2001 Buick LeSabre Owner's Manual - Page 111

Park Lamp Override Feature If the Twilight Sentinel lighting is active, it can be disabled by turning on the manual parking lamps. The lighting will be disabled until the ignition is moved from RUN or until the outside light level becomes daylight. The outside light level changing to daylight will cause the Twilight Sentinel feature to deactivate. If it becomes dark again, the parking lamps will have to be turned on again. (If the parking lamps are already on, they will have to be turned off, then back on to disable twilight). The wiper-activated headlamps will override the twilight disable feature. Light Sensor Your Twilight Sentinel and DRL work with the light sensor located on top of the instrument panel. Don't cover it up. If you do, the sensor will read "dark" and the Twilight Sentinel lighting will turn on. 2-46