2006 Buick Terraza Owner's Manual - Page 166

On hot days, open the windows to let hot inside air escape; then close them. This helps to reduce the time it takes for your vehicle to cool down. It also helps the system to operate more efficiently. The air conditioning system removes moisture from the air, so you may sometimes notice a small amount of water dripping underneath your vehicle while idling or after turning off the engine. This is normal. Defogging and Defrosting Fog on the inside of windows is a result of high humidity, or 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 or frost 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. Turn the right knob to select the defog or defrost mode. # MAX (Maximum Air Conditioning): Turn the right knob to this position for maximum air conditioning. This will select air conditioning and recirculation for maximum cooling of your vehicle. Recirculation: This mode keeps outside air from coming in the vehicle. It can be used to prevent outside air and odors from entering your vehicle or help heat or cool the air inside your vehicle more quickly. This mode will automatically be selected when you select maximum air conditioning. - (Defog): This mode directs air to the windshield and the floor outlets. When you select this mode, the system runs the air conditioning compressor unless the outside temperature is at or below freezing. The recirculation mode cannot be selected while in the defog mode. 0 (Defrost): This mode directs most of the air to the windshield and the side window outlets, with some air directed to the floor outlets. In this mode, the system will automatically 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. ( (Heated Seats): Press this button to turn on the heated seats. The button on the left controls the driver's seat and the button on the right controls the passenger's seat. See Heated Seats on page 1-3 for additional information. 3-28