1997 Buick Riviera Owner's Manual - Page 106

Daytime Running Lamps Daytime Running Lamps (DRL) can make easier for it the others tosee the front of your vehicle during day. in DRL can be helpful many different driving in the conditions, but they can be especially helpful short periods after dawn and before sunset. When it's dark enough outside, your high-beam headlamps will turnoff and your low-beam and parking lamps will become active. The other lamps that come on with'your headlamps will also come on. When it's brigh off, enough outside,the regular lamps will go and your high-beam headlamps changeto the reduced brightness of DRL. To idle your vehicle with the DRL shift the off, transaxle into PARK (P). The DRL will stayoff until you shift outof PARK (P). To turn off all exterior lamps at night when you are i PARK (P), turn off the headlamps and move the n on of twilight sentinel control, located the lower area the headlamp switch,all the way toward AUTO MIN. When released, the spring control will returnthe twilight to sentinel minimum delay position, and exterior lamps all will turn off. As with any vehicle, you should turn on the regular it. headlamp system when you need A light sensoron top of the instrument panel makes the DRL work, so be sureit isn't covered. The DRL system will make your high-beam headlamps come on at reduced brightnessin daylight when: The ignition is on, The headlamp switch is off and 0 The transaxle is not in PARK (P). When DRL areon, only your high-beam headlamps will be on. The parking lamps, taillamps, sidemarker and on. other lamps won't be Your instrument panel won't be lit up either. 2-45