2002 Pontiac Grand Prix Owner's Manual - Page 116

Daytime Running Lamps (DRL) / Automatic Headlamp Control 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 sunset. Fully functional daytime running lamps are required on all vehicles first sold in Canada. A light sensor on top of the instrument panel makes the DRL work, so be sure it isn't covered. The DRL system will make your low-beam headlamps come on at a reduced brightness when the following conditions are met: When the DRL are on, only your low-beam headlamps, at a reduced brightness, will be on. The taillamps, sidemarker and other lamps won't be on. Your instrument panel won't be lit up either. When it's dark enough outside, your headlamps will change to full brightness. The other lamps that come on with your headlamps will also come on. When it's bright enough outside, the headlamps will go out, and your low-beam headlamps will change to the reduced brightness of DRL. To idle your vehicle with the DRL off, set the parking brake while the ignition is in OFF or LOCK. Then start your vehicle. The DRL will stay off until you shift out of PARK (P) and release the parking brake. As with any vehicle, you should turn on the regular headlamp system when you need it. D D D D The ignition is on, the exterior lamps control is off, the transaxle is not in PARK (P) and the parking brake is released. 2-56