Error message in the cruise control of the Citroen DS3 (2012 model, diesel): Experiences and suggested solutions wanted

Hey, I'm not a mechanic, but I know the problem well. I had the problem myself with my Citroën C4 (2009 model), also a diesel. I had the engine control unit replaced at the time because it was defective. Among other things, it controls the cruise control, so it could well be that your problem is related to this. This may well be a serious fault and can severely affect the drivability of the vehicle, so it's better to have it checked as soon as possible. Don't wait too long, take the car to the garage and get it checked. Hope this helps you a bit, it definitely cost me time and nerves back then.

(Translated from German)

Thanks for the helpful tip, I could definitely consider the engine control unit. Do you happen to remember how much you paid for the repair back then? And have you had any additional problems since then that have come up afterwards? Just asking to know what I should be prepared for. Thanks again!

(Translated from German)

Hey, no problem, you're welcome! Well, back then I paid €1000 to have the engine control unit repaired, so it wasn't really a cheap job. But after that, the car ran like clockwork and I had no more problems with the cruise control, so I didn't have to visit the garage again. It's clear that you want to play it safe. But I hope you get the problem under control quickly and get the DS3 running again! Good luck with that.

(Translated from German)

Thanks for the quick reply, that's really helpful! 1000€ isn't exactly a lot, but if it makes the car reliable again, then it's probably worth it. Especially if no further problems occur afterwards. I will also bring this up with my garage and hope they can handle it the same way. Wish me luck and thanks again!

(Translated from German)