horn sounds while braking

[pajamaguy28]

Hi All, something strange happening on my MY99C2 Cab. This past week and very very intermitantly, my horn sounds when i come to a hard stop. Usually these stops are for avoiding something on the road. If i try to induce the sound by slamming on the brakes on a empty street to diagnose the problem...its ok. No work has been done to modify the brakes or horn. The only electrical work was for you basic stereo replacement with an additional amplifier in the trunk.

Thanks for the input

[JeTexas]

Hi All, something strange happening on my MY99C2 Cab. This past week and very very intermitantly, my horn sounds when i come to a hard stop. Usually these stops are for avoiding something on the road. If i try to induce the sound by slamming on the brakes on a empty street to diagnose the problem...its ok. No work has been done to modify the brakes or horn. The only electrical work was for you basic stereo replacement with an additional amplifier in the trunk.

Thanks for the input

The horn button is basically two metal contacts suspended over each other. When you push down on it, it makes a connection and sounds the horn. I'm not sure if the Porsche horn is springloaded or just has rubber tabs holding the horn button up, but it sounds like your spring/rubber needs to be replaced. When you slam the brakes, the momentum of the car intermittently overcomes the tension of the spring, and the horn goes off. I don't think it has anything to do with your electrical wiring.

[Tool Pants]

Your 1999 probably has a 4 spoke steering wheel. http://www.renntech.org/forums/index.php?showtopic=1728

[Stefan]

Maybe the person behind you is getting annoyed with your braking. j/k ;)

[pajamaguy28]

thanks for the update, ill pull the bushings out and check them out. for now i pulled the fuse, looks like im not the only one with the problem in the past. thanks