Diagnostic System Check
- Turn ignition switch to RUN position. Move gearshift lever into Park. Move mirror switch to maximum position, if necessary. Cover ambient light sensor (windshield side of mirror) with a dark cloth. Shine light on headlight sensor (on mirror side). Mirror should gradually darken.
- Move gearshift lever into Reverse. Mirror should gradually lighten to a clear state.
- Move gearshift lever into Park. Mirror should gradually darken.
- Remove cloth and light. Mirror should gradually lighten to a clear state.
- If vehicle is equipped with compass, turn on compass. Compass direction display should be on.