This is in the right rear door - the door sustained some damage when sideswiped but the window has been working fine until today. Now operating the switch for up/down movement makes the motor run until it hits a limit switch in both directions but the window is stuck in the fully open position with about 1/4 " showing.

Is there some kind of anchor or frame that the glass panel is attached to that could have broken loose?

How big a job is it to gain access to the works by removing the interior trim?

Any pointers appreciated.