2006 Cadillac DTS Owner's Manual - Page 167

Reading Lamps The reading lamps are located on the overhead console on the headliner and in the rear door opening. These lamps come on automatically when any door is opened and it is dark outside. For manual operation, press the button to turn them on. Press it again to turn them off. If the reading lamps are left on, they automatically shut off 10 minutes after the ignition has been turned off. If the battery continues to discharge, even with the engine idling at a higher rpm setting, some electrical loads will automatically be reduced. When this occurs, the rear window defogger may take slightly longer to clear the glass, the heated seats may not get as warm as they usually do and the climate control fan may cut back to a lower speed. For more battery saving information, see "Battery Saver Active Message" under DIC Warnings and Messages on page 3-76. Inadvertent Power Battery Saver This feature is designed to protect your vehicle's battery against drainage from the interior lamps, trunk lamp, glove box lamp, or the garage door opener. When the ignition is turned off, the power to these features will automatically turn off after 10 minutes (three minutes if a new car has 15 miles (24 km) or less). Power will be restored for an additional 10 minutes if any door is opened, the trunk is opened or the courtesy lamp switch is turned on. Battery Load Management The battery load management feature is designed to monitor the vehicle's electrical load and determine when the battery is in a heavy discharge condition. During times of high electrical loading, the engine may idle at a higher revolutions per minute (rpm) setting than normal to make sure the battery charges. High electrical loads may occur when several of the following are on: headlamps, high beams, fog lamps, rear window defogger, the climate control fan at high speeds, heated seats and engine cooling fans. 3-37