After my car accident my central unit failed. Causing the alarm to go off at random while driving the car, or while the alarm was disabled.
When they replaced my central unit, I had a problem where when I went to unlock the car, it would go off. As if it were going into Panic mode (holding down trunk release.) I decided to recode the keys since my wife's key wasn't with me when they replaced the unit and needed to be coded anyways. I haven't had a problem sence.