M Klasse Sunroof Problems

I had a similar issue with my M Klasse. The sunroof system can be pretty sensitive. Mine acted up after coding changes. Sounds like a classic sunroof not initialized error. The sunblind getting stuck is a major clue. Have you checked fuses?

Fuses are fine. What do you mean by sunroof not initialized? What coding changes are you talking about? I did some stuff with the interior lights, could that be related?

Sunroof not initialized basically means the sunroof system's lost its settings or memory of where it should be. Think of it like a computer that forgot its own programming. Even seemingly unrelated coding changes can sometimes mess with other vehicle systems. The sunroof system is controlled by a computer module, so any electrical work or coding changes could potentially cause issues. I'd suggest a sunroof reset or sunroof calibration, but you might be better off taking it to a workshop. They can run a diagnostic and reinitialize the sunroof properly. It will be much cheaper than doing more damage yourself!

I took your advice and went to a workshop. Turns out the sunroof just needed to be recalibrated after the coding I did. They ran a quick sunroof reset and everything is working now. Cost me 75€. I really appreciate the help!