2001 Buick Regal Owner's Manual - Page 157

Passenger's Temperature Control The PASSENGER CONTROL buttons with the arrows adjust the temperature on the passenger's side so that it is warmer or cooler than the temperature for the driver's side. Push the DUAL button so that the indicator light is lit. Press the right arrow button to raise the temperature. Press the left arrow button to lower the temperature. The display will not show the passenger's temperature, only that of the driver. Indicators in the passenger control section will show passenger's side temperature relative to the driver's set temperature. The fan will be at low speed momentarily and then go to the high speed. The air intake will be recirculated for maximum cooling performance. As the interior of the vehicle cools down to your desired comfort point, the fan speed will decrease and the temperature will move to a warmer position to maintain your desired comfort. As the interior cools down or the sun load decreases the system could switch to air delivered to A/C vents and the floor. Cold Weather Example: When you start the vehicle in cold weather, (below freezing) or after being parked overnight. If your Driver Set Temperature is 75_F (24_C) and you are in Full Automatic mode, the system will automatically move the temperature doors to full hot. The fan will start out at a low speed and will increase to a higher speed as the engine warms up. The air will be delivered to the floor. As the the interior of the vehicle warms up to your desired comfort point, the fan speed will decrease and the temperature will move to a cooler position to maintain your desired comfort. As the cabin warms up or the sun load increases the system could switch to air delivered to the windshield and the floor (DEFOG mode). D The amber light indicates the same temperature as set for the driver. D The red lights indicate a warmer temperature than that of the driver. that of the driver. D The blue lights indicate a cooler temperature than Hot Weather Example: When you start the vehicle in hot weather, 80_F (27_C) or after being parked during the day in full sun, if your driver set temperature is 75_F (24_C) and you are in full automatic mode, the system will automatically move the temperature to full cold. 3-6