mattrs500 said:

Hi, I’m new to this site and after some help!

I’ve bought the mrs a fiat 500s on a 63 plate as a suprise for xmas. The horn doesn’t work, previously the car had been broken into and airbags stolen. Someone has replaced the airbags but I’m thinking this is related to the horn being inoperative. What I’d like to know is, is the spiral cable on the indicator stalk assembly the part that works the horn?
I’m reluctant to replace the airbag on the steering wheel and still have the same fault.

Any help would be great!
Thanks

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John202020 said:

Typecast boy is the person who'll know he should be around soon, he's replace lots of air bags .

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swifty500 said:

Have you checked fuse 10 in the engine fuse box and relay 3 in the same location first? The horn is routed via the clockspring and also usually has another connection under the airbag-it will be one of these things unless the actual clockspring has failed.

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mattrs500 said:

i’ve not checked it but i will have a look and check the continuity across the fuse.
Is the horn run via a multi plug on the back of the airbag? The spiral cable is part of the indicator/wiper stalk assembly i believe? Not keen on spending £150 on an airbag to find it’s the £40 stalks.
I know it’s been messed around with before i bought the car and apparently the airbag was replaced but it is the right one and all connectors fit ok.

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swifty500 said:

This is the entire circuit



Horn switch on steering through clockspring

To bcu

Via relay and fuse

To horn



If its failed, its via one of these circuits



Have you had the steering wheel off to see if the horn wire was re-connected?

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typecastboy said:

If the airbag has been changed it’s quite likely that one of the airbags has been caught under the spring that activates the horn. I’ve done this a few times. Really annoying. You have to be really careful to keep the wires out of the way when you push the airbag home.

Top tip for releasing the airbag. Get an old medium sized flat blade screwdriver and bend it by nearly 90 degrees in a vice. I have sat there for nearly two hours in the past with a normal screwdriver trying to release the clips. The bent screwdriver gets in at the right angle and it pops off. Three springs in total, one behind each hole in the rear of the wheel.

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