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-   -   Horn Goes Off After Washing Car--Twice?? (http://www.the370z.com/exterior-interior/94095-horn-goes-off-after-washing-car-twice.html)

tiger123 07-20-2014 09:50 AM

Horn Goes Off After Washing Car--Twice??
 
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?

14ZTSport 07-20-2014 10:15 AM

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 07-20-2014 10:16 AM

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?

kenchan 07-20-2014 11:18 AM

Quote:

Originally Posted by tiger123 (Post 2902151)
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?

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 07-20-2014 11:43 AM

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.

kenchan 07-20-2014 03:42 PM

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 07-20-2014 03:44 PM

..or your fob's wet.

tiger123 07-21-2014 07:24 PM

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.........:confused:

tiger123 07-26-2014 10:07 AM

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.

falconfixer 07-26-2014 11:25 AM

Big Bang Train Air Horns Nathan Train Horn Air Horn

tiger123 07-26-2014 12:27 PM

Quote:

Originally Posted by falconfixer (Post 2909148)

Excellent.......Just what I was looking for.....I placed my order today. Matter of fact, I bought two, just in case it happens again.......:icon14:

brandonb370 07-26-2014 12:33 PM

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 :p

falconfixer 07-26-2014 12:34 PM

Looks like someones sense of humor burned up with their horn.

Here's a thought. Download the wiring diagram from the FSM and wring out the wires with a multimeter and fix the short since something burned up. Once you fix that don't overthink it, go to courtesyparts.com and install a new horn. You want aftermarket, go to Autozone.

tiger123 07-26-2014 03:06 PM

Quote:

Originally Posted by falconfixer (Post 2909210)
Looks like someones sense of humor burned up with their horn.

Here's a thought. Download the wiring diagram from the FSM and wring out the wires with a multimeter and fix the short since something burned up. Once you fix that don't overthink it, go to courtesyparts.com and install a new horn. You want aftermarket, go to Autozone.

I didn't take it literally. I was actually trying to be funny as well.....guess it didn't come across very well.

Tks for the diagram tip. I will try this out and see what happens.

falconfixer 07-27-2014 09:34 PM

The retard :icon14: icon threw me off so I got on the defensive.

Looking at your mods it doesn't looks like you messed with the wiring in there so that makes it tough to isolate a possible short. The concern is that you smelled burnt electrical so something is shorting/burning...we got that. Now to find the problem.

I don't have the wiring diagram in front of me but a horn can't be that complicated. Wringing it out may be a bitch so a visual might be a better start. I would get in there and inch by inch as much as you can trace the wires and see it the shielding is cut or kinked or just fubared. OHM it out once that is done to see if it's getting a signal when it should and isn't when it shouldn't.

A buddy would definitely help if for anything to have a second pair of eyes since I imagine your aggravated at this point. Also, try and recreate the environment. Wash it like you normally do and pop the hood. It should be dry as a bine in there and if water is getting in there that may shed some light.

I don't want to write a novel but do the best you can to figure out why it shorted just from washing it. In the end, courtesy, ebay, amazon might have cheap horns to get in there to figure out what is going on and then you can install the train horn :tup:

tiger123 08-01-2014 08:27 AM

I have an update on this situation. I found the fuse was blown. I tried replacing the fuse and every time it popped. There is obviously a short somewhere.

I scheduled an appt. at the stealership next Wednesday 8/6/14. I purchased an extended warranty and this is covered. I asked my service adviser for the Sr. Master Technician to address this issue which they obliged. Hope it doesn't turn into a bigger issue.............Electrical issues as we know can be tricky.

Update coming after appointment.

Wiggins3377 10-10-2014 06:14 PM

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.

Wiggins3377 10-11-2014 08:43 AM

Bueller?...


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Wiggins3377 10-14-2014 03:36 PM

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.

kenchan 10-14-2014 04:13 PM

Quote:

Originally Posted by Wiggins3377 (Post 2999876)
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.

Fast forward a few days... some dumbarse backed into me! No horn to blow to alert! :mad:

AdamRacer 10-14-2014 06:42 PM

:iagree: and the worse part is seeing it coming..

tiger123 10-15-2014 03:46 PM

Wiggins, sorry for belated reply. Just sent you a PM as well.

Sorry for late reply. It has been rectified. The issue was a short with the horn relay connection. There was corrosion. I had to pull the fuse in order to get it to stop. Took it into the dealer and they installed a new horn and reinforced the connection. Put a new fuse in as well. So far it has yet to repeat itself.

As FYI, all this was covered under warranty. My Z was a Certified Used Nissan purchase from the dealership.

Good Luck.


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