Where is the fuse panel? how do you disconnect the horn that won't shut off?

Try to start car if starts horn switch is problem disconnect switch

Your owners manual will show you exactly where it is...However it is easy to disconnect the horn...You desperately need a horn for safety reasons to avoid a crash...Especially if your state has a safety inspection requirement...Your fuse panel should also have the fuses numbered and a sticker inside the fuse box cover stating which fuse goes to horn....Also you can wear safety glasses and disconnect the battery to avoid air bag explosion..Remove steering wheel center cover where the horn is pressed...,You will see a small wire attached to the cover and to the prong inside steering wheel...It could be loose or disconnected.....If not just disconnect the wire and black tape the terminal end ..Then the horn is disconnected...

pull the wire connected to the horn itself or pull horn fuse. check for the problem in the steering wheel contact points as it may be stuck on

You could also just unplug the horn, should only have one or two wires going to it. Then you could still drive the vehicle without that damn embarrassing horn randomly blowing. Hard to say , not knowing! ;-) I hope this helps.

try replacing your horn relay it happened to me too

WIRE GOING UP INSIDE STEERING WHEEL HAS PROBERLY BROKE AND SHORTED OUT