Subaru Forester: Light control switch / Sensor for the auto on/off headlights

The sensor is as shown in the illustration.
CAUTION
If any object is placed on or near the
sensor, the sensor may not detect
the level of the ambient light correctly
and the auto on/off headlights
may not operate properly.
High beam
Low beam
When the headlights are on high beam, the
high beam indicator light on the
combination meter is also on...
Other information:
Day
Night
Adjust the rearview mirror before driving with the day/night lever set to the Day position (1). This provides the clearest rearward visibility during normal daytime driving...
Before driving, adjust the inside rearview mirror so that you have a clear, centered view through the rear window. Making this adjustment before the vehicle begins moving helps ensure maximum rearward visibility.
Do not place luggage, cargo, or other objects in the rear seating area or cargo compartment if they obstruct your view through the rear window...