Want this question answered?
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Figuring out what's causing it not to work would be the first step.
* Remove the front bumper fascia * Unplug the horn electrical connector and remove the bracket bolt
You will have to determine what is wrong before you can fix it. Check the horn itself, check the horn relay, the fuse, the horn contact points in the steering wheel and wiring.
Check for corroded wiring near the horns or along the quarter panel in the driver side.
If the fuses are good on a 1996 Jeep Cherokee and the horn still will not work, check the horn relay switch on the passenger side fender wall inside the engine compartment. Also check to make sure that the horn is hooked up properly.
To fix the horn on a 1988 Camaro, check the horn fuse first. Then check the horn relay, wiring, horn, and switch to find the problem.
The only way to fix the Volvo-503 code is to take it to the dealership and have them fix it for you.
The horn on a 1997 Acura Integra uses one wire. When a horn stops working it is usually due to a bad fuse. To fix the horn replace the fuse labeled HORN.
Check the horn fuse, and connector on the horn
Take to someone who can fix it
buy a new horn and install it