2015 Cadillac CTS Owner Manual - Page 175

6-4 Lighting . Pull and hold the turn signal lever toward you to use this feature. When this is done the following will occur: . The exterior lamp control is in AUTO. The light sensor determines it is daytime. The parking brake is released or the vehicle is not in P (Park). . If the headlamps are off or in low-beam mode, the high-beam headlamps will turn on. They will stay on as long as the lever is held there. Release the lever to turn them off. If the headlamps are in high-beam mode, they will go to low beam. . The taillamps, instrument panel lights, and other lamps will not be on. The DRL turn off when the headlamps are turned to O or the ignition is off. . 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. 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. If equipped, the light sensor is on top of the instrument panel or on the windshield near the rearview mirror. Do not cover the sensor, otherwise the headlamps will come on when they are not needed. The system may also turn on the headlamps when driving through a parking garage or tunnel. If the vehicle is started in a dark garage, the automatic headlamp system comes on immediately. If it is light outside when the vehicle leaves the garage, there is a slight delay before the automatic The ignition is on.