFRIGERANT LINE BETWEEN EVAPORATOR

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2561 · Applies to: 450, 451, 452, 454 · AR: AR83.30-P-7812MCU

AND CONDENSER - AR83.30-P-7812MCU > MODEL 451.3 /4 (except 451.391 /491) with CODE (I01) Air conditioning Plus

Remove/install

Fig 4: Identifying Mount (451 589 01 31 00) Courtesy of MERCEDES-BENZ OF NORTH AMERICA. Fig 5: Identifying Cutting Tool Set (452 589 00 33 00) Courtesy of MERCEDES-BENZ OF NORTH AMERICA. Fig 1: Identifying Refrigerant Line Between Evaporator And Condenser Components Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

remove seal rings of refrigerant

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2563 · Applies to: 450, 451, 452, 454 · AR: AR83.30-P-7813MCU

lines (1, 4) Installation: Replace sealing rings at refrigerant lines (1, 4) and coat with compressor oil when inserting. Compressor oils (specification 362.0) Sheet 362.0 BB00.40- P-0362- 00A 8 Loosen refrigerant line (7) from guide for refrigerant line (4) and remove refrigerant line (4)

9 Remove filter dryer Installation: Always replace the filter drier after opening the refrigerant circuit. AR83.30- P- 6525MCC 10 Install in the reverse order

AIR CONDITIONING Number Designation Model 451.3/4 BA83.30-P-1004-01L Nut, refrigerant lines to expansion valve Nm 4 TESTING & REPAIR > REMOVE/INSTALL REFRIGERANT LINE BETWEEN CONDENSER AND REFRIGERANT COMPRESSOR - AR83.30-P-7813MCU > MODEL 451.3## /4## (except 451.391 /491) 1# with CODE (I01) Air conditioning Plus Shown on model 451.4 up to production date 2.6.08

TESTING & REPAIR > REMOVE AND INSTALL EVAPORATOR TEMPERATURE SENSOR -

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2567 · Applies to: 450, 451, 452, 454 · AR: AR83.30-P-8085MCC

AR83.30-P-8085MCC > MODEL 451.3 /4 with CODE (I01) Air conditioning Plus Fig 2: Identifying Removal Assembly (450 589 02 62 00) Courtesy of MERCEDES-BENZ OF NORTH AMERICA. Fig 3: Identifying Mount (451 589 01 31 00) Courtesy of MERCEDES-BENZ OF NORTH AMERICA. Fig 4: Identifying Cutting Tool Set (452 589 00 33 00) Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

CAPACITIES & SPECIFICATIONS > AIR CONDITIONING - BF83.30-P-1000-01C >

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2576 · Applies to: 450, 451, 452, 454 · AR: GF83.10-P-2000MCU

Model 450, 451, 452, 454 MODIFICATION NOTES

Refrigerant filling capacity Model 452.3/4 2.8.07 Refrigerant, filling capacity Model 451.3/4 AIR CONDITIONING SYSTEM Number Designation Model 450.3/4 (up to 02.01.2003) Models 450.3/4 (as of 03.01.2003) Model 451.3/4 except 451.391/491 BF83.30- P-1001- 01C Refrigerants Filling capacity g 590 (+25) 400 (+50) 430 (+0/-20) Specifications for Operating Fluids Sheet - - - AIR CONDITIONING SYSTEM Number Designation Model 451.391/491 Model 452.3/4 Model 454 BF83.30-P- 1001-01C Refrigerants Filling capacity g 550 660 (-25) 430 (±20) Specifications for Operating Fluids Sheet - - - BASIC KNOWLEDGE > VENTILATION SYSTEM, FUNCTION - GF83.10-P-2000MCU > MODEL 451.3 /4 The ventilation system prevents the windows from misting up and ensures that there is a uniform, pleasant Fig 1: Identifying Heating/AC Operating Unit Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

temperature in the vehicle interior.

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2577 · Applies to: 450, 451, 452, 454 · AR: GF83.10-P-2050MCC, GF83.10-P-2201MCC

Function requirements: Circuit 15 On The ventilation allows the following operating modes: Fresh air mode Air recirculation mode (with code (I01) Air conditioning Plus) The following components are actuated by the heater/AC operating unit: Blend air flap actuator (M16/8) (with code (I01) Air conditioning Plus) Air recirculation flap actuator motor (M39) (with code (I01) Air conditioning Plus) Fresh air mode The fresh air is drawn in through the air inlet in the front maintenance flap and passed on into the heater or air conditioner housing (with code (I01) Air conditioning Plus) via the pollen filter. Depending on the preselection via the air distribution rotary switch, the fresh air is passed on via the blend air flap into the vehicle interior through the air ducts and air outlets (arrows). On vehicles with code (I01) Air conditioning Plus, the blend air flap is actuated via the blend air flap actuator, which is actuated by the heater/AC operating unit depending on the following information: Specified temperature set on the temperature preselection slider switch Interior temperature Temperature on evaporator Coolant temperature On vehicles without code (I01) Air conditioning Plus, the blend air flap is adjusted mechanically by the temperature preselection slider switch in the heater/AC operating unit by means of a cable. Depending on the actuation of the blend air flap, it opens or closes the air passage through the heater heat exchanger. The blower switch (S98/1) integrated in the heater/air conditioning control unit can be used to regulate the air flow over the blower motor (M2). Air recirculation mode (with code (I01) Air conditioning Plus) By actuating the air recirculation switch (N23s3) on the heater/AC operating unit, the air recirculation flap actuator motor is actuated, which closes the air recirculation flap. As a result, supply of outside air is prevented; the air only circulates in the vehicle interior and unpleasant odors and harmful gases are kept out. The visual feedback of air recirculation mode takes place via the light-emitting diode integrated in the air recirculation switch. Blower, component description M2 GF83.10-P-2050MCC Actuator motors, component M16/8, M39For code (I01) Air GF83.10-P-2201MCC

description

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2578 · Applies to: 450, 451, 452, 454 · AR: GF83.40-P-3001MCC, GF83.40-P-3001MCU, GF83.10-P-2050MCC

conditioning Plus Component description for the heater/air conditioning operating unit N23Without code (I01) Air conditioning Plus GF83.40-P-3001MCC For code (I01) Air conditioning Plus GF83.40-P-3001MCU BASIC KNOWLEDGE > BLOWER, COMPONENT DESCRIPTION - GF83.10-P-2050MCC > MODEL 451.3 /4 Location The blower motor is located under the instrument panel at the left on the air conditioner housing. Task The blower motor supplies air to the vehicle interior. The blower motor is actuated via the blower switch (S98/1) integrated into the heater/air conditioning operating unit (N23). BASIC KNOWLEDGE > ACTUATOR MOTORS, COMPONENT DESCRIPTION - GF83.10-P- 2201MCC > MODEL 451.3 /4 with CODE (I01) Air conditioning Plus Location The blend air flap actuator and the air recirculation flap actuator motor are located on the right of the air conditioner housing. Task Adjusting the blend air and air recirculation flap depending on the specifications of the heater/AC operating unit (N23). Fig 1: Identifying Blower Motor Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Blend air flap actuator

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2579 · Applies to: 450, 451, 452, 454 · AR: GF83.20-P-2003MCU

The blend air flap actuator is used to adjust the ventilation temperature of the vehicle interior. The blend air flap actuator is actuated via the heater/AC operating unit depending on the position of the temperature preselection slider switch and the actual interior temperature according to defined characteristics and moves the blend air flap. The blend air flap opens or closes the air passage in order to achieve the desired interior temperature. The specified flap angle of the blend air flap is determined by the heater/AC operating unit depending on the following information: Specified temperature set on the temperature preselection slider switch Measured interior temperature Temperature measured at the evaporator Coolant temperature The blend air flap actuator reports its position to the heater/AC operating unit via an integrated potentiometer. Recirculated air flap actuator motor The air recirculation flap actuator motor is used to close or open the air recirculation flap. This allows or prevents the fresh air supply from the outside into the air conditioner housing. When the air recirculation switch (N23s3) on the heater/AC operating unit is pressed, the air recirculation flap actuator motor is actuated. In air recirculation mode, air is drawn out of the vehicle interior into the air conditioner housing. BASIC KNOWLEDGE > HEATER CIRCUIT FUNCTION - GF83.20-P-2003MCU > MODEL 451.3 /4 Fig 1: Identifying Air Recirculation Flap Actuator Motor And Blend Air Flap Actuator Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Function

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2580 · Applies to: 450, 451, 452, 454 · AR: GF83.20-P-3123MCU

The coolant pump pumps cold coolant through the engine. There, the coolant absorbs the engine heat and then flows over the thermostat to the coolant pump (small coolant circuit). If the engine has reached its operating temperature, the thermostat opens the large coolant circuit. This subdivides immediately after the thermostat into the cooling circuit and the heating circuit. In the heating circuit, the coolant flows to the heater heat exchanger via the heating circuit coolant feed pipe. The air flowing through the heater heat exchanger is warmed up in the process and routed into the vehicle interior. Next, the coolant flows from the heater heat exchanger to the expansion reservoir and from there to the cooler or back to the coolant pump via the coolant return line. In the cooling circuit, the coolant flows from the thermostat via the coolant feed pipe for the cooling circuit to the cooler and from there onward to the coolant pump via the coolant return line. Heating system heat exchanger, component description GF83.20-P-3123MCU BASIC KNOWLEDGE > HEATING SYSTEM HEAT EXCHANGER, COMPONENT DESCRIPTION - GF83.20-P-3123MCU > MODEL 451.3 /4 Fig 1: Heater Circuit Function Diagram Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

BASIC KNOWLEDGE > AUTOMATIC HEATER (HEAT) FUNCTION - GF83.25-P-0001MCU >

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2582 · Applies to: 450, 451, 452, 454 · AR: GF83.25-P-0001MCU

MODEL 451.3 /4 except CODE (I01) Air conditioning Plus Description The automatic heater has a mechanically adjustable heating and ventilation system. By means of the automatic heater, the vehicle interior can be heated or ventilated. It is only possible to cool down the vehicle interior to the temperature of the ambient air. The following functions were realized: Heating circuit Ventilation Control Heating circuit The coolant is heated up by the engine. After this, the heated-up coolant is routed through the heater heat exchanger, where the heat is given off to the air flowing through the heater heat exchanger. The coolant returns back to the coolant pump via the heater return. Ventilation The ventilation system ventilates the interior of the vehicle. The air is drawn in by the blower motor (M2) and passes through the various air ducts to the air distribution flaps which distribute it in the vehicle interior. Control A specified temperature is preset on the temperature preselection slider switch. This setting is transmitted to Fig 1: Identifying Automatic Heater (HEAT) Component Locations Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

the blend air flap in the heater housing via a cable. Depending on the position of the temperature

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2583 · Applies to: 450, 451, 452, 454 · AR: GF83.10-P-2000MCU, GF83.20-P-2003MCU, GF83.25-P-2001MCU, GF83.25-P-0999MCU, GF83.25-P-0001MCU (+5 more)

preselection slider switch, the blend air flap distributes the air flow between the heater heat exchanger and the air outlet nozzles in the vehicle interior. Automatic heater (HEAT) component locations GF83.25-P-0001-02MCU Ventilation system, function GF83.10-P-2000MCU Heater circuit function GF83.20-P-2003MCU Automatic heater control function GF83.25-P-2001MCU BASIC KNOWLEDGE > AUTOMATIC HEATER (HEAT) FUNCTION DESCRIPTION CONTENTS - GF83.25-P-0999MCU > MODEL 451.3 /4 except CODE (I01) Air conditioning Plus Automatic heater (HEAT) function GF83.25-P-0001MCU Automatic heater (HEAT) component locations GF83.25-P-0001-02MCU Ventilation system, function GF83.10-P-2000MCU Heater circuit function GF83.20-P-2003MCU Automatic heater control function GF83.25-P-2001MCU Overview of automatic heater (HEAT [HAU]) system components GF83.25-P-9998MCU BASIC KNOWLEDGE > AUTOMATIC HEATER CONTROL FUNCTION - GF83.25-P- 2001MCU > MODEL 451.3 /4 except CODE (I01) Air conditioning Plus Function The automatic heater is regulated mechanically for the most part. The heater/AC operating unit (N23) is the central operating unit for regulating the heater. The air distribution rotary switch makes it possible to adjust which air outlet nozzles the air is to be routed through into the vehicle interior. The intensity of air heating is adjusted via the temperature preselection slider switch. The heater heat exchanger located in the air flow of the blower delivers the heat of the coolant to the air blowing by. The strength of the air flow is set on the blower switch (S98/1) on the heater/ AC operating unit. The SAM control unit (N10/10) reads in the blower switch and then energizes the blower motor (M2). Heating system heat exchanger, component description

GF83.20-P-3123MCU Blower, component description M2 GF83.10-P-2050MCC Component description for the SAM control unit N10/10 GF54.21-P-4157MCU Component description for the heater/air conditioning operating unit N23 GF83.40-P-3001MCC

BASIC KNOWLEDGE > OVERVIEW OF AUTOMATIC HEATER (HEAT [HAU]) SYSTEM

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2584 · Applies to: 450, 451, 452, 454 · AR: GF83.25-P-9998MCU, GF83.20-P-3123MCU, GF83.10-P-2050MCC, GF54.21-P-4157MCU, GF83.40-P-3001MCC (+1 more)

COMPONENTS - GF83.25-P-9998MCU > MODEL 451.3 /4 except CODE (I01) Air conditioning Plus Heating system heat exchanger, component description

GF83.20-P-3123MCU Blower, component description M2 GF83.10-P-2050MCC Component description for the SAM control unit N10/10 GF54.21-P-4157MCU Component description for the heater/air conditioning operating unit N23 GF83.40-P-3001MCC Automatic heater (HEAT) function description contents

GF83.25-P-0999MCU BASIC KNOWLEDGE > AUTOMATIC AIR CONDITIONING (AAC) COMPONENT LOCATIONS - GF83.40-P-0001-01MCU > BASIC KNOWLEDGE > AUTOMATIC AIR CONDITIONING (AAC), FUNCTION - GF83.40-P- Fig 1: Identifying Automatic Air Conditioning (AAC) Component Locations Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

(if temperature on evaporator is below 3°C)

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2586 · Applies to: 450, 451, 452, 454 · AR: PE83.30-P-2050MCU, PE83.30-P-2000MCU, GF83.10-P-2000MCU, GF83.40-P-2001MCC, GF83.20-P-2003MCU (+4 more)

At outside temperatures below 3°C, the refrigerant compressor cannot be activated.

Automatic air conditioning (AAC) component locations GF83.40-P-0001-01MCU Electrical function diagram for air conditioning PE83.30-P-2050MCU Wiring diagram of air conditioning PE83.30-P-2000MCU

Ventilation system, function GF83.10-P-2000MCU

Refrigeration cycle function GF83.40-P-2001MCC

Heater circuit function GF83.20-P-2003MCU

Regulation of Automatic air conditioning, function GF83.40-P-2004MCU BASIC KNOWLEDGE > TABLE OF CONTENTS, AUTOMATIC AIR CONDITIONING (AAC) FUNCTION DESCRIPTION - GF83.40-P-0999MCU > MODEL 451.3 /4 with CODE (I01) Air conditioning Plus

Automatic air conditioning (AAC), function GF83.40-P-0001MCU

Automatic air conditioning (AAC) component locations GF83.40-P-0001-01MCU Electrical function diagram for air conditioning PE83.30-P-2050MCU Wiring diagram of air conditioning PE83.30-P-2000MCU

Ventilation system, function GF83.10-P-2000MCU

Refrigeration cycle function GF83.40-P-2001MCC

Heater circuit function GF83.20-P-2003MCU

Regulation of Automatic air conditioning, function GF83.40-P-2004MCU

Survey of automatic air conditioning (AAC), system components GF83.40-P-9992MCU BASIC KNOWLEDGE > REFRIGERATION CYCLE FUNCTION - GF83.40-P-2001MCC > MODEL 451.3 /4 with CODE (I01) Air conditioning Plus

Function

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2587 · Applies to: 450, 451, 452, 454 · AR: GF83.40-P-2190MCC, GF83.40-P-2188MCC, GF83.40-P-2189MCC, GF83.55-P-2108MCC, GF83.55-P-2108MCU

The refrigerant compressor driven by the engine aspirates the gaseous refrigerant from the evaporator, compresses it, and pushes it into the high-pressure circuit to the condenser as a hot gas. The refrigerant gives off the compression heat through the surface of the condenser and liquefies in the process. When it flows through the desiccant cartridge integrated in the condenser, the refrigerant is dehydrated and cleaned of chemical and mechanical impurities. The expansion valve sprays the liquid refrigerant into the refrigerant line leading to the evaporator. In the process, the refrigerant pressure drops, whereby the aggregate state of the refrigerant starts to change from liquid to gaseous. The refrigerant flows through the evaporator. While doing so, thermal energy is supplied to the refrigerant through the air blowing by the outside of the evaporator, which is needed by the refrigerant in order to be able to evaporate completely. At the same time, the air blowing by is cooled down, dried, and routed into the vehicle interior. The condensation water developing while the air is cooling down is routed to the outside. The refrigerant compressor aspirates the refrigerant which has turned gaseous on account of the heat absorption and then compresses it yet again. Expansion valve, component description

GF83.40-P-2190MCC Condenser, component description

GF83.40-P-2188MCC Evaporator, component description

GF83.40-P-2189MCC Component description of refrigerant compressor A9* not for USA GF83.55-P-2108MCC * for USA only GF83.55-P-2108MCU Fig 1: Refrigeration Cycle Function Diagram Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Evaporator temperature

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2588 · Applies to: 450, 451, 452, 454 · AR: GF83.57-P-2126MCC, GF83.40-P-2193MCC, GF83.10-P-2050MCC, GF83.40-P-2004MCU

sensor, component description B10/6 GF83.57-P-2126MCC Refrigerant pressure sensor, component description B12 GF83.40-P-2193MCC Blower, component description M2 GF83.10-P-2050MCC BASIC KNOWLEDGE > REGULATION OF AUTOMATIC AIR CONDITIONING, FUNCTION - GF83.40-P-2004MCU > MODEL 451.3 /4 with CODE (I01) Air conditioning Plus Function The automatic air conditioning is regulated via the heater/AC operating unit, which is networked with the vehicle electronics via CAN. This permits the best possible climate control while considering any climate- relevant events, as well as the adaptation of the engine management to the power absorption capacity of the refrigerant compressor. The following information is directly read in by the heater/AC operating unit: Evaporator temperature via evaporator temperature sensor Refrigerant pressure via refrigerant pressure sensor Interior temperature via the interior temperature sensor (N23b1) integrated in the heater/AC operating unit Fig 1: Regulation Of Automatic Air Conditioning Function Diagram Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

The expansion valve separates the refrigerant circuit's high-pressure area from the low-pressure area.

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2592 · Applies to: 450, 451, 452, 454 · AR: GF83.40-P-2193MCC, GF83.40-P-3001MCC

Function When the refrigerant compressor (A9) is switched on, the pressure in the evaporator decreases causing a diaphragm in the expansion valve to arch. The diaphragm motion is transferred to a linkage. The linkage presses the valve ball out of its seat opening the valve. The opened valve enables the refrigerant to be sprayed into the evaporator. BASIC KNOWLEDGE > REFRIGERANT PRESSURE SENSOR, COMPONENT DESCRIPTION - GF83.40-P-2193MCC > MODEL 451.3 /4 with CODE (I01) Air conditioning Plus Location The refrigerant pressure sensor is located at the left behind the condenser on the pressure line of the refrigerant circuit. Task The refrigerant pressure sensor is used for measuring the refrigerant pressure. The value determined by the refrigerant pressure sensor is directly read in by the heater/air conditioning operating unit (N23). BASIC KNOWLEDGE > HEATER/AIR CONDITIONING OPERATING UNIT, COMPONENT DESCRIPTION - GF83.40-P-3001MCC > MODEL 451.3 /4 except CODE (I01) Air conditioning Plus Fig 1: Identifying Refrigerant Pressure Sensor Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Air distribution rotary switch

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2594 · Applies to: 450, 451, 452, 454 · AR: GF83.40-P-3001MCU

The air outlet nozzles are selected via the air distribution rotary switch. For this purpose, 12 positions of the air distribution rotary switch are available, which are arranged in the following 3 main directions. Windshield Footwell Passenger compartment Blower switch The 3-stage blower switch is used to define the intensity of the air the blower motor (M2) delivers into the vehicle interior. Rear windshield heater The heater/AC operating unit transmits, after the heated rear window switch is pressed, a switch-on request to the SAM control unit (N10/10), which energizes the heated rear window (R1). Simultaneously, the function LED in the heated rear window switch is switched on. If the heated rear window switch is pressed again, the actuation of the heated rear window is terminated. BASIC KNOWLEDGE > COMPONENT DESCRIPTION FOR THE HEATER/AIR CONDITIONING OPERATING UNIT - GF83.40-P-3001MCU > MODEL 451.3 /4 with CODE (I01) Air conditioning Plus Location The heater/AC operating unit is located in the center console. The heater/AC operating unit permits the following operations: Switching the air conditioning system on and off Interior temperature selection cold/warm Fig 1: Identifying Heater/Air Conditioning Operating Unit Components Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

The air distribution rotary switch is used to adjust which air outlet nozzles the air supplied by the blower motor

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2596 · Applies to: 450, 451, 452, 454 · AR: GF83.40-P-9992MCU, GF83.40-P-2190MCC, GF83.40-P-2188MCC

(M2) is routed through into the interior. For this purpose, 12 positions of the air distribution rotary switch are available, which are arranged in the following 3 main directions. Defrost windshield Footwell Passenger compartment If the air distribution rotary switch is turned to "Defrost windshield", the automatic air conditioning is switched on automatically without this being indicated by the light-emitting diode in the air conditioning switch. As long as the air distribution rotary switch is in this position, the automatic climate control cannot be switched off. The set temperature does not have any influence on this function. Temperature preselection slider switch The temperature preselection slider switch is used to determine, how much the air delivered by the blower motor is warmed up. The temperature preselection slider switch is read in by the heater/air conditioner operating unit, which actuates the blend air flap via the blend air flap actuator. Air conditioning switch The air conditioning switch is used to switch the automatic air conditioning on or off. At outside temperatures below 3°C, the refrigerant compressor cannot be activated. Air recirculation switch When the air recirculation switch is operated, the heater/AC operating unit actuates the air recirculation flap actuator motor in order to close the air recirculation flap. When the air recirculation flap is closed, air supply from the outside is prevented. The LED in the air recirculation switch lights up during operation. Blower switch The 4-stage blower switch is used to define the intensity of the air the blower motor delivers into the vehicle interior. Heated rear window switch The heater/AC operating unit transmits, after the heated rear window switch is pressed, a switch-on request to the SAM control unit, which energizes the heated rear window (R1). Simultaneously, the LED in the rear window heater switch is switched on. If the heated rear window switch is pressed again, the actuation of the heated rear window is terminated. BASIC KNOWLEDGE > SURVEY OF AUTOMATIC AIR CONDITIONING (AAC), SYSTEM COMPONENTS - GF83.40-P-9992MCU > MODEL 451.3 /4 with CODE (I01) Air conditioning Plus Expansion valve, component description

GF83.40-P-2190MCC Condenser, component description

GF83.40-P-2188MCC

Evaporator, component

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2597 · Applies to: 450, 451, 452, 454 · AR: GF83.40-P-2189MCC, GF83.20-P-3123MCU, GF54.30-P-6000MCU, GF83.55-P-2108MCU, GF83.57-P-2126MCC (+5 more)

description

GF83.40-P-2189MCC Heating system heat exchanger, component description

GF83.20-P-3123MCU Instrument cluster, component description A1 GF54.30-P-6000MCU Component description of refrigerant compressor A9 GF83.55-P-2108MCU Evaporator temperature sensor, component description B10/6 GF83.57-P-2126MCC Coolant temperature sensor, component description B11/4 GF07.04-P-6040MCC Refrigerant pressure sensor, component description B12 GF83.40-P-2193MCC Outside air temperature sender component description B14 GF83.57-P-4000MCC Blower, component description M2 GF83.10-P-2050MCC Actuator motors, component description M16/8, M39 GF83.10-P-2201MCC ME-SFI [ME] control unit, component description N3/10 GF07.61-P-6000MCU Component description for the SAM control unit N10/10 GF54.21-P-4157MCU Component description for the heater/air conditioning operating unit N23 GF83.40-P-3001MCU Table of contents, automatic air conditioning (AAC) function description

GF83.40-P-0999MCU BASIC KNOWLEDGE > COMPONENT DESCRIPTION OF REFRIGERANT COMPRESSOR - GF83.55-P-2108MCU > ENGINE 132.9 in MODEL 451.3 /4 with CODE (I01) Air conditioning Plus

Location

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2598 · Applies to: 450, 451, 452, 454 · AR: GF83.57-P-2126MCC

The refrigerant compressor is installed to the right at the engine and is driven via a poly-V belt. Task The refrigerant compressor is responsible for induction and compression of the refrigerant. The refrigerant compressor is switched on and off by the SAM control unit (N10/10) through the actuation of the magnetic clutch installed at the refrigerant compressor. BASIC KNOWLEDGE > EVAPORATOR TEMPERATURE SENSOR, COMPONENT DESCRIPTION - GF83.57-P-2126MCC > MODEL 451.3 /4 with CODE (I01) Air conditioning Plus Fig 1: Identifying Refrigerant Compressor Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Location

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2599 · Applies to: 450, 451, 452, 454 · AR: GF83.57-P-4000MCC

The evaporator temperature sensor is located on the right side of the air conditioner housing. Task The evaporator temperature sensor records the temperature of the blowby air at the evaporator and forwards it immediately to the heater/air conditioning operating unit (N23). Function The evaporator temperature sensor is a temperature-dependent resistor. The values sent to the heater/air conditioning operating unit enable the required actuation of the blend air flap to be calculated as well as any icing of the evaporator to be avoided through targeted regulation of the refrigerant compressor (A9). BASIC KNOWLEDGE > OUTSIDE AIR TEMPERATURE SENSOR, COMPONENT DESCRIPTION - GF83.57-P-4000MCC > MODEL 451.3 /4 Location The temperature sensor is located at the left below the front crossmember. Fig 1: Identifying Evaporator Temperature Sensor Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Task

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2600 · Applies to: 450, 451, 452, 454 · AR: PE83.00-P-1100MCU

The temperature sensor records the temperature of the outside air and forwards this information as an electrical signal to the instrument cluster (A1). Function The temperature sensor changes its resistance depending on the outside air temperature. WIRING DIAGRAMS > OVERVIEW OF WIRING DIAGRAMS FOR CLIMATE CONTROL - PE83.00-P-1100MCU > MODEL 451 PE83.30-P- 2000MCU Wiring diagram of air conditioning Model 451 except 451.391 /491 PE83.30-P- 2000MCU PE83.30-P- 2000MEV Wiring diagram of air conditioning Model 451.391/ 491 PE83.30-P- 2000MEV PE83.30-P- 2050MCU Electrical function schematic for air conditioning Model 451 PE83.30-P- 2050MCU PE83.55-P- 2001MEV Wiring diagram for electric refrigerant compressor control unit Engine 780.009 in model 451.391 /491 PE83.55-P- 2001MEV Document number: pe82.85-p-2002-97mcu Document title: Wiring diagram of communications interface (KOM) Code: Designation: Position: A2/1 smart radio 9 3L A2/2 smart radio 10 4L A34/16 PND (personal navigation device) holder 13L A34/7 Bluetooth module 19L B25/3 Bluetooth microphone 22D Fig 1: Identifying Outside Temperature Display Temperature Sensor Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

WIRING DIAGRAMS > WIRING DIAGRAM OF AIR CONDITIONING - PE83.30-P-2000MCU >

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2602 · Applies to: 450, 451, 452, 454 · AR: PE83.30-P-2000MCU

MODEL 451 / (except 451.391 /491) PE83.30-P- 2000-97MCU Wiring diagram of air conditioning

PE83.30-P- 2000-97MCU OV00.01-P- 1901-03MCC Use of wiring diagrams

OV00.01-P- 1901-03MCC OV00.01-P- 1901MCU Search aid for all wiring diagram groups

OV00.01-P- 1901MCU OV00.01-P- 1001-27MC Abbreviations for wiring diagrams

OV00.01-P- 1001-27MC OV00.01-P- 1001-28MC Abbreviations of signal and circuit designations for wiring diagrams

OV00.01-P- 1001-28MC GF00.19-P- GF00.19-P- Fig 2: Communications Interface (KOM) - Wiring Diagram (2 Of 2) Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

WIRING DIAGRAMS > ELECTRICAL FUNCTION DIAGRAM FOR AIR CONDITIONING -

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2605 · Applies to: 450, 451, 452, 454 · AR: PE83.30-P-2050MCU

PE83.30-P-2050MCU > MODEL 451 PE83.30-P- 2050-99MCU Electrical function diagram for air conditioning

PE83.30-P- 2050-99MCU PE83.30-P- 2050-60MCU Legend of electrical function diagram for air conditioning

PE83.30-P- 2050-60MCU OV00.01-P- 1901-03MCC Use of wiring diagrams

OV00.01-P- 1901-03MCC OV00.01-P- 1901MCU Search aid for all wiring diagram groups

OV00.01-P- 1901MCU OV00.01-P- 1001-27MC Abbreviations for wiring diagrams

OV00.01-P- 1001-27MC OV00.01-P- 1001-28MC Abbreviations of signal and circuit designations for wiring diagrams

OV00.01-P- 1001-28MC GF00.19-P- 1000MCU Location and assignment of line and connectors

GF00.19-P- 1000MCU GF00.19-P- 2000MCU Location and assignment of ground points

GF00.19-P- 2000MCU GF00.19-P- 3000MCU Location and assignment of Z connector sleeves (line connectors in wiring harness)

GF00.19-P- 3000MCU Further Fig 2: Air Conditioning Electrical Function Diagram (2 Of 2) Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

In tall in the rever e

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2866 · Applies to: 450, 451, 452, 454 · AR: AR82.10-P-5161MCC

7 In tall in the rever e order

TESTING & REPAIR INDEX > REMOVE REAR-END DOOR PANELING - AR72.20-P- 1000MCC > MODEL 451.3 /4

Remove/install

1 Remove license plate lamps

AR82.10-P-5161MCC 2 Open bottom rear-end

Fig 1: Identifying Rear-End Door Paneling Components (1 Of 2) Courtesy of MERCEDES-BENZ OF NORTH AMERICA. Fig 2: Identifying Rear-End Door Paneling Components (2 Of 2) Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Removing

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 4217 · Applies to: 450, 451, 452, 454 · AR: AR82.10-P-5375MCC, AR77.30-P-1100MCU

Notes on soft tops

AH77.30-P-0001- 01MCO 1 Remove center high-mounted stop lamp (E21)

AR82.10-P-5375MCC 2 Remove bolts (2)

3 Remove spoiler (1).

4 Remove old sealant from spoiler (1) and from seal (4) on soft top. If the seal (4) does not make contact to the soft top, reglue completely.

Refer to: ↓

Remove/install folding top AR77.30-P-1100MCU Install

5 Cut sealing strip (3) down to approx. 30 mm as shown on seal (4) on soft top.

*BR00.45-Z-1091-01A 6 Insert bolts (2) into through holes. Aid of helper required.

7 Position spoiler (1) and tighten bolts (2). Aid of helper required.Screw in bolts (2) alternately and uniformly.

Fig 1: Identifying Roof Cassette Spoiler Components Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Install center high-mounted

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 4218 · Applies to: 450, 451, 452, 454 · AR: AR82.10-P-5375MCC, AR77.33-P-2100MCU, AR68.30-P-4700MCV

8 Install center high-mounted stop lamp (E21)

AR82.10-P-5375MCC REPAIR MATERIALS Number Designation Order number BR00.45-Z-1091- 01A Sealing strip 119.32 Terostat 20 x 2 mm www.henkel.com TESTING & REPAIR > REMOVE/INSTALL B-PILLAR CATCH - AR77.33-P-2100MCU > MODEL 451.4 Dimensions: Removing

Notes on soft tops

AH77.30-P-0001- 01MCO 1 Completely open soft top

2 Remove left and right paneling (1) from B-pillar

AR68.30-P-4700MCV Fig 1: Identifying B-Pillar Catch Components Courtesy of MERCEDES-BENZ OF NORTH AMERICA. Fig 2: Identifying B-Pillar Catch Dimension Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

MODIFICATION NOTES

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 4299 · Applies to: 450, 451, 452, 454 · AR: AR82.30-P-6100MCC, AR68.40-P-0001MCC, AR68.40-P-0001MCU, AR82.30-P-7800MCC

9.7.10 Special tool added Step 6.2 Removing

Risk of injury due to tear or warming up of cutting wire and through glass splinters when cutting out glued windows Wear protective gloves and safety glasses. AS67.00-Z-0004-01A Notes on removal/installation of windshield

AH67.10-P-1000- 01MCE Notes on removal/installation of windows

AH67.10-P-1000-02SM 1 Remove maintenance flap

2 Remove wiper arms

AR82.30-P-6100MCC 3 Remove inside rearview mirror * not for USA AR68.40-P-0001MCC

• for USA only AR68.40-P-0001MCU 4 Remove rain/light sensor For vehicles with code (V54) Rain/light sensor AR82.30-P-7800MCC 5 Cover dashboard with suitable protective cover

6.1 Cut out windshield (1) with "Roll out" window removal When using "Roll out" window removal tool. Aid of AR67.10-P-1000- 11MCC Fig 1: View Of Windshield Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Install windshield (1)

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 4302 · Applies to: 450, 451, 452, 454 · AR: AR82.30-P-7800MCC, AR68.40-P-0001MCC, AR68.40-P-0001MCU, AR82.30-P-6100MCC

14 Install windshield (1) Aid of helper required. Fasten windshield (1) with suitable adhesive tape.Cup suction tool gotis://K_67.0_03.0 AR67.10-P-1503- 01MCC 15 Install rain/light sensor For vehicles with code (V54) Rain/light sensor AR82.30-P-7800MCC 16 Install rearview mirror unit * not for USA AR68.40-P-0001MCC

• for USA only AR68.40-P-0001MCU 17 Install wiper arms

AR82.30-P-6100MCC 18 Install maintenance flap

19 Clean windshield (1)

20 Connect Star Diagnosis, read out fault memory, initialize rain/light sensor For vehicles with code (V54) Rain/light sensor AD00.00-P-2000- 04MCC REPAIR MATERIALS Number Designation Order number Fig 2: Identifying Intermediate Piece (000 589 86 63 00) Courtesy of MERCEDES-BENZ OF NORTH AMERICA. Fig 3: Identifying Cutting Wire (450 589 08 63 00) Courtesy of MERCEDES-BENZ OF NORTH AMERICA.