My drivers window stopped working once and I eventually had to remove it completely. Whilst it was out, I was pleasantly surprised to find that the entire motor is basically servicable. So I took it apart, cleaned it, greased it and put it back. It works perfectly now.

The only window not working is the passenger side rear. But it doesn't work either with the switches in front or in the door itself. What are the chances of the switches being the culplrit?

BTW, I cleaned my W123 switches too when I got them. NONE of the windows worked when I got them. I took apart the entire switches, cleaned them, and until the day it drove off to another owner, EVERY SINGLE ONE worked.

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1987 300TD
1984 300D
755,000 KM and going strong
BC Canada