2003 Buick Century Owner's Manual - Page 130

The length of time needed for warm up will depend on the outside temperature and the length of time that has elapsed since your vehicle was last driven. 3. Wait for the system to regulate. This may take from 10 to 30 minutes. Then, adjust the temperature, if necessary. Do not cover the solar sensor located in the center of the instrument panel, near the windshield. For more information on the solar sensor, see "Solar Sensor" later in this section. When the DUAL light indicator is on, this means the TEMP control has set the temperature for the driver. When the DUAL light indicator light is not on, this means the TEMP control has set the temperature for the entire cabin. FAN: Press the up arrow on the FAN control to increase fan speed and the down arrow to decrease fan speed. Pressing the arrows cancels the automatic operation and places the system in manual mode. Press the AUTO button to return to automatic operation. If the arrow seems low when the fan is at the highest setting, the passenger compartment air filter, if equipped, may need to be replaced. For more information see Passenger Comparfment Air Filter on page 3-25 and Part A: Scheduled Maintenance Services on page 6-4. AIR FLOW: This control has several setting to control the direction of airflow when the system is not in AUTO. @ Manual Operation During daylight hours, you may want to adjust the instrument panel brightness control to the highest setting in order to see the indicator lights that go on for the various climate control settings. OFF: Pressing the OFF button cancels automatic operation and places the system in manual mode. Press the AUTO button to return to automatic operation. TEMP (Temperature): To manually adjust the temperature inside the vehicle, press the up arrow on the TEMP control to raise the temperature and press the down arrow to lower the temperature. The display will show your selection for a few seconds, and then the outside temperature will be displayed. To access the various modes available, continue to press the AIR FLOW up or down arrows until the desired mode, jiisred beiowj, appears in rne aispiay. WINDSHIELD/FLOOR: This setting directs some of the air to the floor outlets and some to the defroster and side window outlets. The air-conditioning compressor will run automatically in this setting unless the outside ,, . + LGIlIperalule is bel'ow 4G"F (4°C). I" 3-21