2004 Cadillac CTS-V Owner's Manual - Page 152

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 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. If you have fogging on the side windows, turn the thumbwheel on the outboard outlets to the side window defog position. See Outlet Adjustment on page 3-31 for more information. 0 (Defrost): yN z (Mode): on the display. Press this button until defog appears Pressing defrost directs most of the air to the windshield, with some air directed to the side windows. 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. This mode may also cause the fan speed and air temperature to increase. - (Defog): This mode directs the air between the windshield, floor outlets and side windows. 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 is cancelled when you enter defog mode. If you select recirculation while in defog mode, it will be cancelled after 10 minutes. If you have fogging on the side windows, turn the thumbwheel on the outboard outlets to the side window defog position. See Outlet Adjustment on page 3-31 for more information. Do not drive the vehicle until all the windows are clear. 3-30