2012 Buick LaCrosse Owner Manual - Page 270

8-8 Climate Controls For eAssist vehicles that have the auto defog feature, 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 instant fogging. 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. Eco # (Eco Air Conditioning, If Equipped): 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. The eco a/c setting allows higher humidity inside the vehicle and window fogging before the engine restarts. Pressing the 0 button during an auto stop will restart the engine to prevent window fogging. To reach comfort levels quickly during an auto stop, the engine will restart if the air conditioner is off and the To change the current mode, select one of the following: Y (Vent): Air is directed to the instrument panel outlets. \ (Bi-Level): Air is divided between the instrument panel outlets and the floor outlets. # (Comfort Air Conditioning): Press to turn the air conditioning system on or off. If the climate control system is turned off or the outside temperature falls below freezing, the air conditioner will not run. Pressing this button cancels automatic air conditioning and turns off the air conditioner. Press AUTO to return to automatic operation and the air conditioner runs automatically 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. C (Tri‐Level): Air is divided between the windshield, instrument panel, and floor outlets. [ (Floor): floor outlets. Air is directed to the - (Defog): Clears the windows of fog or moisture. Air is directed to the windshield and floor outlets. 0 (Defrost): Clears the windshield of fog or frost more quickly. Air is directed to the windshield. For best results, clear all snow and ice from the windshield before defrosting.