Photosensors
The mirror has a photosensor attached on 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:
Tripped sensor identification
The security indicator light flashes when the alarm system has been triggered.
Also, the number of flashes indicates the location of unauthorized intrusion or
the severity of impact on the vehicle ...
Safety
The Insurance Institute for Highway Safety crash-tested the 2008 Impreza, and
the car earned a Good overall rating — the highest possible score — in
frontal-offset, side-impact and rear crash test ...
Accessory power outlets
Power outlet below the climate control dials
Power outlet in the center console (except STI)
Power outlet in the center console (STI)
Accessory power outlets are provided below the climate control ...