Subaru Forester: Instruments and controls / Horn

To sound the horn, push the horn pad.
Other information:
Before driving, adjust the inside rearview mirror so that you have a clear, centered view through the rear window. Making this adjustment before the vehicle begins moving helps ensure maximum rearward visibility.
Do not place luggage, cargo, or other objects in the rear seating area or cargo compartment if they obstruct your view through the rear window...
In addition to maintaining precise cold inflation pressure, ensuring proper wheel alignment prevents premature shoulder wear and extends total tire life.
If you notice uneven or rapid treadwear pattern development across the tire profile, have an authorized dealer evaluate and recalibrate your wheel alignment settings...