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Discussion Starter #1
Hi,

I drive a sept 2000 93 SE TDi and yesterday experienced a problem with the horn when starting the engine. On starting the engine the horn just blared out, not two tone as the alarm does just a constant sound, and with no flashing lights. I tried getting out of the car and locking and opening it to reset the alarm but no good. Ended up locating the siren behind the front grill and disconected the 1st set of wires on the right hand side siren. This stopped the problem and I still had the other siren for the horn on the steering wheel.

Would you belive that tonight when I came out of work and started the engine it happened again and I had to disconect the other siren. When I got home my neighbour (who's a Ford Mechanic) had a look but can't trace any problem. We have reconnected both sirens individually and together but can't recreate the fault.

We have had incredibly hot temperatures in Edinburgh, yesterday and today (over 33 degrees)and the car was sitting baking in the middle of the office carpark. I wondered if that could have caused the problem, because it didn't happen when I went to work this morning.
 

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Well that's an oddball fualt to bring you to saabcentral!

I've heard of things setting off the security siren [buried behind a wheel arch liner on the 900] but this is a first with the 9-3 for me, if the fualt comes back I think a trip to a dealer or saab specialist to have a device called Tech II plugged into the car to see what is wrong.
 

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It sounds like your problem doesn't have anything to do with your alarm. If it was, then the alarm siren (located in the fender as ragtopcav says) would be going off. The horns behind the grille don't sound with the alarm, they only honk when you press on the steering wheel. It might be as simple as a short. You used to see that with old cars sometimes, but I haven't heard a horn short out in a while. It's a little embarassing, isn't it? :cheesy:
 

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Discussion Starter #4
Thanks for the advice guys. We can't recreate the problem and "touch wood" it hasn't happened again. Looks as tho it could have been to do with very hot weather we had on both those days. Who knows! Will mention it to the garage when it goes in for its service.
 
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