Last week I was at a party and played tunes for 7+ hours. I then fired up the car and moved it across the yard where I played more music for 3 more hours. When I went to leave the car didn't do anything in the start position. I tested the battery and its fine. Since then I have had a Ford tech try to fix it in the yard as a favor. We ruled out relays fuses and switches. We cleared the PCM and reprogramed it. It is now narrowed down to the Anti-theft system isn't recognizing my keys there for shut down cranking, fuel and spark. Basically the car thinks I'm trying to steal it. I noticed that the anti-theft light that normally flashes stays lit constant with the key in the run position. Just curious if this has happed to anyone else or if anyone has any suggestions?