my keyless door entry thing didnt work the other day, got new batteries in today, it still doesnt work. so i cant do anything to my car without the alarm going off when i try to unlock the doors and when i try to turn the ignition on and off , the alarm goes off. do you think that the circuit board in the key thing is broken ? how much to get a new one? otherwise, why cant i get into my car and drive it without the alarm going off? this hasnt happened before. can anyone help?