Photosensors

Photosensors
The mirror has a photosensor attached on both the front and back sides. During nighttime driving, these sensors detect distracting glare from vehicle headlights behind you and automatically dim the mirror to eliminate glare and preserve your vision. For this reason, use care not to cover the sensors with stickers, or other similar items. Periodically wipe the sensors clean using a piece of dry soft cotton cloth or an applicator.
See also:
High beam indicator light
This light shows that the headlights are in the high beam mode.
This indicator light also illuminates when the headlight flasher is operated. ...
If the light is blinking
If the light is blinking while driving, an engine misfire condition has been
detected which may damage the emission control system.
To prevent serious damage to the emission control system, you sho ...
Hill Holder indicator light
WARNING
If the Hill Holder indicator light does not illuminate even when the Hill Holder
switch is pressed to activate the Hill Holder function, the electronic parking brake
system may be malfu ...
