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:
When the system monitors that the driver
may be inattentive, it warns the driver.
When the inattentive driving warning activates,
the buzzer sounds and an interrupt
display appears on the combination meter
display.
When the EyeSight system has detected a
vehicle ahead or obstacle in the forward
direction, the inattentive driving warning
may activate at earlier timing than usual...
The sensitivity of the high beam assist
function can be lowered by performing the
following operations.
Before turning the ignition switch to the
“ON” position, set the light control switch to
the “AUTO” position and push the signal
lever forward (high beam position)...