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Three usual suspects: #1 the switch contacts in the steering wheel can wear and get stuck together, or the wire running through the switches, roll connector (connects the part of the steering wheel that turns to the rest of the car that doesn't) to horn gets frayed and grounded or #2 the remote keyless entry (RKE) module is defective or #3 the wire from the RKE module to the horn module has frayed and grounded. Anything that grounds the "B" terminal on the horn will cause it to sound.

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17y ago

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