Horn Goes Off After Washing Car--Twice??

tiger123

The strangest thing has happened to me the last two times I have washed my car. My Horn starts blaring at full db's. This happens after I wash and dry my car.

I washed my car yesterday. It's just sitting there and all of a sudden.........it goes off. I tried pushing the unlock......then lock......on the key fob. Nothing. The horn is still going off. I even get into the car, start it and the horn is still going off. I then shut the car off, back on again and horn is blowing hard. I even drove the car out of my driveway and still the horn is going off. I'm like WTF??

Eventually it stopped? I then opened the hood and this awful smell was emanating from the engine bay. It smelled electrical I guess.

Anybody have any clue WTF is going on here?

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14ZTSport

I am not a mechanic in ANY sense of the word, but based on your description I would suspect water is getting into your electrical system as it attaches to your horn or panic alarm. If it was shorting and you drove it, perhaps burnt wires at the point of an electrical short...and if smelling burnt, could cause fire so recommend service at earliest possible convenience...

Shotta

It seems your car gets upset when it's wet.

Most likely a short to wiring in the alarm system or horns have you don't any mods where you have moved wiring around in the engine bay?

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kenchan

i didnt know there were adjustable volume levels for the horns..

are you using a pressure washer? you might be pushing water through a seal.

where is the horn relay again? work on the fuse box in the engine bay recently?

tiger123

No mods to the engine. Only CAI's which were installed over a year ago.

Not using a pressure washer. Just a Fireman's Type Nozzle. It has some pressure, but nothing close to a pressure washer.

Must be a short somewhere. I guess I need to locate it before something worse happens.

I will check under the hood later today and give full inspection. If I can't find anything, I will take it to the stealership as my car has Certified warranty until 100k's. I also have the extended Gold Plus which covers just about bumper-to-bumper up until 120ks.

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kenchan

you mentioned this happens AFTER washing your car.

be funny if you're just sitting on your fob after you're done washing the car with your beer in hand.

kenchan

..or your fob's wet.

tiger123

You are right, that would be funny.

I leave the Fob in the house when I wash my car. It's not on me.

It's like it has a mind of its own. One minute everything will be great, then all of a sudden..............it goes off. I run into the house grab the Fob and start pushing buttons. Nothing happens like I explained.

Fvcking weird if you ask me.........

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tiger123

Well, my horn is now dead. It would appear it burnt itself out.

Anyone else had their horn die out? Did you get OEM or aftermarket horn replacement. If aftermarket, would appreciate details.

Thanks.

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falconfixer

Big Bang Train Air Horns Nathan Train Horn Air Horn

tiger123

Excellent.......Just what I was looking for.....I placed my order today. Matter of fact, I bought two, just in case it happens again.......

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brandonb370

Your car is definitely a transformer.

On a real note, same thing happened to me in my 1990 Cadillac Allante. Every time I took a left turn it would honk. Ended up being loose wires

Wiggins3377

Any updates on this? I just washed my car, went to have dinner and the horn started going off. Same thing, pressed fob buttons... nothing, started the car... nothing. Had to undo the battery.

Unlike the OP i have alot of aftermarket mods, including a slight wire tuck and aftermarket steering wheel where i decided not to hook up the horn button. Debating if i should just unplug the horn all together and say f*** it, but dont want this to blow up in my face.

The wire tuck and steering wheel were done months ago.

Oh, as an FYI the stealership had to replace my IPDRM (is that right?!) last year.

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Wiggins3377

Bueller?...


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Wiggins3377

welp, I never heard anything and became impatient. I pulled my front bumper and it looked like there was some corrosion around the electrical connection to the horn. Since I cant use my horn I just decided to remove it all together... weight savings. No issues since Saturday.

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