The driver's side window keeps jumping off its track.
Hello. The only way to see which part has failed to cause the window to come off-track is to remove the door panel for a visual inspection. There could be a bolt, or arm, that has broke or come loose, allowing the window glass to fall off-track. Inspection and servicing of the window should be performed by a mechanic to avoid injury, since there will be many moving parts made of metal and plastic.
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