2015 Buick LaCrosse Owner Manual - Page 183

8-6 Climate Controls Operation Tips . Air Vents Use the louvers on the air vents to change the direction of the airflow. To open the vent, move the thumbwheel to t. To close the vent, move the thumbwheel to l. For vehicles with eAssist, there is a battery cooling air vent on the shelf behind the rear passenger seats below the rear window. Keep this air inlet clear from items that may block airflow. Proper airflow is required to keep the eAssist battery and control system cool. Maintenance Air Intake Clear away any ice, snow, or leaves from the air intake at the base of the windshield that can block the flow of air into the vehicle. Keep all outlets open whenever possible for best system performance. Keep the path under all seats clear of objects to help circulate the air inside the vehicle more effectively. Use of non-GM approved hood deflectors can adversely affect the performance of the system. . . Passenger Compartment Air Filter The filter removes dust, pollen, and other airborne irritants from outside air that is pulled into the vehicle. The filter should be replaced as part of routine scheduled maintenance. See Maintenance Schedule on page 11-2 for replacement intervals. For more information, see your dealer.