1999 BUICK LESABRE rear view mirror

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2-45 Rear Reading Lamps (If Equipped)
The lamp, switch and a coat hanger are above each rear
door. Slide the switch to turn the lamp on or off.
Battery Rundown Protection
This feature automatically turns off the interior lamps if
any are left on for more than 10 minutes when the
ignition is off or a door is left open. This will keep your
battery from running down.
This feature also shuts off the exterior lamps if they are
left on for more than 10 minutes when the ignition is
OFF. You may override this feature for the exterior
lamps by turning the lamps off and then back on after
the ignition is turned to OFF. If you do this, the exterior
lamps will stay on until you manually turn them off.If the feature is enabled for the interior and exterior
lamps, all lamps should turn off at approximately the
same time.
Mirrors
Day/Night Manual Rearview Mirror
With Integral Reading Lamps

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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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2-47
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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2-49
3. Press the COMPASS button on the bottom of the
mirror until the new zone number appears in the
display. After you stop pressing the button, the
display will show a compass direction within a few
seconds. (This is the automatic calibration mode.
Drive in a circle to calibrate the mirror. See
ªCompass Calibrationº explained previously.)
Manual Remote Control Mirror
To adjust the driver's side
outside mirror, rotate
the knob located on the
driver's door. The right
outside mirror must be
adjusted manually.
The outside rearview mirror should be adjusted so you
can just see the side of your vehicle when you are sitting
in a comfortable driving position.
To adjust your passenger's side mirror, sit in the driver's
seat and have a passenger adjust the mirror for you.

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2-50 Power Remote Control Mirrors
(If Equipped)
If your vehicle has the
outside power remote
mirrors, the control
is located on the
driver's door.
Move the switch in the middle of the control to choose
the right or left mirror. Push the arrow controls in the
direction you want to move the mirror.
Adjust each mirror so you can see the side of your
vehicle and the area behind your vehicle.
Convex Outside Mirror
Your passenger's side mirror is convex. A convex
mirror's surface is curved so you can see more from the
driver's seat.
CAUTION:
A convex mirror can make things (like other
vehicles) look farther away than they really are.
If you cut too sharply into the right lane, you
could hit a vehicle on your right. Check your
inside mirror or glance over your shoulder before
changing lanes.
Automatic Dimming/Heated Outside
Rearview Mirror (If Equipped)
If you have this feature, the outside mirrors will adjust
for the glare of headlamps behind you. This feature is
controlled by the on and off settings on the automatic
electrochromic day/night rearview mirror. See
ªElectrochromic Day/Night Rearview Mirrorº earlier in
this section.
When you operate the rear window defogger, a defogger
also warms the heated driver's and passenger's outside
rearview mirrors to help clear them of ice and snow.

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Here are some tips on night driving.

Drive defensively.

Don't drink and drive.

Adjust your inside rearview mirror to reduce the
glare from headlamps behind you.

Since you can't see as well, you may need to
slow down and keep more space between you and
other vehicles.

Slow down, especially on higher speed roads. Your
headlamps can light up only so much road ahead.

In remote areas, watch for animals.

If you're tired, pull off the road in a safe place
and rest.
Night Vision
No one can see as well at night as in the daytime. But as
we get older these differences increase. A 50
-year-old
driver may require at least twice as much light to see the
same thing at night as a 20
-year-old.
What you do in the daytime can also affect your night
vision. For example, if you spend the day in bright
sunshine you are wise to wear sunglasses. Your eyes will
have less trouble adjusting to night. But if you're
driving, don't wear sunglasses at night. They may cutdown on glare from headlamps, but they also make a lot
of things invisible.
You can be temporarily blinded by approaching
headlamps. It can take a second or two, or even several
seconds, for your eyes to readjust to the dark. When you
are faced with severe glare (as from a driver who
doesn't lower the high beams, or a vehicle with
misaimed headlamps), slow down a little. Avoid staring
directly into the approaching headlamps.
Keep your windshield and all the glass on your vehicle
clean
-- inside and out. Glare at night is made much
worse by dirt on the glass. Even the inside of the glass
can build up a film caused by dust. Dirty glass makes
lights dazzle and flash more than clean glass would,
making the pupils of your eyes contract repeatedly.
Remember that your headlamps light up far less of a
roadway when you are in a turn or curve. Keep your
eyes moving; that way, it's easier to pick out dimly
lighted objects. Just as your headlamps should be
checked regularly for proper aim, so should your eyes
be examined regularly. Some drivers suffer from night
blindness
-- the inability to see in dim light -- and
aren't even aware of it.

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4-23
Highway Hypnosis
Is there actually such a condition as ªhighway hypnosisº?
Or is it just plain falling asleep at the wheel? Call it
highway hypnosis, lack of awareness, or whatever.
There is something about an easy stretch of road with the
same scenery, along with the hum of the tires on the road,
the drone of the engine, and the rush of the wind against
the vehicle that can make you sleepy. Don't let it happen
to you! If it does, your vehicle can leave the road in less
than a second, and you could crash and be injured.
What can you do about highway hypnosis? First, be
aware that it can happen.
Then here are some tips:

Make sure your vehicle is well ventilated, with a
comfortably cool interior.

Keep your eyes moving. Scan the road ahead and to
the sides. Check your rearview mirrors and your
instruments frequently.

If you get sleepy, pull off the road into a rest, service
or parking area and take a nap, get some exercise, or
both. For safety, treat drowsiness on the highway as
an emergency.
Hill and Mountain Roads
Driving on steep hills or mountains is different from
driving in flat or rolling terrain.

First Edition for Buick LeSabre Owner's Manual ± 1999
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9-4
Electrical Equipment, Adding 3-34, 6-58 . . . . . . . . . . . . . . .
Electrical System 6-58 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrochromic Day/Night Rearview Mirror 2-46 . . . . . . . . . .
With Compass 2-47 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electronic Level Control 4-31 . . . . . . . . . . . . . . . . . . . . . . . . .
Electronic Touch Climate Control 3-2 . . . . . . . . . . . . . . . . . . .
Engine 6-10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accessory Belt 6-66 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Coolant 6-22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Coolant Heater 2-23 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Coolant Level Check 7-33 . . . . . . . . . . . . . . . . . . . . . . . . . .
Coolant Temperature Gage 2-64 . . . . . . . . . . . . . . . . . . . . .
Coolant Temperature Warning Light 2-64 . . . . . . . . . . . . . .
Exhaust 2-15, 2-31, 2-33, 2-34, 4-35 . . . . . . . . . . . . . . . . .
Fuse Block (Driver's Side) 6-59 . . . . . . . . . . . . . . . . . . . . . .
Fuse Block (Passenger's Side) 6-62 . . . . . . . . . . . . . . . . . . .
Identification 6-57 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Oil Level Check 7-33 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Overheating 5-9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Running While Parked 2-32 . . . . . . . . . . . . . . . . . . . . . . . . .
Specifications 6-64 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Starting Your 2-21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine Cooling When Trailer Towing 4-38 . . . . . . . . . . . . . . .
Engine Oil 6-11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adding 6-12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Additives 6-14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking 6-12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Life Monitor 2-69 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pressure Gage 2-67 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pressure Light 2-67 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Used 6-15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
What Kind to Use 6-13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
When to Change 6-14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Entry Lighting, Delayed 2
-43 . . . . . . . . . . . . . . . . . . . . . . . . . .
Ethanol 6-4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Exhaust, Engine 2-15, 2-31, 2-33, 2-34, 4-35 . . . . . . . . . . . .
Exit Lighting, Delayed 2-43 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Express-Down Window 2-33 . . . . . . . . . . . . . . . . . . . . . . . . . .
Exterior Lamps 2-40 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fabric Cleaning 6-49 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fan Control, Climate Control System 3-2, 3-4 . . . . . . . . . . . .
Filling a Portable Fuel Container 6-7 . . . . . . . . . . . . . . . . . . . .
Filling Your Tank 6-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Filter, Air 6-16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Filter, Engine Oil 6-14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Finish Care 6-53 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Finish Damage 6-55 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
First Gear, Automatic Transaxle 2-27 . . . . . . . . . . . . . . . . . . .
Flashers, Hazard Warning 5-2 . . . . . . . . . . . . . . . . . . . . . . . . .
Flat Tire, Changing 5-20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fluids and Lubricants 7-39 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Foreign Countries, Fuel 6-5 . . . . . . . . . . . . . . . . . . . . . . . . . . .
French Language Manual ii. . . . . . . . . . . . . . . . . . . . . . . . . . .
Front Turn Signal Bulb Replacement 6
-36 . . . . . . . . . . . . . . . .
Fuel 6-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Canada 6-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Filling a Portable Container 6-7 . . . . . . . . . . . . . . . . . . . . . .
Filling Your Tank 6-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gage 2-70 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
In Foreign Countries 6-5 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuses and Circuit Breakers 6-59 . . . . . . . . . . . . . . . . . . . . . . .