I have been chasing this intermediate issue on my 04 all winter. Car will start fine and drive fine and at random times after you shut the car off it will not restart, will not crank or anything. Battery light stays on when you go to crank it. No theft light blinking so I don't think the PATS system is the issue. When I turn the key all power in the car goes away, stereo dies,odo goes blank. Has new alternator and battery. Now car is an auto swapped car with an opti shift computer in it so not sure if that is causing an issue. I have tried messing with the shifter when cranking the key and that doesn't help. This started last fall and has come and gone. Car will sit for a few hours to a few days then fire right back up and be fine. Anyone else ran into a problem like this? To the point I don't even want to drive the car cause not sure if it will leave me stranded or not. Could this be an issue with the ignition switch maybe? No codes either.