2001 Cadillac DeVille Owner's Manual - Page 126

Parade Dimming This feature prohibits dimming of the digital displays and backlighting during daylight hours when the key is in the ignition and the headlamps are on. This feature operates with the light sensor for the Twilight Sentinel and is fully automatic. When the light sensor reads darkness outside and the parking lamps are active, the digital displays can be adjusted by turning the lamp control knob counterclockwise to dim and clockwise to brighten lighting. 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. Battery Load Management The battery load management feature is designed to monitor the vehicle 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 RPM (revolutions per minute) 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, high blower fan, heated seats and engine cooling fans. Reading Lamps 2-56