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:
Front turn signal light
It may be difficult to replace the bulbs.
Have the bulbs replaced by your SUBARU dealer if necessary. ...
Use with a cigarette lighter (if equipped)
To use the accessory power outlet below the climate control as a cigarette lighter socket, purchase the cigarette lighter plug, which is an optional accessory. A cigarette lighter plug is available fr ...
If the light illuminates constantly
If the light illuminates constantly 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 an ...