2005 Buick Century Owner's Manual - Page 119

VENT (Ventilation): This mode brings in outside air and directs it through the instrument panel outlets. BI-LEV (Bi-Level): This mode directs approximately half of the air to the instrument panel outlets, and then directs most of the remaining air to the floor outlets. Some air may be directed toward the windshield. HTR (Heater): This mode directs most of the air to the floor outlets, with some air directed to the outboard outlets, for the side windows, and some air directed to the windshield. BLEND: This mode directs half of the air to go to the floor outlets and half to the defroster and side window outlets. The air-conditioning compressor will run automatically in this setting unless the outside temperature is below 40°F (4°C). The right knob can also be used for the defrost mode. Information on defrosting and defogging can be found later in this section. LO (Low Fan Speed): This setting creates the lowest fan speed. HI (High Fan Speed): This setting creates the highest fan speed. DRIVER (Driver's Side Temperature): The lever on the left adjusts the air temperature for the driver's side outlets. Slide the lever up to raise the temperature and down to lower the temperature. PASSENGER (Passenger's Side Temperature): The lever on the right adjusts the air temperature for the passenger's side outlets. Slide the lever up to raise the temperature and down to lower the temperature. A/C (Air Conditioning): Press this button to turn the air-conditioning on and off. An indicator light above the button will come on when the air conditioning is on. During daylight hours the interior lighting control might need adjustment to the highest setting in order for the indicator light to be seen. The system will cool and dehumidify the air inside the vehicle when the A/C indicator light is on. On very hot days, open the windows long enough to let hot, inside air escape. This reduces the time for the vehicle to cool down. 9FAN: The left knob controls the fan speed. OFF: Turn the knob all the way counterclockwise to turn off the fan. 3-19