Navigation and audio system failures in the 2008 Mercedes ML Class: experiences and solutions

Hey, I had a similar problem with my 2011 Mercedes E-Class diesel a few months ago. I had a faulty telecom control unit which caused problems with the sat nav and audio system, similar to what you describe. The good news is that although it was a bit complicated to fix, it wasn't a serious problem. In my car, it was necessary to replace the entire control unit and then everything worked perfectly again. Hopefully this will help you and you'll have better luck with the mechanic this time! Good luck!

(Translated from German)

Hey, thanks for your reply! Good to know that it's nothing serious. Replacing the control unit sounds expensive, but if it fixes everything, then it's certainly worth it. Do you remember how much you paid for the repair? And have there been any other problems with your car since then? Thanks again for your help!

(Translated from German)

Hey, I'm glad I could help you! I paid the mechanic €765 to repair the telecommunications control unit. Yes, it was quite expensive, but since then I've had peace of mind and all the problems with the sat nav and audio system are gone. By the way, I had the same suspicion as you about the aerial. I also had it checked, and lo and behold, a fault in the radio reception signal was discovered and rectified. Since then, everything has been running perfectly again at the mechanic. So it's best to have both checked. Good luck!

(Translated from German)

Hey, thanks a lot! 765 to repair sounds a bit expensive indeed, but if it solves the problem permanently, I think it's a price you can pay. I will also make sure that the mechanic checks the antenna as well. I am relieved to know that there is a solution to the problem and hope that my visit to the mechanic goes smoothly. Thanks again for your help!

(Translated from German)