On the ignition (where your key goes), there are three positions... I, II, and III. I, turns on the car's ACC. III is to start the car and II is keeps the car running (on position). I believe I read in the user's manual when I bought my '94 (new), that after you turn off your car, I believe it's 30 secs or so, you could operate the windows and sunroof until you open a door; once a door is open or the timer runs out, all power is lost until you turn your key to the II postion again. Is this what you are talking about?