I know this may be stupid, but I can't get my car alarm to work anymore. It worked fine yesterday, but not now. I have a codealarm elite 1100. Usually when I press arm on my keychain keypad, I hear two chirps, and if I touch the car, or open a door without disarming, it goes off. Now, when I hit the arm button, I only hear one chirp, and the alarm is not on anymore. I would look in the users manual, but I don't have it, I bought the car used with the alarm already installed. I tried looking online, but no luck....any help would greatly be appreciated!