I have a F150. I drove it this morning and all was fine. I parked in my driveway at home. I was outside doing stuff and looked at the truck and it looked like my lights were on. Sure enough I went over and tried to turn them off and they would not. I tried to start the truck and the battery is dead. I turned the headlite switch on and off several times. Nothing. I called the Ford dealer (which is a 2 hour drive from my house) and he said it sounded like a "module".
Any ideas what the problem is? Why ar my lights staying on?

 

The computer is glitching with low voltage. Charge the battery. I jump started mine, it did the same thing last week, and after letting it run afew minutes all is fine.