light BUICK LESABRE 1993 Workshop Manual

Off-Road Recovery
You may find sometime that your right wheels have
dropped off the edge
of a road onto the shoulder while
you’re driving.
If the level of the shoulder is only slightly below the
pavement, recovery should be fairly easy. Ease off the
accelerator and then, if there is nothing in the way, steer
so that your vehicle straddles the edge of the pavement.
You can turn the steering wheel up to 1/4 turn until the
right front tire contacts the pavement edge. Then turn
your steering wheel to go straight down the roadway. If
the shoulder appears to be about four inches
(100
mm) or more below the pavement, this difference can
cause problems.
If there is not enough room to pull
entirely onto the shoulder and stop, then follow the same
procedures. But if the right front tire scrubs against the
side of the pavement, do
NOT steer more sharply. With
too much steering angle, the vehicle may jump back
onto the road with
so much steering input that it crosses
over into the oncoming traffic before you can bring
it
back under control.
Instead, ease off again
on the accelerator and steering
input, straddle the pavement once more, then
try again.
Passing
The driver of a vehicle about to pass another on a
two-lane highway waits for just the right moment,
accelerates, moves around the vehicle ahead, then goes
back into the right lane again.
A simple maneuver?
Not necessarily! Passing another vehicle on a two-lane
highway is a potentially dangerous move, since the
passing vehicle occupies the same lane as oncoming
traffic for several seconds.
A miscalculation, an error in
judgment, or a brief surrender
to frustration or anger can
suddenly put the passing driver face
to face with the
worst
of all traffic accidents -- the head-on collision.

0 Try not to pass more than one vehicle at a time on
two-lane roads. Reconsider before passing the
next
vehicle.
Don’t overtake a slowly moving vehicle too rapidly.
Even though
the brake lights are not flashing, it may
be slowing down or starting to turn.
following driver to get ahead of you. Perhaps
you
can ease a little to the right.
If you’re being passed, make it easy for the
Loss of Control
Let’s review what driving experts say about what
happens when the three control systems (brakes, steering
and acceleration) don’t have enough friction where the
tires meet the road
to do what the driver has asked.
In
any emergency, don’t give up. Keep trying to steer and
constantly seek an escape route or area of less danger.
Skidding
In a skid, a driver can lose control of the vehicle.
Defensive drivers avoid most skids by taking reasonable
care suited to existing conditions, and by
not “over-
driving” those conditions. But skids are always possible. The
three types of skids correspond
to your Buick‘s
three control systems. In
the braking skid your wheels
aren’t rolling. In
the steering or cornering skid, too
much speed or steering in a curve causes tires to slip and
lose cornering force. And in the acceleration skid too
much throttle causes the driving wheels
to spin.
A cornering skid and an acceleration skid are best
handled by easing your
foot off the accelerator pedal.
If your vehicle starts to slide (as when
you turn a comer
on a wet, snow-or icexovered road), ease your foot off
the accelerator pedal as soon as your feel the vehicle start
to slide. Quickly steer the way
you want the vehicle to
go. If you start steering quickly enough, your vehicle will
straighten
out. As it does, straighten the front wheels.
Of course, traction is reduced when water, snow, ice,
gravel, or other material is
on the road. For safety, you’ll
want
to slow down and adjust your driving to these
conditions. It is important to slow down
on slippery
surfaces because stopping distance will be longer and
vehicle control more limited.
While driving
on a surface with reduced traction, try
your best
to avoid sudden steering, acceleration, or
braking (including engine braking by shifting
to a lower
gear). Any sudden changes could cause tires to slide.
You may
not realize the surface is slippery until your
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vehicle is skidding. Learn to recognize warning clues -
such as enough water, ice or packed snow on the road to
make a “mirrored surface”
- and slow down when you
have any doubt.
Remember: Any anti-lock braking system (ABS) helps
avoid only the braking skid. Steer the way
you want to go.
Driving at Night
Night driving is more dangerous than day driving. One
reason is that some drivers are likely
to be impaired -- by
alcohol or drugs, with night vision problems, or by
fatigue.
Here are some tips on night driving.
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Drive defensively. Remember, this is the most
dangerous time.
Don’t drink and drive, (See “Drunken Driving’’ in
the Index for more
on this problem.)
Adjust your inside rearview mirror to reduce the
glare from headlights behind you.
Since you can’t see as well,
you may need to slow
down and keep more space between you and other
vehicles. It’s hard to tell
how fast the vehicle ahead
is going just by looking at its taillights.
Slow down, especially on higher speed roads. Your
headlights 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.
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Night Vision
No one can see as well at night as in the daytime. But as
we get older these differences increase.
A SO-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 cut down on glare from headlights, but
they
also make a lot of things invisible that should remain
visible
- such as parked cars, obstacles, pedestrians, or
even trains blocking railway crossings. You may want to
put on your sunglasses after you have pulled into
a
brightly-lighted service or refreshment area. Eyes shielded from that glare may adjust more quickly to
darkness back on the road. But be sure to remove your sunglasses before you leave the service area.
You can be temporarily blinded by approaching lights. 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 headlights), slow down
a little. Avoid staring directly into the
approaching lights. If there is a line of opposing traffic,
make occasional glances over the line of headlights to
make certain that one of the vehicles isn’t starting to
move into your lane. Once you are past the bright lights,
give your eyes time to readjust before resuming speed.
High Beams
If the vehicle approaching you has its high beams on,
signal by flicking yours to high and then back
to low
beam. This is the usual signal to lower the headlight
beams. If the other driver still doesn’t lower the beams,
resist the temptation to put your high beams on. This only makes two half-blinded drivers.
On a freeway, use your high beams only in remote areas
where you won’t impair approaching drivers. In some
places, like cities, using high beams is illegal.
When you follow another vehicle on a freeway or
highway, use low beams. True, most vehicles now have day-night mirrors that enable the driver to reduce glare. But outside mirrors are not of this type and high beams
from behind can bother the driver ahead.
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A Few More Night Driving Suggestions
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. Tobacco smoke also
makes inside glass surfaces very filmy and can be a
vision hazard if it’s left there.
Dirty glass makes lights dazzle and flash more than
clean glass would, making the pupils
of your eyes
contract repeatedly. You might even want
to keep a cloth
and some glass cleaner in your vehicle if
you need to
clean your glass frequently.
Remember that your headlights 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 headlights 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.
Driving in the Rain
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Rain and wet roads can mean driving trouble. On a wet
road you can’t stop, accelerate or turn as well because
your tire-to-road traction isn’t as good
as on dry roads.
And, if your tires don’t have much tread left, you’ll get
even less traction.
It’s always wise to go slower and be cautious if rain
starts to fall while you are driving. The surface may get
wet suddenly when your reflexes are tuned for driving
on dry pavement.
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The heavier the rain, the harder it is to see. Even if your
windshield wiper blades are in good shape, a heavy rain
can make it harder
to see road signs and traffic signals,
pavement markings, the edge of the road, and even
people walking. Road spray can often be worse for
vision than rain, especially if it comes from a dirty road.
So it is wise to keep your wiping equipment in good
shape and keep your windshield washer tank filled.
Replace your windshield wiper inserts when they show
signs
of streaking or missing areas on the windshield, or
when strips of rubber start to separate from the inserts. Driving
too fast through large water puddles or even
going through some car washes can cause problems, too.
The water may affect your brakes. Try
to avoid puddles.
But if you can’t, try to slow down before you hit them.
A CAUTION:
Wet brakes can cause accidents. They won’t
work well in a quick stop and may cause pulling
to one side. You could lose control
of the vehicle.
After driving through a large puddle
of water or a
car wash, apply your brake pedal lightly until
your brakes work normally.
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Hydroplaning
Hydroplaning is dangerous. So much water can build up
under your tires that they can actually ride on the water.
This can happen
if the road is wet enough and you’re
going fast enough. When your vehicle is hydroplaning,
it has little or no contact with the road.
You might
not be aware of hydroplaning. You could
drive along for some time without realizing your tires
aren’t in constant contact with
the road. You could find
out the hard way: when you have to slow, turn, move out
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to pass -- or if you get hit by a gust of wind. You could
suddenly find yourself out of control.
Hydroplaning doesn’t happen often. But it can
ir your
tires haven’t much tread or if the pressure in one or
more is low.
It can happen if a lot of water is standing
on the road. If you can see reflections from trees,
telephone poles, or other vehicles, and raindrops
“dimple” the water’s surface, there could be
hydroplaning.
Hydroplaning usually happens at higher speeds. There
just isn’t a hard and fast rule about hydroplaning. The
best advice is to slow down.when it is raining, and be
careful.
Some Other Rainy Weather Tips
0 Turn on your headlights -- not just your parking
lights
-- to help make you more visible to others.
0 Look for hard-to-see vehicles coming from behind.
You may want to use your headlights even
in
daytime if it’s raining hard.
0 Besides slowing down, allow some extra following
distance. And be especially careful when you pass
another vehicle. Allow yourself more clear room
ahead, and be prepared to have your view restricted
bv road spray. If the road spray is so heavy you are actually blinded,
drop back. Don’t pass until
conditions improve. Going more slowly is better
than having an accident.
0 Use your defogger if it helps.
0 Have good tires with proper tread depth. (See
“Tires” in the Index.)
Driving in Fog, Mist and Haze

Fog can occur with high humidity or heavy frost. It can
be so mild that you can see through it for several
hundred feet (meters). Or it might be
so thick that you
can see only a few feet (meters) ahead. It may come
suddenly to an otherwise clear road. And it can be a
major hazard.
When
you drive into a fog patch, your visibility will be
reduced quickly. The biggest dangers are striking the
vehicle ahead or being struck by the one behind. Try to
“read” the fog density down the road. If the vehicle
ahead starts to become less clear or, at night, if the
taillights are harder to see, the fog is probably
thickening. Slow down to give traffic behind you a
chance to slow down. Everybody then has a better
chance to avoid hitting the vehicle ahead.
A patch of dense fog may extend only for a few feet
(meters) or for miles (kilometers); you can’t really tell
while you’re in
it. You can only treat the situation with
extreme care.
One common fog condition
-- sometimes called mist or
ground fog
-- can happen in weather that seems perfect,
especially at night or in the early morning in valley and
low, marshy areas. You can be suddenly enveloped in
thick, wet haze that may even coat your windshield.
You
can often spot these fog patches or mist layers with your
headlights. But sometimes they can be waiting for
you
as you come over a hill or dip into a shallow valley.
Start your windshield wipers and washer, to help clear
accumulated road dirt. Slow down carefully.
Tips on Driving in Fog
If you get caught in fog, turn your headlights on low
beam, even in daytime. You’ll see
-- and be seen --
better.
Don’t use your high beams. The light will bounce
off the
water droplets that make up fog and reflect back at you.
Use your defogger. In high humidity, even a light
buildup of moisture
on the inside of the glass will cut
down on your already limited visibility. Run your
windshield wipers and washer occasionally. Moisture
can build up on the outside glass, and what seems
to be
fog may actually be moisture on the outside of your
windshield.
Treat dense fog as an emergency. Try to find a place
to
pull off the road. Of course you want to respect
another’s property, but you might need to put something
between
you and moving vehicles -- space, trees,
telephone poles, a private driveway, anything that
removes you from other traffic.
If visibility is near zero and you must stop but are
unsure whether you are away from the road, turn your

lights on, start your hazard warning flashers, and sound
your horn at intervals or when you hear approaching
traffic.
Pass other vehicles in fog only if you can see far enough
ahead to pass safely. Even then, be prepared
to delay
your pass if you suspect the fog is worse up ahead. If
other vehicles try
to pass you, make it easy for them.
City Driving
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One of the biggest problems with city streets is the
amount
of traffic on them. You’ll want to watch out for
what the other drivers are doing and pay attention to
traffic signals.
Here are ways
to increase your safety in city driving:
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Know the best way to get to where you are going.
Try not to drive around trying to pick out a familiar
street or landmark. Get a city map and plan your trip
into an unknown part of the city just
as you would
for a cross-country trip.
Try
to use the freeways that rim and crisscross most
large cities. You’ll save time and energy. (See the
next section, “Freeway Driving.”)
Treat a green light as a warning signal.
A traffic light
is there because the corner is busy enough to need it.
When a light turns green, and just before you start to
move, check both ways for vehicles that have not
cleared
the intersection or may be running the red
light.
Obey all posted speed limits. But remember that they
are for ideal road, weather and visibility conditions.
You may need to drive below the posted limit in bad
weather or when visibility is especially poor.

Pull to the right (with care) and stop clear of
intersections
when you see or hear emergency
vehicles.
Freeway Driving
The most important advice on freeway driving is: Keep up
with traffic and keep to the right. Drive at the same
speed most
of the other drivers are driving. Too-fast or
too-slow driving breaks
a smooth traffic flow. Treat the
left lane on a freeway as a passing lane.
Mile for mile, freeways (also called thruways,
parkways, expressways, turnpikes, or superhighways)
are the safest
of all roads. But they have their own
special rules.
Entering the Freeway
At the entrance there is usually a ramp that leads to the
freeway. If you have a clear view of the freeway as you
drive along the entrance ramp, you should begin to
check traffic. Try
to determine where you expect to
blend with
the flow. If traffic is light, you may have no
problem. But if
it is heavy, find a gap as you move along
the entering lane and time your approach. Try
to merge
into the gap at
close to the prevailing speed. Switch on
your turn signal, check your rearview mirrors as you
move along, and glance over your shoulder as often as
necessary. Try
to blend smoothly with the traffic flow.
Driving on the Freeway
Once you are on the freeway, adjust your speed to the
posted limit or
to the prevailing rate if it’s slower. Stay
in the right lane unless you want to pass. If you are on a
two-lane freeway, treat the right lane as the slow lane
and the left lane as the passing lane.