tom66
Member
Horn will be controlled by the BCM. Whilst technically run by software, this is a system based on dual redundant controllers and it MUST not fault, otherwise nasty things could happen. For example it could lock the doors after an accident, windows/liftgate could close on fingers, etc. Or lights could fail to come on in the dark or go off during driving - NOT good! It also manages the keyless entry system so incorporates multiple security systems.
More likely, faulty/contaminated switch.
More likely, faulty/contaminated switch.