Is there a way to test the anti-glare rearview mirror? I have it set to auto and tried shining a flashlight in the front sensor but it doesn't seem to do anything. Also, why is there a sensor on the back of the mirror?
this is how these things work. front sensor bright, rear sensor bright = daytime. no darkening.
front sensor dark, rear sensor dark = night, no one behind you. no darkening.
front sensor dark, rear sensor bright = night, glare behind you. mirror darkens.
to test this, shine a flashlight at the mirror, but at the same time, use your finger to cover the front sensor. oh, and make sure the switch is on auto.