2002 Buick LeSabre Owner's Manual - Page 109

The exterior lamps can be completely shut off while the vehicle is in PARK (P) by sliding the Twilight Sentinel lever all the way toward OFF, and releasing it. To turn the exterior lamps back on, slide the lever all the way toward OFF again, and release it; or, shift out of PARK (P). 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. 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. Exterior Lighting Battery Saver If the exterior lamp button has been left on, the exterior lamps will turn off approximately 10 minutes after the ignition is turned to LOCK and any door has been opened. This protects draining the battery in case you have accidentally left the headlamps or parking lamps on. If you need to leave the lamps on for more than 10 minutes, use the manual control to turn the lamps back on after the ignition is turned to LOCK and any door is opened. To delay the lamps from turning off, see "Twilight Sentinel" in the index. 2-46