Mercedes M Klasse smartphone connectivity issue

Sounds familiar. I had a similar problem with my old Volvo, though it wasn't exactly the same. The symptoms are like when you have a bad connection in the ignition system: things just don't 'talk' to each other properly. In my case, the infotainment system went haywire because of a software glitch after a routine service. Was there any recent work done on your Mercedes, particularly anything involving software changes?

Yes, there was a recent software change performed by a certified Mercedes-Benz service center. Could that corrupt the pairing process or introduce conflicts that would prevent the smartphone from connecting? Are there specific steps I can take to verify or rectify this potential software-related issue? If it's a software glitch, is it something I can fix myself, or am I looking at a trip to the workshop?

Yeah, a corrupted software change sounds plausible. Think of it like a misaligned gear in the transmission; everything grinds to a halt. While you could try resetting the system to factory defaults – usually a pain – it's probably best to get the dealer to re-flash the software. It cost me around 50€ to have it sorted. Your Mercedes is newer so it may be more complicated.

I appreciate your guidance. I will schedule an appointment with the service center to have the software re-flashed. The anticipated repair cost of 45€ seems reasonable. I was overthinking it and focused too much on the drivetrain and suspension. Turns out it was a simple software glitch. Many thanks!