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:
Operating range
The system notifies the driver of another
vehicle approaching from either side when
driving in reverse. This feature helps the
driver check the rear and side areas of the
vehicle when moving backward.
If the system detects a vehicle approaching
from either side while moving backward,
it warns the driver of dangers in the
following way...
The driver’s and front passenger’s SRS frontal airbags are not designed to
deploy
in most of the following cases.
If the vehicle is struck from the side or
from behind.
If the vehicle rolls onto its side or roof.
If the vehicle is involved in a low-speed
frontal collision...