My 2001 ( about120k, new Bumblebee, never any issues) refused to start the other day. Just driven a couple of hours on a very cold day. Parked, did not lock, went to the hatch to get something out, and found I had to unlock it by hand. Took care of business, about an hour. Out the car, turned on the ignition and absolutely nothing. Thought it might have somethiing to do with the locks, so tried locking and unlocking, manual lock and unlock of hatch. Finally got it to turn on and run, and it has been doing so nicely ever since. The only evidence I find is the loss of presets stations on the radio as well as the time, which leads me to suspect that the 12v battery somehow became disconnected or shut off. Is there any kind of interlock in the locking system that would do this?