brake SATURN ASTRA 2008 Owner's Manual

If your vehicle’s engine ever stops
while you are driving, brake normally
but do not pump the brakes. If you
do, the pedal could get harder to
push down. If the 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 can take longer to stop and the
brake pedal will be harder to push.
Adding non-dealer/non-retailer
accessories can affect your vehicle’s
performance. SeeAccessories
and Modifications on page 9-3.Antilock Brake
System (ABS)
Your vehicle has the Antilock
Brake System (ABS), an advanced
electronic braking system that
will help prevent a braking skid.
When you start the engine and
begin to drive away, ABS will check
itself. You might hear a momentary
motor or clicking noise while this
test is going on, and you might even
notice that the brake pedal moves a
little. This is normal.
If there is a problem with ABS,
this warning light will stay on.
SeeAntilock Brake System (ABS)
Warning Light on page 4-18.Let us say the road is wet and you
are driving safely. Suddenly, an
animal jumps out in front of you.
You slam on the brakes and
continue braking. Here is what
happens with ABS:
A computer senses that wheels
are slowing down. If one of
the wheels is about to stop rolling,
the computer will separately
work the brakes at each wheel.
ABS can change the brake
pressure faster than any driver could.
The computer is programmed to
make the most of available tire and
road conditions. This can help you
steer around the obstacle while
braking hard.
As you brake, the computer keeps
receiving updates on wheel speed
and controls braking pressure
accordingly.
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Remember: ABS does not change
the time you need to get your foot
up to the brake pedal or always
decrease stopping distance. If you
get too close to the vehicle in front of
you, you will not have time to apply
the brakes if that vehicle suddenly
slows or stops. Always leave enough
room up ahead to stop, even though
you have ABS.
Using ABS
Do not pump the brakes. Just hold
the brake pedal down rmly and
let antilock work for you. You might
hear the antilock pump or motor
operate, and feel the brake
pedal pulsate, but this is normal.
Braking in Emergencies
With ABS, you can steer and
brake at the same time. In many
emergencies, steering can help
you more than even the very best
braking.
StabiliTrak®System
Your vehicle may have StabiliTrak
which combines antilock brake,
traction and stability control systems
and helps the driver maintain
directional control of the vehicle
in most driving conditions.
When you rst start your vehicle and
begin to drive away, the system
performs several diagnostic checks
to ensure there are no problems.
You may hear or feel the system
working. This is normal and does not
mean there is a problem with your
vehicle. The system should initialize
before the vehicle reaches 20 mph
(32 km/h).
The system monitors vehicle
movements, and helps the driver
maintain control of the vehicle in
most driving situations. When the
vehicle’s stability is affected the
engine output is reduced, and the
brakes are applied to individual
wheels.When you turn the ignition on,
this light on the instrument panel
cluster will come on for a few
seconds, then go out when the
system is ready.
You may also feel or hear the
system working; this is normal.
StabiliTrak is automatically enabled
whenever you start your vehicle.
To assist the driver with vehicle
directional control, especially in
slippery road conditions, you should
always leave the system on. But, you
can turn it off if you ever need to.
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Steering Tips
It is important to take curves at a
reasonable speed.
A lot of the “driver lost control”
accidents mentioned on the news
happen on curves. Here is why:
Experienced driver or beginner,
each of us is subject to the same
laws of physics when driving on
curves. The traction of the tires
against the road surface makes it
possible for the vehicle to change its
path when you turn the front wheels.
If there is no traction, inertia will
keep the vehicle going in the same
direction. If you have ever tried to
steer a vehicle on wet ice, you will
understand this.
Traction in a curve depends on
the condition of the tires and
the road surface, the angle at which
the curve is banked, and your
speed. While in a curve, speed is
the one factor you can control.Suppose you are steering
through a sharp curve. Then
you suddenly accelerate. Both
control systems — steering
and acceleration — have to do
their work where the tires meet
the road. Adding the sudden
acceleration can demand too much
of those places. You can lose
control. SeeStabiliTrak
®System
on page 8-19.
What should you do if this ever
happens? Ease up on the brake
or accelerator pedal, steer the
vehicle the way you want it to go,
and slow down.
Speed limit signs near curves warn
that you should adjust your speed.
Of course, the posted speeds are
based on good weather and road
conditions. Under less favorable
conditions you will want to go slower.If you need to reduce speed when
approaching a curve, do it before
you enter the curve, while the front
wheels are straight ahead.
Try to adjust the speed so you can
drive through the curve. Maintain
a reasonable, steady speed. Wait
to accelerate until you are out of the
curve, and then accelerate gently
into the straightaway.
Adding non-dealer/non-retailer
accessories can affect your vehicle’s
performance. SeeAccessories
and Modifications on page 9-3.
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Steering in Emergencies
There are times when steering can
be more effective than braking. For
example, you come over a hill and
nd a truck stopped in your lane, or a
car suddenly pulls out from nowhere,
or a child darts out from between
parked cars and stops right in front of
you. You can avoid these problems
by braking — if you can stop in time.
But sometimes you cannot; there is
not room. That is the time for evasive
action — steering around the
problem.
Your vehicle can perform very well
in emergencies like these. First
apply the brakes. SeeBraking on
page 8-17. It is better to remove
as much speed as you can from a
possible collision. Then steer around
the problem, to the left or right
depending on the space available.An emergency like this requires
close attention and a quick decision.
If you are holding the steering wheel
at the recommended 9 and 3 o’clock
positions, you can turn it a full
180 degrees very quickly without
removing either hand. But you have
to act fast, steer quickly, and just as
quickly straighten the wheel once
you have avoided the object.
The fact that such emergency
situations are always possible is a
good reason to practice defensive
driving at all times and wear
safety belts properly.
Off-Road Recovery
Your vehicle’s right wheels can drop
off the edge of a road onto the
shoulder while 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.
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Turn the steering wheel 3 to
5 inches (about one-eighth turn)
until the right front tire contacts the
pavement edge. Then turn the
steering wheel to go straight down
the roadway.
Passing
Passing another vehicle on a
two-lane road can be dangerous.
To reduce the risk of danger
while passing:
Look down the road, to the sides,
and to crossroads for situations
that might affect a successful
pass. If in doubt, wait.
Watch for traffic signs, pavement
markings, and lines that could
indicate a turn or an intersection.
Never cross a solid or
double-solid line on your
side of the lane.
Do not get too close to the vehicle
you want to pass. Doing so can
reduce your visibility.
Wait your turn to pass a slow
vehicle.
When you are being passed, ease
to the right.
Loss of Control
Let us review what driving experts
say about what happens when
the three control systems — brakes,
steering, and acceleration — do
not have enough friction where the
tires meet the road to do what
the driver has asked.
In any emergency, do not 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 overdriving those conditions.
But skids are always possible.
The three types of skids correspond
to your vehicle’s three control
systems. In the braking skid, the
wheels are not 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 is best handled
by easing your foot off of the
accelerator pedal.
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If your vehicle starts to slide, ease
your foot off the accelerator pedal
and quickly steer the way you want
the vehicle to go. If you start steering
quickly enough, your vehicle may
straighten out. Always be ready for a
second skid if it occurs.
Of course, traction is reduced when
water, snow, ice, gravel, or other
material is on the road. For safety,
you want to slow down and
adjust your driving to these
conditions. It is important to slow
down on slippery surfaces because
stopping distance is 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 reducing
vehicle speed by shifting to a lower
gear. Any sudden changes could
cause the tires to slide. You
might not realize the surface isslippery until your 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 Antilock Brake
System (ABS) helps avoid only the
braking skid.
Driving at Night
Night driving is more dangerous
than day driving because some
drivers are likely to be impaired — by
alcohol or drugs, with night vision
problems, or by fatigue.
Night driving tips include:
Drive defensively.
Do not drink and drive.
Reduce headlamp glare by
adjusting the inside rearview
mirror.
Slow down and keep more space
between you and other vehicles
because headlamps can only
light up so much road ahead.
Watch for animals.
When tired, pull off the road.
Do not wear sunglasses.
Avoid staring directly into
approaching headlamps.
Keep the windshield and all glass
on your vehicle clean — inside
and out.
Keep your eyes moving,
especially during turns or curves.
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 might need
at least twice as much light to see
the same thing at night as a
20-year-old.
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Driving in Rain and on
Wet Roads
Rain and wet roads can reduce
vehicle traction and affect your
ability to stop and accelerate.
Always drive slower in these types
of driving conditions and avoid
driving through large puddles and
deep-standing or owing water.
{CAUTION
Wet brakes can cause crashes.
They might not work as well in
a quick stop and could cause
pulling to one side. You could
lose control of the vehicle.
After driving through a large
puddle of water or a car/vehicle
wash, lightly apply the brake
pedal until the brakes work
normally.
(Continued)
CAUTION (Continued)
Flowing or rushing water
creates strong forces. Driving
through owing water could
cause your vehicle to be
carried away. If this happens,
you and other vehicle
occupants could drown. Do not
ignore police warnings and be
very cautious about trying to
drive through owing water.
Hydroplaning
Hydroplaning is dangerous. Water
can build up under your vehicle’s
tires so they actually ride on the
water. This can happen if the road is
wet enough and you are going fast
enough. When your vehicle is
hydroplaning, it has little or no
contact with the road.There is no hard and fast rule about
hydroplaning. The best advice is
to slow down when the road is wet.
Other Rainy Weather Tips
Besides slowing down, other wet
weather driving tips include:
Allow extra following distance.
Pass with caution.
Keep windshield wiping
equipment in good shape.
Keep the windshield washer uid
reservoir lled.
Have good tires with proper tread
depth. SeeTires on page 9-38.
Turn off cruise control, if
equipped.
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Before Leaving on a
Long Trip
To prepare your vehicle for a long
trip, consider having it serviced by
your dealer/retailer before departing.
Things to check on your own
include:
Windshield Washer Fluid:
Reservoir full? Windows
clean — inside and outside?
Wiper Blades:In good shape?
Fuel, Engine Oil, Other Fluids:All
levels checked?
Lamps:Do they all work and are
lenses clean?
Tires:Are treads good? Are tires
inated to recommended
pressure?
Weather and Maps:Safe to
travel? Have up-to-date maps?
Highway Hypnosis
Always be alert and pay attention
to your surroundings while driving.
If you become tired or sleepy, nd
a safe place to park your vehicle
and rest.
Other driving tips include:
Keep the vehicle well ventilated.
Keep interior temperature cool.
Keep your eyes moving — scan
the road ahead and to the sides.
Check the rearview mirror and
vehicle instruments often.
Hill and Mountain Roads
Driving on steep hills or through
mountains is different than driving
on at or rolling terrain. Tips for
driving in these conditions include:
Keep the vehicle serviced
and in good shape.
Check all uid levels and brakes,
tires, cooling system, and
transmission.
Going down steep or long hills,
shift to a lower gear.
{CAUTION
If you do not shift down, the
brakes could get so hot that
they would not work well. You
would then have poor braking
or even none going down a hill.
You could crash. Shift down to
let the engine assist the brakes
on a steep downhill slope.
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{CAUTION
Coasting downhill in N (Neutral)
or with the ignition off is
dangerous. The brakes will
have to do all the work of
slowing down and they could
get so hot that they would not
work well. You would then have
poor braking or even none
going down a hill. You could
crash. Always have the engine
running and the vehicle in gear
when going downhill.
Stay in your own lane. Do not
swing wide or cut across the
center of the road. Drive at
speeds that let you stay in your
own lane.
Top of hills: Be alert — something
could be in your lane (stalled car,
accident).
Pay attention to special road
signs (falling rocks area, winding
roads, long grades, passing or
no-passing zones) and take
appropriate action.
Winter Driving
Here are some tips for winter
driving:
Have your vehicle in good shape
for winter.
You might want to put winter
emergency supplies in your
vehicle.
Include an ice scraper, a small
brush or broom, a supply of
windshield washer uid, a rag, some
winter outer clothing, a small shovel,
a ashlight, a red cloth, and reective
warning triangles. And, if you will be
driving under severe conditions,
include a small bag of sand, a pieceof old carpet, or a couple of burlap
bags to help provide traction. Be sure
you properly secure these items in
your vehicle.
Also seeTires on page 9-38.
Driving on Snow or Ice
Most of the time, those places
where the tires meet the road
probably have good traction.
However, if there is snow or ice
between the tires and the road, you
can have a very slippery situation.
You have a lot less traction, or grip,
and need to be very careful.
What is the worst time for this? Wet
ice. Very cold snow or ice can be
slick and hard to drive on. But wet ice
can be even more trouble because it
can offer the least traction of all.
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You can get wet ice when it is about
freezing, 32°F (0°C), and freezing
rain begins to fall. Try to avoid driving
on wet ice until salt and sand crews
can get there.
Whatever the condition — smooth
ice, packed, blowing, or loose
snow — drive with caution.
Accelerate gently. Try not to
break the fragile traction. If you
accelerate too fast, the drive wheels
will spin and polish the surface
under the tires even more.
The Antilock Brake System (ABS)
improves your vehicle’s stability
when you make a hard stop
on a slippery road. Even though you
have ABS, begin stopping soonerthan you would on dry pavement.
SeeAntilock Brake System
(ABS) on page 8-18.
Allow greater following distance
on any slippery road.
Watch for slippery spots. The
road might be ne until you hit
a spot that is covered with ice.
On an otherwise clear road, ice
patches can appear in shaded
areas where the sun cannot
reach, such as around clumps of
trees, behind buildings, or under
bridges. Sometimes the surface
of a curve or an overpass can
remain icy when the surrounding
roads are clear. If you see a patch
of ice ahead of you, brake before
you are on it. Try not to brake
while you are actually on the ice,
and avoid sudden steering
maneuvers.
If You Are Caught in a Blizzard
If you are stopped by heavy
snow, you could be in a serious
situation. You should probably
stay with your vehicle unless you
know for sure that you are near
help and you can hike through the
snow. Here are some things to do
to summon help and keep yourself
and your passengers safe:
Turn on the hazard warning
ashers.
Tie a red cloth to your vehicle to
alert police that you have been
stopped by the snow.
Put on extra clothing or wrap a
blanket around you. If you do not
have blankets or extra clothing,
make body insulators from
newspapers, burlap bags, rags,
oor mats — anything you can
wrap around yourself or tuck
under your clothing to keep warm.
You can run the engine to keep
warm, but be careful.
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