you can take it to a dealer and they can program this part of it out ,but their the only ones that can do it especially if its a factory alarm system,there's also a wire you can disconnect from the horn but then it will cause the horn system not to work right,its best to let the dealer program this feature of the alarm system out of it,if it was an aftermarket alarm you would have the option of doing it your self,i got an after market system on mine and it has the ability to turn horn mode off,good luck.