How do you remove rear view mirror button from mirror on 1997 Audi A8?

To remove the rear view mirror button from a 1997 Audi A8, first, ensure the vehicle is off and the key is removed. Locate the small set screw on the underside or back of the mirror arm; use a Torx or Allen wrench to loosen it without removing it completely. Gently slide the mirror off the mounting button on the windshield. If needed, use a plastic trim tool to carefully pry the button away from the glass.