Every winter, my 2004 X90 has a problem with the driver side window not staying on track. When the weather turns cold, the window does not go all the way down and will not close as it should. The mechanics of the window appear to malfunction when trying to close the window; it almost seems as it the power propelling the window up is dying out. I have had this problem addressed on three separate occassions, every year since owning the vehicle and the problem has returned. The dealership has done nothing to investigate the underlying cause of the problem; all they do is recalibrate, reset the window.