Only a positive and neg. wires go to horn so when you crank it should not blow the horn. The problem it likely in the steering wheel and where you push to sound the horn.
SOURCE: horn blowing and car wont start
Same problem on 98 Jetta at about 9 yrs of age. Wiring harness was an expensive job. Dealer replaced all wires going to doors so that alarm isn't mistakenly triggered by opening doors. Dealer offered to remove alarm for a few hundred dollars, but couldn't assure us that the key fob would still open the door locks. Who wants to give up power locks? My hunch is that wire in driver's door breaks with flexing over 9 years. Could consider replacing short stretches of wire in hinge of drivers door if you're handy with a soldering iron.
SOURCE: horn starts blowing randomly
do you have a alarm on it. If so you need to disable it or turn it off. Other wise you have a short somewhere in your horn. disconnect the horn under the hood. Its usually upfront and looks llike a flat black circular device that has one wire going to it, unless you have a alarm then it may have more.
tepfy
SOURCE: When I am driving the car horn blows, without me
it sounds like it is shorting out in the steering colummn.
SOURCE: turn key....click sound, car doesn't
take it to get reprogram the key has a chip if you have a dummy key try it and see what happens i remind you it will not stay on to long
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