Mercedes M Klasse Sun Blind Problem

A defective sun blind motor is plausible, given the symptoms and error code. Before condemning the motor, have you checked the wiring and connections? A loose or corroded connection could mimic a motor failure. I've seen similar issues where a simple wiring fix resolved the problem. Does the error code give a more specific indication?

Wiring was my first thought, but tracing it is difficult without a diagram. The error code is generic, pointing towards a 'sun blind malfunction'. Any tips on pinpointing the wiring issue before I assume the motor is kaput? I'd like to avoid a costly repair if it's just a loose wire.

Given the generic error code and the difficulty tracing the wiring, further diagnosis might be best left to a workshop with the appropriate tools. While a faulty wire is possible, a failing motor aligns with the symptoms. A professional assessment would be advisable to avoid causing further damage to the car interior or window visor components.

I appreciate the input. I took it to a workshop. They confirmed it was the motor. It cost me 330€ for the repair, but at least it's fixed. Thanks for confirming my suspicion. I will mark this as resolved.