The key has to be on, as it is a electronic horn, and if that doesn't work, check your horns. there behind the front bumber. easy fix. you can get a universal replacement at any auto store.
fix it.
if its clicking then its the horn itself.you can get a horn from auto parts stores.
The horn button contacts on the steering wheel are dirty.
it depends what is wrong with it....start by figuring that out. It doesnt work. Thats whats wrong with it.
might be a fuse, check the fuse box in the drivers footwell
Many times the horn itself could be bad; if you have power to the horn and no sound, replace the horn. I would get one from a salvage yard for $10-15. Roll down window. Hollar real loud "LOOK OUT!"
pop the hood and in front of the radiator there is a circular device. that is your horn. check the connection of the wire to the receiver on the horn. when that is secure, use a flathead screwdriver to pry the cover off of the steering wheel and check that connection. if those are both secured and horn still doesnt work, check the fuse for your dash.
About the the only way a driver car clean them is by using an injector cleaner additive. I recomend Lucus products. I do NOT work for Lucas, and their products will NOT void any warranty..If this doesn't work, you may need new injectors. HTH, Chuck
Replace the indicators and if that doesnt work replace the bulbs because that means either one or the other is going bad.
it doesnt work, it breaks it doesnt work, it breaks it doesnt work, it breaks
Check all the fuses.....you blew a fuse or 2 .... Do you happen to know what fuse may be causing this because i can not find a fuse for this specific thing.
then your horn is fine.