Problems with the navigation system and warning light in a 2021 Mercedes Citan Diesel: Possible fault on the Flex-Ray bus?

Hi mate, I had a similar problem with my 2019 Mercedes Vito. I'm not an expert on cars, but I know a bit about them. I went to my regular garage and we checked everything. The problem was a defective control unit. Unfortunately, the whole thing cost me 10 euros, but now everything is running smoothly again. Without more detailed information about your vehicle, it's always difficult to say exactly what the problem is. Are there any specific symptoms or error messages that occur? That could help me to help you more precisely.

(Translated from German)

Hey, thanks for your reply! There are no specific error messages or symptoms other than the navigation system and the warning light. The car already has 67394 km on it and the last service was very recent. A defective control unit could really be the problem. I'm already in the process of making an appointment at my garage to have it checked. Hopefully it won't be as expensive as yours. Thanks again for your tip!

(Translated from German)

Hey, no problem, always happy to help! It's good that you've already made an appointment at the workshop. With electrical things like this, it's always difficult to say where the fault might lie. What is certain is that the control unit and the Flex-Ray bus are important parts that could be causing such symptoms. But the workshop will sort that out. And yes, I'll keep my fingers crossed that it won't be as expensive as it was for me. Let me know what you find out, I'm interested too. Good luck, buddy!

(Translated from German)

Thanks, buddy! Will do, as soon as I get back from the workshop I'll let you know. Let's hope it's nothing too bad. Bye and thanks again for your help!

(Translated from German)