Buick 2011 Lucerne Owner's Manual page 177

air by pressing the outside air button. The next time
AUTO fan or mode is selected, it will reset back to
AUTO operation.
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.
If the temperature is adjusted while the system is off,
the display will light to show the current settings.
buttons next to the fan control to increase or decrease
the temperature inside the vehicle.
these buttons next to the mode control to increase or
decrease the temperature for the front passenger. If the
passenger climate control system is off, pressing one of
these buttons turns it on.
Turn clockwise or counterclockwise
to increase or decrease the fan speed. Turning this
control completely counterclockwise turns on the
automatic fan operation.
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 24 and
Scheduled Maintenance on page 7 3.
counterclockwise to change the direction of the airflow
in the vehicle.
To change the current mode, select one of the following:
panel outlets and the floor outlets. In automatic
operation, cooler air is directed to the upper outlets and
warmer air to the floor outlets.
Press these
air directed to the windshield and side window outlets.
If recirculation is selected while in this mode, it stays on
for three minutes to reduce windshield fogging.
Press
or moisture. Air is directed to the floor outlets, with
some air directed to the windshield and side window
outlets. The system turns off recirculation and runs the
air-conditioning compressor unless the outside
temperature is at or below freezing. The recirculation
mode cannot be selected while in the floor/defog mode.
windshield more quickly. Air is directed to the
windshield and the side window outlets. The system
automatically turns off recirculation and runs the
air-conditioning compressor, unless the outside
temperature is at or below freezing. Recirculation
cannot be selected while in the defrost mode.
Turn clockwise or
Air is directed to the instrument panel outlets.
Air is divided between the instrument
Air is directed to the floor outlets, with some
This mode clears the windows of fog
This mode removes fog or frost from the
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