My backseat window on my 2012 Mitsubishi Lancer is stuck all the way down. I’ve tried the door slam and hitting the door method. However, should I try to take the door off my self to get the window up or take it to a shop? How much would that usually cost? Also I can hear the motor running on the window so it is not a fuse or electrical issue.
If you can hear the motor turning but nothing is happening then it sounds like the regulator has broken. Repairing it requires opening the door and removing the door trim pad. There should be some YT videos to guide you through it.