First Edition for Buick LeSabre Owner's Manual ± 1999
yellowblue
3-5
Automatic Operation
Press the AUTO button when you want the system to
automatically adjust to changes in the temperature inside
the vehicle, the outside temperature and the sun load on
the vehicle. When the system is set for automatic
operation, air will come from the floor, middle or
windshield outlets depending on the temperature inside
the vehicle, the outside temperature and sun load. Fan
speed will vary as the system gets to and maintains the
comfort setting you have selected through the use of the
TEMP button.
To find your comfort setting, start with the system in
AUTO mode and the TEMP button adjusted to 75F
(24C), give the vehicle about 20 minutes to stabilize,
and adjust your comfort setting if necessary, by using
the TEMP button. The display will show the comfort
setting for a few seconds and then it will display the
outside temperature. If you want to see your current
automatic fan speed, airflow direction and comfort
setting, press the AUTO button.
In cold weather, the system will delay turning on the
fan, to avoid blowing cold air. The length of the delay
depends on the engine coolant temperature and the
outside temperature. Pushing the FAN, AIR FLOW or
FRONT buttons will override this delay, turn off the
AUTO setting and change the fan speed.Manual Operation
You may also manually adjust the air delivery or
fan speed.
AIR FLOW: This button is used to change the direction
of the airflow. The airflow choices available are FLOOR,
FLOOR
-MID, MID and WINDSHIELD-FLOOR. If the
system is set for AUTO, pressing the AIR FLOW button
will display the current airflow direction and the comfort
setting. Press the AIR FLOW up or down button again to
change the direction of the airflow.
If the AIR FLOW up button is selected while in the
FRONT defrost mode, the system will direct the air
toward the windshield and the floor. If the AIR FLOW
down button is selected while in the FRONT defrost
mode, the system will direct the air toward the floor, and
the FRONT defrost mode will cancel. Notice the arrows
in the display.
OFF: If the passenger comfort control is turned on, it can be
turned off by pressing the OFF button once. Pressing the OFF
button a second time will turn off the main system. Turning
off the main system causes the fan to turn off and the airflow
to be directed toward the floor. The system will still try to
keep the interior of the vehicle at the previous chosen
comfort setting. The outside temperature will show on the
display when the system is OFF.
First Edition for Buick LeSabre Owner's Manual ± 1999
yellowblue
3-6
The ventilation system always allows fresh air to flow
through your vehicle when the vehicle is moving even
with the system in the OFF mode.
VENT: The VENT button allows outside air to flow
through your vehicle without the air conditioning
compressor working. Selecting VENT and the AUTO
button at the same time allows the system to control
automatically without the use of the air conditioning
compressor or the use of the RECIRC mode. To turn off
the VENT selection, push the VENT button again.
RECIRC: When RECIRC is selected, the system will
limit the amount of outside air entering your vehicle. This
is helpful when you are trying to cool the interior of the
vehicle quickly or limit the amount of outside air entering
your vehicle. RECIRC and AUTO may be selected at the
same time. The system will remain in RECIRC until the
ignition is turned off, then the system will return back to
the previously selected mode. Deselecting the RECIRC
button will also turn off the RECIRC function. RECIRC
can be selected in all manual airflow modes except
FRONT defrost and VENT.
FRONT: This selection is used to defrost the windshield
by directing the airflow toward the windshield.If FRONT is selected while in the AUTO mode, the fan
speed and the air temperature from the front defroster will
vary. If a manual fan speed setting is selected, the fan
speed will remain at that selection until another fan speed
selection is made or the AUTO mode is selected. To turn
off FRONT, press the AUTO or AIR FLOW button.
FRONT defrost will work better if any ice or snow is
cleared from the hood and the air inlet area between the
base of the windshield and the hood.
Air Conditioning
On hot days, open the windows long enough to let hot
inside air escape. This reduces the time it takes for your
vehicle to cool down. Then keep your windows closed
for the air conditioner to work its best.
If you have the electronic touch system, for quick
cool
-down on very hot days, use MAX with the
temperature and fan speed adjusted to COOL and
HIGH. If this setting is used for long periods of time, the
air in your vehicle may become too cold and dry.
For normal cooling on hot days, use NORM and adjust
the temperature and fan speed for your comfort. If
RECIRC is selected while in the NORM air
conditioning mode, the system works like MAX and
recirculates the air.
