March 6, 20178 yr my horn stopped working i pressed the rear window heater switch and the horn started working again and that happened 2 days before the mot was due my airbag light is also on 7.5k miles apart from the hassle because in 40 years of driving i never use the horn lol
March 6, 20178 yr Hi...welcome to the Forum Sounds like a wiring or body control fault....or could even be a poor earth. Either way, I would take it to an Auto Electrician to check out. I very rarely use the horn either...don't often need to. Cheers Trevor
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