This may have been talked about before, but I've searched and come up with nothing. I have a 2003 Tundra that came from the factory with an alarm. When I arm it with the key fob I get the "beep", lights flash, and doors lock. That part works fine, but today with the alarm armed I unlocked the door from the inside, opened it up and even started the truck without the alarm sounding!! I did the disconnect/ reconnect battery trick to maybe reset it, but that did nothing. Any help would be appreciated!