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:
Vehicle Dynamics Control OFF indicator light (yellow)
• This light illuminates when the Vehicle Dynamics Control OFF switch is pressed (except STI).
• This light illuminates when the Vehicle Dynamics Control mode switch is pressed for more than 2 second ...
The Inside
While it's possible to get fairly comfortable in many cars, it's not every
day that you feel like everything is right in terms of your driving position,
and that's how I felt in the Impreza 2.5GT. ...
ABS warning light
The ABS warning light illuminates when the ignition switch is turned to the “ON”
position and turns off after approximately 2 seconds.
This is an indication that the ABS system is working properl ...