Question about 1998 Cadillac Seville
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
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