Buick 2007 LaCrosse Owner's Manual page 169

Operation
OFF: Turn the left knob to this position to turn the
climate control system off.
9
(Fan): Turn the knob by this symbol, located
on the left side of the climate control panel,
clockwise or counterclockwise to increase or
decrease the fan speed. The fan speed will be
temporarily reduced between the transition
to a new mode. The fan will resume the original
speed when the transition to the new mode
is complete.
Temperature Control: Turn the center knob
clockwise or counterclockwise to increase
or decrease the temperature inside your vehicle.
Use the right knob to select from the
following modes:
H
(Vent): This mode directs outside air to the
instrument panel outlets. If driving in city
traffic, and the vehicle is stopped and idling, or the
weather is hot, turning on the recirculation
mode helps to prevent the air inside the vehicle
from becoming stale. After five minutes recirculate
will allow some outside air into the vehicle.
)
(Bi-Level): This mode directs half of the air to
the instrument panel outlets, and the remaining
air to the floor outlets. Some air may be directed
toward the windshield. Slightly cooler air is directed
to the instrument panel outlets and warmer air is
directed to the floor outlets.
6
(Floor): This mode directs most of the air to
the floor outlets with some air directed toward
the side window outlets and a little air directed to
the windshield.
In this mode, the system will automatically use
outside air. The air conditioning compressor will be
engaged unless the outside temperature is 40°F
(4°C) or below.
169