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:
When the following messages are displayed
If one of the following messages is displayed while operating the CD player,
determine the cause based on the following information. If you cannot clear those
messages, please contact your SUBARU ...
If the light illuminates steadily
If the light illuminates steadily while driving
or does not turn off after the engine starts,
an emission control system malfunction
has been detected.
You should have your vehicle checked by
...
Models with SRS airbags and lap/shoulder restraints for driver, front passenger,
and window-side rear passengers
Your vehicle is equipped with a supplemental restraint system in addition to
a lap/shoulder belt at each front seating position and each rear window-side seating
position. The supplemental restrai ...
