My windows would not go up and down sometimes. At first it was all the windows when you first started up the engine. Then after a few minutes you could operate the windows. So to the dealer we went. Of course we could not get it to happen while there. Next time it happened we took it in again....it did happen and they said the motors were going on the window. I replied with, "All 4 at the same time! How?" So they checked all the motors and all was fine. The problem was gone surprisingly. We went about 3 months and it started again. So back to the shop. This time they wanted to tear through the roof wiring and keep the car for days until it could be found. And it wasn't covered, I would have to flip the bill. I said no. Until today the left rear window is not operating.