smart_fortwo_transmission_fluid_flush¶

2 excerpts.

Excerpt¶

youtube.com/performance_autohaus/smart_fortwo_transmission_fluid_flush · p. 1 · Applies to: 450, 451, 452, 453, 454, #1, ebike

smart42 451 we are going to be doing a transmission fluid flush this is part of the 30k service this vehicle has 30 560 miles on it today yes we are doing quite a bit of services on it the only tools you will need is an eight millimeter Focus my little friend you're going to need an eight millimeter hex anyways we've got the two new bolts from Mercedes and we also got this Castrol manual bot 328 this is the exact stuff you need I bought this at Mercedes part number Alpha zero zero one nine eight nine five one zero three one zero this is exactly what you wanted to use yes this transmission may be transmission maybe automatic but it's an automated manual which means the internals the internals of the transmission are actually a manual gearbox here's how it's gonna work you're going to find the fill plug and the drain plug on the passenger side of the vehicle this is the drain plug on the driver's side of the vehicle there is the fill plug right there so this might sound counterintuitive but you always remove the fill plug first the reason for that is me is this if you remove the drain plug and you drain all of your fluid and then you put the plug back on you're like okay now I'm going to fill it and then you remove the fill plug and you can't you strip the threads and you can't fill it guess what now your transmission has no fluid and you can't go anywhere so you always break this one loose first make sure you can pull this out and then you pull the drain plug and only then do you break it and remove the fluid so what you want to do is simple you're going to put my eight millimeter in there and we will break not break like that but basically we're gonna remove the fill plug itself first and then the drain plug but make sure that you have the tool seated all the way seated all the way into the nut completely before you try and attempt to remove it because this metal I didn't see a Crush Washer and Mercedes told me that they didn't know of any Crush Washer involved so this bolts on directly no Crush wash involved so I'm assuming this aluminum itself the bolt itself deforms and becomes the Crush Washer that's why it's so tight so now that we got the drain out now we can pull I mean we got The Fill plug out first now I'm going to go and get the drain plug out and we're going to drain the sucker and get going they're the drain plug because I put it in all the way unlike what I did last time like a buffoon this time I got it in there all the way so it came out quite easy basically want to do the same thing as the engine oil remove this all the way let everything drain that's not that clean 30 000 miles on this vehicle that's probably the original transmission fluid so it's a perfect timing for me to do the 30k service this doesn't look like it's got any junk on it I don't think these are magnetic at all but there's the fluid not much vehicle is currently jacked up so I'm going to lower it to allow all of it to drain before it closes up so these bolts get torqued to 43 newton meters which in the Americas equivalent is uh 31.7 foot-pounds which you can see I've done here exactly so at this point the pan should be receiving mineral oil because the transmission should have been done dripping out so what we're going to do is we're going to plug it quite simply no thread lock no nothing it didn't call for anything along those lines so just finger tight dry all this off and come back in here with our torque wrench of 31.7 foot pounds or pound feet don't kill me I don't know how you say it and I personally don't care 31.7 shouldn't be that difficult that's it drain plug is done at this point we can go ahead and fill our bot 328 fluid and the way we're going to do that is put something like this it allows you to just screw it on and just pump and it's going to suck the fluid out of the bottle out the tube and into the full side so that's all we're going to do here now that we have our little traction here wait it's kind of difficult to show you but basically we're gonna shove this tube into the fill side right here right over there and we're going to pump this and that's exactly how much fluid you're going to need right there on screen so

Excerpt¶

youtube.com/performance_autohaus/smart_fortwo_transmission_fluid_flush · p. 2 · Applies to: 450, 451, 452, 453, 454, #1, ebike

I've already done the two bottles and the third one I've done half the bottle and as you can see it's slowly pouring out the capacity of this is right at around 2.5 quarts so there I pumped it a little more and it's pouring out so when the vehicle is level keep that in mind so I dropped the vehicle all the way back down it's completely level you can technically fill it until it starts to pour out of the fill hole up here like this that's when you know it's full so at this point I'm going to stop I have that much extra I'm going to pull out the a little fill hose let it drain into the pan let that finish draining out and it should be perfectly level so when this stops draining that's when I'm perfectly at 100 proper fill level and then I'm going to put in the final the secondary brand new fill Port well I put the drain Port now I'm going to reinstall the fill port at 31.7 pound feet which is 43 newton meters I believe it's whatever the torque setting you had at earlier and then that should be it and the transmission is completely done it's been a little bit here and the transmission is pretty much down to just drip so at this point we're going to go ahead and take our brand new fill port and we're gonna plug it up so now that the transmission is completely full 31.7 pound feet is what you want we lifted it just a little bit so give me more room to move my torque wrench that's 31.7 completely done at this point you want to clean all this up but this is what the transmission fluid looks like after 30 000 miles so I know that Mercedes says it is a lifetime fluid but look at that yourself and tell me wouldn't you rather just change it it's not that expensive and as you can see with this video is quite easier to do so that's it with the transmission fluid we're gonna have just a little bit left and we're going to keep this because it doesn't go bad when it's not going through heat Cycles I plan on changing the engine oil every 3000 and the transmission fluid every 10 000 simply because I can it's easy and it's peace of mind but that's it I hope you learned something today and have a nice day