It sounds as if the car believes the door is ajar. I know on my car it gets fussy when I gentally close the car door and it honks at me twice. Now with the alarm randomly going off.. I believe someone else on the forum had that issu and it turned out to be his door ajar switch or something like that which will be difficult to hunt down from what he was saying. Good luck though. There are several people here that are very knowledgeable about the ford pats system though so you will find out the issue in no time.