2011 Cadillac DTS Owner's Manual - Page 196

There is also an interior temperature sensor located next to the steering wheel that measures the temperature of the air inside the vehicle. The climate control system uses the information from these sensors to maintain your comfort setting by adjusting the outlet temperature, fan speed, and the air delivery mode. The system may also supply cooler air to the side of the vehicle facing the sun. The recirculation mode will also be used as needed to maintain cool outlet temperatures. Outlet Adjustment For the front outlets, use the thumbwheel located below each outlet to change the direction of the airflow. Use the thumbwheel located next to the outlets to shut the airflow or to open the outlets and re-direct the air. There is also an exterior temperature sensor located behind the front grille. This sensor reads the outside air temperature and helps maintain the temperature inside the vehicle. Any cover on the front of the vehicle could cause a false reading in the displayed temperature. In order to prevent false temperature readings at startup, the displayed temperature will not change until the following occurs: . For the rear outlets, slide the lever left or right and up or down to change the direction of the airflow. Operation Tips . Clear away any ice, snow or leaves from the air inlets at the base of the windshield that may block the flow of air into your vehicle. Use of non-GM approved hood deflectors may adversely affect the performance of the system. Keep the path under the front seats clear of objects to help circulate the air inside of your vehicle more effectively. . Vehicle speed is above 16 km/h (10 mph) for 5 minutes. Vehicle speed is above 51 km/h (32 mph) for 2 and a half minutes. . . 4-38