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:
Features
As of its launch, the 2012 Impreza's starting price is unchanged at $17,495
for the sedan ($500 more for the hatchback in all cases), but a comparison shows
a few things have been sacrificed — mos ...
Corrosion protection
Refer to “Corrosion protection” F10-4. ...
Repeating
Repeating is operated in the same way a CD is played. Refer to “Repeating” F5-28.
Each time you briefly press the “RPT/ RDM” button, the mode changes in the following sequence.
...
