I have a 1990 Toronado Trofeo with what I believe to be all the options, I recently let the car battery run dead. (Lights were on) And I had to jump the car to get it home. After I got it home I let it sit idling for a while and I sat in it. At one point I looked up at the display console and see that its giving me a warning that was something to the effect of "Passkey invalid, car may not restart." So I just let it run till its at about 1/4th of a tank (40 minutes to an hour). I then shut it off and restart it just fine. Run it for about 20 minutes and get gas for it. I come home and turn it off.

Next day I try to start it, no lights, no nothing, try jumping it, same deal.

Any ideas would be appreciated.