Hi everyone!
issue: after taking my 2006 truck to the dealer for the airbag recall a couple of months ago, the horn sometimes, after the truck is park and without a key in the ignition, goes off and doesn't stop and i have to disconnect the harnes (located in front of the passenger tire close to the rear of the headlight). I took the truck back to the dealer and they said the recall job was done correctly but the problem is still the same. Right now the harness is disconnected afte the horn went off in the middle of the night 2 days ago.
Any suggestion or ideas will be appreciated.

 

There is a short somewhere in the wiring or the horn button is sticking.
Some mazda's i.e. have a horn that goes off because a foam pad under the horn button deteriorates.
At least you know the horn works. ;-)

 

Could this problem be temperature related ?
Have had similar problem with horn button contacts affected by temperature.
Cure was to replace horn contact assy,

 

Thank you guys for your help. I took the truck back to the dealer yesterday and the technician checked the wiring for the airbag and the horn switch. He said all is OK, let's see what happens this time. I'll keep you posted.