Ok leaving work today, hit the unlock on the FOB, doesn't work. I assume its dead. Unlock car with key. Get in, put key in, turn...engine starts then stops and the message 'unknown driver' comes up in the DIC and the car shuts off. Got other FOB from home, tried again, that one didn't work on the car either. I just got this truck back in November and I've only owned jeeps before that so I've got no idea whats goin on...PLEASE HELP!