I absolutely love my custom 1998 Ford Mustang Covertable that has been modifed to a one of a kind. This is my 3rd year with the car, and it has suddenly decided to randomly go into Theft Mode and will not start. It may start at 12:00 noon, then not start at 1:00 when it goes into Theft Mode, but start again at 3:00. Has anybody had this happen? Any ideas on how to fix it? I am too afraid to take it anywhere if it won't start again. It does have a new battery.