The first culprit we recommend checking is the door’s fuse. You’ll find it in your engine compartment fuse box. Check to see if it’s blown and simply replace it if so.
If it’s not the fuse, check the door tracks. Sometimes, these tracks can get gunked up and need a good cleaning and some lubrication to work properly again. But if neither the fuse nor the door tracks seem to be the issue, you’ll want to perform a hard reset. Here’s how: