1999 BUICK LESABRE tow

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When the DRL are on, only your high-beam headlamps
will be on. The parking lamps, taillamps, sidemarker
and other lamps won't be on. Your instrument panel
lights won't be on either.
When it is dark enough outside, your low
-beam
headlamps will come on. The other lamps that turn on
with your headlamps will also turn on. When it is bright
enough outside, the regular lamps will go off, and your
high
-beam headlamps change to the reduced brightness
of DRL.
To turn off all exterior lighting at night when you are
parked, turn off the headlamps and move the twilight
sentinel control all the way toward MIN. The exterior
lamps will turn back on automatically when you move
the transaxle out of PARK (P).
As with any vehicle, you should turn on the regular
headlamp system when you need it.
Cornering Lamps (If Equipped)
The cornering lamps are designed to turn on when you
signal a turn. This will provide more lighting when
cornering at night.
Twilight Sentinel
Twilight sentinel turns your
lamps on and off by sensing
how dark it is outside.
To operate it, leave the lamp switch off.
If you move the control all the way to MAX, your
headlamps will remain on for three minutes after you
turn off your engine. As you move the control toward
MIN, the headlamps will turn off more quickly when
you turn off your engine. You can change this delay time
from only a few seconds to three minutes.

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The exterior lamps can be completely shut off while the
vehicle is in PARK (P) by sliding the twilight sentinel
control all the way toward MIN, and release. To turn the
exterior lamps back on, slide the control all the way
toward MIN again, and release; or, shift out of
PARK (P).
Light Sensor
Your twilight sentinel and
DRL work with the light
sensor on top of the
instrument panel. Don't
cover it up. If you do, the
sensor will read ªdarkº and
the headlamps will turn on.
Interior Lamps
Instrument Panel
Intensity/Brightness Control
The instrument panel
intensity can be adjusted by
moving this lever between
LO and HI. The instrument
panel lights will be on only
when the headlamps are on.
The interior courtesy lamps
can be turned on by sliding
the lever all the way to the
right, to INT.
Courtesy Lamps
When any door is opened, several lamps go on. They
make it easy for you to enter and leave the vehicle. You
can also turn these lamps on by sliding the PANEL
LIGHTS switch to INT (Interior).

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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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NOTICE:
Don't put papers or other flammable objects
into your ashtrays. Hot cigarettes or other
smoking materials could ignite them, causing
a damaging fire.
To use a lighter, push the center all the way in and let it
go. When it is ready, the center will pop back by itself.
Pull out the entire unit to use it.
NOTICE:
Don't hold a cigarette lighter in with your hand
while it is heating. If you do, it won't be able to
back away from the heating element when it's
ready. That can make it overheat, damaging the
lighter and the heating element.
Sun Visors
Illuminated Visor Vanity Mirrors
(If Equipped)
When you open the cover to either the passenger's or
driver's visor vanity mirror, the lamps will turn on. The
brightness of the lamp can be adjusted by sliding the
switch up or down.
Dual Sun Visors
Each sun visor has two parts, so that both the windshield
and door glass can be shaded at the same time. To use
the dual sun visors, flip the first visor down and turn
toward the window. Then, flip the second visor down
toward the windshield.

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If your vehicle is equipped
with the gage cluster, this
gage shows voltage in the
electrical system.
The normal range is 11 to 15 volts. If the gage reading
stays in either red range, or the battery warning light
turns on, have your dealer check the electrical system.
Brake System Warning Light
Your vehicle's hydraulic brake system is divided into
two parts. If one part isn't working, the other part can
still work and stop you. For good braking, though, you
need both parts working well.If the warning light comes on, there is a brake problem.
Have your brake system inspected right away.
Standard Cluster Gage Cluster
One of these lights should come on when you turn the
key to START. If it doesn't come on then, have it fixed
so it will be ready to warn you if there's a problem.
If the light and chime come on while you are driving,
pull off the road and stop carefully. You may notice that
the pedal is harder to push. Or, the pedal may go closer
to the floor. It may take longer to stop. If the light is still
on, have the vehicle towed for service. (See ªTowing
Your Vehicleº in the Index.)

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CAUTION:
Your brake system may not be working properly
if the brake system warning light is on. Driving
with the brake system warning light on can lead
to an accident. If the light is still on after you've
pulled off the road and stopped carefully, have
the vehicle towed for service.
When the ignition is on, the brake system warning light
will also come on when you set your parking brake.
The light will stay on if your parking brake doesn't
release fully. If you try to drive off with the parking
brake set, a chime will also come on until you release
the parking brake. If the light and chime stay on after
your parking brake is fully released, it means you have
a brake problem.
Anti-Lock Brake System Warning Light
With the anti-lock brake
system, the light(s) will
come on when you start
your engine and may stay
on for several seconds.
That's normal.
If the light stays on, turn the ignition to OFF. Or, if the
light comes on when you're driving, stop as soon as
possible and turn the ignition off. Then start the engine
again to reset the system. If the light still stays on, or
comes on again while you're driving, your vehicle needs
service. If the regular brake system warning light isn't
on, you still have brakes, but you don't have anti
-lock
brakes. If the regular brake system warning light is also
on, you don't have anti
-lock brakes and there's a
problem with your regular brakes. See ªBrake System
Warning Lightº earlier in this section.
The anti
-lock brake system warning light should come
on briefly when you turn the ignition key to RUN. If the
light doesn't come on then, have it fixed so it will be
ready to warn you if there is a problem.

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This light should come on, as a check to show you it is
working, when the ignition is on and the engine is not
running. If the light doesn't come on, have it repaired.
This light will also come on during a malfunction in one
of two ways:

Light Flashing
-- A misfire condition has been
detected. A misfire increases vehicle emissions and
may damage the emission control system on your
vehicle. Dealer or qualified service center diagnosis
and service may be required.

Light On Steady
-- An emission control system
malfunction has been detected on your vehicle.
Dealer or qualified service center diagnosis and
service may be required.
If the Light Is Flashing
The following may prevent more serious damage to
your vehicle:

Reducing vehicle speed.

Avoiding hard accelerations.

Avoiding steep uphill grades.

If you are towing a trailer, reduce the amount of
cargo being hauled as soon as it is possible.If the light stops flashing and remains on steady, see ªIf
the Light Is On Steadyº following.
If the light continues to flash, when it is safe to do so,
stop the vehicle. Find a safe place to park your vehicle.
Turn the key off, wait at least 10 seconds and restart the
engine. If the light remains on steady, see ªIf the Light
Is On Steadyº following. If the light is still flashing,
follow the previous steps, and drive the vehicle to your
dealer or qualified service center for service.
If the Light Is On Steady
You may be able to correct the emission system
malfunction by considering the following:
Did you recently put fuel into your vehicle?
If so, reinstall the fuel cap, making sure to fully install
the cap. See ªFilling Your Tankº in the Index. The
diagnostic system can determine if the fuel cap has been
left off or improperly installed. A loose or missing fuel
cap will allow fuel to evaporate into the atmosphere. A
few driving trips with the cap properly installed should
turn the light off.

First Edition for Buick LeSabre Owner's Manual ± 1999
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VENT: This setting directs outside air through the
middle instrument panel outlets. The air conditioning
compressor is not working when VENT is selected.
HTR: This button directs air out of the heater outlets.
Most of the air will come from the floor outlets while
some air will flow through the windshield and side
window outlets. The air conditioning compressor is not
working when HTR is selected.
BLEND: When BLEND is selected, the airflow will be
split between the windshield and the floor outlets. The
air conditioning compressor will be operating.
FRONT: This setting directs most of the airflow toward
the windshield.
OFF: The ventilation system always allows fresh air to
flow through your vehicle when it is moving. The
system will try to keep the air at a previously chosen
temperature. When the system is off, the blower fan is
also off.
MAX: This setting directs airflow through the middle
instrument panel outlets. The amount of outside air
entering your vehicle is limited with this setting. The air
conditioning compressor is on in this mode.NORM: This setting cools the outside air entering your
vehicle and directs it through the middle instrument
panel outlets. The air conditioner is on in this mode.
BI
-LEV: This setting directs warm air to the floor and
cooler air to the middle instrument panel outlets. The air
conditioner is on in this mode.
Dual Automatic Comfortemp
Climate Control (If Equipped)
If your vehicle has the Dual Automatic Comfortemp
Climate Control option, the following information tells
you how it works.
You will hear a beep each time a button is pushed and a
light on the button will indicate which function is active.
The lights are on all buttons except TEMP, FAN and
AIR FLOW. The display will show fan speed, comfort
level setting and airflow direction for a few seconds
whenever AUTO is selected, and then it will display the
outside temperature. The outside temperature reading is
most accurate when the vehicle is moving. During stops,
the display shows the previous temperature for best
accuracy and system control.