Question about 1998 Cadillac DeVille
Horns goes off while driving or the car is parked pressing on the horn turns it off
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
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
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
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
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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