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:
BSD/RCTA approach indicator light
It is mounted in each side of the outside
mirrors.
The indicator light will illuminate when a
vehicle approaching from behind is detected.
The indicator light will flash to warn the
driver of dangers under the following
conditions...
Apply the parking brake.
Shift the select lever to the “P” (Park)
position.
Depress the brake pedal.
Hold the access key fob with the
buttons facing you, and touch the pushbutton
ignition switch with it.
When the communication between the
access key fob and the vehicle is completed,
a chime (ding) will sound...