2010 Cadillac DTS Owner's Manual - Page 132

C (ON/RUN): This position is where the key returns to after the vehicle is started. This position displays some of the warning and indicator lights. The battery could be drained if you leave the key in the ACC/ACCESSORY or ON/RUN position with the engine off. You may not be able to start the vehicle if the battery is allowed to drain for an extended period of time. D (START): This position starts the engine. A warning chime will sound and the Driver Information Center (DIC) will display DRIVER DOOR OPEN when the driver door is opened if the ignition is in LOCK/OFF, ACC/ACCESSORY and the key is in the ignition. See DIC Warnings and Messages on page 4-67 for more information. 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 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. Retained Accessory Power (RAP) These vehicle accessories can be used for up to 10 minutes after the ignition key is turned 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. Audio System Audio Steering Wheel Controls Power Windows Sunroof (if equipped) 3-24