We had several H2s that had the same deal and it was diagnosed as a "module waking up." Some of the electronic modules for the seats or air suspension (on the H2) and such would not shut down after the ignition was shut off or they would "magically" come alive while the vehicle was off. It would draw the battery down and leave no trace.
Maybe a tech knows more about it as I can't remember exactly how they diagnosed this but I think it ate two of my batteries.
|