2007 Cadillac DTS Owner's Manual - Page 191

When DRL are on, no other exterior lamps such as the parking lamps, taillamps, etc. will be on when the DRL are being used. Your instrument panel will not be lit up either. When automatic lighting is on and it is dark enough outside, the turn signal lamps will turn off and normal low-beam headlamp operation will occur. When automatic lighting is on and it is bright enough outside, the regular lamps will go off, and the DRL will take over. If you start your vehicle in a dark garage, the automatic headlamp system will come 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, your instrument panel cluster may not be as bright as usual. Make sure your instrument panel brightness knob is in the full bright position. See Instrument Panel Brightness on page 192. 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. To idle your vehicle with the DRL off at night, turn off automatic lighting and shift the transaxle into PARK (P). Placing your vehicle in PARK (P) disables the DRL. The DRL will stay off until you shift out of PARK (P). To drive your vehicle with the DRL off, turn off automatic lighting and manually turn on the parking lamps or fog lamps (if equipped). As with any vehicle, you should turn on the regular headlamp system when you need it. Fog Lamps Use the fog lamps for better vision in foggy or misty conditions. - (Fog Lamps): The fog lamps button is located on the exterior lamps control. The exterior lamps control is located on the instrument panel to the left of the steering column. 191