1999 BUICK LESABRE change time

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2-46
When you are sitting in a comfortable driving position,
adjust the mirror so you can see clearly behind your
vehicle. The day
-night adjustment allows you to
adjust the mirror to avoid glare from the headlamps
behind you.
The integral reading lamps are turned on or off by
pressing the toggle switch at the bottom of the mirror.
These lamps are also part of the courtesy lamps
described earlier in this section.
Electrochromic Day/Night Rearview Mirror
(If Equipped)
Your vehicle may have an automatic electrochromic
day/night rearview mirror.
When this feature is turned on, the mirror automatically
changes to reduce glare from headlamps behind you. A
photocell on the mirror senses when it is becoming dark
outside. Another photocell built into the mirror face
senses when headlamps are behind you.
At night, when the glare is too high, the mirror will
gradually darken to reduce glare (this change may take a
few seconds). The mirror will return to its clear daytime
state when the glare is reduced.Mirror Operation
To turn on the automatic dimming feature, press
AUTO. To turn off automatic dimming, press OFF.
The green indicator light will be illuminated when this
feature is active.
Time Delay
The automatic mirror has a time delay feature which
prevents unnecessary switching from the night back to
the day position. This delay prevents rapid changing of
the mirror as you drive under lights and through traffic.

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Cleaning the Photocells
Use a cotton swab and glass cleaner to clean the
photocells when necessary.
Electrochromic Day/Night Rearview Mirror
with Compass (If Equipped)
Your vehicle may have an electrochromic inside
rearview mirror with a compass.
When set in the MIRROR position, this mirror
automatically changes to reduce glare from headlamps
behind you. A time delay feature prevents rapid
changing from the day to night positions while driving
under lights and through traffic.The mirror also includes an eight
-point compass display
in the upper right corner of the mirror face. When on,
the compass automatically calibrates as the vehicle
is driven.
When cleaning the mirror, use a paper towel or similar
material dampened with glass cleaner. Do not spray
glass cleaner directly on the mirror as that may cause
the liquid cleaner to enter the mirror housing. Use a
cotton swab and glass cleaner to clean the photocells
when necessary.
Mirror Operation

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2-69 Change Oil Soon Light (If Equipped)
This light is activated
by the Engine Oil Life
Monitor System.
The CHANGE OIL SOON light turns on for three
seconds as a bulb check each time the ignition key is
turned to RUN. It will stay on for 60 seconds once
90 percent of the oil life has been used and each time the
engine is started after that. If the CHANGE OIL SOON
light is on continuously, there is a problem with the
Engine Oil Life Monitor System and service is required.
The Engine Oil Life Monitor determines the condition
of the engine oil and lets you know when the oil should
be changed. See ªEngine Oilº in the Index.
The Engine Oil Life Monitor receives information about
engine speed, coolant temperature and vehicle speed to
determine how much the oil has degraded.
When to change your oil depends on your driving habits
and conditions. The CHANGE OIL SOON light may
turn on as early as 2,000 miles (3 218 km) or less for
harsh circumstances.For additional information, see ªEngine Oil, When to
Changeº in the Index. To reset the Oil Life Monitor, see
ªEngine Oil Life Monitorº in the Index.
Cruise Light
The cruise light comes on
whenever you set your
cruise control. See ªCruise
Controlº in the Index.
Washer Fluid Low Light (If Equipped)
When the vehicle has a low
fluid condition, this light
will come on to remind
you to get more washer
fluid soon.

First Edition for Buick LeSabre Owner's Manual ± 1999
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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 75
F
(24
C), 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
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3-7
On sunny days, when the air is moderately warm or
cool, use BI
-LEV to deliver warm air to the floor and
cooler air to the middle instrument panel outlets. On
days like these, the sun may adequately warm your
upper body, but your lower body may not be warm
enough. To warm or cool the air delivered, adjust the
TEMPERATURE lever.
The amount of fresh air entering the vehicle is limited
when RECIRC is selected. This is helpful when you are
trying to cool the air in your vehicle or limit the air
entering the vehicle.
If your vehicle has the Dual Automatic Comfortemp
system and it is set for AUTO, on very hot days, the
system will automatically enter the RECIRC mode and
the temperature door will be positioned at the full cold
position for maximum cooling. If the system is not in
the AUTO mode, RECIRC should be selected to provide
maximum cooling. You can choose the extreme comfort
setting of 60
F (16
C), but the system will not cool any
faster by choosing the extreme comfort setting.
When the air conditioner is on, you may sometimes
notice slight changes in your vehicle's engine speed and
power. This is normal because the system is designed to
cycle the compressor on and off to keep the
desired temperature.Heating
If your vehicle has the electronic touch system, on
cold days, use HTR with the TEMPERATURE lever
toward WARM.
If your vehicle has the Dual Automatic Comfortemp
system, and on cold days, if the AUTO mode is selected,
the system will automatically direct the air toward the
floor and the temperature door will be positioned at the
full hot position. You can choose the extreme comfort
setting of 90
F (32
C) but the system will not warm up
any faster by selecting the extreme comfort setting. If
the outside temperature is cold, the fan will be delayed
to avoid blowing cold air. Pushing the FAN, AIR FLOW
or FRONT buttons will override this delay, turn off the
AUTO mode and change the fan speed.
With each system, outside air will be brought in and sent
through the floor outlets. The heater works best if you
keep your windows closed while using it.

First Edition for Buick LeSabre Owner's Manual ± 1999
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3-8 Defogging and Defrosting
If you have the electronic touch system, adjust the
TEMPERATURE lever toward WARM and the FAN
lever toward HIGH.
If you have the Dual Automatic Comfortemp system,
use the FRONT button to defog or defrost the
windshield. By choosing this button, the airflow will be
directed at the windshield. Adjust your comfort level by
pressing the TEMP up or down arrow. The fan speed
will be controlled by the system. You can change the fan
speed by pressing the top of the FAN button to increase
speed, and the bottom of the button to decrease speed.
To reduce the chance of fogging your windows in cold
weather, using the electronic touch system, select HTR
to supply air through the floor outlets. Then move the
FAN lever to HIGH for a few moments before driving
away. This will blow moist air from the intake outlets
toward the floor, not the windshield. If you have the
Dual Automatic Comfortemp system, the AUTO setting
will do this for you. Manual operation of the automatic
comfortemp system in the FLOOR mode will also
supply air through the floor outlets.
Rear Window Defogger
C±43±0375±S
The lines you see on the
rear window warm the
glass. Press this button to
start warming your window.
After 10 minutes it will turn off by itself, or pressing the
button during the heating cycle will turn it off. If you
need additional warming time, push the button again.
The system will then operate for five minutes before
going off by itself.

First Edition for Buick LeSabre Owner's Manual ± 1999
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3-12
Audio Systems
Your Delco Electronics audio system has been designed
to operate easily and give years of listening pleasure.
You will get the most enjoyment out of it if you acquaint
yourself with it first. Find out what your Delco
Electronics system can do and how to operate all its
controls, to be sure you're getting the most out of the
advanced engineering that went into it.
Setting the Clock
Press and hold HRS until the correct hour appears. Press
and hold MIN until the correct minute appears.
You may set the clock with the ignition off if you press
RECALL first and follow the same procedure
described above.
AM-FM Stereo
DE±43±0020±V
Playing the Radio
VOLUME: This knob turns the system on and off and
controls the volume. To increase volume and turn the
radio on, turn the knob clockwise. Turn it
counterclockwise to decrease volume.
RECALL: Press the upper knob briefly to recall the station
being played or to display the clock. To change what is
normally shown on the display (station or time), press the
knob until you see the display you want, then hold the knob
until the display flashes. If you press the knob when the
ignition is off, the clock will show for a few seconds.

First Edition for Buick LeSabre Owner's Manual ± 1999
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3-14 AM-FM Stereo with Cassette Tape Player
(If Equipped)
DE±43±0001±V
Playing the Radio
VOLUME: This knob turns the system on and off and
controls the volume. To increase volume and turn the
radio on, turn the knob clockwise. Turn it
counterclockwise to decrease volume.RECALL: Press the upper knob briefly to recall the
station being played or to display the clock. To change
what is normally shown on the display (station or time),
press the knob until you see the display you want, then
hold the knob until the display flashes. If you press the
knob when the ignition is off, the clock will show for a
few seconds.
Finding a Station
AM
-FM: Press the lower knob to switch between AM,
FM1 and FM2. The display shows your selection.
TUNE: Turn the lower knob to choose radio stations.
SEEK: Press the right or left arrow to go to the next
higher or lower station and stay there. The sound will
mute while seeking.
SCAN: Press one of the SEEK arrows for two seconds,
and SCAN will appear on the display. Use SCAN to
listen to stations for a few seconds. The radio will go to
a station, stop for a few seconds, then go on to the next
station. Press one of the SEEK arrows again to stop
scanning. The sound will mute while scanning.