I have a w220 s500l. My passenger front door controls don't work. I can't open window from passengers door nor drivers controls. Can't move passenger seat using the door controls but can adjust the seat using the rear passengers controls. The mirror works fine. I recently had 2 replace the drivers door control module as nothing worked. That fixed everything apart from passengers seat and window problem. Will this likely be due 2 a faulty passengers door module???

 

The window switches on the driver's door and passenger work together so it could be either one of the switches or the motor. I'll assume that it won't go up or down at all? Try holding your hand on the glass while pressing the button and see if you feel anything. If the seat won't adjust from the door controls either it could be break in the wiring at the door hinge. If you have some jumpers and you apply power directly to the window motor you can determine if it's the motor or switches. If you have a voltmeter you can start tracing whether there is power and if the switches are working, simple detective work.

 

Thanks!!! That is something I hadn't thought of!!!! Bad wire in the door shut. I shall investigate that further. 👌👌👌