Question about 1998 Cadillac DeVille

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1998 cadillac horn goes off randomly

Horns goes off while driving or the car is parked pressing on the horn turns it off

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  • 103 Answers

Sounds like a bad horn button which is actually part of the airbag. Replace your airbag. They're cheap on e-bay and it's not hard to do. Just make sure you disconnect the battery before doing any airbag work.

Posted on Mar 21, 2014

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Posted on Jan 02, 2017

jeremythious
  • 37 Answers

SOURCE: Horn in 1990 Cadillac Seville doesnt work

If you hear the relay clicking,and even faint horn, check the connections on the horns themselves, there are probably two. If they seem okay then take a piece of wire and jump from +power to the horn terminal. Be prepared because if it works it will be very loud, and I know more than one person who's hit his head on the hood doing this. If it doesn't work, replace the horns. Hope this helps. Cheers.

Posted on Feb 08, 2009

  • 1374 Answers

SOURCE: my onboard computer is shot car will start but

Find the horn and pull the electrical connectors off of it.

Posted on Mar 15, 2010

  • 834 Answers

SOURCE: 1998 cadillac, the horn just went off 3am in the

I have a 1977 Cadillac Seville and it does the same thing, and when the outside temperature drops below 65 degrees the horn will sound continuously until either the horn relay or the horn fuse is removed.

The problem is in the horn pad on the steering wheel, and the contact plates inside of the horn pad are too close together (a manufacturing defect) and when the temperature drops down to a certain degree then the horn pad will contract and cause the metal contact plates inside of the horn pad to touch and make contact, and it is same thing as if you were pushing on the horn pad.

I have also heard of the exact opposite happening and when the temperature gets too hot the horn pad will expand and cause the metal contact plates to touch and make contact and activating the horn.

Posted on Jun 11, 2010

emissionwiz
  • 75744 Answers

SOURCE: 2002 Cadillac dts , transmission shifts to 2 and

Since the transmission in this car is electronically controlled the first thing that must be done is to have the transmission control module scanned for fault codes, that is numero uno.

Posted on Apr 27, 2012

harrisonm299
  • 7 Answers

SOURCE: after i changed the ignition switch in my 1983 cadillac now the horn wont stop blowing

did you removed the steering you might have grounded the wire for the horn , it works on a ground system i would check the wire again and make sure it's now shorted

Posted on Oct 04, 2012

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I have a 1977 Cadillac Seville and it does the same thing, and when the outside temperature drops below 65 degrees the horn will sound continuously until either the horn relay or the horn fuse is removed.

The problem is in the horn pad on the steering wheel, and the contact plates inside of the horn pad are too close together (a manufacturing defect) and when the temperature drops down to a certain degree then the horn pad will contract and cause the metal contact plates inside of the horn pad to touch and make contact, and it is same thing as if you were pushing on the horn pad.

I have also heard of the exact opposite happening and when the temperature gets too hot the horn pad will expand and cause the metal contact plates to touch and make contact and activating the horn.

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My horn keeps going off at random times.


y horn on my Seabring would go off all by it's self. The dealership told me it was because we did not have a key fob to turn the security system off. We paid $120 to get the fob and have it programmed. The horn did not work except on the panic function of the key fob. I checked the fuse and relay and both were working. I was not getting voltage to the wire on the horn. I had the dealership look it over and they said I needed a new airbag for $600 plus labor. The problem was not in the airbag. The horn pad had a short in it caused by the tabs on the back of the Chrysler emblem that is located on the steering wheel cover. The prongs had made a hole through the horn pad. The horn pad is the switch that connects when you press the horn. To describe it imagine two pieces of copper foil much like aluminium foil. There is a microsopic thin layer of pourus plastic like membrane on each piece of foil. When you press the horn the foil makes contact.
THE FIX:
The tech had removed the airbag from the wheel. I did not have to pull that. Here is how to pull the air bag. There are two screws that hold the cruise controls on the steering whell. The are located on the back of the wheel. When those are removed you can remove the screws that hold the airbag. You will see them. I don't know what size of torx bits you need. Pull the bag our and disconnect all the wires. It will not blow up. Use a 10mm socket or wrench to remove four lock nuts. You will have to pry the metal cover off of the airbag cover. Be sure to bend the prongs back in for replacement. Now, Use a pair of side cutters or your choice tool to cut the holders that retain the horn pad. Pull the horn pad and cut the indented spots out. I used a single edged razor blade. Once the holes were made I used a pocket screw driver to open upt the horn pad. Don't damage the two foils. When you get an opening large enough to grab pull the two foils apart and use electricle tape to insulate the two inner sides of the foil where you made the cuts. Now put it back together. It took me a little over an hour. No shop will asume the responsibility to tamper with the airbag so you are on your own unless you want to pay me. I am an ASE Master Technician. Don't pay the $600 the shops want. It's already broken. What can it hurt?

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