SOURCE: My 99 oldsmobile alero started honking on its own
ok its one of 2 things
1- behind the steering wheel between the column,there is a part called the sir coil,it allows the steering to turn with out getting the wires inside tangled,,this SIR COIL could be bad and making contact when it should not and causing the horn to sound,,,,you would have to remove the steering wheel to remove this part and its easy to mess this up,i would rec a repair shop to fix this,
2-inside the steering wheel is the air bad,which also contains the horn buttons inside,sometimes the air bag swells up and gets hard and applies pressure on the horn buttons inside and cause it to soulnd the horn,,if thats the case you will need a new air bag,,,i would also rc a repair shop for this as messing with the air bag system you can set the air bags off just with static electricity,,,,
but one of those should be your issue i think,,,there is really not way to test those parts unless your a dealer,so i cant tell you horn to test it,you need the special load tools and stuff,,,
Take care
SOURCE: where is the horn located
It is on the drivers' side firewall, mounted almost directly behind the brake fluid reservoir.
Testimonial: "Thank you sooo much. I have looked and looked and couldn't find it."
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