1998 Buick LeSabre Owner's Manual - Page 106

Twilight Sentinel Twilight sentinel turns your lamps onand off by sensing how dark it is outside. Light Sensor Your twilight sentinel and DRL work with the light sensor ontop of the instrument panel. Don't cover it up. If you do, the sensor will read "dark" and the headlamps will turn on. To operate it, leave the lamp switch off. If you move the control all the way to MAX, your headlamps will remain on for threeminutes after you turn off your engine. As you move thecontrol toward MIN, the headlamps will turn off more quickly when you turn off your engine. 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 MIN, and release. To turn the exterior lamps back on, slide the control all the way toward MIN again, and release; or, shift out of PARK (P). Interior Lamps Instrument Panel IntensityBrightness Control The instrument panel intensity can be adjusted by moving this lever between LO and HI. The instrument panel lights will be on only when the headlamps are on. Theinterior courtesy lamps can be turned on by sliding the lever all the way to the right. 2-42