2001 Buick LeSabre Owner's Manual - Page 110

When the DRL are on, only your high-beam headlamps will be on. The parking lamps, taillamps, sidemarker and other lamps won't be on. When it is dark enough outside, your low-beam headlamps will come on. The other lamps that turn on with your headlamps will also turn on. When it is bright enough outside, the regular lamps will go off, and your high-beam headlamps change to the reduced brightness of DRL. To turn off all exterior lighting at night when you are parked, turn off the headlamps and move the Twilight Sentinel control all the way toward OFF. The exterior lamps will turn back on automatically when you move the transaxle out of PARK (P). As with any vehicle, you should turn on the regular headlamp system when you need it. Twilight SentinelR Twilight Sentinel turns your lamps on and off by sensing how dark it is outside. To operate it, leave the lamp switch off. If you move the control all the way to MAX, your headlamps will remain on for about three minutes after you turn off your engine. As you move the control toward OFF, the headlamps will turn off more quickly when you move your key from RUN. You can change this delay time from only a few seconds to three minutes. The exterior lamps can be completely shut off while the vehicle is in PARK (P) by sliding the Twilight Sentinel control all the way toward OFF, and releasing it. To turn the exterior lamps back on, slide the control all the way toward OFF again, and release it; or, shift out of PARK (P). Cornering Lamps (If Equipped) The cornering lamps are designed to turn on when you signal a turn. This will provide more lighting when cornering. 2-45