R Klasse Air Conditioning Problem

Interesting. I had a similar issue with my R Klasse. The rear AC stopped working, and it was a bad connection. Have you checked the cable and plug connection to the rear ventilation flap motor? That's often the problem.

Thanks for the tip! Where's that connection located? Can I easily check it myself, or do I need to take things apart?

It's near the rear climate control unit. You might be able to get to it, but I'd recommend a workshop for system diagnostics. My problem was a defective plug connection. The part isn't expensive, but finding the issue can be hard. Better safe than sorry. The repair and error memory deletion cost me 95€.

Okay, that sounds like good advice. I'll take it to a shop and have them check the connections first. Hopefully that fixes it. Thanks for the help!