Buick 2010 Lucerne - Manual (Page 180)

To change the current mode, select one of the following:
H
(Vent): Air is directed to the instrument panel
outlets.
)
(Bi-Level): Air is divided between the instrument
panel outlets and the floor outlets. Slightly cooler air is
directed to the instrument panel outlets and warmer air
is directed to the floor outlets.
6
(Floor): Air is directed to the floor outlets, with some
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.
-
(Floor/Defog): This clears the windows of fog or
moisture. Air is directed to the windshield and side
window outlets and to the floor outlets. The system
runs the air conditioning compressor unless the outside
temperature is near or below freezing.
0
(Defrost): This mode clears the windshield of
fog or frost more quickly. Air is directed to the
windshield and side window outlets. The system runs
the air conditioning compressor unless the outside
temperature is near or below freezing.
#
(Air Conditioning): Press to turn the air
conditioning system on or off. An indicator light below
the button comes on to show that this mode is on. Air
conditioning can be selected in any mode as long as
the fan knob is not in the off position.
On hot days during the vehicle's initial start-up, open
the windows to let hot inside air escape; then close
them. This helps to reduce the time it takes for the
vehicle to cool down. It also helps the system to operate
more efficiently.
For quicker cool down on hot days, do the following:
1. Select
H
.
2. Select
h
.
3. Select
#
.
4. Select the coolest temperature.
5. Select the highest fan speed.
The air-conditioning system removes moisture from the
air, so a small amount of water might drip under the
vehicle while idling or after turning off the engine. This
is normal.
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