2005 elantra gls alarm issues??

[nancy361]

Ive had my car 1 yr now. Ive been having issues with the alarm. seems when i lock the car with the keypad, not too long after that the alarm will go off etc. so then i have to go out and hit the unlock on keypad. Its like i cant even lock the car because this happens.

in the fall, id have it out front of my house and locked ,then it was like almost same time of day it would go off, all for no reason. Id lock it at nite and in middle of nite id hear it go off. Now i dont even lock the darn thing cause i know itll go off. I have full warranty and i need to call the dealer to get it in there to see whats up.. I was told the keypad button hit once to lock the doors and then hit it again and i get confirmation chirp. i did all that but it would still go off . its not about being to sensitive, like some alarms are, its got to do with something else, i know it... is there a chip involved in this car? computer? sometimes horn works and sometimes it doesnt too. Its really a nice car outside of this issue. it is a big deal, cause i dont lock it and i dont like that i cant lock it.
any ideas??? nothing worse going into the dealer repair and not having some idea of whats wrong....
thanks