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...
If a door or the rear gate is not completely
closed, the interior lights will remain
illuminated as a result. However, several
lights are automatically turned off by the
battery drainage prevention function to
prevent the battery from discharging...