Category: Smart 1 & 2 Forum

Servus Friends, My Smart 451 MHD 2008 45000km doesn’t start at all. He doesn’t jerk, doesn’t let himself be dragged but the corridors go in. The U0100 error is gone. I’m perplexed. Do you have any ideas?

Moin dear user, We have a problem with our Smart 451, BJ 2012. At certain intervals of 2-4 weeks, the vehicle will not take any more gas for about 30 seconds shortly after starting (and driving from a few meters) and a knocking noise from the rear can be heard during this time. After that, the vehicle will continue normally. I was already at several workshops that could not solve the problem. Errors will not be saved, innumerable times this reading was unsuccessful. he: fuel pump, actuator, crankshaft sensor, camshaft sensor, cable break fix, starter alternator changed, control unit changed (error was current voltage alternator), great service, battery changed. Maybe here someone has had the same problem times someone knows the problem .? We don’t get any further here another video where the knocking noise is well listening. ( in this video the car also went out therefore the motor control light – this was After starting out again and no error was found when reading )https://youtu.be/SPwt3PSH7vY?si=7kDLKaOCPt6bJt_k Greetings

Hello people I have a question for you. I borrowed my smart from an acquaintance, he then called me and said the smart jumps no more to those who have tried to bridge it with and have probably changed it also once plus and minus. Now nothing more you can open it and close it more lights up but nothing more in the display. I also tried another control unit nevertheless nothing as if he does not pass any power to the ECU. Can you tell me what I still try kan Thank you very much to the people who can tell me about this.

Good evening, I have a problem with the gearbox! In the cold condition the vehicle can be started normally and switch, however, when the car is warm we can switch on once after I switched N so that I drive backwards nothing works anymore. Try to start the car again the car also does not jump on only after it is cooled down everything goes back normal can someone help me? Thank you

Dear Smart community, my 451 convertible (84 hp, year 2009) has been having problems since the day before yesterday. When I start it, it starts without problems, but then when I release the key, it makes quite ugly noises and then goes out loud and loud again. If you repeat this more often, the starting sometimes works. With warm engine the problem does not occur. But the next morning when the engine is cold, it is the same game. Can that be that the starter doesn’t really “run out” or like s Do you want me to describe that? Has anyone had this before and if so, what was that? THANK YOU THANK YOU!!!

Good morning, I had a little accident with my smart last one (nothing happened, just right at the front the plastic is splintered…) And am now thinking about whether I should give him a new “look”. Would like to foil him, but have no experience in this area at all. Can you possibly help me, and tell me what to pay attention to, where to buy foil and tool for it, and possibly send me a link with instructions? Do you have the search radio yourself? As a foil I thought with me that I would like to use some in carbon optics, only how much I need of it and what else I need to take into account, I don’t know :-/ Thanks already for your help! VG from Düsseldorf Jerorme

Hello together! I have a problem with my 451 cdi, EZ 2011, 54hp. After he started to burn cooling water via the AGR cooler, I removed the cooler, shut down the AGR and have it programmed out of the control unit. To be sure, I have also renewed the cylinder head seal. Since this action, within a few days, one glow candle after the other is goodbye. Externally, they are unharmed, but have an infinite through resistance. Rzensteuergerät delivers about 4 volts and glows up to a water temperature of 50 degrees about three minutes after. Is there the error? The injectors are tested and found to be good. Control time also fits. Does anyone have an idea? Many greetings

Hello together, I have a problem with the central locking of my smart. Sometimes the driver’s door does not open when I unlock at the touch of a button – it only opens the passenger’s door. Even the turn signals don’t give a signal. In the workshop I was told that the lock has to be replaced on the driver’s side. What I find strange, though: the trunk can’t be opened either, but only when I open the passenger’s door. The workshop said that there might be another At the moment it usually works again, but I have to press the button several times. Did any of you ever have a similar problem?

Hello, 2024 I changed the brake line from the ABS hydraulic unit to the rear to the two wheel brake cylinders on my 451 from 2007. Since yesterday the little one has again incontinence and it drips brake fluid at the bottom left, also the container is empty and the brakes at the rear are cold. The question is, which line is now gammelted. Outside it is cold, so I would like to order new lines in advance and not like to put myself under twice. any of you have an overview of the product numbers of the different brake lines or even an explosion drawing to locate the defect in this way? Thank you!!!

Hello men ! I have a Smart 451 with a standard radio . Now the battery should be changed soon and then the R. is dead ! How can I find the code ? Have all the papers – also radio user manual – aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa