You have a spare key fob and if you need to enter the car without a key fob, you also are provided with a key that you may insert into the rear bumper slot that opens the trunk, then you may pull a magic cord and wow the door will open or call onstar and if your battery is not DOA, the doors will unlock. if none of these things work, get a big rock and after you enter YOUR car I guess you would call for help as you now have a bad problem. better yet don't let your fobs batteries go DOA. :banghead :banghead :cuss :cuss :nopity