Horn failure The horn on my 2005 Pontiac Sunfire stopped working. I'm fairly sure it's a problem with the switch (or whatever) in the steering wheel as it does work occasionally. Also, when it does work, it does only when pressing one side of the inner section of the steering wheel, not all the way around.

Chances are it is a bad clock spring. It the SRS light iluminated?

Pull the air bag module , don't recommend you do that ! Is the air bag light lit on the instrument cluster ? Horn not working an air bag light lit would indicate clock spring problem . Do you know what the clock spring is ?
How cars clock spring works

Did you check the horn relay ? Do you know what a relay is ?

VEHICLE RELAYS Operation Diagnosis

They are talking about the body control module, but I'm not sure they are right. The horn does not need the bcm to work. See diagram below. The horn relay is energized by the horn switch on the steering wheel. The switch also signals the bcm, but that is not used to power the horn.


The turn signal does not use the bcm at all. The problem there may be the switch or the wire. See diagram below.






The instrument lights DO REQUIRE the bcm, but can be rewired to bypass the bcm. The gray wire from the bcm in the diagram below powers the instrument lights. You can cut the gray wire and splice it to the brown wire from the multi function switch. Find the brown wire coming out the bottom of the steering column, skin some insulation off the wire and verify it has 12 volts when the parking lights are on. Do not cut the brown wire--just attach the gray wire to it. You will not be able to dim the lights, but they will come on.

HI. The first check point will be the fuse. make sure that the fuse filament isn't severed. This is common. If the fuse is in good condition, move onto the wiring and horn device. There may be a disconnection at the horn connection point. You can also test the connection wires for shorts, as well.

More than likely the actual horn may need to be replaced if the wiring and fuse prove to be in good condition. A basic multimeter can be used for the wire test, if you have one.

NOTE: In rare cases, the horn switch in the steering wheel could be the culprit, although, highly unlikely in most cases.

Hello: It could be a failed horn. the best way to check is to get a test light and connect one end to the green wire at the horn connection and the other end to a good ground, have helper press horn. if test light lights up the horn has failed. also you might check the fuse box under the hood and see if there is a horn relay. if there is a horn relay then look to see if there another relay like it. if there is one swap the relays and see if the horn works.

fuse probably needed for other circuits. Take the horn relay out of its socket in the engine compartment relay box. Thanks for using FixYa.

• Check the fuse first and if the fuse is good checked the connection of the wire in your horn button and make sure that the negative wire is properly connected.
• After you perform this and still the same check the horn maybe the connection on the horn is not properly connected.
• If you have additional questions feel free to reply to this solution.

I’m happy to assist further over the phone at https://www.6ya.com/expert/ramy_d9e7ebea3891f482

Under your hood there is a box that looks like a fuse box. It contains relays. Replace the one marked horn.

On the steering wheel. There should be little horn symbols on your steering wheel in the center.

The HORN Is a GROUND CONTROLLED BUTTON you need to FIRST Check under CENTER STEERING WHEEL Cover to see if it has a Bad Commectiot, After Asuring this there Is c CLOCK Spring UNDER Steering Wheel that is Fairly Common for Failing.

The FOB / Remote Utilizes a Different Part of the Curcuit to Activate Horn, I Hope this Helps you With your Problem as Im Sure of All that I Advised. Remember to RATE ME !!