2013 Buick Regal Owner Manual - Page 194

8-4 Climate Controls For eAssist vehicles, auto stops can occur in defrost mode. In this mode, the auto stops are shorter and less frequent than other air delivery modes to prevent flash fogging. # (Eco Air Conditioning, If Equipped): Press # to turn on the eco air conditioning. The button indicator light turns green when eco a/c is on. This setting balances fuel economy and air conditioning comfort. In warm weather conditions, auto stops may occur more frequently and the vehicle interior may be warmer as compared to the comfort air conditioning. This setting allows higher humidity inside the vehicle and window fogging before the engine restarts. Pressing the 0 button during an auto stop may restart the engine to prevent window fogging. To reach comfort levels quickly during an auto stop, the engine will restart if: . . The climate control power is turned on and the system is set to AUTO, Eco # , or Comfort # mode. The temperature control is adjusted cooler by more than 0.5°C (1°F). . # (Comfort Air Conditioning): Press to turn the air conditioning on or off. The button indicator light turns blue when the a/c is on. If the fan is turned off or the outside temperature falls below freezing, the air conditioner will not run. Press AUTO to return to automatic operation and the air conditioner runs as needed. When the indicator light is on, the air conditioner runs automatically to cool the air inside the vehicle or to dry the air needed to defog the windshield faster. For eAssist vehicles, an auto stop may occur if the climate control system determines the a/c compressor can be shut off and still maintain comfort levels with minimal windshield fogging. h (Recirculation): Press to turn on recirculation. An indicator light comes on. Air is recirculated to quickly cool the inside of the vehicle or prevent outside air and odors from entering. Auto Defog: The climate control system may have a sensor to automatically detect high humidity inside the vehicle. When high humidity is detected, the climate control system may adjust to outside air supply and turn on the air conditioner. The fan speed may slightly increase to help prevent fogging. If the climate control system does not detect possible window fogging, it returns to normal operation. For eAssist vehicles, when this mode is in use auto stops The air conditioner is off and AUTO, Eco # , or Comfort # is selected.