Just bought a used audi b6 a4 1.8t and the rear passenger window will go down, but not up, and i have to force the window up to get it shut. Also the rear driver side window will operate up and down normally only with the drivers window power switch, not with the rear driver's side switch like it should. I am probably going to do this myself, so anyone knows the problems and parts that would be great.

 

Have the exact same issue, but I don't believe it's the regulator... Bump for justice.