Originally posted by Ockman
According to them the rear windows are heavy and if the windows are not used regularly the window regulator fails. In fact before I could finish describing the probelm the service tech said "rear window right? We always have a problem with the rear windows in this model."
I agree. My brother has a 98 E320 with same exact rear passenger-side window. He had the regulator replaced once already and last week he went to see the dealer for same reason again... he hardley lowers the window... After reading your post, I'll tell him to do it on regular basis..