Auto-dimming function
The auto-dimming function is an anti-glare capability which automatically reduces glare coming from headlights of vehicles behind you.
By pressing the power button, the autodimming function is toggled on or off.
When the auto-dimming function is on, the function indicator will illuminate in green. Even with the mirror in anti-glare mode, the mirror surface turns bright if the transmission is shifted into the “R” (reverse) position. This is to ensure good rearward visibility during reversing.

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.
NOTE
When cleaning the mirror, use a paper towel or similar item dampened with glass cleaner. Do not spray glass cleaner directly on the mirror surface. By doing so, the sprayed glass cleaner could enter the inside of the mirror housing. That may cause a malfunction in the mirror.
See also:
Vehicle identification
Vehicle identification
1) Vehicle identification number
2) Emission control label
3) Tire inflation pressure label
4) Certification label
5) Vehicle identification number plate
6) Model n ...
Modification of your vehicle
CAUTION
Your vehicle should not be modified other than with genuine SUBARU parts and
accessories. Other types of modifications could affect its performance, safety or
durability, and may even vio ...
Reporting safety defects (U.S.A.)
If you believe that your vehicle has
a defect which could cause a
crash or could cause injury or
death, you should immediately inform
the National Highway Traffic
Safety Administration (NHTS ...
