What is the Retained Accessory Power feature?
This option leaves accessory power ‘on’ after you turn off the car and remove the key. For 10 minutes you will have power to operate the stereo, power door locks, and power windows. After 10 minutes (or when you open a door) the power shuts off automatically. This is part of the Power Door Lock Option (AU3) which comes with Preferred Equipment Group 2 (FZA2) on the Z28 and Option Packages B (1SB) and C (1SC) on the Formula.