The three passenger windows quit working. They wouldn't stay up either. Evidently there is some kind of cable something or other in it, and that came apart and got all knurled up in there. I don't know cuz its my x's car and I never took the panel off to look at it. But anyway, the driver window is fine, the other 3 are not working and one has a wedge holding it up.
Three of the four window regulators failed. Metal wire broke on all three. 50-70 dollar part. Paid dealer $500 to replace the first one. Did the second one myself and it took 1 hour 30 minutes, only 15 minutes to replace the third one. Found a great instructional video on youtube.