Subaru Forester: Instruments and controls / Horn

To sound the horn, push the horn pad.
Other information:
Accessory weight
The combined weight (in excess of
those standard items which may be
replaced) of automatic transmission,
power steering, power brakes,
power windows, power seats, radio,
and heater, to the extent that these
items are available as factory-installed
equipment (whether installed
or not)...
Occupant detection system sensors
The occupant detection system sensors
are installed between the seat and seat
rails, and monitor the physique and posture
of the front passenger. Using this
information, the occupant detection system
determines whether the front passenger’s
SRS frontal airbag should be deployed
or not...