2010 Cadillac DTS Owner's Manual - Page 195

Wiper Activated Headlamps This feature activates the headlamps and parking lamps after the windshield wipers are turned on and have completed eight wipe cycles within four minutes. When the ignition is turned to LOCK/OFF, the wiper-activated headlamps immediately turn off. The wiper-activated headlamps also turn off if the windshield wipers are turned off. • The transmission is not in P (Park) (United States only). • The light sensor is covered or not detecting light. See "Sensors" under Dual Climate Control System on page 4-36. When DRL are on, no other exterior lamps such as the parking lamps, taillamps, etc. will be on when the DRL are being used. The instrument panel will not be lit up either. When automatic lighting is on and it is dark enough outside, the turn signal lamps turn off and normal low-beam headlamp operation occurs. When automatic lighting is on and it is bright enough outside, the regular lamps go off, and the DRL takes over. If the vehicle is started in a dark garage, the automatic headlamp system comes on immediately. Once you leave the garage, it will take approximately one minute for the automatic headlamp system to change to DRL if there is light outside. During that delay, the instrument panel cluster may not be as bright as usual. Make sure the instrument panel brightness knob is in the full bright position. See Instrument Panel Brightness on page 4-31. Turning on automatic lighting or the headlamps will deactivate the DRL. If the parking lamps or the fog lamps were turned on instead, the DRL will still deactivate. 4-29 Headlamps on Reminder A warning chime will sound if the exterior lamp control is left on in either the headlamp or parking lamp position and the driver's door is opened with the ignition off. Daytime Running Lamps (DRL) Daytime Running Lamps (DRL) can make it easier for others to see the front of your vehicle during the day. Fully functional daytime running lamps are required on all vehicles first sold in Canada. The DRL system makes the turn signal lamps come on when the following conditions are met: • It is still daylight and the ignition is on. • The exterior lamp control is in the off position.