is the window fully down? my window has problems going up aswell, however it always goes down fine. With my window if i take it down say half way, and it doesn't want to go back up again, i hit the top of the window down while holding the switch and it comes back up again. If your window is fully down take off the door trim, get a thin bit of wood or something u can stick down the door onto the top of the window, hold the window switch to bring the window back up and tap down on the window. see if it works.