Subaru Forester: Instruments and controls / Horn

To sound the horn, push the horn pad.
Other information:
Several of the warning and indicator lights
illuminate when the ignition switch is
initially turned to the “ON” position. This
permits checking the operation of the
bulbs.
Apply the parking brake and turn the
ignition switch to the “ON” position...
Seatbelt and SRS airbag
WARNING
All persons in the vehicle must
fasten their seatbelts BEFORE
the vehicle starts to move. Otherwise,
the possibility of serious
injury becomes greater in the
event of a sudden stop or accident.
To obtain maximum protection in
the event of an accident, the
driver and all passengers must
always wear seatbelts when in
the vehicle...