2006 Cadillac DTS Owner's Manual - Page 179

In order to prevent false temperature readings at startup, the displayed temperature will not change until the following occurs: W (Floor/Defog): • Vehicle speed is above 10 mph (16 kmh) for 5 minutes. • Vehicle speed is above 32 mph (51 kmh) for 2 and a half minutes. 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. Turning the control to this mode directs approximately half of the air to the floor outlets and the remaining air is directed to the side window outlets and to the windshield. When you select this mode, the system turns off recirculation and runs the air-conditioning compressor unless the outside temperature is at or below freezing. The recirculation mode cannot be selected while in the floor/defog mode. 0 (Defrost): Defogging and Defrosting Fog on the inside of windows is a result of high humidity (moisture) condensing on the cool window glass. This can be minimized if the climate control system is used properly. There are two modes to clear fog from your windshield. Use the floor/defog mode to clear the windows of fog or moisture and warm the passengers. Use the defrost mode to remove fog or frost from the windshield more quickly. Turning the control to this mode directs most of the air to the windshield and the side window outlets. In this mode, the system will automatically turn off recirculation and run the air-conditioning compressor, unless the outside temperature is at or below freezing. Recirculation cannot be selected while in the defrost mode. Do not drive the vehicle until all the windows are clear. For professional vehicles, air will be allowed to flow through the rear outlets. For quicker defrost, press the AUX button on the front climate control system so that the light is not lit. 3-49