2002 Buick Century Owner's Manual - Page 111

The ignition must be off for delayed entry lighting to work. Just after all the doors have been closed, the delayed entry lighting feature will continue to work until one of the following occurs: D The ignition is in RUN, or D the doors are locked, or D an illumination period of 25 seconds has elapsed. If during the illumination period a door is opened, the timed illumination period will be canceled and the interior lamps will remain on. Rearview Mirror Reading Lamps The reading lamps are located on the underside of the rearview mirror. Use the button next to each lamp to turn them on and off. Dome Lamp (If Equipped) The dome lamp will come on when you open a door. Battery Rundown Protection Your vehicle has a feature to help prevent you from draining the battery in case you accidentally leave the interior courtesy lamps, reading/map lamps, visor vanity lamps, trunk lamp, underhood lamp or glove box lamps on. If you leave any of these lamps on, they will automatically turn off after 20 minutes, if the ignition is in OFF. The lamps won't come back on again until you do one of the following: Delayed Exit Lighting This feature illuminates the interior for a period of time after the ignition key is removed from the ignition. The ignition must be off for delayed exit lighting to work. When the ignition key is removed, interior illumination will activate and remain on until one of the following occurs: D The ignition is in RUN, or D the power door locks are activated, or D an illumination period of 25 seconds has elapsed. If during the illumination period a door is opened, the timed illumination period will be canceled and the interior lamps will remain on. D Turn the ignition on, D turn the exterior lamps control off, then on, or D open a door. If your vehicle has less than 15 miles (25 km) on the odometer, the battery saver will turn off the lamps after only three minutes. 2-47