2001 Cadillac DeVille Owner's Manual - Page 121

When the ignition is turned to OFF, the wiper-activated headlamps will immediately turn off. The wiper-activated headlamps will also turn off if the Twilight Sentinel or the windshield wipers are turned off. The DRL system will make the low-beam headlamps come on at reduced intensity when the following conditions are met: Lamps on Reminder If the manual headlamp control is left on and a door is opened, a warning chime will sound. An exception is when the Twilight Sentinel function is active. D it is still daylight and the ignition is on, D the headlamp switch is off and D the transaxle is not in PARK (P). When DRL are on, only your low-beam headlamps (at reduced intensity) will be on. No other exterior lamps such as the parking lamps, taillamps, etc. will be on when the DRL are being used. Your instrument panel won't be lit up either. When the Twilight Sentinel switch is on and it's dark enough outside, the low-beam headlamps (at reduced intensity) will turn off and automatic low-beam headlamp operation will occur. When the Twilight Sentinel switch is on and it's bright enough outside, the automatic lamps will go off, and the low-beam headlamps at reduced intensity will take over. 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 sunset. Fully functional daytime running lights are required on all vehicles first sold in Canada. 2-51