2014 Cadillac XTS Owner Manual - Page 170

6-4 Lighting Daytime Running Lamps (DRL) DRL can make it easier for others to see the front of your vehicle during the day. Fully functional DRL are required on all vehicles first sold in Canada. For vehicles with High Intensity Discharge (HID) headlamps, the dedicated DRL will come on when all of the following conditions are met: . . Automatic Headlamp System When the exterior lamp control is set to AUTO and it is dark enough outside, the headlamps come on automatically. The automatic headlamp system turns off when the exterior lamp control is turned to O or the ignition is off. For vehicles sold in Canada, this control only works when the transmission is in P (Park). Lights On with Wipers If the windshield wipers are activated in daylight with the engine on, and the exterior lamp control is in AUTO, the headlamps, parking lamps, and other exterior lamps come on. The transition time for the lamps coming on varies based on wiper speed. When the wipers are not operating, these lamps turn off. Move the exterior lamp control to O or ; to disable this feature. The ignition is on. The exterior lamp control is in AUTO. The light sensor determines it is daytime. The vehicle is not in P (Park). There is a light sensor on top of the instrument panel. Do not cover the sensor. The system may also turn on the headlamps when driving through a parking garage or tunnel. When it is bright enough outside, the headlamps will turn off or may change to Daytime Running Lamps (DRL). . . When the DRL are on, the taillamps, sidemarker lamps, and other lamps will not be on. The DRL turn off when the headlamps are turned to O or the ignition is off.