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SabaDabaDoo

1999 996 with 107K mikes: Horn blasting with hard braking!

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This just started last week for no apparent reason, it is embarrassing when I get dirty looks from other motorists!

Cause? Solution?
 
 
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Start here (Boxster uses the same horn)...
 
 

A period after struggling with steering wheel screws, and doing the described fix, horn stopped working completely, blown fuse was found and replaced, still no horn, relay removed and tested ( despite hearing the clicking) all good, now the only logical thing left is the two horns themselves, problem is I have the 996 with the Aero kit, is removing the bumper as straight forward as the regular one?


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39 minutes ago, SabaDabaDoo said:


A period after struggling with steering wheel screws, and doing the described fix, horn stopped working completely, blown fuse was found and replaced, still no horn, relay removed and tested ( despite hearing the clicking) all good, now the only logical thing left is the two horns themselves, problem is I have the 996 with the Aero kit, is removing the bumper as straight forward as the regular one?


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Yes. You can also look at my DIY for the third front radiator which includes bumper removal.

 

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Yes. You can also look at my DIY for the third front radiator which includes bumper removal.
 

Thank you for the great step by step instructions.
How to test the horns themselves vs the wiring?


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That's easy - take one out of the circuit and put 12 volts across it. It will either honk or not.

The horns are cheap and a know failure point.

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That's easy - take one out of the circuit and put 12 volts across it. It will either honk or not.
The horns are cheap and a know failure point.

Thank you Loren, and as expected : both horns were dead ( along with the first used but genuine replacement). Had to get a new aftermarket .


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