Subaru WRX & WRX STI Manuals 2012 Impreza WRX & WRX STI Owner's Manual | Page 166
3-48 Instruments and controls Horn To sound the horn, push the horn pad.
Subaru WRX & WRX STI Manuals 2012 Impreza WRX & WRX STI Owner's Manual | Page 165
Subaru WRX & WRX STI Manuals 2012 Impreza WRX & WRX STI Owner's Manual | Page 167