2004 Buick Regal Owner's Manual - Page 119

2. Press the AUTO button. Choosing the coldest or warmest temperature setting will not cause the system to heat or cool any faster. If the system is set at the warmest temperature setting, 90°F (32°C), hot air will be directed to the floor, the fan will increase to the highest speed, and the system will remain in manual mode at that temperature. The system will not return to automatic until the temperature setting is lowered. If the system is set at the coldest temperature setting, 60°F (15°C), cold interior air will be recirculated through the air panel outlets, and the fan will increase to the highest speed. The system will not return to automatic until the temperature is raised. In cold weather, the system will start at reduced fan speeds to avoid blowing cold air into the vehicle until warmer air is available. The system will start out blowing air at the floor but may change modes automatically as the vehicle warms up to maintain the chosen temperature setting. The length of time needed for warm up will depend on the outside temperature and the length of time that has elapsed since the 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. Manual Operation During daylight hours, the instrument panel brightness control might need to be adjusted to the highest setting, in order to see the indicator lights 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 the selection for a few seconds, and then the outside temperature will be displayed. 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. 3-21