Subaru WRX & WRX STI Manuals 2015 WRX & WRX STI Owner's Manual | Page 241
3-116 Instruments and controls/Horn Horn To sound the horn, push the horn pad.
Subaru WRX & WRX STI Manuals 2015 WRX & WRX STI Owner's Manual | Page 240
Subaru WRX & WRX STI Manuals 2015 WRX & WRX STI Owner's Manual | Page 242