| might be switches, i cleaned some out on my 525I once and it works fine. i have had two motors go out in 1990 525I, one i fixed the drivers side<<very important. the other was the rear driver side.<<< not to worried about that. the 325E windows are going good. only thing is when i continue to roll up drivers side window when it is all the way up it continues to click over as if it wants to continue to go up further, even though thats not possible. im not complaining, cause it works and only happens when im rolling up the window and finally getting to the close position. just others that get in the car and start rolling it up tend to not know that. its an annoying clicking sound | 
