landshark0848
Member
My horn works when I use the alarm system. The fuse is good in the car (slot 40, 20A). but when I depress the horn on the steering wheel there is no response from the vehicle.
Horn not functioning properly
- Thread starter landshark0848
- Start date
dweisel
Top Post Dawg
The alarm horn is an entirely separate horn. It's not the one that blows with the steering wheel.
wonneber
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On mine there's a horn relay.
I didn't know there was an additional horn for the alarm.
I have 2 horns, but they are wired together.
Do you have the Bentley manual to follow the wiring diagram to check where power is lost?
I didn't know there was an additional horn for the alarm.
I have 2 horns, but they are wired together.
Do you have the Bentley manual to follow the wiring diagram to check where power is lost?
sisyphus
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Ah, no. There is a hi and low tone horn behind the left front valence. Those are the only two horns in the car, and they work together.
dweisel
Top Post Dawg
Yes, those are the steering wheel horns. The SECURITY HORN is a separate horn. Think about it. If the security horn was those two horns you are referring to. Reach under the valance an unplug the horns. Your security alarm would be easily disabled.
https://www.ebay.com/itm/00-VW-JETT...m2cacf77afb:m:m5klzI32_rH8LYHHOFUxT-Q&vxp=mtr
2many diesels
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There are three horns in a mk4. 2 behind the valance. and the security horn in the cowell.
I have seen several horns go bad from moisture.
Pull the inner finder on one side and check for power at the horn plug.
I have seen several horns go bad from moisture.
Pull the inner finder on one side and check for power at the horn plug.
sisyphus
Veteran Member
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HOLY CRAP I had no idea. I stand corrected. I'll have to look for this security horn thing. I removed the front end of my old car to get the engine and gearbox out and never saw a third horn; where exactly is it?
wonneber
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Agreed, found it in the anti-theft wire diagram.
Grounds 'LEFT REAR OF ENGINE COMPT' on G608.
Maybe in the plenum?
Grounds 'LEFT REAR OF ENGINE COMPT' on G608.
Maybe in the plenum?
It's in the middle of the cowl cover at the base of the windshield with two wires attached to it next to the ECU. It is not shaped like a horn.
You could see it through the vent holes.
wonneber
Top Post Dawg
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- Monroe, NY, USA
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So you could spray expanding foam on it to silence it?
Not really, as it does not have the conventional horn outlet.So you could spray expanding foam on it to silence it?
It can be disabled with VCDS on lock, unlock, or both. Or you can just upgrade to the OEM Siren that came on the euro cars. It sounds far more pleasant.
dweisel
Top Post Dawg
Just unplug it.So you could spray expanding foam on it to silence it?
volmaniac
Veteran Member
This is pretty good for troubleshooting.
http://www.fixmyvw.com/vw-horn-ultimate-troubleshooting-guide/
http://www.fixmyvw.com/vw-horn-ultimate-troubleshooting-guide/