2003 Buick LeSabre Owner's Manual - Page 134

Daytime Running Lamps Daytime Running Lamps (DRL) can make it easier for others to see the front of your vehicle during the day. DRL can be helpful in many different driving conditions, but they can be especially helpful in the short periods after dawn and before swset. Fully functional daytime running lamps are required on all vehicles first sold in Canada. A light sensor on top of the instrument panel monitors the exterior light level for the operation of DRL and Twilight Sentinel@, so be sure it isn't covered. The DRL system will make your high-beam headlamps turn on at reduced brightness in daylight when the following conditions are met: 0 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@lever 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. Cornering Lamps If your vehicle has this feature, the cornering lamps come on when the headlamps or parking lamps are on and you signal a turn with the multifunction lever. They provide more light for cornering. The ignition is on, the exterior lamp button for the headlamps is off and the transaxle is not in PARK (P). 3-13