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:
..
CAUTION
Do not expose the remote transmitter
to severe shocks, such as
those experienced as a result of
dropping or throwing.
Do not take the remote transmitter
apart except when replacing
the battery.
Do not get the remote transmitter
wet...