Buick Lucerne 2010 Owner's Manual page 179

A. Fan Control
B. Temperature Control
C. Air Delivery Mode
Control
D. Recirculation
E. Air Conditioning
F. Rear Window
Defogger
Operation
(Off): Turns the climate control system off. Outside
air still enters the vehicle and is directed to the floor.
The airflow direction and temperature can be adjusted.
Temperature Control: Turn clockwise or
counterclockwise to increase or decrease the
temperature.
9
(Fan Control): Turn clockwise or counterclockwise
to increase or decrease the fan speed. The fan speed is
temporarily reduced between the transition to a new
mode. The fan will resume when the new mode is
complete.
If the airflow seems low when the fan speed is at the
highest setting, the passenger compartment air filter
may need to be replaced. For more information, see
Passenger Compartment Air Filter on page 4 28 and
Scheduled Maintenance on page 7 3.
Air Delivery Mode Control: Turn clockwise or
counterclockwise to change the direction of the airflow
in the vehicle.
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