2006 Buick LaCrosse Owner's Manual - Page 150

h(Recirculation): Press this button to turn recirculation mode on or off. This mode keeps outside air from coming into the vehicle. It can be used to prevent outside air and odors from entering your vehicle or to help cool the air inside the vehicle more quickly. Recirculation is not available while in the floor, defrost, or floor/defog modes. Using recirculation for long periods of time may cause the air inside your vehicle to become too dry. Recirculation mode has a 5 minute timer after which the system allows for some fresh outside air into the vehicle to maintain interior air quality. 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 or frost from your windshield. Use the floor/defog mode to clear the windows of fog or moisture and warm the passengers. Use defrost to remove fog or frost from the windshield more quickly. - (Floor/Defog): # (Air Conditioning): Press this button to turn the air conditioning compressor on and off. The indicator light on the button will come on when the air conditioning is on. Note that the indicator light will change with each button press even when conditions prevent operation. The indicator light on the air conditioning button will come on every time the vehicle is started. The air conditioning may be turned off by pressing the air conditioner button. Press this button to turn the driver or passenger heated seats on and off. See Heated Seats on page 1-4 for additional information. Press this button to direct the air between the windshield, floor outlets and side windows. When you select this mode, the system turns recirculation off and runs the air conditioning compressor unless the outside temperature is near or below freezing. Pressing the recirculation button will have no effect other than turning on the indicator light while in floor/defog mode. 1 (Defrost): ( (Heated Seats): Press this button to direct most of the air to the windshield, with some air directed to the side windows. In this mode, the system will automatically turn off the recirculation and run the air conditioning compressor, unless the outside temperature is near or below freezing. Pressing the recirculation button will have no effect other than turning on the indicator light while in defrost mode. Do not drive the vehicle until all windows are clear. 3-28