Mercedes V Klasse turn signal problem

Ugh, turn signals! I had a similar headache with my Vito. Same thing, error message popping up, the whole shebang. Drove me nuts! I messed around checking the bulb, thinking maybe it was just a broken lens or something simple like a lamp replacement. Nah. Then I started suspecting the flasher relay. Did you check the connections really well? They can get corroded and cause all sorts of weird electrical gremlins. Honestly, Mercedes electrics sometimes feel like they're designed to fail. Is it just one turn signal acting up or both?

The issue is isolated to the right-side turn signal lamp. You mentioned checking the connections. Could you elaborate on which specific connections you inspected? Were any special tools required for this process?

Okay, right side only, got it. When I checked mine, I focused on the connection right at the signal lamp itself, and also where the harness plugs into the main wiring. It's fiddly, but you should be able to get to it without too much disassembly. I just used a regular screwdriver to gently pry the connectors apart. Honestly, though, even after cleaning everything up, the problem kept coming back. Eventually, I just gave up and took it to the workshop. Best 95€ I ever spent, haha. Sometimes it's not worth the hassle when it comes to these modern electronic systems.

I appreciate the additional information. Based on your experience, I will proceed with a professional diagnosis and repair at a qualified workshop. Thank you for sharing your insights and saving me potentially wasted time on a self-repair attempt.