2009 Cadillac DTS Owner's Manual - Page 102

Retained Accessory Power (RAP) These vehicle accessories can be used for up to 10 minutes after the ignition key is turned off: Starting the Engine Move the shift lever to P (Park) or N (Neutral). The engine will not start in any other position. To restart the engine when the vehicle is already moving, use N (Neutral) only. Notice: Do not try to shift to P (Park) if the vehicle is moving. If you do, you could damage the transmission. Shift to P (Park) only when the vehicle is stopped. Audio System Audio Steering Wheel Controls Power Windows Sunroof (if equipped) Power to these accessories will work up to 10 minutes or until the driver's door is opened. For an additional 10 minutes of power, close all the doors and turn the key to ON/RUN and then back to LOCK/OFF. Starting Procedure 1. With your foot off the accelerator pedal, turn the ignition to START. When the engine starts, let go of the key. The idle speed will slow down as the engine warms. Do not race the engine immediately after starting it. Operate the engine and transmission gently to allow the oil to warm up and lubricate all moving parts. 2-26