451 — fortwo (2007-2015) — Electrical

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

125 excerpts from 2 sources.

Sources on this page

• 1998-2015 smart fortwo (450_451) - Technical & Service Reference.pdf — 9 excerpts
• 2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf — 116 excerpts

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

Ground cable

1998-2015 smart fortwo (450_451) - Technical & Service Reference.pdf · p. 48 · Applies to: 450, 451 · AR: AR54.13-P-0002SM, AR20.00-P-1142SM, AP18.00-P-0101SM

15 Ground cable 16 Bolt 17 Boll 18 Cable G2 Generator ~lul lfiloangert I& Danger! 1 " 13 .. 15 16 7 8 9 i.a-AP 10 11 12 13 14 15 16 Removing/Installing Risk of dftalh cased by vehide slipping or toppling off of the ~fting platlotm. Risk of explosion caused by f\Jel Igniting, rtsk of poisoning caused by Inhaling and swallowing f\Jel as well as risk of Injury 10 &yes and $!<In caused by contact witll fuel. Push down bra~e pedal several times DiSC011nect electncal cables fNJm battery Remove CMS Rear Remove both &&at consoles Fold over the floor covering Loo&&n the engine wiring harness (2) from the fastening (3) and dlSC011nect the plug (1) Pull out plug (4) Orain coolant Drain engine oU Engine - oil and filtef change PuU out the plug (5) on !he oil pressure switch ($4111) and remove the cable binder oo the line to the oll pressure swit.ch (54111) Remove both rear a:de shafts Remove the generator cover Remove rear underbody paneling Disconnect the engine wiring harness On the area of the undelbody) Support the engine with a suitable rolling ja~ Unscrew bolls (7) and bolts (8) on the engine m0<1nt (arrows) Align vehicle between the columns of the ASOO OO-Z-0010-01A hydraulic hoist and position the four SUPPOrt plates below Ille hoist support points ,specified by the vehicle manufacturer. No fire, sparl<s, open flames or smoking. AS47 00-Z-0001-01A Only pour fuels into witable and apptOpriately marked containers. Wear protective clothing when handUng fuel IW In order to eiiminate any vaausm. AR54.13-P-0002SM AR88.2o-P-1950SM AR911o-P-3000SM W Version conflict: on instBll.ltion of a new engine the engine wiring ham&ss (2) ShOuld also be tenewed. AR20.00-P-1142SM AP18.00-P-0101SM AR35 30-P-0620SM Model 450.3 as of 15.11.99, 450.4 AR15 40-P-5032-02SN AR81 30-P-1001 SM AR54 1S.P·9231-01SM I~ •450589016200 ~ •◄50589014000 W The fact that the engine mount (arrows) is preadjusted means that the central screws between the bearing shells and rubber el&ment.s should not be loosened. !E '8A22.10-P-1005--01M

Batteries - check fluid level, correct

1998-2015 smart fortwo (450_451) - Technical & Service Reference.pdf · p. 77 · Applies to: 450, 451 · AR: AR54.10-P-0005SM

19.7.02 1 Plug G1 Battery P54.10-2234-01 r:!I Inspecting I& Danger! Risk of explosion from hydrogen gas. Risk No fire, sparks, open flames or smoking. AS54.10-Z-0001-01A of poisoning and caustic bums from Wear acid-resistant gloves, clothing and swallowing battery electrolyte. Risk of Injury glasses. Pour battery electrolyte only into to eyes and skin suffering caustic bums from suitable and appropriately marked containers. battery electrolyte or from contact with damaged lead acid batteries. ® Notes on battery AH54.10-P-0001-01A 1 Remove battery (G1) W Put battery down on a protective surface. u;i"AR Remove/install battery AR54.10-P-0005SM 2 Check fluid level of the battery (G 1) W The cells are filled correctly when the fluid reaches the MAX marking (arrows). Correcting 3 Unscrew plug (1) from the battery (G1) 4 Correct the battery acid level w~h dist.illed W Pour in distilled water up to the MAX water marking (arrows) 5 Screw in plug (1) 6 Install battery (G1) W Put battery down on a protective surface. ~A R Remove/install battery AR54.10-P-0005SM

up toWME01MCO12H106037

1998-2015 smart fortwo (450_451) - Technical & Service Reference.pdf · p. 94 · Applies to: 450, 451 · AR: AR54.10-P-0003SM, AR13.22-P-1202SM

5.11.03 up toWME01MCO12H106037 ENGINE 160.920 in MODEL 450.3 /4 as of WME4503001J000001 Nuts 2 Locknut 3 Bracket " Adjusting screw 5 Bolt G2 Alternator PlS.40-2228-04 I~~ Remove/Install , Disconnect battery ground cable AR54.10-P-0003SM 2 Lower rear drive modu~ AR01 OO-P-3050SM 3 Remove poly V-belt AR13.22-P-1202SM 4.1 Remove the alternator cover Wexcept 450.418. AR15.40-P-5032-02SN III Installation: Comply with connector assignment, see: t Alternator connector assignment (G2) AR15.40-P-5032-1 OSM IS Unscrew lock nut (2) at bracket (3) and ~ •BAtS 40-P-100EHl1G remove adjusting screw (4) " 1unscrew nuts (1) at alternator (G2) and I~ 'BA 15.40-P-1001-01G disconnect electrical connection ~ "BA15 40-P-1002-01G 7 Remove bolt (5) of alternator to major 11?!1 "BA15.40-P-l003-01G assembly canier 8 Remove alternator (G2) 9 tnstall in the reverse order 10 Read out fault memory ~ AD Connect STAR DIAGNOSIS and read out AD00.0O-P-2000-04SM fault memory STAR DIAGNOSIS d iagnosis system -WH58.30-Z-1048-13A P'.!'! Altemator Number Oeslgnallon Engine Engine 160.910 160.920 BA15.40-P-1001-01G Cable to alternator terminal D+ Nm 8 8 BA15.40-P-1002-01G Cable to alternator terminal B+ Nm 8 8 BA15.40-P-1003-01G Bolt, alternator to carrier Nm 27.5 25 BA15.40•P·1006-0fG Adjusting nut to alternator Nm 27.5 25 Commercially available tools Number Designation 56.30-.Z,1048-13A STAR DIAGNOSIS diagnosis system. ompact assengerCat 6511 1801 00

AR54.10-P-0003SM

1998-2015 smart fortwo (450_451) - Technical & Service Reference.pdf · p. 95 · Applies to: 450, 451 · AR: AR54.10-P-0003SM, AR68.30-P-1340SM, AR68.30-P-1340CR

Disconnect/connect battery ground line 10.7.07 Shown on model 450.3 as of 19.6.00 1 Ground cable G1 Battery P54.10-2373-04 ~ lul Remove/install I& Danger! Risk of explosion caused by oxyhydrogen No fire, sparks, open flames or smoking. AS54.1 0-Z-0001-01A gas. Risk of poisoning and caustic bums Wear acid-resistant gloves, clothing and caused by swallowing battery acid. Risk of glasses. Only pour battery acid into suitable injury caused by burns to skin and eyes and appropriately marked containers. from battery acid or when handling damaged lead-acid batteries ® Notes on battery AH54.10.P-0001-01A 1 Read out fault memory W Installation: Rectify any faults In the control units. ~AD Connect STAR DIAGNOSIS and read out AD00.00-P-2000-04SM fault memory 2 Remove foot support on passenger side Model 450 except 450.418 AR68.30-P-1340SM Model 450.418 AR68.30-P-1340CR 3 Disconnect ground line (1) from the negative terminal of the battery (G1) 4 Install in the reverse order 5 Code radio 6 Set time Model 450 except 450.418

Remove/install battery

1998-2015 smart fortwo (450_451) - Technical & Service Reference.pdf · p. 96 · Applies to: 450, 451 · AR: AR54.10-P-0003SM

10.7.07 1 Cover 2 Clip 3 Positive line 4 Bracket 5 Venting hose G1 Battery P54.1D-2230-04 ~~ Remove/install 1 Disconnect battery ground line AR54.10-P-0003SM 2 Take off cover (1) 3 Disconnect positive line (3) from battery (G1) 4 Remove cJip (2) of the positive line (3) on the bracket (4) 5 Remove bracket (4) ® Installation: Replace self-locking nut. 6 Detach vent hose (5) from battery (G1) 7 Remove battery (G1) W If the battery (G1) is replaced, the defective battery (G1) must be disposed of correctly. See: t ~OS Dispose of battery OS54.10-P-0001-012 8 Install in the reverse order

Unscrew the boll (9) on tile camshaft

1998-2015 smart fortwo (450_451) - Technical & Service Reference.pdf · p. 109 · Applies to: 450, 451 · AR: AR54.10-P-0003SM

133 Unscrew the boll (9) on tile camshaft Sj)fod<et (10) and remo"" tile camshaft sprod<et (10) 34 Rotate crankshaft lo 30• befOIO TDC 35 Lay the cylinder head gasket In position I W Install new gasket 136 f Piace the cylinder nead (1) in posttlon 37 Tighten up the cyllnder head bolls (11) I L!.J Replace cylinder head bolls (11 ), (I] OIi cylinder head bolls (11) on thread and head contact surface, Insert, tighten in s~s. See:t Tightening procedure 10< cylinder head bolts AR0130-f',5800-01SM (11) 8 •BA01 30-P•1001-01K E3 "BA01 30-P-1002-0lK ~ Sod<et wrench "450589001000 38 Lay the control chain on the camshaft IW Set me crankshaft to TDC. The bore hole sprod<et (10) and place the camshaft on the camshaft follower (10) must be flush sprocket (10) In position wfth the cyifnder head separating surface (arrow). 39 Tighten up boll (9) on the camshaft sprod<et W Counterhold camshaft. (10) 1B 'BA05.20-P-1001-01G ~ Open end wrench ' 450589000100 140 lnsrall the seal lor the camshaft gate I W Install new gasket. 141 Remove engine blod< bracket AR01 OO-P-0201SM 142 Install reat engine mount IW Right rear engine mount AR2210-P,1160$M 143.1 Place the alr-condftloning system bracket (8) Model 450.3/◄ except 450.418, with air In position and tighten up the bolts (7) on the conditM>nlng PhJs (with outside temperature air-conditioning system bracket (8) indicator) (FFO), code 101. !3 "BA83.SS-P-1001-01J 144.1 Allllch refrigerant compressor For code air-conditioning system Plus (with AR83.55-P·5300-02SM oulside temperawre gauge) (FFO) 101. !3 'BA83.5S-1'-1002-01 J 1B "BA83.55-P• 1003-01 J 145 Install the air line (6) and tighten the clamp 146 Fix plug (4) and Hnes onto lhe boost pressure swftehover valve (Y31l6) 147 Plug In the lines on lhe wastegate valve (3) W Note the lnsmllation posftlons of the Ones 148 Plug in the plug (2) on lhe pulsed valve wastegste "'" lnsraiJ 111rbocharger 1,anglne 160.•<u AR09.40.P-6020SP Engine 160.910 AR09.40-P$205O 150.1 Install the combination valve IW Just lor engine 160.920. AR14.3Q.P,7100SM 51 lnsrall catalytic converter AR49.10-P·5500SM 52 Install cylinder head cover AR01 20-P·5014$M 53 lnsrall coolant therm0$1al AR20 10-P,2460SM 54 Connect ground cable to battery AR54.10-P-0003SM

L

Number Ooslgnation Engine Engine 160.910 160.920 8A01,30-P•1001..01K Boll, cylinder head to Stage 1 Nm 21 21 crankcase Stage 2 ... 90 90 Stage 3 ... 90 90 4th stage 4 • 10 10 8A01,30-P- 1002-01K Bott, cyllnder head to Nm 27 tining case cover

Heater/Ventilation operating unit

1998-2015 smart fortwo (450_451) - Technical & Service Reference.pdf · p. 128 · Applies to: 450, 451 · AR: AR54.30-P-6015SM, AR68.20-P-2010SM, AR83.20-P-1850SM

5.9.05 1 Heater/Ventilation operating unit 2 Heater control cable 3 catch 4 Clamp 5 Lever P83,20-2292-04 ld ~ Remove/install 1.1 Disconnect left and right tweeter W Only for vehicles with sound package (2 tweeters, 2 bass reflex boxes and diplexer) (FFO), code C17. See i ~ AZ Retrofit sound system AZ82.62-P--0002SM 2 Remove instrument cluster U.1 Do not disassemble instrument cluster. AR54.30-P-6015SM ill installation: Variants and parameters of instrument cluster do not need to be programmed. !3 Remove cockprt clock AR54 30-P-I 000SM 14 Remove T acllometer AR54.30-P-1 100SM 5 Remove front center consoJe AR68.20-P-2010SM 6 Remove instrument panel AR6810-P-1000SM 7 Remove heater/ventilation operating ITIJ Only remove healer/ventilation operating AR83.20-P-1850SM unit (1) uni! (1) to tile extent that the heater control cable (2) is accessible and can be removed. ill installation: The heater oontrol cable (2) must be adjusted after installing the heater/ ventilation operating unit (1), see: i , Adjust heater/ventilation operating unrt (1) AR83.20-P-1850-01 SM cable 6 Remove catell (3) from heater control cable (2) and unhook heater control cable (2) from heater/Ventilation operating unit (1) 9 Remove Clamp (4) from heater cc,ntrol cable (2) and unhook heater control cable (2) from lever (5) of air distribution box 10 Remove heater oontrol cable (2) W lnsta.lla.Uon: When routing, ensure that heater control cable (2) can move freely and operates correctly. ill Installation: The healer oontrol cable (2) must be routed and secured in such a way that it is protected from damage and vibration. 11 Install in the reve·rse order

Disconnect battery ground cable

1998-2015 smart fortwo (450_451) - Technical & Service Reference.pdf · p. 141 · Applies to: 450, 451 · AR: AR54.30-P-6015SM, AR54.30-P-6015CR, AR68.10-P-1060CR

1 Disconnect battery ground cable AR54.1 0-P-0003SM 2 Remove instrument cluster Models 450.3/4 except 450.418 AR54.30-P-6015SM Model 450.418 AR54.30-P-6015CR 3.1 Remove Jacket tube cover W tor model 450.418. AR68.10-P-1060CR ~ Disconnect connector on driver airbag squib @) Do not damage locking tabs as otherwise (R12/3) the connector will no longer be locked into place. III Installation: Pay attention to the locking of the electrical connector. 5 Move front wheels to straight-ahead position 6 Unscrew bolt as far as the stop using socket ~ •BA46.10-P· 1001-020 wrench bit (2) 7 Detach steering wheel (1) from steering W Repairs to the steering wheel (1) and column airbag are not permitted, therefore in general replace the steering wheel (1). When the steering wheel (1) is removed, do not screw in the mounting screw and do not twist the clock spring contact. ill installation: Mount steering wheel (1) such that the locking pins line up with the mountings on the clock spring contact (arrows). Before installing the steering wheel (1) ensure the straightahead driving position of the front wheels. When installed only tum the steering wheel (1) with the mounting screw tightened in order not to damage the clock spring contact. 8 Install in the reverse order 8 Steering wheel Number Designation Models 450.3/4 BA46.10-P-1001-02O Bolts, steering wheel to steering Nm 30 shaft

Fuse and relay box, as-built configuration

1998-2015 smart fortwo (450_451) - Technical & Service Reference.pdf · p. 262 · Applies to: 450, 451 · AR: PE54.25-P-2000MCC, PE54.25-P-2000MCE, PE54.25-P-2000MCD, PE54.25-P-2000MCF

22.8.07 N10/10 SAM control unit P54.15-3017-03 Fuse and relay box fuse assignment Engine 132. 9 GF54.15-P-1255-20MCC Engine 660.9 GF54.15-P-1255-20MCD Fuse and relay box relay assignment GF54.15-P-1255-21MCA ~PE Wiring diagram electrical center sheet 1 Model 451 .3## /4## ## up to 013644 PE54.25-P-2000MCC Model 451.3## /4## ## as of 013645 PE54.25-P-2000MCE Sheet2 Model 451 .3## /4## ## up to 013644 PE54.25-P-2000MCD Model 451 .3## /4#### as of 013645 PE54.25-P-2000MCF

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

SAM control unit, component description

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 929 · Applies to: 450, 451, 452, 454 · AR: GF54.21-P-4157MCU, GF54.25-P-4300MCU, GF80.20-P-0996MCU, GF80.20-P-0005MCU, PE80.20-P-2000MCU (+4 more)

N10/10 GF54.21-P-4157MCU

Cockpit switch group, component description S6/1 GF54.25-P-4300MCU BASIC KNOWLEDGE > CONTENTS, FUNCTION DESCRIPTION OF CENTRAL LOCKING (CL) - GF80.20-P-0996MCU > MODEL 451.3/4

Central locking (CL), function GF80.20-P-0005MCU

Central locking (CL), location of components GF80.20-P-0005- 01MCU Wiring diagram of central locking (CL) PE80.20-P-2000MCU

Overview of system components for central locking (CL), component description GF80.20-P-9993MCU BASIC KNOWLEDGE > OVERVIEW OF SYSTEM COMPONENTS FOR CENTRAL LOCKING (CL), COMPONENT DESCRIPTION - GF80.20-P-9993MCU > MODEL 451.3/4 Transmitter key, component description

GF80.57-P-6010MCU Instrument cluster, component description A1 GF54.30-P-6000MCU Restraint systems control unit, component description N2/7 GF91.60-P-4048MCU Component description for the SAM control unit N10/10 GF54.21-P-4157MCU Cockpit switch group, component description S6/1 GF54.25-P-4300MCU Contents, function description of central locking (CL)

GF80.20-P-0996MCU BASIC KNOWLEDGE > ANTI-THEFT ALARM SYSTEM (ATA [EDW]), BLOCK DIAGRAM - GF80.50-P-0001-01MCU >

Function

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 940 · Applies to: 450, 451, 452, 454 · AR: PE54.25-P-2050MCU, PE54.25-P-2000MCU, PE54.25-P-2000MCV, GF80.57-P-6010MCU, GF54.30-P-6000MCU (+4 more)

After inserting the transmitter key into the ignition/starter switch (S2/1) the ID code of the transmitter key is received inductively by the transponder coil when circuit 15 is ON. It directly relays the ID code to the SAM control unit for checking. If the ID code is valid, the SAM control unit relays this information via CAN to the ME-SFI control unit which enables the engine control. Moreover, the transmitter key is supplied inductively with power via the transponder coil, so that the vehicle can also be started when the battery in the vehicle transmitter key is discharged. Up to 6 transmitter keys can be used. The key data is managed by the SAM control unit. Status messages from the drive authorization systems are transmitted to the instrument cluster by the SAM control unit. The instrument cluster sends the status message via the multifunction display.

Drive authorization system (DAS), location of components

GF80.57-P-0005- 01MCU Electrical function diagram for electrical center

PE54.25-P-2050MCU Wiring diagram electrical center Sheet 1 PE54.25-P-2000MCU Sheet 2 PE54.25-P-2000MCV

Transmitter key, component description

GF80.57-P-6010MCU

Instrument cluster, component description A1 GF54.30-P-6000MCU

Transponder coil, component description L11 GF80.57-P-6030MCC

ME-SFI [ME] control unit, component description N3/10 GF07.61-P-6000MCU

SAM control unit, component description N10/10 GF54.21-P-4157MCU BASIC KNOWLEDGE > TABLE OF CONTENTS FOR FUNCTION DESCRIPTION OF DRIVE AUTHORIZATION SYSTEM (DAS) - GF80.57-P-0996MCU > Fig 1: Drive Authorization System CAN Communication Diagram Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

wiring harne

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 947 · Applies to: 450, 451, 452, 454 · AR: PE54.00-P-1100MCU, PE80.50-P-2050MCU, OV00.01-P-1901MCU, GF00.19-P-1000MCU, GF00.19-P-2000MCU (+3 more)

) Further wiring diagrams PE54.00-P-1100MCU WIRING DIAGRAMS > ELECTRICAL FUNCTION DIAGRAM FOR ANTI-THEFT ALARM SYSTEM (ATA [EDW]) - PE80.50-P-2050MCU > MODEL 451 Electrical function diagram for anti-theft alarm system (ATA [EDW]) PE80.50-P-2050-99MCU Legend of function schematic for anti-theft alarm (ATA) electrical system PE80.50-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 SPECIAL TOOLS > SPECIAL TOOLS: SMART: CENTRAL LOCKING, CONVENIENCE FEATURE, DRIVE AUTHORIZATION SYSTEM - WS80.00-Z-9999CZ > MODEL all 110 589 03 59 00 Mounting wedge FG 00/01/05/13/18/ 26/54/67/68/72/77/80/82/83/88/91/ Set K WS00.00-P- 0274K

SAM control unit, component description

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 960 · Applies to: 450, 451, 452, 454 · AR: GF54.21-P-4157MCU, GF54.25-P-4300MCU, GF80.20-P-0996MCU, GF80.20-P-0005MCU, PE80.20-P-2000MCU (+4 more)

N10/10 GF54.21-P-4157MCU

Cockpit switch group, component description S6/1 GF54.25-P-4300MCU BASIC KNOWLEDGE > CONTENTS, FUNCTION DESCRIPTION OF CENTRAL LOCKING (CL) - GF80.20-P-0996MCU > MODEL 451.3 /4

Central locking (CL), function GF80.20-P-0005MCU

Central locking (CL), location of components GF80.20-P-0005-01MCU Wiring diagram of central locking (CL) PE80.20-P-2000MCU

Overview of system components for central locking (CL), component description GF80.20-P-9993MCU BASIC KNOWLEDGE > OVERVIEW OF SYSTEM COMPONENTS FOR CENTRAL LOCKING (CL), COMPONENT DESCRIPTION - GF80.20-P-9993MCU > MODEL 451.3 /4 Transmitter key, component description

GF80.57-P-6010MCU Instrument cluster, component description A1 GF54.30-P-6000MCU Restraint systems control unit, component description N2/7 GF91.60-P-4048MCU Component description for the SAM control unit N10/10 GF54.21-P-4157MCU Cockpit switch group, component description S6/1 GF54.25-P-4300MCU Contents, function description of central locking (CL)

GF80.20-P-0996MCU BASIC KNOWLEDGE > ANTI-THEFT ALARM SYSTEM (ATA [EDW]), BLOCK DIAGRAM - GF80.50-P-0001-01MCU >

Anti-theft alarm system (ATA [EDW]), block diagram

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 963 · Applies to: 450, 451, 452, 454 · AR: PE54.25-P-2000MCU, GF80.50-P-0999MCU, GF80.50-P-2001MCU

GF80.50-P-0001- 01MCU

Anti-theft alarm system (ATA), location of components

GF80.50-P-0001- 02MCU

Activate/deactivate anti-theft alarm, function

GF80.50-P- 2001MCU

Anti-theft alarm system trigger, function

GF80.50-P- 2004MCU Electrical function diagram for anti-theft alarm system (ATA [EDW])

PE80.50-P- 2050MCU Wiring diagram electrical center Sheet 1 PE54.25-P-2000MCU BASIC KNOWLEDGE > TABLE OF CONTENTS FOR FUNCTION DESCRIPTION FOR ANTI- THEFT ALARM SYSTEM (ATA) - GF80.50-P-0999MCU > MODEL 451.3 /4 with CODE (V01) Anti-theft alarm system (FFO)

Anti-theft alarm system (ATA [EDW]), function

GF80.50-P- 0001MCU

Anti-theft alarm system (ATA [EDW]), block diagram

GF80.50-P-0001- 01MCU

Anti-theft alarm system (ATA), location of components

GF80.50-P-0001- 02MCU

Activating/deactivating anti-theft alarm system, function

GF80.50-P- 2001MCU

Anti-theft alarm system trigger, function

GF80.50-P- 2004MCU Electrical function diagram for anti-theft alarm system (ATA [EDW])

PE80.50-P- 2050MCU Wiring diagram electrical center Sheet 1 PE54.25-P-2000MCU

Overview of system components for anti-theft alarm system (ATA)

GF80.50-P- 9998MCU BASIC KNOWLEDGE > ACTIVATE/DEACTIVATE ANTI-THEFT ALARM SYSTEM, FUNCTION - GF80.50-P-2001MCU > MODEL 451.3 /4 with CODE (V01) Anti-theft alarm system (FFO) Activate When the lock button on the transmitter key is actuated, it transmits a radio signal to the SAM control unit (N10/10). It checks the access authorization of the transmitter key. If the access authorization is valid, the vehicle is locked via the central locking (CL) and the anti-theft alarm (ATA) is activated 25 s after the vehicle is locked.

0005MCU >

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 971 · Applies to: 450, 451, 452, 454 · AR: PE54.25-P-2050MCU, PE54.25-P-2000MCU, PE54.25-P-2000MCV, GF80.57-P-6010MCU, GF54.30-P-6000MCU (+3 more)

MODEL 451.3 /4 Function After inserting the transmitter key into the ignition/starter switch (S2/1) the ID code of the transmitter key is received inductively by the transponder coil when circuit 15 is ON. It directly relays the ID code to the SAM control unit for checking. If the ID code is valid, the SAM control unit relays this information via CAN to the ME-SFI control unit which enables the engine control. Moreover, the transmitter key is supplied inductively with power via the transponder coil, so that the vehicle can also be started when the battery in the vehicle transmitter key is discharged. Up to 6 transmitter keys can be used. The key data is managed by the SAM control unit. Status messages from the drive authorization systems are transmitted to the instrument cluster by the SAM control unit. The instrument cluster sends the status message via the multifunction display.

Drive authorization system (DAS), location of components

GF80.57-P-0005- 01MCU Electrical function diagram for electrical center

PE54.25-P-2050MCU Wiring diagram electrical center Sheet 1 PE54.25-P-2000MCU Sheet 2 PE54.25-P-2000MCV

Transmitter key, component description

GF80.57-P-6010MCU

Instrument cluster, component description A1 GF54.30-P-6000MCU

Transponder coil, component description L11 GF80.57-P-6030MCC

ME-SFI [ME] control unit, component description N3/10 GF07.61-P-6000MCU

SAM control unit, component description N10/10 GF54.21-P-4157MCU Fig 1: Identifying Drive Authorization System (DAS) Function Diagram Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Removing

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 997 · Applies to: 450, 451, 452, 454 · AR: AR54.10-P-0003MCC, AR88.00-P-1010MCC, AR82.10-P-4730MCC, AR82.10-P-4730MCU, AR82.10-P-5103MCC (+3 more)

1 Disconnect battery ground line

AR54.10-P-0003MCC 2 Remove front CBS

AR88.00-P-1010MCC 3 Remove left front headlamp unit * not for USA AR82.10-P-4730MCC * for USA only AR82.10-P-4730MCU 4 Remove left front fog lamp and right front fog lamp * not for USA AR82.10-P-5103MCC * for USA only AR82.10-P-5103MCU Install

5 Retrofit BRABUS additional headlamp wiring harness Ensure that the wiring harnesses are not damaged by chafing or being trapped otherwise the appropriate wiring harness must be replaced. AN82.10-P-0007- 01MCC Wiring harness repair kit, basic *000589139900 6 Retrofit BRABUS additional headlamp lamp unit Hand drill gotis://G_58.0_00.1 Wet/dry vacuum cleaner gotis://P_00.12_06.0 AN82.10-P-0007- 02MCC 7 Connect ground cable to battery

AR54.10-P-0003MCC 8 Install left front lamp unit * not for USA AR82.10-P-4730MCC * for USA only AR82.10-P-4730MCU 9 Unclip covers of left front fog lamp and right front fog lamp from front CBS and replace with additional headlamp covers

10 Install front CBS

AR88.00-P-1010MCC 11 Perform function test of right additional headlamp (1) and left additional headlamp (2) The daytime running lights must light up with circuit 15 ON.

12 Adjust front fog lamps and daytime running lights * not for USA AP82.10-P-8260MCC * for USA only AP82.10-P-8260MCU

RETROFITTING & CONVERSION > RETROFIT BRABUS LONGITUDINAL MEMBER PANEL

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 998 · Applies to: 450, 451, 452, 454 · AR: AN82.10-P-0008MCC, AR54.10-P-0003MCC, AR68.30-P-4050MCC, AR68.30-P-4050MCU, AR68.40-P-0001MCC

ILLUMINATION - AN82.10-P-0008MCC > MODEL 451.3/4 (except 451.391 /491) Remove

1 Disconnect ground line of battery

AR54.10-P-0003MCC 2 Remove paneling on right A-pillar * not for USA AR68.30-P-4050MCC * for USA only AR68.30-P-4050MCU 3 Remove inside rearview mirror * not for USA AR68.40-P-0001MCC Fig 2: Identifying Wiring Harness Repair Kit, Basic (000 589 13 99 00) Courtesy of MERCEDES-BENZ OF NORTH AMERICA. Fig 1: Identifying Front Interior Lamp, SAM Control Unit, Lamp Units, Wiring Harness And Connector Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Removing

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1017 · Applies to: 450, 451, 452, 454 · AR: AR54.10-P-0003MCC, AR88.00-P-1010MCC

Information on preventing damage to electronic components due to electrostatic discharge

AH54.00-P-0001-01A 1 Disconnect battery ground line

AR54.10-P-0003MCC 2 Remove front CBS (2)

AR88.00-P-1010MCC Fig 1: Identifying Daytime Running Lights Headlamp Components (1 Of 2) Courtesy of MERCEDES-BENZ OF NORTH AMERICA. Fig 2: Identifying Daytime Running Lights Headlamp Components (2 Of 2) Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Disconnect ground line (1)

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1022 · Applies to: 450, 451, 452, 454 · AR: AR54.10-P-0003MCC, AR82.60-P-7502MCC

1 Disconnect ground line (1) from the battery (G1)

AR54.10-P-0003MCC 2 Remove smart radio 9 (A2/1) or smart radio 10 (A2/2) * for USA only AR82.60-P- 7502MCU * not for USA AR82.60-P-7502MCC Install

3 Route subwoofer wiring harness (2) from installation location for subwoofer speaker (4) to radio installation slot behind the instrument panel

4 Attach wiring harness for subwoofer (2) using adhesive tape (6) to air conditioner housing (7) and with cable ties (8) to the vehicle wiring harness Adhesive tape *BR00.45-Z-1071- 02A 5 Screw subwoofer ground line (3) onto battery ground (W10)

6 Connect subwoofer positive line (5) to positive terminal of battery (G1)

7 Fit connector (11) to subwoofer speaker (4)

8 Tighten subwoofer speaker (4) using nut (13) and nut (12) If a breakdown kit is stowed in the passenger side footrest, this has to be stowed in the trunk following installation of the subwoofer speaker (4).

9 Clip tow hook (14) into holder (15)

10 Join connector (18) of radio wiring harness on vehicle side with couplings (10) of subwoofer wiring harness (2)

11 Join connector (9) of subwoofer wiring harness (2) to smart radio 9 (A2/1) or smart radio 10 (A2/2)

12 Install smart radio 9 (A2/1) or smart radio 10 (A2/2) * for USA only AR82.60-P- 7502MCU * not for USA AR82.60-P-7502MCC 13 Connect ground line (1) to battery (G1)

AR54.10-P-0003MCC

MODIFICATION NOTES

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1069 · Applies to: 450, 451, 452, 454 · AR: AR54.21-P-1254MCU, AR54.21-P-1254MCC, AR54.25-P-1000MCC, AR82.10-P-5103MCC

4.11.10 Note on part numbers changed Operation step 2 Check

1 Unclip covers (1) and check whether the wiring harness for front fog lamps (2) is installed The left front fog lamp (E5/1) and right front fog lamp (E5/2) can only be retrofitted when the required wiring harness for front fog lamps (2) is already installed.

2 Using part number (arrow) of SAM control unit (N10/10), check whether this is suitable for front fog lamp retrofitting With one of the following part numbers A 451 540 12 50, A 451 540 19 50, A 451 900 78 00, A 451 906 10 00 retrofitting the front fog lamp is not possible.In this case, SAM control unit (N10/10) must be replaced.See: ↓Remove/install front SAM control unit (N10/10)

• For USA only AR54.21-P-1254MCU
• Not for USA AR54.21-P-1254MCC Remove

3 Detach wiring harness for front fog lamps (2) from brackets (arrows)

4 Remove cockpit switch group (S6/1)

AR54.25-P-1000MCC Install

5 Install left fog lamp (E5/1) and right fog lamp (E5/2) The covers (1) are to be replaced with new front fog lamp covers with code (V07) Front fog lamp (FFO).

• For USA only AR82.10-P- 5103MCU
• Not for USA AR82.10-P-5103MCC 6 Install new cockpit switch group (S6/1) with integrated front fog lamp switch The new cockpit switch group (S6/1) must also be provided with code (V07) Front fog lamp (FFO). AR54.25-P-1000MCC

Remove

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1095 · Applies to: 450, 451, 452, 454 · AR: AR54.10-P-0003MCC, AR68.40-P-0001MCC, AR68.40-P-0001MCU, AR68.30-P-4450MCC, AR68.30-P-4450MCU (+5 more)

1 Disconnect ground line of battery

AR54.10-P-0003MCC 2 Remove inside rearview mirror * not for USA AR68.40-P-0001MCC * for USA only AR68.40-P-0001MCU 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 SAM control unit and place to one side with electrical lines connected
• not for USA AR54.21-P-1254MCC
• for USA only AR54.21-P-1254MCU Install

6 Retrofit inside rearview mirror ambiance illumination (1)

AZ82.20-P-0010- 03MCC Twist drill bit setHand drill gotis://G_58.0_00.1 450589017000 7 Retrofit ambiance illumination wiring harness Vehicles without retrofit BRABUS twin headlamps or without daytime running light headlamps. AZ82.20-P-0010- 01MCC Wiring harness repair kit, basic 000589139900 Vehicles with retrofit BRABUS twin headlamps or with daytime running light headlamps AZ82.20-P-0010- 01MCD Wiring harness repair kit, basic 000589139900 Hot-air gun 450589016300 Wiring harness repair kit *452589029900 8 Clip left tweeter into instrument panel On vehicle with code (C17) Sound package (2 tweeters, 2 bass reflex boxes and diplexers) (FFO) or with code (C54) Sound AR82 62 P 1000MCC

Install

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1134 · Applies to: 450, 451, 452, 454 · AR: AR54.30-P-6080MCF, AZ54.30-P-0001MCD

6 Retrofit communication 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 AZ82.60-P-0021- 02MCC 7 Install Bluetooth microphone (B25/3) and route electrical wiring harness for Bluetooth microphone (2) in front passenger footwell Cordless drill/driver gotis://G_58.0_01.1 AZ82.70-P-0005- 08MCD 8 Retrofit display (A15p5) Vehicles up to 30.8.10 On vehicles without code (V31) Cockpit clock and tachometer package, the display (A15p5) can be attached to the left or right of the additional instruments bracket in accordance with the customer request. AZ82.70-P-0005- 10MCC Vehicles as of 31.8.10 AZ82.70-P-0005- 10MCD 9.1 Install additional instruments On vehicles as of 31.8.10 with code (V31)Cockpit and tachometer package AR54.30-P-6080MCF 9.2 Retrofit additional instruments On vehicles as of 31.8.10 without code (V31) Cockpit and tachometer package AZ54.30-P-0001MCD 10 Retrofit electrical wiring harness for Bluetooth module (1), electrical wiring harness for Bluetooth microphone (2) and electrical wiring harness for display (3) Ensure that electrical wiring harness for Bluetooth module (1), electrical wiring harness for Bluetooth microphone (2) and electrical wiring harness for display (3) are not damaged by chafing, pinching or crushing as otherwise these must be replaced.

Vehicles up to 30.8.10without code (41Z) AUX jack orwithout code (C15) Navigation unit (DFO/ FFO) orwithout code (C60) Portable smart navigation system orwithout code (C54) Sound system 2Vehicles as of 31.8.10 AZ82.70-P-0005- 02MCC

description

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1168 · Applies to: 450, 451, 452, 454 · AR: GF54.21-P-4157MCU, GF80.57-P-6010MCU, GF54.21-P-6000MCC, GF82.10-P-2017MCU

Rain/light sensor Component description for the SAM control unit N10/10 GF54.21-P-4157MCU Combination switch, component description S4 GF82.30-P- 5000MCU BASIC KNOWLEDGE > AMBIENT ILLUMINATION ACTUATION FUNCTION - GF82.10-P- 2013MCU > MODEL 451.3/4 with CODE (V54) Rain/light sensor The ambient illumination actuation is used to illuminate the surroundings of the vehicle when the vehicle is being locked and unlocked. The exterior lights of the vehicle are switched on for approx. 12 s. Function requirements Transmitter key removed Locking button or release button pressed on transmitter key Rain sensor / light sensor (B38) signals darkness Function The following components are actuated by the SAM control unit (N10/10) to illuminate the vehicle surroundings when locking and unlocking: Left low beam (E1e2) Right low beam (E2e2) Left parking light (E6/13) Right parking lamp (E6/14) Left taillight (E3e2) Right taillight (E4e2) Left license plate lamp (E19/1) Right license plate lamp (E19/2) When the vehicle is unlocked, the front interior lamp (E15/4) is also actuated by the SAM control unit to illuminate the interior of the vehicle. Transmitter key, component description

GF80.57-P-6010MCU Rain/light sensor, component description B38 GF54.21-P-6000MCC Lamp unit, component description E1, E2 GF82.10-P-2017MCU BASIC KNOWLEDGE > LAMP UNIT, COMPONENT DESCRIPTION - GF82.10-P-2017MCU > MODEL 451.3/4

MODEL 451.3/4

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1170 · Applies to: 450, 451, 452, 454 · AR: GF54.30-P-6000MCU, GF82.10-P-2017MCU, GF54.21-P-4157MCU, GF82.30-P-5000MCU

standing lights actuation Function requirements Combination switch in position 1 or Circ.15 off and combination switch in position 2 Function The switch position of the combination switch is read in by the SAM control unit, which directly actuates the following components: Left and right standing light Left and right taillight Left and right license plate lamps Lights on warning If the standing light function is active, the driver door is open and circuit 15 is off, the instrument cluster emits an acoustic lamp warning. Instrument cluster, component description A1 GF54.30-P-6000MCU Lamp unit, component description E1, E2 GF82.10-P-2017MCU Component description for the SAM control unit N10/10 GF54.21-P-4157MCU Combination switch, component description S4 GF82.30-P-5000MCU Fig 1: Standing Light Actuation Function Chart Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

automatically activated. The current speed is determined by the ESP control unit and relayed via the CAN to

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1173 · Applies to: 450, 451, 452, 454 · AR: GF54.30-P-6000MCU, GF82.10-P-2017MCU, GF91.60-P-4048MCU, GF54.21-P-4157MCU, GF42.45-P-5118MCU (+3 more)

the SAM control unit, which activates the hazard warning flasher function. The hazard warning flasher function is deactivated automatically after starting off as soon as the vehicle speed reaches 6 mph, or manually using the hazard warning flasher switch. Hazard warning flasher in event of crash In the event of a crash the request is transmitted by the restraint systems control unit via the CAN to the SAM control unit, which activates the hazard warning flasher function. The hazard warning flasher function is switched off by operating the hazard warning flasher switch in the cockpit switch group. In the event of a crash, the doors are also unlocked and the fuel pump with fuel level sensor (M3/3) is switched off. Hazard warning flasher feedback Visual feedback of the active hazard warning flasher function is provided by the indicator lamp in the hazard warning flasher switch and the indicator lamps in the instrument cluster, which are only active if circuit 15 is on, however. Acoustic feedback is also output on the speaker in the instrument cluster in the form of a turn signal sound indicator. If one of the turn signal lamps fails, the flashing frequency of the turn signal indicator lamps, the flashing frequency of the other turn signal lamps and the frequency of the turn signal sound indicator do not change. Instrument cluster, component description A1 GF54.30-P-6000MCU Lamp unit, component description E1, E2 GF82.10-P-2017MCU Restraint systems control unit, component description N2/7 GF91.60-P-4048MCU Component description for the SAM control unit N10/10 GF54.21-P-4157MCU ESP control unit, component description N47-5 GF42.45-P-5118MCU Combination switch, component description S4 GF82.30-P-5000MCU Cockpit switch group, component description S6/1 GF54.25-P-4300MCU BASIC KNOWLEDGE > STOP LAMP ACTUATION, FUNCTION - GF82.10-P-3010MCU > MODEL 451.3/4

Function

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1174 · Applies to: 450, 451, 452, 454 · AR: GF54.21-P-4157MCU, GF42.45-P-5118MCU, GF42.10-P-2010MCC, GF82.10-P-9998MCU, GF80.57-P-6010MCU (+1 more)

When the service brake is operated, the request is directly relayed to the ESP control unit and the SAM control unit via the brake light switch. The status of the brake light switch is also put onto the CAN by the ESP control unit. The SAM control unit actuates the following components: Left brake/turn signal light Right brake/turn signal light Center high-mounted stop lamp Component description for the SAM control unit N10/10 GF54.21-P-4157MCU ESP control unit, component description N47-5 GF42.45-P-5118MCU Brake light switch, component description S9/1 GF42.10-P-2010MCC BASIC KNOWLEDGE > OVERVIEW OF EXTERIOR LIGHTS SYSTEM COMPONENTS - GF82.10-P-9998MCU > MODEL 451.3/4 Transmitter key, component description

GF80.57-P-6010MCU Instrument cluster, component description A1 GF54.30-P-6000MCU Fig 1: Stop Lamp Actuation Function Chart Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Rain/light sensor, component

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1175 · Applies to: 450, 451, 452, 454 · AR: GF54.21-P-6000MCC, GF91.60-P-4048MCU, GF54.21-P-4157MCU, GF42.45-P-5118MCU, GF42.10-P-2010MCC (+1 more)

description B38For vehicles with code (V54) Rain/light sensor GF54.21-P-6000MCC Lamp unit, component description E1, E2 GF82.10-P- 2017MCU Restraint systems control unit, component description N2/7 GF91.60-P-4048MCU Component description for the SAM control unit N10/10 GF54.21-P-4157MCU ESP control unit, component description N47-5 GF42.45-P-5118MCU Combination switch, component description S4 GF82.30-P- 5000MCU Cockpit witch group, component description S6/1 GF54 25 P 4300MCU Brake light switch, component description S9/1 GF42.10-P-2010MCC Contents, function description of exterior lighting

GF82.10-P- 0999MCU BASIC KNOWLEDGE > INTERIOR ILLUMINATION (IBL), LOCATION OF COMPONENTS - GF82.20-P-0002-01MCC > BASIC KNOWLEDGE > INTERIOR ILLUMINATION (IBL) FUNCTION - GF82.20-P-0002MCC

MODEL 451.3/4 Fig 1: Locating Interior Illumination Components Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Right additional turn signal lamp

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1181 · Applies to: 450, 451, 452, 454 · AR: PE54.35-P-2000MCU, GF80.57-P-6010MCU, GF54.21-P-4157MCU, GF82.25-P-0990MCU, GF82.25-P-0012MCU (+1 more)

Actuation takes place directly via the SAM control unit. Canceling the panic alarm The panic alarm is canceled by pressing the panic alarm button again or by Term. 15 On.

Panic alarm, location of components

GF82.25-P-0012- 01MCU Wiring diagram for signaling system

PE54.35-P-2000MCU

Transmitter key, component description

GF80.57-P-6010MCU

Component description for the SAM control unit N10/10 GF54.21-P-4157MCU BASIC KNOWLEDGE > TABLE OF CONTENTS, PANIC ALARM FUNCTION DESCRIPTION - GF82.25-P-0990MCU > MODEL 451.3/4

Panic alarm function GF82.25-P-0012MCU

Panic alarm, location of components GF82.25-P-0012- 01MCU Wiring diagram for signaling system PE54.35-P-2000MCU

Overview of system components for panic alarm, component description GF82.25-P-9992MCU BASIC KNOWLEDGE > OVERVIEW OF SYSTEM COMPONENTS FOR PANIC ALARM, COMPONENT DESCRIPTION - GF82.25-P-9992MCU > MODEL 451.3/4 Transmitter key, component description

GF80.57-P-6010MCU Component description for the SAM control unit N10/10 GF54.21-P-4157MCU Table of contents, panic alarm function description

GF82.25-P-0990MCU BASIC KNOWLEDGE > WIPER SYSTEM (WSA), LOCATION OF COMPONENTS - GF82.30- P-0003-01MCU >

Intermittent wipe

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1185 · Applies to: 450, 451, 452, 454 · AR: GF54.30-P-6000MCU, GF54.21-P-6000MCC

Wiping When the wiper switch is moved upwards, the wiper can be activated at 2 different speeds. In position 1 wiping takes place at slow speed, and in position 2 wiping takes place at fast speed. The request is read in by the SAM control unit, which actuates the wiper motor directly. The next slower wiping speed is selected if the vehicle is stationary. The wiper is actuated in accordance with the request at speeds of 5 km/h and above. Switching back to position 0 deactivates the wiper function. If deactivation takes place during a wiper operation, the wiper motor is not switched off until the park position has been reached. Park position feedback is provided by a signal contact integrated in the wiper motor. Wiping with washer fluid The window washer fluid pump is actuated directly by pulling the wiper switch backwards and holding it in position. Actuation takes place for as long as the switch is held in this position. At the same time, the SAM control unit actuates the wiper motor with a time delay of approx. 0.2 s. The wiper motor is actuated for an additional 3 wipe cycles at the end of the request. If the wipe request was made by tapping the wiper switch, only one wipe cycle is performed. Intermittent wipe (in vehicles without code (V54) Rain/light sensor) Moving the wiper switch downwards requests the intermittent wipe function. The wiping interval is speed- dependent and decreases as the speed increases. The following wiping intervals are implemented by the SAM control unit: Wipe every 15 s at v = 0 km/h Wipe every 12 s at v > 5 km/h Wipe every 7 s at v > 50 km/h Wipe every 5 s at v > 75 km/h Intermittent wipe (in vehicles with code (V54) Rain/ light sensor) Moving the wiper switch downwards requests the intermittent wipe function. The wiping interval depends on the wetness of the windshield. The rain/light sensor determines the wetness of the windshield and relays the activation request to the SAM control unit via LIN B. This actuates the wiper motor accordingly. The rail/light sensor does not issue an activation request if a wipe request with washer fluid is active. The status of the wiper motor is transferred to the rain/light sensor by the SAM control unit via LIN B. 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,

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1186 · Applies to: 450, 451, 452, 454 · AR: GF54.21-P-4157MCU

component description M5/1 GF82.35-P- 5000MCC Wiper motor, component description M6/1 GF82.30-P- 5010MCC SAM control unit, component description N10/10 GF54.21-P-4157MCU Wiper switch, component description S4/4 GF82.30-P- 5002MCC BASIC KNOWLEDGE > COMBINATION SWITCH, COMPONENT DESCRIPTION - GF82.30- P-5000MCU > MODEL 451.3/4 Shown on vehicle with code (V54) Rain/light sensor Location The combination switch is mounted on the steering column. Task The combination switch is used to read in the following requests: High beam Low beam Headlight flasher Turn signals Auto on/off driving lights (with code (V54) Rain/light sensor) Daytime running lights activation (with code (K06) Daytime running lights) Daytime running lights deactivation (with code (K06) Daytime running lights) Headlamp range adjustment The headlamp range adjustment is actuated directly at the left headlamp range adjustment motor (E1m1) Fig 1: View Of Combination Switch Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Instrument cluster, component

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1190 · Applies to: 450, 451, 452, 454 · AR: GF54.30-P-6000MCU, GF54.21-P-6000MCC, GF82.30-P-5020MCC, GF54.21-P-4157MCU, GF26.19-P-1010MCU (+1 more)

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 The windshield washer fluid pump is located at the left in the direction of travel on the windshield washer fluid reservoir. Task Fig 1: Identifying Windshield Washer Fluid Pump & Reservoir Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Further wiring diagrams

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1203 · Applies to: 450, 451, 452, 454 · AR: PE54.00-P-1100MCU

PE54.00-P-1100MCU WIRING DIAGRAMS > WIRING DIAGRAM RADIO - PE82.60-P-2000-97MCE > Code: Designation: Position: A1 Instrument cluster 15L A2/20 Radio antenna 39L A2/3 smart Entry radio 12A A2/3 smart Entry radio 20A A2/3 smart Entry radio 28A A2/3 mart Entry radio 36A A2/3 smart Entry radio 43A H4/10 Right front speaker 25L H4/29 Subwoofer 32L H4/33 Left tweeter 37L H4/34 Right tweeter 35L H4/9 Left front speaker 27L N10/10 SAM control unit 19L N10/10f15 Fuse 15 20L N10/10f20 Fuse 20 18L N15/6 Automated manual transmission control unit 5L N47-5 ESP control unit 10L S12 Parking brake indicator switch 8L U1 Valid for {{USA}} 3E U12 Valid for left-hand drive vehicles 32D U13 Valid for right-hand drive vehicles 32D U50 Valid for {{USA}} {{Japan}} 21D U58 Valid for ECE 7E U863 Valid for external audio source 40C U90 Valid for Sound System 29A U97 Not valid for model 451.334/380/480 13K U97 Not valid for model 451.334/380/480 17K U98 Valid for model 451.334/380/480 13L U98 Valid for model 451.334/380/480 17K

Removing

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1248 · Applies to: 450, 451, 452, 454 · AR: AR54.10-P-0003MCC, AR88.00-P-1010MCC, AR82.10-P-4730MCC, AR82.10-P-4730MCU, AR82.10-P-5103MCC (+3 more)

1 Disconnect battery ground line

AR54.10-P-0003MCC 2 Remove front CBS

AR88.00-P-1010MCC 3 Remove left front headlamp unit * not for USA AR82.10-P-4730MCC * for USA only AR82.10-P-4730MCU 4 Remove left front fog lamp and right front fog lamp * not for USA AR82.10-P-5103MCC * for USA only AR82.10-P-5103MCU Install

5 Retrofit BRABUS additional headlamp wiring harness Ensure that the wiring harnesses are not damaged by chafing or being trapped otherwise the appropriate wiring harness must be replaced. AN82.10-P-0007- 01MCC Wiring harness repair kit, basic *000589139900 6 Retrofit BRABUS additional headlamp lamp unit Hand drillWet/dry vacuum cleaner AN82.10-P-0007- 02MCC 7 Connect ground cable to battery

AR54.10-P-0003MCC 8 Install left front lamp unit * not for USA AR82.10-P-4730MCC * for USA only AR82.10-P-4730MCU 9 Unclip covers of left front fog lamp and right front fog lamp from front CBS and replace with additional headlamp covers

10 Install front CBS

AR88.00-P-1010MCC 11 Perform function test of right additional headlamp (1) and left additional headlamp (2) The daytime running lights must light up with circuit 15 ON.

12 Adjust front fog lamps and daytime running lights * not for USA AP82.10-P-8260MCC * for USA only AP82.10-P-8260MCU

Remove

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1259 · Applies to: 450, 451, 452, 454 · AR: AR54.10-P-0003MCC, AR68.30-P-4050MCC, AR68.30-P-4050MCU, AR68.40-P-0001MCC, AR68.40-P-0001MCU (+5 more)

1 Disconnect ground line of battery

AR54.10-P-0003MCC 2 Remove paneling on right A-pillar * not for USA AR68.30-P-4050MCC * for USA only AR68.30-P-4050MCU 3 Remove inside rearview mirror * not for USA AR68.40-P-0001MCC * for USA only AR68.40-P-0001MCU 4 Remove front roof frame paneling Model 451.3 not for USA AR68.30-P-4450MCC Model 451.3 for USA only AR68.30-P-4450MCU Model 451.4 not for USA AR68.30-P-4450MCO Model 451.4 for USA only AR68.30-P-4450MCV 5 Remove longitudinal member panels

AR88.80-P-6000MCC 6 Remove front CBS

AR88.00-P-1010MCC 7 Remove left front headlamp unit * not for USA AR82.10-P-4730MCC * for USA only AR82.10-P-4730MCU Install

Fig 1: Identifying Front Interior Lamp, SAM Control Unit, Lamp Units, Wiring Harness And Connector Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Remove

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1372 · Applies to: 450, 451, 452, 454 · AR: AR54.10-P-0003MCC, AR68.40-P-0001MCC, AR68.40-P-0001MCU, AR68.30-P-4450MCC, AR68.30-P-4450MCU (+5 more)

1 Disconnect ground line of battery

AR54.10-P-0003MCC 2 Remove inside rearview mirror * not for USA AR68.40-P-0001MCC * for USA only AR68.40-P-0001MCU 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 SAM control unit and place to one side with electrical lines connected
• not for USA AR54.21-P-1254MCC
• for USA only AR54.21-P-1254MCU Install

6 Retrofit inside rearview mirror ambiance illumination (1)

AZ82.20-P-0010- 03MCC Twist drill bit setHand drill 450589017000 7 Retrofit ambiance illumination wiring harness Vehicles without retrofit BRABUS twin headlamps or without daytime running light headlamps. AZ82.20-P-0010- 01MCC Wiring harness repair kit, basic 000589139900 Vehicles with retrofit BRABUS twin headlamps or with daytime running light headlamps AZ82.20-P-0010- 01MCD Wiring harness repair kit, basic 000589139900 Hot-air gun 450589016300 Wiring harness repair kit *452589029900 8 Clip left tweeter into instrument panel On vehicles with code (C17) Sound package AR82.62-P-1000MCC

Instrument cluster, component

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1445 · Applies to: 450, 451, 452, 454 · AR: GF54.30-P-6000MCU, GF54.21-P-6000MCC, GF54.21-P-4157MCU, GF82.30-P-5000MCU, GF80.57-P-6010MCU (+1 more)

description A1 GF54.30-P-6000MCU Rain/light sensor, component description B38For vehicles with code (V54) Rain/light sensor GF54.21-P-6000MCC Component description for the SAM control unit N10/10 GF54.21-P-4157MCU Combination switch, component description S4 GF82.30-P-5000MCU BASIC KNOWLEDGE > AMBIENT ILLUMINATION ACTUATION FUNCTION - GF82.10-P- 2013MCU > MODEL 451.3 /4 with CODE (V54) Rain/light sensor The ambient illumination actuation i u ed to illuminate the urrounding of the vehicle when the vehicle i being locked and unlocked. The exterior lights of the vehicle are switched on for approx. 12 s. Function requirements Transmitter key removed Locking button or release button pressed on transmitter key Rain sensor / light sensor (B38) signals darkness Function The following components are actuated by the SAM control unit (N10/10) to illuminate the vehicle surroundings when locking and unlocking: Left low beam (E1e2) Right low beam (E2e2) Left parking light (E6/13) Right parking lamp (E6/14) Left taillight (E3e2) Right taillight (E4e2) Left license plate lamp (E19/1) Right license plate lamp (E19/2) When the vehicle is unlocked, the front interior lamp (E15/4) is also actuated by the SAM control unit to illuminate the interior of the vehicle. Transmitter key, component description

GF80.57-P-6010MCU Rain/light sensor, component description B38 GF54.21-P-6000MCC Lamp unit, component description E1, E2 GF82.10-P-2017MCU BASIC KNOWLEDGE > LAMP UNIT, COMPONENT DESCRIPTION - GF82.10-P-2017MCU >

MODEL 451.3 /4

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1447 · Applies to: 450, 451, 452, 454 · AR: GF54.30-P-6000MCU, GF82.10-P-2017MCU, GF54.21-P-4157MCU

MODEL 451.3 /4 standing lights actuation Function requirements Combination switch in position 1 or Circ.15 off and combination switch in position 2 Function The switch position of the combination switch is read in by the SAM control unit, which directly actuates the following components: Left and right standing light Left and right taillight Left and right license plate lamps Lights on warning If the standing light function is active, the driver door is open and circuit 15 is off, the instrument cluster emits an acoustic lamp warning. Instrument cluster, component description A1 GF54.30-P-6000MCU Lamp unit, component description E1, E2 GF82.10-P-2017MCU Component description for the SAM control N10/10 GF54.21-P-4157MCU Fig 1: Standing Light Actuation Function Chart Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

signal lamps.

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1450 · Applies to: 450, 451, 452, 454 · AR: GF54.30-P-6000MCU, GF82.10-P-2017MCU, GF91.60-P-4048MCU, GF54.21-P-4157MCU, GF42.45-P-5118MCU (+3 more)

Hazard warning flasher actuation as a result of rapid deceleration If the vehicle is braked from a speed of more than 35 mph to a standstill, the hazard warning system is automatically activated. The current speed is determined by the ESP control unit and relayed via the CAN to the SAM control unit, which activates the hazard warning flasher function. The hazard warning flasher function is deactivated automatically after starting off as soon as the vehicle speed reaches 6 mph, or manually using the hazard warning flasher switch. Hazard warning flasher in event of crash In the event of a crash the request is transmitted by the restraint systems control unit via the CAN to the SAM control unit, which activates the hazard warning flasher function. The hazard warning flasher function is switched off by operating the hazard warning flasher switch in the cockpit switch group. In the event of a crash, the doors are also unlocked and the fuel pump with fuel level sensor (M3/3) is switched off. Hazard warning flasher feedback Visual feedback of the active hazard warning flasher function is provided by the indicator lamp in the hazard warning flasher switch and the indicator lamps in the instrument cluster, which are only active if circuit 15 is on, however. Acoustic feedback is also output on the speaker in the instrument cluster in the form of a turn signal sound indicator. If one of the turn signal lamps fails, the flashing frequency of the turn signal indicator lamps, the flashing frequency of the other turn signal lamps and the frequency of the turn signal sound indicator do not change. Instrument cluster, component description A1 GF54.30-P-6000MCU Lamp unit, component description E1, E2 GF82.10-P-2017MCU Restraint systems control unit, component description N2/7 GF91.60-P-4048MCU Component description for the SAM control unit N10/10 GF54.21-P-4157MCU ESP control unit, component description N47-5 GF42.45-P-5118MCU Combination switch, component description S4 GF82.30-P-5000MCU Cockpit switch group, component description S6/1 GF54.25-P-4300MCU BASIC KNOWLEDGE > STOP LAMP ACTUATION, FUNCTION - GF82.10-P-3010MCU > MODEL 451.3 /4

Function

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1451 · Applies to: 450, 451, 452, 454 · AR: GF54.21-P-4157MCU, GF42.45-P-5118MCU, GF42.10-P-2010MCC, GF82.10-P-9998MCU, GF80.57-P-6010MCU (+1 more)

When the service brake is operated, the request is directly relayed to the ESP control unit and the SAM control unit via the brake light switch. The status of the brake light switch is also put onto the CAN by the ESP control unit. The SAM control unit actuates the following components: Left brake/turn signal light Right brake/turn signal light Center high-mounted stop lamp Component description for the SAM control unit N10/10 GF54.21-P-4157MCU ESP control unit, component description N47-5 GF42.45-P-5118MCU Brake light switch, component description S9/1 GF42.10-P-2010MCC BASIC KNOWLEDGE > OVERVIEW OF EXTERIOR LIGHTS SYSTEM COMPONENTS - GF82.10-P-9998MCU > MODEL 451.3 /4 Transmitter key, component description

GF80.57-P-6010MCU Instrument cluster, component description A1 GF54.30-P-6000MCU Fig 1: Stop Lamp Actuation Function Chart Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Rain/light sensor, component

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1452 · Applies to: 450, 451, 452, 454 · AR: GF54.21-P-6000MCC, GF91.60-P-4048MCU, GF54.21-P-4157MCU, GF42.45-P-5118MCU, GF54.25-P-4300MCU (+2 more)

description B38For vehicles with code (V54) Rain/light sensor GF54.21-P-6000MCC Lamp unit, component description E1, E2 GF82.10-P- 2017MCU Restraint systems control unit, component description N2/7 GF91.60-P-4048MCU Component description for the SAM control unit N10/10 GF54.21-P-4157MCU ESP control unit, component description N47-5 GF42.45-P-5118MCU Combination switch, component description S4 GF82.30-P- 5000MCU Cockpit switch group, component description S6/1 GF54.25-P-4300MCU Brake light switch, component description S9/1 GF42.10-P-2010MCC Contents, function description of exterior lighting

GF82.10-P- 0999MCU BASIC KNOWLEDGE > INTERIOR ILLUMINATION (IBL), LOCATION OF COMPONENTS - GF82.20-P-0002-01MCC > BASIC KNOWLEDGE > INTERIOR ILLUMINATION (IBL) FUNCTION - GF82.20-P-0002MCC

MODEL 451.3 /4 Fig 1: Locating Interior Illumination Components Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Right brake/turn signal light

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1458 · Applies to: 450, 451, 452, 454 · AR: PE54.35-P-2000MCU, GF80.57-P-6010MCU, GF54.21-P-4157MCU, GF82.25-P-0990MCU, GF82.25-P-0012MCU (+1 more)

Left additional turn signal lamp Right additional turn signal lamp Actuation takes place directly via the SAM control unit. Canceling the panic alarm The panic alarm is canceled by pressing the panic alarm button again or by Term. 15 On.

Panic alarm, location of components

GF82.25-P-0012- 01MCU Wiring diagram for signaling system

PE54.35-P-2000MCU

Transmitter key, component description

GF80.57-P-6010MCU

Component description for the SAM control unit N10/10 GF54.21-P-4157MCU BASIC KNOWLEDGE > TABLE OF CONTENTS, PANIC ALARM FUNCTION DESCRIPTION - GF82.25-P-0990MCU > MODEL 451.3 /4

Panic alarm function GF82.25-P-0012MCU

Panic alarm, location of component GF82 25 P 0012 01MCU Wiring diagram for signaling system PE54.35-P-2000MCU

Overview of system components for panic alarm, component description GF82.25-P-9992MCU BASIC KNOWLEDGE > OVERVIEW OF SYSTEM COMPONENTS FOR PANIC ALARM, COMPONENT DESCRIPTION - GF82.25-P-9992MCU > MODEL 451.3 /4 Transmitter key, component description

GF80.57-P-6010MCU Component description for the SAM control unit N10/10 GF54.21-P-4157MCU Table of contents, panic alarm function description

GF82.25-P-0990MCU BASIC KNOWLEDGE > WIPER SYSTEM (WSA), LOCATION OF COMPONENTS - GF82.30- P-0003-01MCU >

Intermittent wiping

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1462 · Applies to: 450, 451, 452, 454 · AR: GF54.30-P-6000MCU, GF82.35-P-5000MCC, GF82.30-P-5020MCC, GF54.21-P-4157MCU, GF26.19-P-1010MCU (+1 more)

Rear window intermittent wiping is activated by pushing the wiper switch forwards past the detent point. The request is read in by the SAM control unit, which actuates the wiper motor directly. Wiper arm park position feedback is provided by the signal contact that is integrated in the rear-end door wiper motor. Wiping with washer fluid The window washer fluid pump is actuated directly by pushing the wiper switch forwards and holding it in position. At the same time, the SAM control unit actuates the rear-end door wiper motor with a time delay of approx. 0.2 s. Three additional wiping cycles are performed after the wiper switch has been released. Automatic wiping when reverse gear is engaged If the windshield wiper system is active and the outside temperature is above 5°C, the rear-end door wiper motor is actuated automatically by the SAM control unit for one wiping cycle when the reverse gear is engaged. Instrument cluster, component description A1 GF54.30-P-6000MCU Windshield washer fluid pump, component description M5/1 GF82.35-P-5000MCC 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 BASIC KNOWLEDGE > WINDSHIELD WIPER (WS) SYSTEM, FUNCTION - GF82.30-P- 2300MCU > MODEL 451.3 /4

The window washer fluid pump is actuated directly by pulling the wiper switch backwards and holding it in

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1464 · Applies to: 450, 451, 452, 454 · AR: GF54.30-P-6000MCU, GF54.21-P-6000MCC, GF82.35-P-5000MCC, GF82.30-P-5010MCC, GF54.21-P-4157MCU (+1 more)

position. Actuation takes place for as long as the switch is held in this position. At the same time, the SAM control unit actuates the wiper motor with a time delay of approx. 0.2 s. The wiper motor is actuated for an additional 3 wipe cycles at the end of the request. If the wipe request was made by tapping the wiper switch, only one wipe cycle is performed. Intermittent wipe (in vehicles without code (V54) Rain/light sensor) Moving the wiper switch downwards requests the intermittent wipe function. The wiping interval is speed- dependent and decreases as the speed increases. The following wiping intervals are implemented by the SAM control unit: Wipe every 15 s at v = 0 km/h Wipe every 12 s at v > 5 km/h Wipe every 7 s at v > 50 km/h Wipe every 5 s at v > 75 km/h Intermittent wipe (in vehicles with code (V54) Rain/ light sensor) Moving the wiper switch downwards requests the intermittent wipe function. The wiping interval depends on the wetness of the windshield. The rain/light sensor determines the wetness of the windshield and relays the activation request to the SAM control unit via LIN B. This actuates the wiper motor accordingly. The rail/light sensor does not issue an activation request if a wipe request with washer fluid is active. The status of the wiper motor is transferred to the rain/light sensor by the SAM control unit via LIN B. 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 SAM control unit, component description N10/10 GF54.21-P-4157MCU Wiper switch, component description S4/4 GF82.30-P-5002MCC BASIC KNOWLEDGE > COMBINATION SWITCH, COMPONENT DESCRIPTION - GF82.30- P-5000MCU > MODEL 451.3 /4 Shown on vehicle with code (V54) Rain/light sensor

connector sleeves (line

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1494 · Applies to: 450, 451, 452, 454 · AR: PE54.00-P-1100MCU

connectors in wiring harness) PE54.00-P-1100MCU

Further wiring diagrams PE54.00-P-1100MCU WIRING DIAGRAMS > LEGEND FOR WIRING DIAGRAM OF WINDSHIELD WIPER - PE82.30-P-2000-60MCU > MODEL 451 Code Designation Coordinates B38 Rain sensor/light sensor 22L M5/1 Windshield washer fluid pump 2L M6/1 Wiper motor 13L M6/4 Tailgate wiper motor 18L N10/10 SAM control unit 4A12A19A N10/10f2 Fuse 2 13A N10/10f12 Fuse 12 22A N10/10f17 Fuse 17 17A N10/10f20 Fuse 20 6A S4/4 Right wiper switch 7L U606 Valid for all except convertibles 5E15A W6 Ground (left wheelhouse in luggage compartment) 19C W9 Ground (left front, at lamp unit) 5E22E W43 Ground (outside left fire wall) 14E X18/19 Trunk lid connector 16G18E Z3/44 Instrument cluster - radio circuit 15 (fused) connector sleeve 6E Z6/20 Trunk lid ground connector sleeve 18G Z45 ATA [EDW] sensor supply circuit 30 connector sleeve 22E Z78 Cockpit LIN connector sleeve 21E

o yhydrogen ga

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1534 · Applies to: 450, 451, 452, 454 · AR: AR54.00-Z-9451CA

Risk of poisoning and caustic burns caused by swallowing battery acid. Risk of injury caused by burns to skin and eyes from battery acid or when handling damaged lead-acid batteries flame or moking Wear acid-resistant gloves, clothing and glasses. Only pour battery acid into suitable and appropriately marked containers. 01A Notes on battery

AH54.10-P-0001- 01A 1 Remove footrest on the passenger-side Left-hand drive vehicles AR68.30-P- 1340MCC Right-hand drive vehicles AR68.30-P- 1340MCE 2 Unscrew nut (3)

3 Unclip the retaining clip (2) on the bracket (1) and remove bracket (1) On right-hand drive vehicles the bracket (1) is only raised until the stop plugs (4) are accessible.

Checking

4 Remove stop plugs (4) on the battery (G1) and check fluid level in the battery (G1) In each cell the fluid must reach the web let into the filler opening (arrow).

Correct

5 Correct the battery acid level with distilled water Refill distilled water up to the web (arrow).

6 Screw in plug (4)

Install

7 Insert bracket (1) and clip in retaining clip (2) at the bracket (1)

8 Tighten nut (3) Installation: Replace self-locking nut (3).

9 Install footrest on the passenger- side Left-hand drive vehicles AR68.30-P- 1340MCC Right-hand drive vehicles AR68.30-P- 1340MCE TESTING & REPAIR > TESTING AND REPAIR WORK: SMART: ELECTRICAL SYSTEM, EQUIPMENT AND INSTRUMENTS - AR54.00-Z-9451CA > MODEL 451 Perform initial startup of control MODEL 451.3/4 AR54.21-P-

unit

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1535 · Applies to: 450, 451, 452, 454 · AR: AR54.21-P-0012MCC, AR54.10-P-1160MEV, AR54.10-P-0005MCE, AR54.10-P-5106MEV, AR54.10-P-0002MCC (+2 more)

0018MCE Charge battery MODEL 451.3/4 AR54.10-P- 1130MCC Check condition of battery MODEL 451.3/4 AR54.10-P- 1129MCC Check quiescent current consumption MODEL 451.3/4 AR54.10-P- 1030MCE Control unit flashing MODEL 451.3/4 AR54.21-P-0012MCC Control unit flashing MODEL 451.3/4 AR54.21-P- 0012MCU Disable/enable high-voltage system MODEL 451.391/491 with ENGINE 780.009 AR54.10-P-1160MEV Disconnect/connect battery ground line MODEL 451.3/4 AR54.10-P- 0003MCC Disconnecting and connecting electrical cables from battery MODEL 451.3/4 AR54.18-P- 0002MCC Remove/install additional instruments MODEL 451.3/4 up to 30.8.10 with CODE (V31) Cockpit clock and tachometer package AR54.30-P- 6080MCC Remove/install additional instruments MODEL 451.3/4 as of 31.8.10 with CODE (V31) Cockpit clock and tachometer package AR54.30-P- 6080MCF Remove/install battery MODEL 451.3## /4## 1# with CODE (LHD) Left-hand drive vehicle AR54.10-P- 0005MCC Remove/install battery MODEL 451.3## /4## 2# with CODE (RHD) Right-hand drive vehicle AR54.10-P-0005MCE Remove/install battery charger of high-voltage battery MODEL 451.391/491 with ENGINE 780.009 AR54.10-P-5106MEV Remove/install battery sensor MODEL 451.334 /380 /480 AR54.10-P-0002MCC Remove/install charger feed socket MODEL 451.391/491 with ENGINE 780.009 AR54.10-P-5109MEV Remove/install cockpit switch group MODEL 451.3/4 AR54.25-P- 1000MCC Remove/install combination switch MODEL 451.3/4 AR54.25-P- 2800MCC Remove/install cruise control switch MODEL 451.3/4 with CODE (V27) Cruise control/Temposet AR54.25-P- 2803MCC Remove/install electric motor charge line to 12-volt battery MODEL 451.391/491 with ENGINE 780.009 AR54.10-P-5107MEV Remove/install electric power soft top relay MODEL 451.4 AR54.15-P- 1000MCO

Remove/in tall electrical line from

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1536 · Applies to: 450, 451, 452, 454 · AR: AR54.10-P-0100MCC, AR54.10-P-5108MEV, AR54.35-P-1555MCC, AR54.21-P-1254MCC, AR54.10-P-1140MEV (+5 more)

battery to starter/alternator MODEL 451 3 (e cept 451 380 /391)MODEL 451.4 (except 451.480 /491) AR54 18 P 0006MCC Remove/install electrical line from battery to starter/alternator MODEL 451.3/4 (except 451.391 /491) AR54.18-P- 0006MCU Remove/install electrical lines from the on-board electrical system battery to the starter-alternator control unit MODEL 451.334 /380 /480 AR54.10-P-0100MCC Remove/install external socket communications control unit MODEL 451.391/491 with ENGINE 780.009 AR54.10-P-5108MEV Remove/install fanfare horns MODEL 451.3/4 with CODE (V55) Twin-tone horn AR54.35-P-1555MCC Remove/install front SAM control unit MODEL 451.3/4 AR54.21-P-1254MCC Remove/install front SAM control unit MODEL 451.3/4 AR54.21-P- 1254MCU Remove/install high-voltage battery MODEL 451.391/ 491 AR54.10-P-1140MEV Remove/install high-voltage distributor MODEL 451.391/491 with ENGINE 780.009 AR54.10-P-1400MEV Remove/install high-voltage line between high-voltage distributor and PTC heater booster MODEL 451.391/491 with ENGINE 780.009 AR54.10-P-1402MEV Remove/install ignition/starter switch lock cylinder MODEL 451.3/4 AR54.25-P-1030MCC Remove/install ignition/starter switch lock cylinder MODEL 451.3/4 AR54.25-P- 1030MCU Remove/install inertia switch MODEL 451.391/491 with ENGINE 780.009 AR54.10-P-0050MEV Remove/install instrument cluster MODEL 451.3/4 AR54.30-P-6015MCC Remove/install instrument cluster MODEL 451.3/4 AR54.30-P- 6015MCU Remove/install main fuse of positive line MODEL 451.3/4 (except 451.391 /491) Starter/alternator prefuse AR54.15-P- 0051MCU Remove/install main fuse of positive line MODEL 451.3/4 Main fuse of SAM [signal acquisition and actuation module] control unit AR54.15-P- 0051MCV Remove/install main fuse of positive line MODEL 451.391/491 with ENGINE 780.009 AR54.15-P-0051MEV Remove/install main fuse of secondary air injection pump MODEL 451.3/4 (except 451.391 /491) AR54.15-P- 0050MCU Remove/install outside temperature MODEL 451.3/4 AR54.30-P-

indicator en or

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1537 · Applies to: 450, 451, 452, 454 · AR: AR54.35-P-1556MCC, AR54.21-P-0300MCC, AR54.25-P-4000MCC, AR54.18-P-2000MCC, AR54.10-P-1171MEV

6341MCC Remove/install signaling horn MODEL 451.3/4 except CODE (V55) Twin-tone horn AR54.35-P-1556MCC Remove/install signaling horn MODEL 451.3/4 AR54.35-P- 1556MCU Remove/install starter-alternator control unit MODEL 451.334 /380 /480 AR54.21-P-0300MCC Remove/install start/stop switch MODEL 451.334 /380 /480 AR54.25-P-4000MCC Remove/install three-phase line from starter-alternator to control unit MODEL 451.334 /380 /480 AR54.18-P-2000MCC Remove/install wiper switch MODEL 451.3/4 AR54.25-P- 0003MCC Remove/install 12 Volt socket MODEL 451.3/4 AR54.10-P- 1000MCC Replace desiccant cartridge of high-voltage battery MODEL 451.391/ 491 AR54.10-P-1171MEV Replace SAM fuses MODEL 451.3/4 AR54.15-P- 2001MCC Treatment of battery if vehicle taken out of service MODEL 451.3/4 AR54.10-P- 0006MCC TESTING & REPAIR > DISCONNECT/CONNECT BATTERY GROUND LINE - AR54.10-P- 0003MCC > MODEL 451.3/4 MODIFICATION NOTES 10.6.10 Check condition of battery and enable high voltage system added Steps 1 and 2 22.9.10 Information on required radio code on vehicles with code (527) High- Line radio, added

Fig 1: Identifying Ground Cable And Battery Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

high-voltage system

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1539 · Applies to: 450, 451, 452, 454 · AR: AR54.10-P-0005MCC

2 high-voltage system conducted on the high voltage vehicle electric system. P- 1160MEV 3 Connect STAR DIAGNOSIS and read out fault memory Installation: If necessary, delete fault memory. AD00.00- P-2000- 04MCC 4 Remove foot support on passenger side Left-hand drive vehicles AR68.30- P- 1340MCC Right-hand drive vehicles AR68.30- P- 1340MCE 5 Disconnect ground line (1) from the negative terminal of the battery (G1)

6 Install in the reverse order

7 Set time in the instrument cluster and on the additional instrument

8 Enter radio code On vehicles with code (527) High-Line radio

9 Adapt audio settings On vehicles with code (527) High-Line radio

Notes on audio settings

AH82.60- P-0002- 01MCC TESTING & REPAIR > REMOVE/INSTALL BATTERY - AR54.10-P-0005MCC > MODEL 451.3## /4## 1# with CODE (LHD) Left-hand drive vehicle Fig 1: Identifying Battery Components Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Remove/install

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1540 · Applies to: 450, 451, 452, 454 · AR: AR54.10-P-0006MCC

1 Disconnect battery ground line

AR54.10- P- 0003MCC 2 Take off cover (1)

3 Disconnect positive line (3) from battery (G1)

4 Remove clip (2) of the positive line (3) on the bracket (4) Installation: Replace clip (2).

5 Remove nut (6) and take off bracket (4) Installation: Replace self-locking nut (6)

6 Detach vent hose (5) from battery (G1)

7 Remove battery (G1) If the battery (G1) is replaced, the defective battery (G1) must be disposed of correctly.See: ↓

Dispose of battery OS54.10- P-0001- 01Z 8 Install in the reverse order

TESTING & REPAIR > TREATMENT OF BATTERY IF VEHICLE TAKEN OUT OF SERVICE - AR54.10-P-0006MCC > MODEL 451.3/4 Risk of explosion caused by oxyhydrogen gas. Risk of poisoning and caustic burns caused by swallowing battery acid. Risk of injury caused by burns to skin and eyes from battery acid or when handling damaged lead-acid batteries No fire, sparks, open flames or smoking. Wear acid-resistant gloves, clothing and glasses. Only pour battery acid into suitable and appropriately marked containers. AS54.10-Z-0001-01A Notes on battery

AH54.10-P-0001- 01A 1 Check battery condition, charge battery if necessary On no account leave battery in discharged state otherwise sulfate deposits will form on the plates. Plates with sulfate deposits indicate initial damage to the battery and result in premature failure. AR54.10-P- 1129MCC

Disconnect battery ground line

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1541 · Applies to: 450, 451, 452, 454 · AR: AR54.10-P-1000MCC

2 Disconnect battery ground line This prevents any battery discharge through closed-circuit accessories (e.g. clock). AR54.10-P- 0003MCC 3 Charge battery Every 4 weeks. On no account leave battery in discharged state otherwise sulfate deposits will form on the plates. Plates with sulfate deposits indicate initial damage to the battery and result in premature failure. AR54.10-P- 1130MCC TESTING & REPAIR > REMOVE/INSTALL 12 VOLT SOCKET - AR54.10-P-1000MCC > MODEL 451.3 /3

Remove/install

1 Insert pliers (2) into interior socket (X58/1) and turn until pliers (2) arrest 169589003700 2 Carefully pull out metal insert in interior socket (X58/1) 169589003700 Fig 1: Identifying 12 Volt Socket Components Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

consumers and control units

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1545 · Applies to: 450, 451, 452, 454 · AR: GF54.15-P-0800MCC, AR68.30-P-1340MCC, AR68.30-P-1340MCE

protected by the fuse in question must be removed one after the other. * not for USAFuse and relay box, as-built configuration GF54.15-P-0800MCC * for USA onlyFuse and relay box, as-built configuration GF54.15-P- 0800MCU 15 Remove multimeter without breaking the circuit and attach ground line (1) to negative terminal

Install

16 Install foot support on passenger side Left-hand drive vehicles AR68.30-P-1340MCC Right-hand drive vehicles AR68.30-P-1340MCE 17 Open vehicle using central locking system

18 Unlock rotary tumblers on doors and liftgate

19 Connect STAR DIAGNOSIS then read-out and erase diagnostic trouble code memory

AD00.00-P-2000- 04MCC TESTING & REPAIR > CHECK BATTERY - AR54.10-P-1129-01A > Risk of explosion caused by oxyhydrogen gas. Risk of poisoning and caustic burns caused by swallowing battery acid. Risk of injury caused by burns to skin and eyes from battery acid or when handling damaged lead-acid batteries No fire, sparks, open flames or smoking. Wear acid-resistant gloves, clothing and glasses. Only pour battery acid into suitable and appropriately marked containers. TEST AND ADJUSTMENT VALUES FOR THE BATTERY Number Designation 12 AH 30 AH 35 Ah 46 AH BE54.10-P-1002- 01A Cold test current as per EN A 170 540 520 420 TEST AND ADJUSTMENT VALUES FOR THE BATTERY Number Designation 60 Ah VRLA 60 AH 62 AH BE54.10-P-1002- 01A Cold test current as per EN A 680 510 480 TEST AND ADJUSTMENT VALUES FOR THE BATTERY Designation

12. Perform additional menu-assisted function (e.g. starting several times and switching on consumers).

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1552 · Applies to: 450, 451, 452, 454 · AR: AR54.10-P-1129MCC

Only in taxi test mode if displayed in menu. TESTING & REPAIR > CHECK CONDITION OF BATTERY - AR54.10-P-1129MCC > MODEL 451.3/4 Remove

Risk of explosion caused by oxyhydrogen gas. Risk of poisoning and caustic burns caused by swallowing battery acid. Risk of injury caused by burns to skin and eyes from battery acid or when handling damaged lead-acid batteries No fire, sparks, open flames or smoking. Wear acid- resistant gloves, clothing and glasses. Only pour battery acid into suitable and appropriately marked containers. AS54.10-Z-0001- 01A Notes on battery

AH54.10-P-0001- 01A Notes on AGM battery Model 451.334/380/480 AH54.10-P-0002- 01MCC 1 Connect STAR DIAGNOSIS and read out fault memory Erase fault memory and eliminate repairing faults. AD00.00-P-2000- 04MCC 2 Remove foot support on passenger side Left-hand drive vehicles AR68.30-P- 1340MCC Right-hand drive vehicles AR68.30-P- 1340MCE Check

3 Visual inspection of battery for external leaks The battery must be replaced in the event of

Fig 9: Display Selection Of Test Mode - Before Charge And After Charge Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

leak See ↓Remove/in tall

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1553 · Applies to: 450, 451, 452, 454 · AR: AR54.10-P-1130MCC

battery

Left-hand drive vehicles AR54.10-P- 0005MCC

Right-hand drive vehicles AR54.10-P- 0005MCE Dispose of battery

OS54.10-P-0001- 01Z 4 Check fluid level and correct if necessary Except model 451.334/380/480, Not when the battery has been replaced. AP54.10-P- 5410MCC 5 Check battery

AR54.10-P-1129- 01A Cold test currentMidtronics battery tester gotis://E_15/54_02.0 *BE54.10-P-1002- 01A Install

6 Install foot support on passenger side Left-hand drive vehicles AR68.30-P- 1340MCC Right-hand drive vehicles AR68.30-P- 1340MCE TEST AND ADJUSTMENT VALUES FOR THE BATTERY Number Designation 42 AH 60 Ah VRLA 61 AH 62 AH BE54.10-P-1002- 01A Cold test current as per EN A 340 680 540 480 TESTING & REPAIR > CHARGE BATTERY - AR54.10-P-1130MCC > MODEL 451.3/4

Remove/install

Risk of explosion caused by oxyhydrogen gas. Risk of poisoning and caustic burns caused by swallowing battery acid. Risk of injury caused by burns to skin and eyes from battery acid or when handling damaged lead-acid batteries No fire, sparks, open flames or smoking. Wear acid- resistant gloves, clothing and glasses. Only pour battery acid into suitable and appropriately marked containers. AS54.10- Z-0001- 01A Notes on battery

AH54.10- P-0001- 01A Notes on AGM battery Model 451.334/380/480 AH54.10- P-0002-

01MCC

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1554 · Applies to: 450, 451, 452, 454 · AR: AR54.15-P-0050MCU

1 Remove battery Pull vent hose out of the hole in the battery recess.

Left-hand drive vehicles AR54.10- P- 0005MCC Right-hand drive vehicles AR54.10- P- 0005MCE 2 Charge battery according to operating instructions of charger With a battery which is not low-maintenance remove the stop plugs, check acid level and correct if necessary.

3 Install in the reverse order

TESTING & REPAIR > REMOVE/INSTALL MAIN FUSE OF SECONDARY AIR INJECTION PUMP - AR54.15-P-0050MCU > MODEL 451.3/4 (except 451.391 /491)

Remove/install

1 Remove vertical strut paneling (1) AR68.00-P- 1500MCC 2 Pull fuse of secondary air injection pump (F36) out of fuse holder (2)

3 Install in the reverse order

TESTING & REPAIR > REMOVE/INSTALL MAIN FUSE OF POSITIVE LINE - AR54.15-P- 0051MCU > MODEL 451.3/4 (except 451.391 /491) Starter/alternator prefuse Fig 1: Locating Secondary Air Injection Pump Fuse Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Remove/install

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1555 · Applies to: 450, 451, 452, 454 · AR: AR54.10-P-0003MCC

1 Disconnect battery ground line

AR54.10-P-0003MCC 2 Unclip top cover (2) from bottom cover (1) and remove top cover (2) as well as bottom cover (1)

3 Unscrew nuts (3) and remove starter/alternator fuse (F58) Replace self- locking nuts (3).

4 Install in the reverse order

TESTING & REPAIR > REMOVE/INSTALL MAIN FUSE OF POSITIVE LINE - AR54.15-P- 0051MCV > MODEL 451.3/4 Main fuse of SAM [signal acquisition and actuation module] control unit Fig 1: Locating Starter/Alternator Fuse Courtesy of MERCEDES-BENZ OF NORTH AMERICA. Fig 1: Locating SAM Prefuse Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Remove/install

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1556 · Applies to: 450, 451, 452, 454 · AR: AR54.10-P-0003MCC, AR54.15-P-1000MCO, AR54.15-P-2001MCC

1 Disconnect battery ground line

AR54.10-P-0003MCC 2 Invert casing (1) backwards

3 Unlock cover (2) in the marked area (arrow) and fold up

4 Unscrew nuts (3) and remove SAM prefuse (F91) Replace self- locking nuts (3).

5 Install in the reverse order

TESTING & REPAIR > REMOVE/INSTALL ELECTRIC POWER SOFT TOP RELAY - AR54.15-P-1000MCO > 30.11.06 MODEL 451.4

Remove/install 1 Remove cover (1) on the left luggage compartment trim 2 Guide the wiring harness of the soft top (2) out of the body opening and expose 3 Push back the foam casing (3) on the open soft top relay (K66/1) or on the close soft top relay (K66/2) 4 Detach open soft top relay (K66/1) or close soft top relay (K66/2) 5 Install in the reverse order TESTING & REPAIR > REPLACE SAM FUSES - AR54.15-P-2001MCC > MODEL 451.3/4 Fig 1: Identifying Electric Power Soft Top Relay Components Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Turn off ignition

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1557 · Applies to: 450, 451, 452, 454 · AR: AR54.18-P-0002MCC

1 Turn off ignition 2 Adjust left seat to the rear

Replace standard fuses (2) or mini fuses (3) 3 Pull out damaged standard fuse (2) or mini fuse (3) and replace

Replace maxi fuses (4) 4 Unclip SAM control unit (N10/10) in the rear area (arrow) and fold down forwards 5 Unscrew bolts (1) and carefully lower SAM control unit (N10/10) downwards until the maxi fuses (4) are accessible 6 Remove damaged maxi fuse (4) and replace 7 Position SAM control unit (N10/10) on crossmember under instrument panel and fasten in place using the bolts (1) 8 Clip in SAM control unit (N10/10) in correct area (arrow) TESTING & REPAIR > DISCONNECTING AND CONNECTING ELECTRICAL CABLES FROM BATTERY - AR54.18-P-0002MCC > MODEL 451.3/4 Fig 1: Identifying Bolts, Standard Fuses, SAM Control Unit, Mini And Maxi Fuses Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Remove/install

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1558 · Applies to: 450, 451, 452, 454 · AR: AR54.10-P-0003MCC, AR54.18-P-0006MCU

1 Disconnect battery ground line AR54.10-P-0003MCC 2 Take off cover (1)

3 Disconnect positive line (2) from battery (G1)

4 Install in the reverse order

TESTING & REPAIR > REMOVE/INSTALL ELECTRICAL LINE FROM BATTERY TO STARTER/ALTERNATOR - AR54.18-P-0006MCU > MODEL 451.3/4 (except 451.391 /491) Fig 1: Identifying Battery Components Courtesy of MERCEDES-BENZ OF NORTH AMERICA. Fig 1: Identifying Electrical Line Components Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

10. Apply axial solder connector to the lines and wrap repaired area round with fabric tape.

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1565 · Applies to: 450, 451, 452, 454 · AR: AR54.21-P-0012MCU

The axial solder connectors must not lie directly above one another. TESTING & REPAIR > CONTROL UNIT FLASHING - AR54.21-P-0012MCU > MODEL 451.3/4

Flashing

1 Connect STAR DIAGNOSIS

Connect STAR DIAGNOSIS and read out fault memory

AD00.00-P-2000- 04MCC 2 Enter vehicle identification number inDiagnosis Assistance system and open main menu with "Button F2"

Fig 6: Identifying Correct And Incorrect Position Of Soldered Point Courtesy of MERCEDES-BENZ OF NORTH AMERICA. Fig 7: Wrapping Repaired Area Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Turn off ignition

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1571 · Applies to: 450, 451, 452, 454 · AR: AR54.25-P-0003MCC

1 Turn off ignition

2 Disconnect ground line of battery

AR54.10- P- 0003MCC 3 Adjust the left front seat to the rear

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

6 Unscrew bolts (1) and carefully lower the SAM control unit (N10/10) until the electrical connectors (3) are accessible

7 Unclip cover (5) on SAM control unit (N10/10)

8 Unscrew nut (6) and remove positive battery cable (4) If the nut (6) is detached from the positive battery cable (4), it must be replaced by a collar nut.

9 Remove additional fuses (2) with connector on SAM control unit (N10/10) The number of additional fuses may vary (2) depending on the vehicle model and equipment.Remove additional fuses (2) with connector as the connectors are coded.

10 Separate electrical connectors (3) and electrical connector (arrow B)

11 Remove SAM control unit (N10/10) from the vehicle

12 Install in the reverse order

13 Flash the SAM control unit (N10/10) When replacing the SAM control unit (N10/10). AR54.21- P- 0012MCU TESTING & REPAIR > REMOVE/INSTALL WIPER SWITCH - AR54.25-P-0003MCC > MODEL 451.3/4

Remove/install

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1573 · Applies to: 450, 451, 452, 454 · AR: AR54.25-P-1030MCU

1 Loosen cockpit switch group (S6/1) using assembly wedge (3) and remove until the electrical connector (1) is accessible *110589035900 2 Separate electrical connector (1) and remove cockpit switch group (S6/1) Check retaining clips (2), replace is necessary.

3 Install in the reverse order

TESTING & REPAIR > REMOVE/INSTALL IGNITION/STARTER SWITCH LOCK CYLINDER - AR54.25-P-1030MCU > MODEL 451.3/4 Fig 1: Removing/Installing Cockpit Switch Group Courtesy of MERCEDES-BENZ OF NORTH AMERICA. Fig 2: Identifying Wedge Tool (110 589 03 59 00) Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

electronic selector lever

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1575 · Applies to: 450, 451, 452, 454 · AR: AR54.25-P-2800MCC

module (N15/5) control unit. 7 Remove transmitter key (3)

8 Install transponder coil

AR80.35-P- 4515MCU TESTING & REPAIR > REMOVE/INSTALL COMBINATION SWITCH - AR54.25-P-2800MCC > MODEL 451.3/4 Remove/install

1 Remove steering column cover

AR68.30- P- 2000MCC 2 Unclip catch hook (3) on combination switch (S4)

3 Lift combination switch (S4) upwards from the guides (4) and remove to one side until the electrical connector (1) is accessible

4 Detach electrical connector (1) on the combination switch (S4) and remove combination switch (S4)

5 Release cap (2) by applying suitable knife to combination switch (S4) and remove When replacing the combination switch (S4).

6 Install in the reverse order

7 Conduct function test of combination switch (S4)

TESTING & REPAIR > REMOVE/INSTALL CRUISE CONTROL SWITCH - AR54.25-P- 2803MCC > MODEL 451.3/4 with CODE (V27) Cruise control/Temposet Fig 1: Identifying Combination Switch Components Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Remove/install

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1576 · Applies to: 450, 451, 452, 454 · AR: AR54.30-P-6015MCU

1 Remove front cover (1) from steering wheel spokes

AR46.10- P- 0105MCC 2 Unclip electrical wiring harness (3) from mounting (arrows) of front cover (1)

3 Unscrew left and right bolts (2) Installation: Carefully tighten bolts (2) and make sure that the front covering (1) is not damaged as otherwise it will have to be replaced.

4 Remove left cruise control switch (S112s4) and right cruise control switch (S112s5) The left cruise control switch (S112s4) and right cruise control switch (S112s5) are designed as a unit and they cannot be separated. Installation: Check left cruise control switch (S112s4) and right cruise control switch (S112s5) are correctly seated in the front cover (1).

5 Install in the reverse order

TESTING & REPAIR > REMOVE/INSTALL INSTRUMENT CLUSTER - AR54.30-P-6015MCU

Fig 1: Identifying Cruise Control Switch Components Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Remove covering (2) of additional

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1580 · Applies to: 450, 451, 452, 454 · AR: AR54.30-P-6341MCC, AR54.35-P-1556MCU

2 Remove covering (2) of additional instruments (A15)

3 Remove bolt (3) of additional instruments (A15)

4 Adjust driver seat to the rear

5 Unhook wiring harness for additional instruments (1) from holders (arrows) at bottom of instrument panel upper section The wiring harness additional instrument (1) can be accessed from the driver footwell.

6 Detach the additional instrument connector (A15x1) located in the installation opening of the IC (A1)

7 Remove additional instruments (A15)

8 Install in the reverse order

9 Set clock of additional instruments (A15)

TESTING & REPAIR > REMOVE/INSTALL OUTSIDE TEMPERATURE INDICATOR SENSOR - AR54.30-P-6341MCC > MODEL 451.3/4

Remove/install 1 Turn the steering to the left 2 Pull the outside temperature display temperature sensor (B14) out of the front module (2) 3 Unplug electrical connector (1) and remove outside temperature indicator temperature sensor (B14). 4 Install in the reverse order TESTING & REPAIR > REMOVE/INSTALL SIGNALING HORN - AR54.35-P-1556MCU > MODEL 451.3/4 Fig 1: Identifying Outside Temperature Indicator Sensor Components Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Remove

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1587 · Applies to: 450, 451, 452, 454 · AR: AR54.30-P-6015MCC, AR54.30-P-6015MCU

1 Adjust driver seat to the rear

2 Remove instrument cluster (A1) * not for USA AR54.30-P-6015MCC * for USA only AR54.30-P-6015MCU Fig 2: Removing Cover Courtesy of MERCEDES-BENZ OF NORTH AMERICA. Fig 3: Identifying Additional Instruments Components Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

AZ54.30-P-0001MCD "

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1589 · Applies to: 450, 451, 452, 454 · AR: AZ54.30-P-0001MCD, BA54.00-Z-9999CZ, BE54.00-Z-9999CZ

note under field organization text for design group 54. PARTS ORDERING NOTES Part no. Designation Quantity DG 54 (see EPC) Additional instruments 1 DG 54 (see EPC) Screw 1 DG 54 (see EPC) Cover 1 TORQUE SPECIFICATIONS > TIGHTENING TORQUES: SMART: ELECTRICAL SYSTEM, EQUIPMENT AND INSTRUMENTS - BA54.00-Z-9999CZ > MODEL all Battery MODEL 454.0, 451.391 /491 BA54.10-P-1000-01E Battery MODEL 451.391/491 BA54.10-P-1000-01H Control units/base module MODEL 450, 451.334 /380 /480 BA54.21-P-1000-01B Signaling system MODEL 450.3 BA54.35-P-1000-01B Wiring harness MODEL 450.3 /4 BA54.18-P-1000-02A TEST & ADJUSTMENT VALUES > TEST AND ADJUSTMENT VALUES: SMART: ELECTRICAL SYSTEM, EQUIPMENT AND INSTRUMENTS - BE54.00-Z-9999CZ > MODEL all Test values for battery, voltage supply MODEL all BE54.10-P-1000-01A TEST & ADJUSTMENT VALUES > TEST VALUES FOR BATTERY, VOLTAGE SUPPLY - Fig 4: Identifying Snap-Release Tool (452 589 01 63 00) Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fuse and relay box fuse

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1592 · Applies to: 450, 451, 452, 454 · AR: PE54.25-P-2000MCU, PE54.25-P-2000MCV, PE54.25-P-2000MCW

assignment Engine 132.9 GF54.15-P-1255- 20MCU Engine 780.0 GF54.15-P-1255- 20MEV

Fuse and relay box relay assignment Model 451.3/4 (except 451.391/491) GF54.15-P-1255- 21MCU Model 451.391/491 GF54.15-P-1255- 21MEV

Fuse assignment of fuses in the interior on passenger side Model 451.3/4 (except 451.391/491) GF54.15-P-1256- 24MCU Model 451.391/491 GF54.15-P-1256- 24MEV Wiring diagram electrical center Sheet 1 PE54.25-P-2000MCU Sheet 2 PE54.25-P-2000MCV Sheet 3 PE54.25-P-2000MCW BASIC KNOWLEDGE > FUSE AND RELAY BOX FUSE ASSIGNMENT - GF54.15-P-1255- 20MCU > Fuse and relay assignment of SAM control unit (N10/10) (front side) Fig 1: Locating SAM Control Unit Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fuse

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1598 · Applies to: 450, 451, 452, 454 · AR: GF54.21-P-4157MCU

Clamping device Wire Identification Fused function Rating in amperes (A) F36 30 4.0 RD Secondary air injection pump (M33) 50 F58 30 16.0 RD Starter (M1), alternator (G2) 200 F91 30 16.0 RD SAM control unit (N10/10) 100 BASIC KNOWLEDGE > COMPONENT DESCRIPTION FOR THE SAM CONTROL UNIT - GF54.21-P-4157MCU > MODEL 451.3/4 Location The SAM control unit is located in the footwell on the passenger side. Task The SAM control unit supplies control units and electrical components with voltage via limit switches. The individual control units and electrical components are fused via the fuse and relay blocks contained in the SAM control unit. Fig 1: Locating Secondary Air Injection Pump Fuse, Starter/Alternator Fuse And SAM Prefuse Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Shown on LHD model

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1604 · Applies to: 450, 451, 452, 454 · AR: GF54.25-P-4300MCU

Location The data link connector is located in the footwell on the driver-side. Task The data link connector is the interface for the connection of STAR DIAGNOSIS to the Controller Area Network (data bus/CAN bus) (CAN). BASIC KNOWLEDGE > COCKPIT SWITCH GROUP, COMPONENT DESCRIPTION - GF54.25-P-4300MCU > MODEL 451.3/4 Fig 1: Locating Data Link Connector Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Shown on code (K07) Speedometer (miles)

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1606 · Applies to: 450, 451, 452, 454 · AR: GF54.30-P-0002MCU

BASIC KNOWLEDGE > INSTRUMENT CLUSTER (IC), FUNCTION - GF54.30-P-0002MCU > MODEL 451.3/4 Fig 1: Identifying Instrument Cluster And Warning Switch Systems Displays Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Circuit 58 ON

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1609 · Applies to: 450, 451, 452, 454 · AR: PE54.30-P-2001MCU, PE54.30-P-2051MCU, GF54.30-P-2001MCU

The instrument cluster illumination is switched on and the current contents of the multifunction display are displayed. After circuit 58 OFF the instrument cluster remains active for another 30 s. By pressing a button on the instrument cluster. The multifunction display illumination is switched on for 30 s and the current content displayed. Acoustic signals The following acoustic signals are produced and output via the sound signal generator integrated in the instrument cluster: Turn signal indicator Warning and information signals Turn signal indicator The turn signal indicator is always accompanied by an acoustic clicking sound generated in the same rhythm. The acoustic turn signal indicator is actuated with: Turn signaling (at double frequency if a turn signal lamp fails) Hazard warning flashing Warning and information signals A warning or signal tone is emitted: When the standing lights are switched on, the transmitter key removed and the driver door open (light warning) When the driver door is opened while the engine is running and a gear engaged (door warning) As confirmation that the daytime running lights have been activated or deactivated (with code (K06) Daytime running lights) If at circuit 15 On and with the doors closed, the driver seat belt buckle restraint systems switch (S68/3) is not closed (seat belt reminder warning) If the driver seat belt buckle restraint systems switch or the front passenger seat belt buckle restraint systems switch (S68/4) is not closed when the front passenger seat is occupied and the vehicle speed is v > 25 km/h (seat belt reminder warning) After circuit 15 Off and after removing the transmitter key, when the vehicle was locked using the emergency function Actuation in each instance is via the CAN by the SAM control unit.

Instrument cluster (IC [K]), display instrument and warning systems GF54.30-P-0002-08MCU Wiring diagram large instrument (instrument cluster) PE54.30-P-2001MCU Electrical function schematic for instrument cluster (KI) PE54.30-P-2051MCU

Indicator/warning messages, function GF54.30-P-2001MCU

Display speed, function

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1610 · Applies to: 450, 451, 452, 454 · AR: GF54.30-P-3025MCU, GF54.30-P-3041MCU, GF54.30-P-0997MCU, GF54.30-P-0002MCU, PE54.30-P-2001MCU (+3 more)

GF54.30-P-3025MCU

Display operating conditions, function GF54.30-P-3041MCU BASIC KNOWLEDGE > TABLE OF CONTENTS FOR FUNCTION DESCRIPTION OF INSTRUMENT CLUSTER (IC) - GF54.30-P-0997MCU > MODEL 451.3/4

Instrument cluster (IC), function GF54.30-P-0002MCU

Instrument cluster (IC [K]), display instrument and warning systems GF54.30-P-0002-08MCU Wiring diagram large instrument (instrument cluster) PE54.30-P-2001MCU Electrical function schematic for instrument cluster (KI) PE54.30-P-2051MCU

Indicator/warning messages, function GF54.30-P-2001MCU

Display speed, function GF54.30-P-3025MCU

Display operating conditions, function GF54.30-P-3041MCU

Overview of system components, instrument cluster (IC) component description GF54.30-P-9996MCU BASIC KNOWLEDGE > INDICATOR/WARNING MESSAGES, FUNCTION - GF54.30-P- 2001MCU > MODEL 451.3/4 Shown on code (K07) Speedometer (miles)

Vehicle speed display

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1616 · Applies to: 450, 451, 452, 454 · AR: GF54.30-P-6000MCU, GF42.45-P-5118MCU

The electronic speedometer is used to display vehicle speed. The speedometer is driven by a stepper motor. Measuring the vehicle speed The instrument cluster receives from the ESP control unit (N47-5) the wheel speeds required for the computation of vehicle speed via the Controller Area Network (data bus/CAN bus) (CAN). The tire size is taken into account when calculating the speed. Coding takes place using STAR DIAGNOSIS. Assessment of wheel speed signals: The wheel speed signals are compared against each other and thus checked in terms of plausibility. If there are no significant deviations, the vehicle speed is calculated from the rotational speed of the left front wheel. If the individual wheel speed signals vary substantially, the speed signals may be faulty or the vehicle may be cornering. If, by comparing the wheel speeds on both sides of the vehicle, the instrument cluster determines that the car is cornering, the vehicle speed is calculated from the mean value of the front wheel speeds. If the comparisons indicate one or more faulty wheel speed signals, the vehicle speed is then calculated on the basis of highest wheel speed. This also applies if an error message is received instead of a wheel speed signal. The travel distance is determined as for the vehicle speed. Instrument cluster, component description A1 GF54.30-P-6000MCU ESP control unit, component description N47-5 GF42.45-P-5118MCU BASIC KNOWLEDGE > DISPLAY OPERATING CONDITIONS, FUNCTION - GF54.30-P- Fig 1: Identifying Instrument Cluster And Electronic Speedometer Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Determining and displaying the vehicle speed

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1621 · Applies to: 450, 451, 452, 454 · AR: GF54.30-P-6000MCU, GF83.57-P-4000MCC, GF91.60-P-4048MCU

Illumination of the multifunction display, the dial face, the pointers and displays depending on the dimmer stage Display of dimmer stage over circuit 58d Actuation of warning and indicator lamps Output of acoustic signals Acoustic signals The acoustic warning and information signals and the turn signal indicator clicking are generated by means of an audio signal generator: Turn signal ON (turn signal knocking sound) Light warning (warning tone) Door warning (warning tone) Daytime running lights activated or deactivated (signal tone) (with code (K06) Daytime running lights) Seat belt reminder warning Actuation of stepper motors The electronic speedometer is driven by a stepper motor. Variable displays in the multifunction display The following displays are shown in the multifunction display: Fuel level and reserve indicator Transmission mode display in automatic mode Gear indicator or gearshift recommendation in manual mode Main odometer Multifunction display for remaining fuel, trip odometer and maintenance interval display Time display Ambient temperature display Transmission mode display Display of gear engaged or gearshift recommendation in manual mode Instrument cluster, component description A1 GF54.30-P-6000MCU Outside air temperature sender component description B14 GF83.57-P-4000MCC Restraint systems control unit, component description N2/7 GF91.60-P-4048MCU

The electrolyte, diluted sulfuric acid or acid gel should never be emptied in a careless manner.

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1632 · Applies to: 450, 451, 452, 454 · AR: PE54.00-P-1100MCU, PE54.10-P-2003MEV, PE54.10-P-2011MEV, PE54.10-P-2104MEV, PE54.21-P-2132MEV (+2 more)

This procedure must be carried out by specialist companies. Picture shows ISO symbol for return and recycling Old lead-acid batteries and lead-gel batteries should not be mixed together as this would make recycling more difficult. Always store lead-acid batteries horizontally and do not tilt during transport. Lead batteries can be taken back to the respective manufacturer, to sales outlets and to scrap metal dealers and are recycled at lead recycling plants. Recycled lead is fed back into the production process. The disposal of batteries as domestic waste is not permitted and is forbidden by law. WIRING DIAGRAMS > OVERVIEW OF WIRING DIAGRAMS FOR ELECTRICAL SYSTEM, EQUIPMENT AND INSTRUMENTS - PE54.00-P-1100MCU > MODEL 451 Wiring diagram for battery charger control unit for high-voltage battery MODEL 451.391/ 491 PE54.10-P-2003MEV Wiring diagram, socket for charger feed MODEL 451.391/ 491 PE54.10-P-2011MEV Wiring diagram for battery management control unit MODEL 451.391/ 491 PE54.10-P-2104MEV Wiring diagram for Communications control unit for external socket MODEL 451.391/ 491 PE54.21-P-2132MEV Wiring diagram for high-voltage distributor control unit MODEL 451.391/ 491 PE54.21-P-2133MEV Wiring diagram for data link connector/diagnostic socket MODEL 451 except 451.391/491 PE54.22-P- 2000MCU Wiring diagram for data link connector/diagnostic socket MODEL 451.391/ 491 PE54.22-P-2000MEV Fig 1: View Of ISO Symbol For Return And Recycling Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Wiring diagram electrical center

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1633 · Applies to: 450, 451, 452, 454 · AR: PE54.30-P-2001MEV, PE54.22-P-2000MCU, OV00.01-P-1901MCU, GF00.19-P-1000MCU, GF00.19-P-2000MCU (+2 more)

MODEL 451Sheet 1 PE54.25-P- 2000MCU Wiring diagram electrical center MODEL 451Sheet 2 PE54.25-P- 2000MCV Wiring diagram electrical center MODEL 451Sheet 3 PE54.25-P- 2000MCW Electrical function schematic for electrical center MODEL 451 PE54.25-P- 2050MCU Wiring diagram large instrument (instrument cluster) MODEL 451 except 451.391/491 PE54.30-P- 2001MCU Wiring diagram large instrument (instrument cluster) MODEL 451.391/ 491 PE54.30-P-2001MEV Wiring diagram of auxiliary instruments MODEL 451 / (except 451.391 /491) up to 30.8.10 PE54.30-P- 2003MCU Electrical function diagram for instrument cluster (KI) MODEL 451 PE54.30-P- 2051MCU Wiring diagram for signaling system MODEL 451 PE54.35-P- 2000MCU WIRING DIAGRAMS > WIRING DIAGRAM FOR DATA LINK CONNECTOR/DIAGNOSTIC SOCKET - PE54.22-P-2000MCU > MODEL 451 / (except 451.391 /491) Wiring diagram for data link connector/diagnostic socket PE54.22-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 wiring harness) GF00.19-P-3000MCU Further wiring diagrams PE54.00-P-1100MCU WIRING DIAGRAMS > WIRING DIAGRAM ELECTRICAL CENTER - PE54.25-P-2000-97MCU

Code: Designation: Position: A1 Instrument cluster 46L A15 Additional instruments 28L

WIRING DIAGRAMS > WIRING DIAGRAM ELECTRICAL CENTER - PE54.25-P-2000MCU >

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1658 · Applies to: 450, 451, 452, 454 · AR: PE54.25-P-2000MCU, OV00.01-P-1901MCU

MODEL 451 Sheet 1 Wiring diagram electrical center PE54.25-P-2000-97MCU Use of wiring diagrams OV00.01-P-1901-03MCC Search aid for all wiring diagram groups OV00.01-P-1901MCU Fig 5: Electrical Center - Wiring Diagram (5 Of 5) Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

WIRING DIAGRAMS > WIRING DIAGRAM LARGE INSTRUMENT (INSTRUMENT CLUSTER)

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1665 · Applies to: 450, 451, 452, 454 · AR: PE54.30-P-2001MCU, OV00.01-P-1901MCU, GF00.19-P-1000MCU, GF00.19-P-2000MCU

• PE54.30-P-2001MCU > MODEL 451 / (except 451.391 /391) Wiring diagram large instrument (instrument cluster) PE54.30-P-2001-97MCU 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 Fig 3: Large Instrument (Instrument Cluster) - Wiring Diagram (3 Of 3) Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

(KI) - PE54.30-P-2051MCU >

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1668 · Applies to: 450, 451, 452, 454 · AR: PE54.30-P-2051MCU, OV00.01-P-1901MCU, GF00.19-P-1000MCU, GF00.19-P-2000MCU, GF00.19-P-3000MCU (+5 more)

MODEL 451 Electrical function diagram for instrument cluster (KI) PE54.30-P-2051-99MCU Legend of function diagram of instrument cluster (KI) electrical system PE54.30-P-2051-60MCU 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 PE54.00-P-1100MCU Further wiring diagrams PE83.00-P-1100MCU Further wiring diagrams PE91.00-P-1100MCU WIRING DIAGRAMS > WIRING DIAGRAM FOR SIGNALING SYSTEM - PE54.35-P-2000MCU

MODEL 451 Wiring diagram for signaling system PE54.35-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 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 wiring harness) GF00.19-P-3000MCU Further wiring diagrams PE54.00-P-1100MCU SPECIAL TOOLS > 129 589 00 21 00 126-PIN SOCKET BOX - WS54.00-P-0008B >

and check fluid level in the battery (G1)

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1683 · Applies to: 450, 451, 452, 454 · AR: AR54.00-Z-9451CA

opening (arrow)

Correct

5 Correct the battery acid level with distilled water Refill distilled water up to the web (arrow).

6 Screw in plug (4)

Install

7 Insert bracket (1) and clip in retaining clip (2) at the bracket (1)

8 Tighten nut (3) Installation: Replace self- locking nut (3).

9 Install footrest on the passenger-side Left-hand drive vehicles AR68.30- P- 1340MCC Right-hand drive vehicles AR68.30- P- 1340MCE TESTING & REPAIR > TESTING AND REPAIR WORK: SMART: ELECTRICAL SYSTEM, EQUIPMENT AND INSTRUMENTS - AR54.00-Z-9451CA > MODEL 451

Perform initial startup of control units MODEL 451.3 /4 AR54.21- P- 0018MCE

Charge battery MODEL 451.3 /4 AR54.10- P- 1130MCC

Check condition of battery MODEL 451.3 /4 AR54.10- P- 1129MCC

Check quiescent current consumption MODEL 451.3 /4 AR54.10- P- 1030MCE

Control unit flashing MODEL 451.3/ 4 AR54.21- P- 0012MCC

Control unit flashing MODEL 451.3 /4 AR54.21- P- 0012MCU

Disable/enable high-voltage system MODEL 451.391 /491 with ENGINE 780.009 AR54.10- P- 1160MEV AR54.10-

01MCC

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1688 · Applies to: 450, 451, 452, 454 · AR: AR54.10-P-0005MCC

On vehicles with code (527) High-Line radio, before the ground line (1) is disconnected, it must be ensured that the radio code is available to allow the radio to be put into operation at a later stage.

1 Check condition of battery (G1), if necessary replace battery (G1) Only with model 451.391/491 if during the further course of work, work is to be conducted on the high voltage vehicle electric system. The high voltage system cannot be enabled if the battery (G1) is defective: Before replacing the battery (G1) on model 451.391/491 no further work may be performed on the high-voltage vehicle electrical system. AR54.10- P- 1129MCC 2 Carry out disconnection of high-voltage system Only with model 451.391/491 if during the further course of work, work is to be conducted on the high voltage vehicle electric system. AR54.10- P- 1160MEV 3 Connect STAR DIAGNOSIS and read out fault memory Installation: If necessary, delete fault memory. AD00.00- P-2000- 04MCC 4 Remove foot support on passenger side Left-hand drive vehicles AR68.30- P- 1340MCC Right-hand drive vehicles AR68.30- P- 1340MCE 5 Disconnect ground line (1) from the negative terminal of the battery (G1)

6 Install in the reverse order

7 Set time in the instrument cluster and on the additional instrument

8 Enter radio code On vehicles with code (527) High-Line radio

9 Adapt audio settings On vehicles with code (527) High-Line radio

Notes on audio settings

AH82.60- P-0002- 01MCC TESTING & REPAIR > REMOVE/INSTALL BATTERY - AR54.10-P-0005MCC >

MODEL 451.3## /4## 1# with CODE (LHD) Left-hand drive vehicle

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1689 · Applies to: 450, 451, 452, 454 · AR: AR54.10-P-0006MCC

Remove/install

1 Disconnect battery ground line

AR54.10- P- 0003MCC 2 Take off cover (1)

3 Disconnect positive line (3) from battery (G1)

4 Remove clip (2) of the positive line (3) on the bracket (4) Installation: Replace clip (2).

5 Remove nut (6) and take off bracket (4) Installation: Replace self-locking nut (6)

6 Detach vent hose (5) from battery (G1)

7 Remove battery (G1) If the battery (G1) is replaced, the defective battery (G1) must be disposed of correctly.See: ↓

Dispose of battery OS54.10- P-0001- 01Z 8 Install in the reverse order

TESTING & REPAIR > TREATMENT OF BATTERY IF VEHICLE TAKEN OUT OF SERVICE - AR54.10-P-0006MCC > MODEL 451.3 /4 Fig 1: Identifying Cover, Clip, Positive Line, Bracket, Venting Hose And Nut With Battery Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Risk of explosion caused by

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1690 · Applies to: 450, 451, 452, 454 · AR: AR54.10-P-1000MCC

oxyhydrogen gas. Risk of poisoning and caustic burns caused by swallowing battery acid. Risk of injury caused by burns to skin and eyes from battery acid or when handling damaged lead-acid batteries No fire, sparks, open flames or smoking. Wear acid-resistant gloves, clothing and glasses. Only pour battery acid into suitable and appropriately marked containers. AS54.10- Z-0001- 01A Notes on battery

AH54.10- P-0001- 01A 1 Check battery condition, charge battery if necessary On no account leave battery in discharged state otherwise sulfate deposits will form on the plates. Plates with sulfate deposits indicate initial damage to the battery and result in premature failure. AR54.10- P- 1129MCC 2 Disconnect battery ground line This prevents any battery discharge through closed-circuit accessories (e.g. clock). AR54.10- P- 0003MCC 3 Charge battery Every 4 weeks. On no account leave battery in discharged state otherwise sulfate deposits will form on the plates. Plates with sulfate deposits indicate initial damage to the battery and result in premature failure. AR54.10- P- 1130MCC TESTING & REPAIR > REMOVE/INSTALL 12 VOLT SOCKET - AR54.10-P-1000MCC > MODEL 451.3 /3

1. BEFORE CHARGE

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1701 · Applies to: 450, 451, 452, 454 · AR: AR54.10-P-1129MCC

1. AFTER CHARGE Confirm selection with "Enter".
2. Perform additional menu-assisted function (e.g. starting several times and switching on consumers). Only in taxi test mode if displayed in menu. TESTING & REPAIR > CHECK CONDITION OF BATTERY - AR54.10-P-1129MCC > MODEL 451.3 /4 Remove

Risk of explosion caused by oxyhydrogen gas. Risk of poisoning and caustic burns caused by swallowing battery acid. Risk of injury caused by burns to skin and eyes from battery acid or when handling damaged lead-acid batteries No fire, sparks, open flames or smoking. Wear acid- resistant gloves, clothing and glasses. Only pour battery acid into suitable and appropriately marked containers. AS54.10- Z-0001- 01A Notes on battery

AH54.10- P-0001- 01A Notes on AGM battery Model 451.334/380/480 AH54.10- P-0002- 01MCC 1 Connect STAR DIAGNOSIS and read out fault memory Erase fault memory and eliminate repairing faults. AD00.00- P-2000- 04MCC 2 Remove foot support on passenger side Left-hand drive vehicles AR68.30- P- 1340MCC AR68.30- Fig 9: Selection Of Test Mode - Before Charge And After Charge Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Right hand drive vehicle

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1702 · Applies to: 450, 451, 452, 454 · AR: AR54.10-P-1130MCC

P- 1340MCE Check

3 Visual inspection of battery for external leaks The battery must be replaced in the event of leaks.See: ↓Remove/install battery

Left-hand drive vehicles AR54.10- P- 0005MCC

Right-hand drive vehicles AR54.10- P- 0005MCE Dispose of battery

OS54.10- P-0001- 01Z 4 Check fluid level and correct if necessary Except model 451.334/380/480, Not when the battery has been replaced. AP54.10- P- 5410MCC 5 Check battery

AR54.10- P-1129- 01A Cold test currentMidtronics battery tester *BE54.10- P-1002- 01A Install

6 Install foot support on passenger side Left-hand drive vehicles AR68.30- P- 1340MCC Right-hand drive vehicles AR68.30- P- 1340MCE TEST AND ADJUSTMENT VALUES FOR BATTERY Number Designation 42 AH 60 Ah VRLA 61 AH 62 AH BE54.10-P-1002-01A Cold test current as per EN A 340 680 540 480 TESTING & REPAIR > CHARGE BATTERY - AR54.10-P-1130MCC > MODEL 451.3 /4

Remove/install

Risk of explosion caused by No fire, sparks, open flames or smoking. Wear acid-

o yhydrogen ga

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1703 · Applies to: 450, 451, 452, 454 · AR: AR54.15-P-0050MCU

Risk of poisoning and caustic burns caused by swallowing battery acid. Risk of injury caused by burns to skin and eyes from battery acid or when handling damaged lead-acid batteries re i tant glove , clothing and glasses. Only pour battery acid into suitable and appropriately marked containers. AS54.10- Z-0001- 01A Notes on battery

AH54.10- P-0001- 01A Notes on AGM battery Model 451.334/380/480 AH54.10- P-0002- 01MCC 1 Remove battery Pull vent hose out of the hole in the battery recess.

Left-hand drive vehicles AR54.10- P- 0005MCC Right-hand drive vehicles AR54.10- P- 0005MCE 2 Charge battery according to operating instructions of charger With a battery which is not low-maintenance remove the stop plugs, check acid level and correct if necessary.

3 Install in the reverse order

TESTING & REPAIR > REMOVE/INSTALL MAIN FUSE OF SECONDARY AIR INJECTION PUMP - AR54.15-P-0050MCU > MODEL 451.3 /4 (except 451.391 /491) Remove/install

Fig 1: Identifying Vertical Strut, Fuse Holder And Secondary Air Injection Pump Fuse Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Remove/install

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1705 · Applies to: 450, 451, 452, 454 · AR: AR54.15-P-2001MCC

1 Disconnect battery ground line

AR54.10-P- 0003MCC 2 Invert casing (1) backwards

3 Unlock cover (2) in the marked area (arrow) and fold up

4 Unscrew nuts (3) and remove SAM prefuse (F91) Replace self-locking nuts (3).

5 Install in the reverse order

TESTING & REPAIR > REPLACE SAM FUSES - AR54.15-P-2001MCC > MODEL 451.3/ 4 1 Turn off ignition

Fig 1: Identifying Casing, Nut, Cover And SAM Prefuse Courtesy of MERCEDES-BENZ OF NORTH AMERICA. Fig 1: Identifying Bolts, Standard Fuses, SAM Control Unit, Mini And Maxi Fuses Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Adjust left seat to the rear

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1706 · Applies to: 450, 451, 452, 454 · AR: AR54.18-P-0002MCC, AR54.10-P-0003MCC, AR54.18-P-0006MCU

2 Adjust left seat to the rear

Replace standard fuses (2) or mini fuses (3)

3 Pull out damaged standard fuse (2) or mini fuse (3) and replace

Replace maxi fuses (4)

4 Unclip SAM control unit (N10/10) in the rear area (arrow) and fold down forwards

5 Unscrew bolts (1) and carefully lower SAM control unit (N10/10) downwards until the maxi fuses (4) are accessible

6 Remove damaged maxi fuse (4) and replace

7 Position SAM control unit (N10/10) on crossmember under instrument panel and fasten in place using the bolts (1)

8 Clip in SAM control unit (N10/10) in correct area (arrow)

TESTING & REPAIR > DISCONNECTING AND CONNECTING ELECTRICAL CABLES FROM BATTERY - AR54.18-P-0002MCC > MODEL 451.3 /4

Remove/install

1 Disconnect battery ground line

AR54.10-P-0003MCC 2 Take off cover (1)

3 Disconnect positive line (2) from battery (G1)

4 Install in the reverse order

TESTING & REPAIR > REMOVE/INSTALL ELECTRICAL LINE FROM BATTERY TO STARTER/ALTERNATOR - AR54.18-P-0006MCU > Fig 1: Identifying Cover, Positive Line And Battery Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

10. Apply axial solder connector to the lines and wrap repaired area round with fabric tape.

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1713 · Applies to: 450, 451, 452, 454 · AR: AR54.21-P-0012MCU

The axial solder connectors must not lie directly above one another. TESTING & REPAIR > CONTROL UNIT FLASHING - AR54.21-P-0012MCU > MODEL 451.3 /4

Flashing

1 Connect STAR DIAGNOSIS

Connect STAR DIAGNOSIS and read out fault memory

AD00.00- P-2000- 04MCC 2 Enter vehicle identification number inDiagnosis Assistance system and open main menu with "Button F2"

3 Select menu "Systems" in main menu and confirm with "Button

Fig 6: Identifying Correct And Incorrect Positions Of Soldered Point Courtesy of MERCEDES-BENZ OF NORTH AMERICA. Fig 7: Wrapping Axial Solder Connectors Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

(N10/10) until the electrical

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1719 · Applies to: 450, 451, 452, 454 · AR: AR54.25-P-0003MCC

connectors (3) are accessible 7 Unclip cover (5) on SAM control unit (N10/10)

8 Unscrew nut (6) and remove positive battery cable (4) If the nut (6) is detached from the positive battery cable (4), it must be replaced by a collar nut.

9 Remove additional fuses (2) with connector on SAM control unit (N10/10) The number of additional fuses may vary (2) depending on the vehicle model and equipment.Remove additional fuses (2) with connector as the connectors are coded.

10 Separate electrical connectors (3) and electrical connector (arrow B)

11 Remove SAM control unit (N10/10) from the vehicle

12 Install in the reverse order

13 Flash the SAM control unit (N10/10) When replacing the SAM control unit (N10/10). AR54.21- P- 0012MCU TESTING & REPAIR > REMOVE/INSTALL WIPER SWITCH - AR54.25-P-0003MCC > MODEL 451.3 /4 Remove/install

1 Remove steering column cover

AR68.30- P- 2000MCC 2 Unclip catch hook (3) on right wiper switch (S4/4)

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

TESTING & REPAIR > REMOVE/INSTALL IGNITION/STARTER SWITCH LOCK CYLINDER -

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1721 · Applies to: 450, 451, 452, 454 · AR: AR54.25-P-1030MCU

AR54.25-P-1030MCU > MODEL 451.3 /4 Removing

1 Remove transponder coil and put to one side with electrical line connected

AR80.35- P- 4515MCU 2 Remove clamp (2)

Insert transmitter key (3) into the lock cylinder of the ignition/starter Ensure that the selector lever is Fig 2: Identifying Wedge Tool (110 589 03 59 00) Courtesy of MERCEDES-BENZ OF NORTH AMERICA. Fig 1: Identifying Ignition/Starter Switch Lock Cylinder Components Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

cover (1) from

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1724 · Applies to: 450, 451, 452, 454 · AR: AR54.30-P-6015MCU

1 cover (1) from steering wheel spokes

AR46.10- P- 0105MCC 2 Unclip electrical wiring harness (3) from mounting (arrows) of front cover (1)

3 Unscrew left and right bolts (2) Installation: Carefully tighten bolts (2) and make sure that the front covering (1) is not damaged as otherwise it will have to be replaced.

4 Remove left cruise control switch (S112s4) and right cruise control switch (S112s5) The left cruise control switch (S112s4) and right cruise control switch (S112s5) are designed as a unit and they cannot be separated. Installation: Check left cruise control switch (S112s4) and right cruise control switch (S112s5) are correctly seated in the front cover (1).

5 Install in the reverse order

TESTING & REPAIR > REMOVE/INSTALL INSTRUMENT CLUSTER - AR54.30-P-6015MCU

MODEL 451.3 /4 Fig 1: Identifying Instrument Cluster With Clips And Connector Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Turn the steering to the left

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1727 · Applies to: 450, 451, 452, 454 · AR: AR54.35-P-1556MCU, AS54.00-Z-9999ZZ

1 Turn the steering to the left

2 Pull the outside temperature display temperature sensor (B14) out of the front module (2)

3 Unplug electrical connector (1) and remove outside temperature indicator temperature sensor (B14).

4 Install in the reverse order

TESTING & REPAIR > REMOVE/INSTALL SIGNALING HORN - AR54.35-P-1556MCU > MODEL 451.3 /4 Remove/install

1 Remove front CBS

AR88.00- P- 1010MCC 2 Disconnect electrical connectors from horn (H2) Installation: Carry out a function test after connecting the electrical connectors to the horn (H2).

3 Unscrew bolt (1) and remove horn (H2)

4 Install in the reverse order

SAFETY PRECAUTIONS > SAFETY INFORMATION: ELECTRICAL SYSTEM, EQUIPMENT AND INSTRUMENTS - AS54.00-Z-9999ZZ > MODEL all Risk of death when touching components on vehicles with high-voltage on-board electrical system MODEL all AS54.00- Z-0001- 01A MODEL 970 with CODE AS54.00- Fig 1: Identifying Horn And Screw Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Document retrofitted equipment using

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1736 · Applies to: 450, 451, 452, 454 · AR: BA54.00-Z-9999CZ, BE54.00-Z-9999CZ

18 Document retrofitted equipment using vehicle documentation (VeDoc) Attach "Additional instruments (A15) retrofitted as per AZ54.30-P- 0001MCD " note under field organization text for design group 54.

PARTS ORDERING NOTES Part no. Designation Quantity DG 54 (see EPC) Additional instruments 1 DG 54 (see EPC) Screw 1 DG 54 (see EPC) Cover 1 TORQUE SPECIFICATIONS > TIGHTENING TORQUES: SMART: ELECTRICAL SYSTEM, EQUIPMENT AND INSTRUMENTS - BA54.00-Z-9999CZ > MODEL all

Battery MODEL 454.0, 451.391 /491 BA54.10-P-1000-01E

Battery MODEL 451.391 /491 BA54.10-P-1000-01H

Control units/base module MODEL 450, 451.334 /380 /480 BA54.21-P-1000-01B

Signaling system MODEL 450.3 BA54.35-P-1000-01B

Wiring harness MODEL 450.3 /4 BA54.18-P-1000-02A TEST & ADJUSTMENT VALUES > TEST AND ADJUSTMENT VALUES: SMART: ELECTRICAL SYSTEM, EQUIPMENT AND INSTRUMENTS - BE54.00-Z-9999CZ > MODEL all

Test values for battery, voltage supply MODEL all BE54.10-P-1000-01A TEST & ADJUSTMENT VALUES > TEST VALUES FOR BATTERY, VOLTAGE SUPPLY - BE54.10-P-1000-01A > Fig 4: Identifying Snap-Release Tool (452 589 01 63 00) Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fuse

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1745 · Applies to: 450, 451, 452, 454 · AR: GF54.21-P-4157MCU

Clamping device Wire Identification Fused function Rating in amperes (A) F36 30 4.0 RD Secondary air injection pump (M33) 50 F58 30 16.0 RD Starter (M1), alternator (G2) 200 F91 30 16.0 RD SAM control unit (N10/10) 100 BASIC KNOWLEDGE > COMPONENT DESCRIPTION FOR THE SAM CONTROL UNIT - GF54.21-P-4157MCU > MODEL 451.3 /4 Location The SAM control unit is located in the footwell on the passenger side. Task The SAM control unit supplies control units and electrical components with voltage via limit switches. The individual control units and electrical components are fused via the fuse and relay blocks contained in the SAM control unit. Fig 1: Identifying Secondary Air Injection Pump Fuse, Starter/Alternator Fuse And SAM Prefuse Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Shown on LHD model

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1751 · Applies to: 450, 451, 452, 454 · AR: GF54.25-P-4300MCU

Location The data link connector is located in the footwell on the driver-side. Task The data link connector is the interface for the connection of STAR DIAGNOSIS to the Controller Area Network (data bus/CAN bus) (CAN). BASIC KNOWLEDGE > COCKPIT SWITCH GROUP, COMPONENT DESCRIPTION - GF54.25-P-4300MCU > MODEL 451.3 /4 Fig 1: Identifying Data Link Connector Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Shown on code (K07) Speedometer (miles)

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1753 · Applies to: 450, 451, 452, 454 · AR: GF54.30-P-0002MCU

BASIC KNOWLEDGE > INSTRUMENT CLUSTER (IC), FUNCTION - GF54.30-P-0002MCU > MODEL 451.3 /4 Fig 1: Identifying Instrument Cluster And Warning Systems Components Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Circuit 58 ON

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1756 · Applies to: 450, 451, 452, 454 · AR: PE54.30-P-2001MCU, PE54.30-P-2051MCU, GF54.30-P-2001MCU

The instrument cluster illumination is switched on and the current contents of the multifunction display are displayed. After circuit 58 OFF the instrument cluster remains active for another 30 s. By pressing a button on the instrument cluster. The multifunction display illumination is switched on for 30 s and the current content displayed. Acoustic signals The following acoustic signals are produced and output via the sound signal generator integrated in the instrument cluster: Turn signal indicator Warning and information signals Turn signal indicator The turn signal indicator is always accompanied by an acoustic clicking sound generated in the same rhythm. The acoustic turn signal indicator is actuated with: Turn signaling (at double frequency if a turn signal lamp fails) Hazard warning flashing Warning and information signals A warning or signal tone is emitted: When the standing lights are switched on, the transmitter key removed and the driver door open (light warning) When the driver door is opened while the engine is running and a gear engaged (door warning) As confirmation that the daytime running lights have been activated or deactivated (with code (K06) Daytime running lights) If at circuit 15 On and with the doors closed, the driver seat belt buckle restraint systems switch (S68/3) is not closed (seat belt reminder warning) If the driver seat belt buckle restraint systems switch or the front passenger seat belt buckle restraint systems switch (S68/4) is not closed when the front passenger seat is occupied and the vehicle speed is v > 25 km/h (seat belt reminder warning) After circuit 15 Off and after removing the transmitter key, when the vehicle was locked using the emergency function Actuation in each instance is via the CAN by the SAM control unit.

Instrument cluster (IC [K]), display instrument and warning systems

GF54.30-P-0002- 08MCU Wiring diagram large instrument (instrument cluster)

PE54.30-P-2001MCU Electrical function schematic for instrument cluster (KI)

PE54.30-P-2051MCU

Indicator/warning messages, function

GF54.30-P-2001MCU

Display speed, function

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1757 · Applies to: 450, 451, 452, 454 · AR: GF54.30-P-3025MCU, GF54.30-P-3041MCU, GF54.30-P-0997MCU

GF54.30-P-3025MCU

Display operating conditions, function

GF54.30-P-3041MCU BASIC KNOWLEDGE > TABLE OF CONTENTS FOR FUNCTION DESCRIPTION OF INSTRUMENT CLUSTER (IC) - GF54.30-P-0997MCU > MODEL 451.3 /4

Instrument cluster (IC), function

GF54.30-P- 0002MCU

Instrument cluster (IC [K]), display instrument and warning systems

GF54.30-P-0002- 08MCU Wiring diagram large instrument (instrument cluster)

PE54.30-P- 2001MCU Electrical function schematic for instrument cluster (KI)

PE54.30-P- 2051MCU

Indicator/warning messages, function

GF54.30-P- 2001MCU

Display speed, function

GF54.30-P- 3025MCU

Display operating conditions, function

GF54.30-P- 3041MCU

Overview of system components, instrument cluster (IC) component description

GF54.30-P- 9996MCU BASIC KNOWLEDGE > INDICATOR/WARNING MESSAGES, FUNCTION - GF54.30-P- 2001MCU > MODEL 451.3 /4 Shown on code (K07) Speedometer (miles)

is output. The status of the left door rotary tumbler microswitch (S87/7) is read in by the SAM

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1762 · Applies to: 450, 451, 452, 454 · AR: GF54.30-P-3025MCU

control unit which requests acoustic feedback. Door warning (warning tone) Daytime running lights activated or deactivated (signal tone) (with code (K06) Daytime running lights) Seat belt reminder warning

Instrument cluster, component description A1 GF54.30-P- 6000MCU

Restraint systems control unit, component description N2/7 GF91.60-P- 4048MCU

ME-SFI [ME] control unit, component description N3/10 GF07.61-P- 6000MCU

SAM control unit, component description N10/10 GF54.21-P- 4157MCU

ESP control unit, component description N47-5 GF42.45-P- 5118MCU

Electric steering control unit, component description N68For vehicles with code (V26) Power steering, EPS (FFO) GF46.35-P- 7100MCU

Tire pressure monitor control unit, component description N88 GF40.15-P- 5124MCU BASIC KNOWLEDGE > DISPLAY SPEED, FUNCTION - GF54.30-P-3025MCU > MODEL 451.3 /4 Shown on code (K07) Speedometer (miles)

Vehicle speed display

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1763 · Applies to: 450, 451, 452, 454 · AR: GF54.30-P-6000MCU, GF42.45-P-5118MCU

The electronic speedometer is used to display vehicle speed. The speedometer is driven by a stepper motor. Measuring the vehicle speed The instrument cluster receives from the ESP control unit (N47-5) the wheel speeds required for the computation of vehicle speed via the Controller Area Network (data bus/CAN bus) (CAN). The tire size is taken into account when calculating the speed. Coding takes place using STAR DIAGNOSIS. Assessment of wheel speed signals: The wheel speed signals are compared against each other and thus checked in terms of plausibility. If there are no significant deviations, the vehicle speed is calculated from the rotational speed of the left front wheel. If the individual wheel speed signals vary substantially, the speed signals may be faulty or the vehicle may be cornering. If, by comparing the wheel speeds on both sides of the vehicle, the instrument cluster determines that the car is cornering, the vehicle speed is calculated from the mean value of the front wheel speeds. If the comparisons indicate one or more faulty wheel speed signals, the vehicle speed is then calculated on the basis of highest wheel speed. This also applies if an error message is received instead of a wheel speed signal. The travel distance is determined as for the vehicle speed.

Instrument cluster, component description A1 GF54.30-P-6000MCU

ESP control unit, component description N47-5 GF42.45-P-5118MCU BASIC KNOWLEDGE > DISPLAY OPERATING CONDITIONS, FUNCTION - GF54.30-P- Fig 1: Identifying Instrument Cluster And Electronic Speedometer Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Always store lead-acid batteries horizontally and do not tilt during transport.

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1770 · Applies to: 450, 451, 452, 454 · AR: PE54.00-P-1100MCU

Lead batteries can be taken back to the respective manufacturer, to sales outlets and to scrap metal dealers and are recycled at lead recycling plants. Recycled lead is fed back into the production process. The disposal of batteries as domestic waste is not permitted and is forbidden by law. WIRING DIAGRAMS > OVERVIEW OF WIRING DIAGRAMS FOR ELECTRICAL SYSTEM, EQUIPMENT AND INSTRUMENTS - PE54.00-P-1100MCU > MODEL 451 PE54.10- P- 2003MEV Wiring diagram for battery charger control unit for high-voltage battery MODEL 451.391/ 491 PE54.10-P- 2003MEV PE54.10- P- 2011MEV Wiring diagram, socket for charger feed MODEL 451.391/ 491 PE54.10-P- 2011MEV PE54.10- P- 2104MEV Wiring diagram for battery management control unit MODEL 451.391/ 491 PE54.10-P- 2104MEV PE54.21- P- 2132MEV Wiring diagram for Communications control unit for external socket MODEL 451.391/ 491 PE54.21-P- 2132MEV PE54.21- P- 2133MEV Wiring diagram for high-voltage distributor control unit MODEL 451.391/ 491 PE54.21-P- 2133MEV PE54.22- P- 2000MCU Wiring diagram for data link connector/diagnostic socket MODEL 451 except 451.391/491 PE54.22-P- 2000MCU PE54.22- P- 2000MEV Wiring diagram for data link connector/diagnostic socket MODEL 451.391/ 491 PE54.22-P- 2000MEV PE54.25- P- 2000MCU Wiring diagram electrical center MODEL 451Sheet 1 PE54.25-P- 2000MCU PE54.25- P- 2000MCV Wiring diagram electrical center MODEL 451Sheet 2 PE54.25-P- 2000MCV PE54.25- P- 2000MCW Wiring diagram electrical center MODEL 451Sheet 3 PE54.25-P- 2000MCW PE54.25- P- 2050MCU Electrical function schematic for electrical center MODEL 451 PE54.25-P- 2050MCU PE54.30- P- 2001MCU Wiring diagram large instrument (instrument cluster) MODEL 451 except 451.391/491 PE54.30-P- 2001MCU

WIRING DIAGRAMS > WIRING DIAGRAM FOR DATA LINK CONNECTOR/DIAGNOSTIC

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1774 · Applies to: 450, 451, 452, 454 · AR: PE54.22-P-2000MCU

SOCKET - PE54.22-P-2000MCU > MODEL 451 / (except 451.391 /491) PE54.22-P- 2000-97MCU Wiring diagram for data link connector/diagnostic socket

PE54.22-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 Fig 2: Electronic Stability Program (ESP) - Wiring Diagram (2 Of 2) Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

WIRING DIAGRAMS > WIRING DIAGRAM ELECTRICAL CENTER - PE54.25-P-2000MCU >

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1776 · Applies to: 450, 451, 452, 454 · AR: PE54.25-P-2000MCU

MODEL 451 Sheet 1 PE54.25- P-2000- 97MCU Wiring diagram electrical center

PE54.25- 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 Fig 1: Data Link Connector/Diagnostic Socket - Wiring Diagram Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

WIRING DIAGRAMS > WIRING DIAGRAM ELECTRICAL CENTER - PE54.25-P-2000MCV >

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1785 · Applies to: 450, 451, 452, 454 · AR: PE54.25-P-2000MCV

MODEL 451 Sheet 2 PE54.25- P-2000- 97MCV Wiring diagram electrical center

PE54.25- P-2000- 97MCV OV00.01- OV00.01- Fig 5: Electrical Center - Wiring Diagram (5 Of 5) Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

WIRING DIAGRAMS > WIRING DIAGRAM ELECTRICAL CENTER - PE54.25-P-2000MCW >

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1796 · Applies to: 450, 451, 452, 454 · AR: PE54.25-P-2000MCW

MODEL 451 Sheet 3 PE54.25- P-2000- 97MCW Wiring diagram electrical center

PE54.25- P-2000- 97MCW OV00.01- P-1901- 03MCC Use of wiring diagrams

OV00.01- P-1901- 03MCC OV00.01- OV00.01- Fig 6: Electrical Center - Wiring Diagram (6 Of 6) Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

WIRING DIAGRAMS > ELECTRICAL FUNCTION DIAGRAM FOR ELECTRICAL CENTER -

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1806 · Applies to: 450, 451, 452, 454 · AR: PE54.25-P-2050MCU

PE54.25-P-2050MCU > MODEL 451 PE54.25-P- 2050-99MCU Electrical function diagram for electrical center

PE54.25-P- 2050-99MCU PE54.25-P- 2050-60MCU Legend of electrical function diagram for electrical center

PE54.25-P- 2050-60MCU Fig 5: Electrical Center - Wiring Diagram (5 Of 5) Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

WIRING DIAGRAMS > ELECTRICAL FUNCTION DIAGRAM FOR ELECTRICAL CENTER -

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1811 · Applies to: 450, 451, 452, 454 · AR: PE54.25-P-2050MCU

PE54.25-P-2050MCU > MODEL 451 PE54.25-P- 2050-99MCU Electrical function diagram for electrical center

PE54.25-P- 2050-99MCU PE54.25-P- 2050-60MCU Legend of electrical function diagram for electrical center

PE54.25-P- 2050-60MCU OV00.01-P- 1901-03MCC Use of wiring diagrams

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

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

A1e18

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1815 · Applies to: 450, 451, 452, 454 · AR: PE54.30-P-2051MCU

Electric steering indicator lamp 15J A1e26 "CHECK ENGINE" MIL 15J A1e30 Oil pressure warning lamp 15K A1e41 ESP warning lamp 16H A1e54 Coolant temperature warning lamp 16H A1e66 Tire pressure monitor warning lamp 16J A1e67 Low beam indicator lamp 16J A1p8 Electronic speedometer 16J A1p13 Multifunction display 16K A2/1 smart radio 9 18L A2/2 smart radio 10 18L B14 Outside temperature display temperature sensor 16D B24/15 Yaw rate, lateral and longitudinal acceleration sensor 28L N2/7 Restraint systems control unit 7B N3/10 ME-SFI [ME] control unit 2D N10/10 SAM control unit 7L N15/5 Electronic selector lever module control unit 25B N15/6 Automated manual transmission control unit 30B N23 Heater/AC operating unit 20D N47-5 ESP control unit 30L N49 Steering angle sensor 26L N68 Steering assist control unit 23L N110 Weight Sensing System (WSS) control unit 11B S6/1 Cockpit switch group 11K S112 Paddle shift for steering wheel gearshift (SAL) 16D U492 Valid for power steering 22H X11/4 Data link connector 3L WIRING DIAGRAMS > ELECTRICAL FUNCTION DIAGRAM FOR INSTRUMENT CLUSTER (KI) - PE54.30-P-2051MCU > MODEL 451 PE54.30-P- 2051-99MCU Electrical function diagram for instrument cluster (KI)

PE54.30-P- 2051-99MCU PE54.30-P- 2051-60MCU Legend of function diagram of instrument cluster (KI) electrical system

PE54.30-P- 2051-60MCU

OV00.01-P-

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1816 · Applies to: 450, 451, 452, 454 · AR: PE54.35-P-2000MCU

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 PE07.00-P- 1100MCU

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

Further wiring diagrams PE26.00-P- 1100MCU PE42.00-P- 1100MCU

Further wiring diagrams PE42.00-P- 1100MCU PE54.00-P- 1100MCU

Further wiring diagrams PE54.00-P- 1100MCU PE83.00-P- 1100MCU

Further wiring diagrams PE83.00-P- 1100MCU PE91.00-P- 1100MCU

Further wiring diagrams PE91.00-P- 1100MCU WIRING DIAGRAMS > WIRING DIAGRAM FOR SIGNALING SYSTEM - PE54.35-P-2000MCU

MODEL 451 PE54.35-P- 2000-97MCU Wiring diagram for signaling system

PE54.35-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

This approach is particularly required after long periods of being switched off. This ensures that

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1852 · Applies to: 450, 451, 452, 454 · AR: GF54.30-P-6000MCU, GF47.20-P-2000MCC, GF54.21-P-4157MCU, GF15.10-P-2100MCC

the fuel injection valves are supplied with sufficient fuel during starting. An engine start must be completed, however, before repeated actuation of the fuel pump with fuel level sensor. Starting The start function is activated by turning the transmitter key from position 1 (circuit 15 On) to position 2 (circuit 50 On) in the ignition/ starter switch. Actuation of the starter takes place directly by the SAM control unit. The start process is ended again as soon as terminal 50 is no longer applied at the SAM control unit or the engine cranking speed is reached. Start quantity control As soon as the first RPM signal is recognized by the crankshaft position sensor during the start process, the SAM control unit energizes the fuel pump with fuel level sensor permanently. In order to facilitate starting of a cold engine, fuel is also injected during the starting procedure. The increase in injection quantity (start quantity) takes place depending on the coolant temperature and is achieved through extending the injection time. The start quantity control is enabled after starter recognition and remains active until a stable idle speed is recognized by the ME-SFI [ME] control unit. The higher the coolant temperature, the lower is the start quantity enable by the ME-SFI [ME] control unit. Post-start enrichment When the engine is cold, fuel precipitates on the walls of the intake manifold and is not available to the engine for combustion. The missing fuel volume is compensated by the post-start enrichment function. After the cold start the fuel-air mixture is enriched for short time through longer injection times of the fuel injection valves. Post-start enrichment is achieved by the ME-SFI [ME] control unit and is dependent on the coolant temperature at engine start. Instrument cluster, component description A1 GF54.30-P-6000MCU Coolant temperature sensor, component description B11/4 GF07.04-P- 6040MCC Component description for the intake manifold pressure sensor B28 GF07.04-P- 6062MCC Crankshaft position sensor, component description L5 GF07.04-P- 6010MCC Component description for fuel pump M3/3 GF47.20-P-2000MCC ME-SFI [ME] control unit, component description N3/10 GF07.61-P- 6000MCU SAM control unit, component description N10/10 GF54.21-P-4157MCU Ignition coils, component description T1/1, T1/2, T1/3 GF15.10-P-2100MCC Fuel injection valves, component description Y62/1, Y62/2, Y62/3 GF07.03-P- 6010MCC

SAM control unit, component description

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1867 · Applies to: 450, 451, 452, 454 · AR: GF54.21-P-4157MCU, GF26.19-P-1010MCU, GF83.40-P-3001MCU, GF42.45-P-5118MCU, GF18.40-P-4000MCC (+5 more)

N10/10 GF54.21-P-4157MCU Component description for the automated manual transmission control unit N15/6 GF26.19-P-1010MCU Component description for the heater/air conditioning operating unit N23For code (I01) Air conditioning Plus GF83.40-P-3001MCU ESP control unit, component description N47-5 GF42.45-P-5118MCU Component description for the oil pressure switch S41/1 GF18.40-P-4000MCC Ignition coils, component description T1/1, T1/2, T1/3 GF15.10-P-2100MCC Secondary air injection pump switchover valve, component description Y32 GF14.30-P-2055MCU Adjustable camshaft timing solenoid, component description Y49 GF05.20-P-2100MCC Activated charcoal filter shutoff valve, component description Y50 GF47.31-P-2100MCU Component description for the tank vent valve Y58 GF47.30-P-4037MCC Fuel injection valves, component description Y62/1, Y62/2, Y62/3 GF07.03-P- 6010MCC BASIC KNOWLEDGE > COMPONENT DESCRIPTION FOR THE ME-SFI [ME] CONTROL UNIT - GF07.61-P-6000MCU > ENGINE 132.9 in MODEL 451.3/4 Fig 1: Locating ME-SFI (ME) Control Unit Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

This approach is particularly required after long periods of being switched off. This ensures that

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 1907 · Applies to: 450, 451, 452, 454 · AR: GF54.30-P-6000MCU, GF07.04-P-6040MCC, GF07.04-P-6062MCC, GF07.04-P-6010MCC, GF47.20-P-2000MCC (+2 more)

the fuel injection valves are supplied with sufficient fuel during starting. An engine start must be completed, however, before repeated actuation of the fuel pump with fuel level sensor. Starting The start function is activated by turning the transmitter key from position 1 (circuit 15 On) to position 2 (circuit 50 On) in the ignition/ starter switch. Actuation of the starter takes place directly by the SAM control unit. The start process is ended again as soon as terminal 50 is no longer applied at the SAM control unit or the engine cranking speed is reached. Start quantity control As soon as the first rpm signal is recognized by the crankshaft position sensor during the start process, the SAM control unit energizes the fuel pump with fuel level sensor permanently. In order to facilitate starting of a cold engine, fuel is also injected during the starting procedure. The increase in injection quantity (start quantity) takes place depending on the coolant temperature and is achieved through extending the injection time. The start quantity control is enabled after starter recognition and remains active until a stable idle speed is recognized by the ME-SFI [ME] control unit. The higher the coolant temperature, the lower is the start quantity enable by the ME-SFI [ME] control unit. Post-start enrichment When the engine is cold, fuel precipitates on the walls of the intake manifold and is not available to the engine for combustion. The missing fuel volume is compensated by the post-start enrichment function. After the cold start the fuel-air mixture is enriched for short time through longer injection times of the fuel injection valves. Post-start enrichment is achieved by the ME-SFI [ME] control unit and is dependent on the coolant temperature at engine start. Instrument cluster, component description A1 GF54.30-P-6000MCU Coolant temperature sensor, component description B11/4 GF07.04-P-6040MCC Component description for the intake manifold pressure sensor B28 GF07.04-P-6062MCC Crankshaft position sensor, component description L5 GF07.04-P-6010MCC Component description for fuel pump M3/3 GF47.20-P-2000MCC ME-SFI [ME] control unit, component description N3/10 GF07.61-P-6000MCU SAM control unit, component description N10/10 GF54.21-P-4157MCU

AZ46.10-P-1005MCC >

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2083 · Applies to: 450, 451, 452, 454 · AR: AZ46.10-P-1005MCC, AR54.10-P-0003MCC, AR68.30-P-2000MCC, PE54.30-P-2001MCC, PE54.30-P-2001MCD (+3 more)

MODEL 451.3/4 Remove

1 Disconnect battery ground line

AR54.10-P-0003MCC 2 Remove steering column cover

AR68.30-P-2000MCC 3 Disconnect clock spring contact and airbag connector

Check

4 Check whether lines to pin 8 and 9 are present The lines to pin 8 and 9 are marked with the letters "SAL [steering wheel gearshift]".Refer to: ↓

Location and assignment of line and plug connectors, cockpit

• not for USA GF00.19-P-1000- 03MCC

• for USA only If lines to pin 8 and 9 are present, the steering wheel with shift paddles can be fitted directly.If the lines to pin 8 and 9 are not present, then they should be routed corresponding to the wiring diagram from the clock spring contact and airbag connector to the instrument cluster.Refer to: ↓ GF00.19-P-1000- 03MCU Wiring diagram large instrument (instrument cluster)

• not for USAModel 451.###

up to 013644

PE54.30-P-2001MCC

• not for USAModel 451.### /###(except 451.334/380/480) ## as of 013645 PE54.30-P-2001MCD

• not for USAModel 451.334/380/480 PE54.30-P-2001MCE

• for USA only PE54.30-P-2001MCU Remove

5 Remove steering wheel

AR46.10-P-0100MCC

Instrument cluster, component description

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2092 · Applies to: 450, 451, 452, 454 · AR: GF54.30-P-6000MCU, GF46.35-P-5100MCC, GF46.35-P-6600MCC, GF07.61-P-6000MCU, GF42.45-P-5118MCU (+5 more)

A1 GF54.30-P-6000MCU Electric steering torque sensor, component description B23 GF46.35-P-5100MCC Electric steering actuator motor, component description M19 GF46.35-P-6600MCC ME-SFI [ME] control unit, component description N3/10 GF07.61-P-6000MCU ESP control unit, component description N47-5 GF42.45-P-5118MCU Steering angle sensor, component description N49 GF42.45-P-5107MCC Electric steering control unit, component description N68 GF46.35-P-7100MCU Table of contents for function description of electric steering

GF46.35-P-0998MCU WIRING DIAGRAMS > OVERVIEW OF WIRING DIAGRAMS FOR STEERING - PE46.00-P- 1100MCU > MODEL 451 Steering wheel wiring diagram MODEL 451 PE46.10-P-2102MCU Wiring diagram of electric steering MODEL 451 PE46.35-P-2000MCU WIRING DIAGRAMS > STEERING WHEEL WIRING DIAGRAM - PE46.10-P-2102-97MCU > Document number: Document title: Code: Designation: Position: A1 Instrument cluster 11L A1 Instrument cluster 34L A45 Fanfare horns and airbag clock spring contact 2F A45 Fanfare horns and airbag clock spring contact 20F N10/10 SAM control unit 5L N10/10 SAM control unit 23L N2/7 Restraint systems control unit 16L N2/7 Restraint systems control unit 41L N3/10 ME-SFI [ME] control unit 29L R12/13 Driver airbag ignition squib 1 15A R12/13 Driver airbag ignition squib 1 40A R12/14 Driver airbag ignition squib 2 16A R12/14 Driver airbag ignition squib 2 42A

Instrument cluster, component

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2148 · Applies to: 450, 451, 452, 454 · AR: GF54.30-P-6000MCU, GF46.35-P-5100MCC, GF46.35-P-6600MCC, GF07.61-P-6000MCU, GF42.45-P-5118MCU (+5 more)

description A1 GF54.30-P-6000MCU Electric steering torque sensor, component description B23 GF46.35-P-5100MCC Electric steering actuator motor, component description M19 GF46.35-P-6600MCC ME-SFI [ME] control unit, component description N3/10 GF07.61-P-6000MCU ESP control unit, component description N47-5 GF42.45-P-5118MCU Steering angle sensor, component description N49 GF42.45-P-5107MCC Electric steering control unit, component description N68 GF46.35-P-7100MCU Table of contents for function description of electric steering

GF46.35-P-0998MCU WIRING DIAGRAMS > OVERVIEW OF WIRING DIAGRAMS FOR STEERING - PE46.00-P- 1100MCU > MODEL 451 PE46.10-P-2102MCU Steering wheel wiring diagram MODEL 451 PE46.10-P-2102MCU PE46.35-P-2000MCU Wiring diagram of electric steering MODEL 451 PE46.35-P-2000MCU Document number: pe46.10-p-2102-97mcu Document title: Steering wheel wiring diagram Code: Designation: Position: A1 Instrument cluster 11L A1 Instrument cluster 34L A45 Fanfare horns and airbag clock spring contact 2F A45 Fanfare horns and airbag clock spring contact 20F N10/10 SAM control unit 5L N10/10 SAM control unit 23L N2/7 Restraint systems control unit 16L N2/7 Restraint systems control unit 41L N3/10 ME-SFI [ME] control unit 29L R12/13 Driver airbag ignition squib 1 15A R12/13 Driver airbag ignition squib 1 40A

The following components are actuated by the heater/AC operating unit via CAN:

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2488 · Applies to: 450, 451, 452, 454 · AR: GF54.30-P-6000MCU, GF83.55-P-2108MCU, GF83.57-P-2126MCC, GF07.04-P-6040MCC, GF07.61-P-6000MCU (+3 more)

Refrigerant compressor via SAM control unit To prevent damage to the climate control system, the refrigerant compressor is switched off at refrigerant pressures above 28 bar. 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 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 BASIC KNOWLEDGE > CONDENSER, COMPONENT DESCRIPTION - GF83.40-P-2188MCC

MODEL 451.3/4 with CODE (I01) Air conditioning Plus Location The condenser is located behind the radiator grille, immediately in front of the radiator. Task The compressed refrigerant is cooled in the condenser. This changes the state of the matter from gaseous to liquid. Fig 1: Locating Condenser Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

wiring harness)

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2501 · Applies to: 450, 451, 452, 454 · AR: PE54.00-P-1100MCU

Further wiring diagrams PE54.00-P-1100MCU WIRING DIAGRAMS > LEGEND OF ELECTRICAL FUNCTION DIAGRAM FOR AIR CONDITIONING - PE83.30-P-2050-60MCU > MODEL 451 Code Designation Coordinates A1 Instrument cluster 21G A9 Refrigerant compressor 3L B10/6 Evaporator temperature sensor 12H B12 Refrigerant pressure sensor 12H B14 Outside temperature display temperature sensor 22E M2 Blower motor 9K M16/8 Blend air flap actuator 8G M39 Air recirculation flap actuator motor 8G N3/10 ME-SFI [ME] control unit 17D N10/10 SAM control unit 2G N23 Heater/AC operating unit 10G R1 Rear window defroster 3B R14 Blower motor series resistor group 13L S98/1 Blower switch 11J X11/4 Data link connector 8C WIRING DIAGRAMS > ELECTRICAL FUNCTION DIAGRAM FOR AIR CONDITIONING - PE83.30-P-2050-99MCU > Code: Designation: Position: A1 Instrument cluster 21 G A9 AC compressor 3 L B10/6 Evaporator temperature sensor 12 H B12 Refrigerant pressure sensor 12 H B14 Ambient temperature display temperature sensor 22 E M16/8 Blending air flap actuator 8 G M2 Blower motor 9 L

Position feedback by the blend air flap actuator

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 2589 · Applies to: 450, 451, 452, 454 · AR: GF54.30-P-6000MCU, GF83.55-P-2108MCU, GF83.57-P-2126MCC, GF07.04-P-6040MCC, GF83.40-P-2193MCC (+5 more)

The following information is transmitted to the heater/AC operating unit via CAN: Outside temperature via the instrument cluster Coolant temperature via the ME control unit The following components are directly actuated by the heater/ AC operating unit: Blend air flap actuator Air recirculation flap actuator motor The following components are actuated by the heater/AC operating unit via CAN: Refrigerant compressor via SAM control unit To prevent damage to the climate control system, the refrigerant compressor is switched off at refrigerant pressures above 28 bar. 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 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 BASIC KNOWLEDGE > CONDENSER, COMPONENT DESCRIPTION - GF83.40-P-2188MCC

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

Remove/Install

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 3221 · Applies to: 450, 451, 452, 454 · AR: AR54.25-P-2800MCC, AR68.30-P-2000MCC

1 Guide suitable screwdriver (2) between instrument panel upper section (4) and side air outlet (1) and release retaining clips (3) in upper area Carefully loosen air outlet (1) to prevent damaging instrument panel upper section (4) 2 Carefully guide side air outlet (1) toward rear out of instrument panel upper section (4)

3 Install in the reverse order

TESTING & REPAIR > REMOVE/INSTALL COMBINATION SWITCH - AR54.25-P-2800MCC > MODEL 451.3 /4

Remove/Install

1 Remove steering column cover

AR68.30-P-2000MCC 2 Unclip catch hook (3) on combination switch (S4)

3 Lift combination switch (S4) upwards from the guides (4) and remove to one side until the electrical connector (1)

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

components due to

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 3228 · Applies to: 450, 451, 452, 454 · AR: AR54.10-P-0003MCC, AR68.10-P-1040MCU

electrostatic discharge

Notes on performing repair, body work and welding on vehicles with airbags and ETR units AH91.00-P-0002- 01SM

Notes on self-locking nuts and bolts AH00.00-N-0001-01A Legal requirements on handling and storing airbags and emergency tensioning retractor units

AH91.00-P-0004-01A 1 Disconnect ground line of battery

AR54.10-P-0003MCC 2 Remove dashboard lower section (4)

AR68.10-P-1040MCU 3 Detach electrical connector (2) from kneebag (1) Installation : Make sure that routing of electrical wiring harness (3) is correct.

4 Unclip kneebag (1) from lower section of instrument panel (4) (arrows) The kneebag (1) must not be disassembled as it will then have to be replaced. Installation : If the kneebag (1) is replaced, the defective kneebag (1) has to be disposed of correctly.See: ↓Notes on disposing of airbag and emergency tensioning retractor units OS91.00-P-0001-01A 5 Unscrew nuts (6) and remove bracket (5) When replacing the kneebag (1). *BA91.60-P-1011-01C 6 Install in the reverse order

7 Check supplemental restraint system using STAR DIAGNOSIS

D00.00-P-2000- 04MCC Airbag

Instrument cluster, component description

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 3641 · Applies to: 450, 451, 452, 454 · AR: GF54.30-P-6000MCU, GF91.60-P-4102MCU, GF91.60-P-4065MCU, GF91.60-P-4108MCU, GF91.60-P-4067MCU (+5 more)

A1 GF54.30-P-6000MCU Head/thoraxbag sensor, component description A53, A54 GF91.60-P-4102MCU Frontal acceleration sensor, component description B48/1, B48/2 GF91.60-P-4065MCU Belt tension sensor, component description B48/3 GF91.60-P-4108MCU Seat occupied recognition pressure sensor, component description B48/4 GF91.60-P-4067MCU Interior lamp, component description E15/4 GF82.20-P-5221MCC Restraint systems control unit, component description N2/7 GF91.60-P-4048MCU ME-SFI [ME] control unit, component description N3/10 GF07.61-P-6000MCU SAM control unit, component description N10/10 GF54.21-P-4157MCU Weight Sensing System (WSS) control unit, component description N110 GF91.60-P-4069MCU Table of contents: Function description of supplemental restraint system (SRS)

GF91.60-P-0999MCU MISCELLANEOUS NOTES > NOTES ON DISPOSING OF AIRBAG AND EMERGENCY TENSIONING RETRACTOR UNITS - OS91.00-P-0001-01A > All models In the Federal Republic of Germany, the airbag and emergency tensioning retractor units must be rendered unusable according to the accident prevention and safety regulations and the EU Directive on End-of-life Vehicles.

Airbag and emergency tensioning retractor units must be forwarded in their original packaging, via the familiar MeRSy disposal channel (Renz), for proper and environmentally-friendly scrapping. In all countries except national regulations governing proper disposal need to be complied with. These safety precautions are necessary because pyrotechnic devices can inflict injuries when activated improperly. WIRING DIAGRAMS > OVERVIEW OF WIRING DIAGRAMS FOR SEATS, BUNKS, RESTRAINT SYSTEMS - PE91.00-P-1100MCU > MODEL 451 Wiring diagram of airbag (AB), emergency tensioning retractor (ETR) MODEL 451 to 30.8.10 PE91.00-P-2000MCU Wiring diagram of airbag (AB), emergency tensioning retractor (ETR) MODEL 451 as of 31.8.10 PE91.00-P-2000MCV Electrical function schematic for airbag (AB), emergency tensioning retractor (ETR) MODEL 451 PE91.00-P-2050MCU Wiring diagram of seat heater (SIH) MODEL 451 except 451.391 /491 PE91.30-P-2000MCU

Soft top, location of components

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 4239 · Applies to: 450, 451, 452, 454 · AR: PE54.25-P-2050MCU, PE54.25-P-2000MCU, PE54.25-P-2000MCV, PE77.39-P-2200MCU, GF77.30-P-9997MCU (+5 more)

GF77.30-P-0002- 05MCC Electrical function diagram for electrical center

PE54.25-P-2050MCU Wiring diagram electrical center Sheet 1 PE54.25-P-2000MCU

Sheet 2 PE54.25-P-2000MCV Electric wiring diagram for electric soft top

PE77.39-P-2200MCU

Overview of system components for soft top, component description

GF77.30-P- 9997MCU BASIC KNOWLEDGE > OVERVIEW OF SYSTEM COMPONENTS FOR SOFT TOP, COMPONENT DESCRIPTION - GF77.30-P-9997MCU > MODEL 451.4 Transmitter key, component description

GF80.57-P-6010MCU Instrument cluster, component description A1 GF54.30-P-6000MCU Component description for the SAM control unit N10/10 GF54.21-P-4157MCU Soft top actuation switch, component description S84 GF77.39-P-3120MCC Table of contents for function description of soft top

GF77.30-P-0999MCU BASIC KNOWLEDGE > SOFT TOP ACTUATION SWITCH, COMPONENT DESCRIPTION - GF77.39-P-3120MCC > MODEL 451.4 Location The soft top actuation switch is located in the center console. Task The soft top and rear soft top can be opened and closed via the soft top actuation switch. The actuation requests are read in directly by the SAM control unit (N10/10).

Remove ignition/starter switch

2007-2014 smart (450_451_452_454) - Workshop Repair Manual.pdf · p. 4407 · Applies to: 450, 451, 452, 454 · AR: AR54.25-P-1030MCC, AR54.25-P-1030MCU, AR80.35-P-4515MCC, AR80.35-P-4515MCU

11 Remove ignition/starter switch lock cylinder When replacing electronic selector lever module control unit (N15/5).

• not for USA AR54.25-P-1030MCC

• for USA only AR54.25-P-1030MCU Install

12 Install ignition/starter switch lock cylinder When replacing electronic selector lever module control unit (N15/5).

• not for USA AR54.25-P-1030MCC

• for USA only AR54.25-P-1030MCU 13 Install transponder coil (L11) When replacing electronic selector lever module control unit (N15/5).

• not for USA AR80.35-P-4515MCC

• for USA only AR80.35-P-4515MCU 14 Hold cable (5) on abutment (8) and press the cable (5) until it abuts in the direction of the arrow (arrow B) This ensures that the relay lever of the park pawl is in position "P" on the transmission.

15 Insert cable (5) into the adjusting mechanism on the electronic selector lever module control unit (N15/5)

16 Position abutment (8) of the cable (5), as shown, and attach and clip in retaining clip (4) The abutment (8) of the cable (5) must be pushed in until it abuts in the electronic selector lever module control unit (N15/5).

17 Position electronic selector lever module control unit (N15/5) and lock the cable (5) by twisting the bolt (7) counterclockwise (arrow D) in the adjusting mechanism on the electronic selector lever module control unit (N15/5) The control unit for the electronic selector lever module (N15/5) must be in its installation position so that the cable (5) is not mounted twisted. The marking on the bolt (7) must be aligned with the marking on the electronic selector lever module control unit (N15/5), only then is the cable (5) locked in the adjusting mechanism on the electronic selector lever module control unit (N15/5).