GNeumann91
Black smoke and irregular engine running in S-Class (2011, petrol): Troubleshooting tips and workshop recommendations welcome
Jerking on acceleration
Engine shuts off by itself
Stalling while idling
Strong exhaust smell
Check engine light on
Poor fuel economy
Black smoke from exhaust on acceleration
Loss of engine power
Unsteady engine
(Translated from German)
4 comment(s)
Hey, thanks for your quick reply! I didn't have the engine control unit on my radar, but of course it's also a possibility. I'll definitely look into that. Can you still remember how much it cost you? Did the engine control unit cause problems again after the repair or was everything OK afterwards?
(Translated from German)
Hey, you're welcome! So, the repair cost me €1000. It's not a small amount, I know, but it was worth it. Since the mechanic overhauled the whole thing, everything has been running smoothly again. So the functional restriction of the injection has been rectified. Since then, the engine doesn't stall and there are no other problems. It feels as if the car is running exactly as it used to. So I can definitely say: after the engine control unit was repaired, everything was great again. Good luck with your car, hope this solves your problem too!
(Translated from German)
Thank you very much, that sounds encouraging. 1000 € is quite a lot, but if everything works again afterwards, I'm prepared to invest the money. I'll go to the garage first thing tomorrow morning and have the engine control unit checked. Hopefully that's the cause in my case too. I'm glad to hear that your car is now running like it used to. I hope I can say the same next time. Many thanks for your advice! See you later.
(Translated from German)
Let our mechanics help you!
Hey, I had similar symptoms with my E-Class (gasoline engine, 2008, about 160000 km run). The black smoke, high fuel consumption and twitchy acceleration were also present with me. It turned out that a defective engine control unit was the culprit. The engine control unit controls many functions in the engine, so if something is wrong, there can be a whole range of symptoms. Injectors could of course also be the problem, but I would definitely have the ECU checked. It was a serious matter, but my garage managed it well. The repair took a few days, but it varies depending on the garage. Now everything is as it was before. I hope this helps you. Good luck with your car!
(Translated from German)