Oilhammer's observations are most likely the case. I have had to replace several window switches, which solved some of the problems. These are relatively easy to testl Fortunately, years ago I was able to obtain a replacement driver door wire harness replacement, which was definitely needed. I have not experienced any bad window motors yet.The passenger side window in my jetta periodically stops working. Will open half way and not go up for a few days and then will start working again.
Any suggestions where to start? Switch, broken wire, motor?