Audi A3 Hybrid electronics defective again and again problems

Hey, I had similar problems with my 2016 Audi A4 (also petrol). In my case, it was actually the engine control unit that was faulty. The engine kept cutting out, the ABS and ESP were cutting out and the electronics were going crazy. At the workshop, they replaced the engine control unit and reloaded the software. This was definitely a serious matter, as the control unit regulates many functions in the car. After the replacement, everything worked perfectly again. Sounds like it could be similar for you. I would recommend you have the engine control unit checked. Good luck!

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Hey, thanks for your reply! Your case sounds really similar to my problem. Do you remember how much you paid to replace the engine control unit back then? And has anything come up again since then or is everything running smoothly again now? Best regards!

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Hey, sure, I still remember! I paid a total of €1000 to replace the engine control unit. It was quite a lot of money, of course, but since then the car has been running perfectly again. The fault with the alternator was also rectified straight away, which was really important because the electrics had gone completely haywire. So no more problems since then, I would say. It's really worth having the engine control unit checked by a specialist! Hope this helps you. Good luck and I hope your A3 is running great again soon! Best regards!

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Hey, thanks for the info! That at least gives me a concrete direction. I'll take my car to another mechanic soon and have the control unit checked. Hopefully this will also clear up the problem with the alternator. Really annoying with something like that... Wish me luck that it won't be as expensive as yours! Thanks again and if my Audi A3 runs smoothly again, I'll let you know. Best regards!

(Translated from German)