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Horn gone crazy!

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Old Jul 25, 2011 | 02:18 PM
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Default Horn gone crazy!

Just drove back to work, and it's raining cats and dogs here. I park it, and in a few minutes, the horn starts blowing continuously. Nothng I could do, with the fob, or by starting and shutting down could stop it.
Had to pull the fuse for the horn, but it also feeds the alternator sensor, so now I get a service charging system on the DIC.
For now, I 'll leave the fuse out until it's dry. Anybody think it's just a wet short somewhere? Never done it before.
Ideas?
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Old Jul 25, 2011 | 03:34 PM
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Water?
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Old Jul 26, 2011 | 12:19 AM
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Gotta be water getting into the electrics. Had something similar happen after washing the engine bay. After everything dried out, everything was back to normal.
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Old Jul 26, 2011 | 12:32 AM
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WOW...
hope this goes away once things dry out.
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Old Jul 26, 2011 | 09:42 AM
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Could also re-install the fuse and disconnect the wires at the horn.

Yes, water intrusion very possible.

Check both fuse boxes, battery area, horn area for water.
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Old Jul 26, 2011 | 08:16 PM
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Horn relay?
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Old Jul 27, 2011 | 02:54 AM
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You could probably pull the horn relay (micro relay #34 in the fuse box) and temporarily eliminate the problem without getting the DIC message.

Check the relay for failure as well, while you're at it.
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Old Jul 27, 2011 | 07:25 AM
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I didn't think of the relay. Anyway, after a full day to dry out, I plugged the fuse back in, and all is good. Must have been water.
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Old Jul 27, 2011 | 08:17 AM
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Corvettes melt in the rain. the only water they are supposed to get is from thier bath!!!
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