2004 Buick Century Owner's Manual - Page 121

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. "(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. For a quick cool-down on a very hot day, use MAX with the temperature levers all the way in the blue area. If this setting is used for long periods of time, the air in the vehicle may become too dry. For normal cooling on hot days, use VENT with the temperature levers in the blue area. The system will bring in outside air and cool it. On cool, but sunny days, the sun may warm your upper body, but your lower body may not be warm enough. Select BI-LEV and set the temperature levers to a comfortable setting. The system will bring in outside air and direct it to your upper body, while sending slightly warmed air to your lower body. Push the A/C button for cooling. 9FAN: The left knob controls the fan speed. OFF: Turn the knob all the way counterclockwise to turn off the fan. 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. 3-19