Dont know if anyone knows this or not but the salesman at nissan were messing with me and turned my horn off so that it didnt honk when i locked my door. lol and they sat there letting me think that i had actually broke it or something..
just hold the lock and unlock button at the same time on you key fob for about 3-5 secs. the car will let you know when it has turned them on/off.
