Mine has the security system installed by Ford. I don't think the alarm would go off if it was hit. I do know if the windows are down, and if the doors are locked, if you reach In the alarm does sound.
Was it installed by Ford after taking delivery of your car or did it come with the alarm from the factory? I was thinking about buying the alarm from Ford and having the dealership install it. I would really like to have the IR motion sensor.