The alarm system still arms when you lock it with the key. I had the windows down one day and locked it with the interior door locks. When I came back and needed to open the door, I unlocked it and the alarm went off. I did not have the key in my pocket. I also believe the basic disabling of the engine occurs anytime you pull the key out of the ignition. My security light starts flashing as soon as a leave the car. The only way to disable it is to turn the inition on with the the fob present and transmitting. Several guys have had the key fobs go bad and been unable to start their cars. A replacement GTO key is 3-fiigures.