Horns Were Blaring
Thread Starter
Drifting
Joined: Feb 2005
Posts: 1,592
Likes: 3
From: St Louis MO
Horns Were Blaring
The '98 was sitting in full sun, windows up, 103deg, for about 5 hours. Suddenly the horns started blaring. Pressed fob, no change. Bumped horn pad several times, no change. Finally pulled 20amp fuse to stop. Checked relay and it was okay, according to book. Horns checked okay, no shorts. Put fuse back in and got the infernal noise so I removed it again. Having previously read other threads on the subject suggesting everything from pulling/replacing the horn/airbag pad to selling the car, I decided to do what I do best, nothing. I moved the car into the shade and left it there until the next evening. Feeling adventurous, I replaced the 20amp fuse and the horn, she didn't blare and hasn't since (about 4 wks).
My theory is the super heated interior caused the horn/airbag pad to relax enough to make horn ring contact. When it cooled it resumed normal shape and broke contact. Turning the a/c on for a period of time (with fuse out) would probably have done the same thing.
My theory is the super heated interior caused the horn/airbag pad to relax enough to make horn ring contact. When it cooled it resumed normal shape and broke contact. Turning the a/c on for a period of time (with fuse out) would probably have done the same thing.
as they say in china "someting wong". bub
Tech Contributor
Joined: Dec 2003
Posts: 19,384
Likes: 87
From: Horncastle Lincolnshire, England
2023 C5 of the Year Finalist - Unmodified
Mine sits outside every day in 100+ and I've never had that problem.
I think the basic design is sound but the diagnosis sounds logical. Hope you find the snag.
I think the basic design is sound but the diagnosis sounds logical. Hope you find the snag.
Something very wong!
