piopremier

I have a problem with my factory alarm. I was rear-end awhile back and my alarm stopped working. I looked around the trunk to see if something was broken but couldn't find anything. So i started playing with the buttons and such and came to find out that if the trunk is open i can arm and disarm if im in the back of the car, the farther forward i walk the less it works. So i closed the trunk and tried and found that sometimes it works and sometimes it doesn't and just as before, the farther towards the front i walk the less it works. Which leads me to believe that there is somekind of antenna in the trunk which might have come unattached in the accident or something of the sort. Any help would be great. thanks