2012 Fiat 500 vehicles may experience an intermittent horn actuation or a sticking horn. This TSB applies to vehicles built with rear window wiper/washer and instrument panel parts module and without speed control, built before May 2, 2012.
Disconnect and isolate the battery negative cable. Wait two minutes for the system capacitor to discharge before further service.
Remove the drivers air bag (DAB). Refer to the detailed removal procedures available in DealerCONNECT > TechCONNECT under Service Info > 10 – Restraints > Air Bag, Driver > Removal.