2005 Buick Rendezvous Owner's Manual - Page 169

6 (Floor): This mode directs most of the air to the floor outlets. Use this mode to send air to the rear of the vehicle. Keep the area under the front seats free of objects that could obstruct airflow to the rear of the vehicle. The right knob can also be used to select defog or defrost mode. For more information, see "Defogging and Defrosting" later in this section. Temperature Control: Use the driver's and passenger's temperature levers to increase or decrease the air temperature inside your vehicle. # A/C (Air Conditioning): Press this button to turn the air-conditioning system on or off. When A/C is pressed, an indicator light in the button will come on to let you know that air conditioning is activated. You may notice a slight change in engine performance when the air-conditioning compressor shuts off and turns on again. This is normal. The system is designed to make adjustments to help with fuel economy while still maintaining the selected temperature. 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. 9 (Fan): Turn the left knob clockwise or counterclockwise to increase or decrease the fan speed. Turn the knob counterclockwise until it stops to turn off the fan. The fan must be turned on for the air conditioning compressor to operate. 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. Press this button to turn the recirculation mode on or off. When the button is pressed, an indicator light will come on. The air-conditioning compressor also comes on. The recirculation mode can be used with vent and bi-level modes, but it cannot be used with floor, defog, defrost or outside air modes. @ (Recirculation): 3-31