brakes BUICK LESABRE 1993 Owners Manual

PARK RNO321
Automatic Transaxle
r
There are several different positions for your shift lever.
P (Park)
This locks your front wheels. It’s the best position to
use when you start your engine because your vehicle
can’t move easily.
A CAUTION: .
a -II
It is dangerous to get out of your vehicle If the
shift [ever is not fully in “P” (Park) with the
parking
brake firmly set. Your vehicle can roll.
Don’t leave your vehicle when ihe engine is
running unless you hsve to. If you have left the
engine
running, the vehicle can move suddenly.
You or others could be Injured. To be sure your
vehicle won’t move, when you’re on fairly level
ground, always set your parking brake and move
the shift lever to V“ (Park).
See “Shifting Into “P” (Park)” in the Index. If you
arb parkfng on a hill, or if you’re pulling a trailer,
also see“Parking on Hills” or “Towing a Trailer”
in’ the Index.
- i
Ensure the shift lever is fully in “F‘” (Park) range before
starting the engine. Your Buick has a brake-transaxle
shift interlock.
You have to fully apply your regular
brakes before
you can shift from “P” (Park) when the
ignition key is
in the “Run” position. If you cannot shift
out of “P” (Park), ease pressure on the shift lever - push
the shift lever all
the way into “P” (Park) as you
maintain brake application. Then move the shift lever
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- Going about 35 mph (56 km/h) or more, push the
accelerator all the way down.
You’ll shift down to the next gear and have more
power.
0 D or 3 (Third Gear)
This is like
@, but you never go into Overdrive.
Here are some times you might choose
“D or 3”
instead of @:
- When driving on hilly, winding roads
- When towing a trailer, so there is less shifting
between gears
- When going down a steep hill
0 2 (Second Gear)
This position gives you more power but lower fuel
economy.
You can use “2” on hills. It can help
control your speed as you go down steep mountain
roads, but then you would also want to use your
brakes off and on.
NOTICE:
Don’t drive in “2” (S
or you can damage your trans
“D or 3” as much as possible.
e 1 (First Gear)
This position gives you even more power (but lower
fuel economy) than
“2.” You can use it on very steep
hills,
or in deep snow or mud. If the selector lever is
put in “1,” the transaxle won’t shift into first gear
until the vehicle is going slowly enough.
75

NOTICE:
If your front wh
drive. This might happen
if you were stuck i
very deep sand or mud or were up agains
object. You could damage your transaxle.
Also, if you stop when going uphill, don't ho
your vehicle there with
only the accelerator
pedal. This could overheat and damage the
transaxle. Use your brakes or shift into
"P'' Park
to hold your vehicle
in position on a hill.
Parking Brake
The parking brake uses the brakes on the rear wheels.
To set the parking brake:
Hold the regular brake pedal down with your right foot.
Push down the parking brake pedal with your left foot.
If the ignition
is on, the brake system warning light will
come on.
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1
To release the parking brake:
Hold the regular brake pedal down. Pull the brake
release lever.
If you try to drive more than
50 feet with the parking
brake
on, the brake light stays on and a chime sounds
until you release the parking brake or recycle the
ignition.
NOTICE
Driving with t
I
rear brakes to overheat. You may have to replace
them,
and you could also damage other parts
If you are on a hill: See “Parking on Hills” in the Index.
That section shows how to turn your front wheels.
If you are towing a trailer and are parking on any hill:
See “Towing a Trailer” in the Index. That section shows
what
to do first to keep the trailer from moving.
77

NOTICE:
When using concentrated washer fluid
iollow the manufacturer instructions for
~ Idding water.
I 0 Don’t mix water with ready to use washe
fluid
. Water can cause the solution to
freeze and damage your washer fluid tank
and other parts of
t
water doesn’t clean as well as washer
0 Fill your washer fluid tank only 3/4 full
when it’s very cold. This
allows for
expansion, which c
it is completely full.
0 Don’t use radiator a
windshield washer. It c
paint.
I
Cruise Control (Option)
With Cruise Control, you can maintain a speed of about
25 mph (40 km/h) or more without keeping your foot on
~ the accelerator. This can really help on long trips. Cruise
Control
does not work at speeds below about 25 mph
(40 km/h).
When you apply your brakes, the Cruise Control shuts
off.

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. If the light and chime come on
while 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 “Towing Your Car” in the Index.)
1 &!A CAUTION:
Your brake system may not be working properly
if the brake warning light is on. Rriving with the
brake 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.
Anti-Lock Brake System Warning Light
1-
ANTI
LOCK
With anti-lock, this light will go on when you start your
engine and may stay on for several seconds or
so. That’s
normal. If the light doesn’t come on, have it fixed
so it
will be ready to warn you if there is a problem.
If the light stays on or comes
on when you’re driving,
stop as soon as possible and turn the key off. Then start
the engine
to reset the system. If the light still stays on,
or comes
on again while you’re driving, your Buick
needs service. Unless
the regular brake system warning
light is also
on, you will still have brakes, but not
anti-lock brakes. If the regular brake system warning
light
is also on, see “Brake System Warning Light”
earlier
in this part.
108

The anti-lock brake system warning light may also come Traction Control System Warning Light
on when you are driving with a compact spare tire. If (Option)
this happens, the light means you won’t have anti-lock
until you replace the compact spare with a full-size tire.
If the warning light stays on after you replace the
compact spare with a full-size tire, or
if it comes on
again when you’re driving, your Buick needs service.
TRACTION
OFF
The “TRACTION OFF”
warning light means that
the system is not working.
This warning light may
come on for the following
reasons:
0 If your transaxle overheats, the traction control
system automatically shuts
off for about three
minutes. The warning light will come on and stay on
during that time.
.
0 If your brakes overheat, the traction control system
will
go off and the warning light will come on until
your brakes cool down.
If the “TRACTION
OFF” warning light comes on and
stays on for an extended period
of time, your vehicle
needs service.
109

Control of a Vehicle
You have three systems that make your vehicle go where
you want it to go. They are the brakes, the steering and
the accelerator. All three systems have to do their work
at the places where the tires meet the road.
Braking
Braking action involves perception time and reaction
time.
First,
you have to decide to push on the brake pedal.
That’s perception time. Then you have to bring up your
foot and do it. That’s reaction time.
Sometimes, as when you’re driving on snow or ice, it’s
easy
to ask more of those control systems than the tires
and road can provide. That means you can lose control
of your vehicle. Average
reaction time is about
3/4 of a second. But
that’s
only an average. It might be less with one driver
and as long as two or three seconds or more with
another. Age, physical condition, alertness,
coordination, and eyesight all play a part.
So do alcohol,
drugs and frustration. But even in
3/4 of a second, a
vehicle moving at
60 mph (100 km/h) travels 66 feet (20
m). That could be a lot of distance in an emergency, so
keeping enough space between your vehicle and others
is important.
And,
of course, actual stopping distances vary greatly
with the surface
of the road (whether it’s pavement or
gravel); the condition of the road (wet, dry, icy); tire
tread; and the condition
of your brakes.
Most drivers treat their brakes with care. Some,
however, overwork the braking system with poor
driving habits.

0 Avoid needless heavy braking. Some people drive in
spurts
-- heavy acceleration followed by heavy
braking
-- rather than keeping pace with traffic. This
is a mistake. Your brakes may not have time to cool
between hard stops. Your brakes will wear
out much
faster
if you do a lot of heavy braking.
0 Don’t “ride” the brakes by letting your left foot rest
lightly
on the brake pedal while driving.
I A CAUTION: -’+
“Riding” your brakes can cause them to overheat
to the point that they won’t work well. You might
not be able to stop your vehicfe
in time to avoid
an accident. If you “ride’’ your brakes, they will
get so hot they will iequire a lot of pedal force to
slow you down. Avoid “riding” the brakes.
Riding” the brakes wears them
out much
I You would need costly brake replacement much
If you keep pace with the traffic and allow realistic
following distances,
you will eliminate a lot of
unnecessary braking. That means better braking and
longer brake life.
159

0 If your engine ever stops while you’re driving, brake
normally but don’t pump your brakes.
If you do, the
pedal may get harder to push down.
If your engine
stops, you will still have some power brake assist.
But
you will use it when you brake. Once the power assist
is used up, it may take longer to stop and the brake
pedal will be harder to push.
Anti-Lock Brakes (ABS)
Your Buick has an advanced electronic braking system
that will help prevent skidding.
This light
on the instrument panel will go on when you
start your vehicle.
See “Anti-lock Brake System Warning Light”
in the
Index.
@
ANTI
LOCK
‘1 ”. j ’ ;I
- -’ y- ..-
a,
rn
e,
Here’s how anti-lock works. Let’s say the road is wet.
You’re. driving safely. Suddenly an animal jumps
out in
front
of you.
You slam on the brakes. Here’s what happens with ABS.
A computer senses that wheels are slowing down. The
computer separately works the brakes at each front
wheel and at the rear wheels.
The anti-lock system can change the brake pressure
faster than any driver could. The computer
is
programmed to make the most of available tire and road
conditions.
160