Auto-Dimming Mirror Inspection

WARNING: This page is about a different car, the 2004 Mazda RX-8. However, it is still accessible from the selected car via links, so may be relevant.

Cover the day/night sensor on the back of the mirror with a piece of black paper or cloth.
In a well-lit area, shine a light at the mirror to simulate glare from vehicles to the rear. Verify that the mirror dims automatically.

If not, replace the auto-dimming mirror.

NOTE:

The mirror will dim within 2 min if testing for the first time.