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$RAKING
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.
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.
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. 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.
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.
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Anti-Lock Brakes (ABS)
Your Cadillac 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.
When you start your vehicle and begin to drive away, you may hear a
momentary motor or clicking noise. And you may even notice that your
brake pedal moves a little while this
is going on. This is the ABS system
testing itself.
If there’s a problem with the anti-lock brake system, the
anti-lock brake system warning light will stay on.
See “Anti-lock Brake System Warning Light’’ in the Index.
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.
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You slam on the brakes. Here's 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 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.
You can steer around the obstacle while braking hard.
As you brake, your computer keeps receiving updates on wheel speed and
controls braking pressure accordingly.
Remember: Anti-lock doesn't change the time you need to get your foot
up to the brake pedal. If you get too close to the vehicle in front of you,
you won't have time to apply your brakes if that vehicle suddenly slows or
stops. Always leave enough room up ahead to stop, even though you have
anti-lock brakes.
To Use Anti-Lock
Don't pump the brakes. Just hold the brake pedal down and let anti-lock
work for
you. You may hear the anti-lock pump or motor operate, and
feel the brake pedal pulsate, but this
is normal.
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Traction Control System
This feature is deleted on Coach Builder limousines and funeral coach
packages.
Your vehicle has a traction control system that limits wheel spin. This is
especially useful in slippery road conditions.
The system operates only if
it senses that the rear wheels are spinning or beginning to lose traction.
When this happens, the system works the rear brakes and reduces engine
power (by closing the throttle) to limit wheel spin.
The ‘TRACTION ENGAGED’’ light will come on when the traction
control system is limiting wheel spin. See “Traction Control System Active
Light” in the Index. You may feel the system working, or you may notice
some noise, but this is normal.
If your vehicle is in cruise control when the traction control system begins
to limit wheel spin, the cruise control will automatically disengage. When
road conditions allow you to safely use it again, you may re-engage the
cruise control,. (See “Cruise Control” in the Index.)
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The “TRACTION CONTROL? warning light will come on when you turn
the traction control system off. When the system is on, this light will come
on to let you know if there’s a problem with your traction control system.
‘When this warning light is on, the system
will not limit wheel spin. Adjust
your driving accordingly.
The traction control system automatically comes on whenever you start
your vehicle. To limit wheel spin, especially in slippery road conditions,
you should always leave the system on. But you can turn
the traction
control system
off if you ever need to. (You should turn the system off if
your vehicle ever gets stuck in sand, mud, ice or snow. See “Rocking Your
Vehicle’’
in the Index.)
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.
n The TRACTION CONTROL
DISABLE SWITCH
is located
in the glove
compartment.
I
To turn the system off, press and hold the button until the “TRACTION
CONTROC’ light comes
on and stays on. To turn the system back on, you
must stop and turn off the ignition. Then restart the engine.
Brake Wear
Your Cadillac has front disc brakes and rear drum brakes.
Disc brake pads have built-in wear indicators that make a high-pitched
warning sound when the brake pads are worn and new pads are needed.
The
sound may come and go or be heard all the time your vehicle is
moving (except when you are pushing on the brake pedal firmly).
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I
I NOTICE:
Continuing to drive with worn-out brake pads coula result in
I
costly brake repair.
Some driving conditions or climates may cause a brake squeal when the
brakes are first applied or lightly applied. This does not mean something
is wrong with your brakes.
Your rear drum brakes don't have wear indicators, but if you ever hear a
rear brake rubbing noise, have the rear brake linings inspected.
Also, the
rear brake drums should be removed and inspected each time the tires
are removed for rotation or changing. When you have the front brakes
replaced, have the rear brakes inspected, too.
Brake linings should always be replaced as complete axle sets.
Brake Pedal Travel
See your dealer if the brake pedal does not return to normal height, or
if there is a rapid increase in pedal travel. This could be a sign of brake
trouble.
I
I
Brake Adjustment
Every time you make a moderate brake stop, your disc brakes adjust for
wear.
If you rarely make a moderate or heavier stop, then your brakes
might not adjust correctly.
If you drive in that way, then -- very carefully --
make a few moderate brake stops about every 1000 miles (1600 km), so
your brakes will adjust properly.
Every time you make a brake stop, your disc brakes adjust for wear.
If your brake pedal goes down farther than normal, your rear drum
brakes may need adjustment. Adjust them by backing up and firmly
applying the brakes a
few times.
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Braking in Emergencies
Use your anti-lock braking system when you need to. With anti-lock, you
can steer and brake at the same time. In many emergencies, steering can
help you more than even the very best braking.
STEEHNG
Power Steering
If you lose power steering assist because the engine stops or the system is
not functioning, you can steer but it
will take much more effort.
Steering Tips
Driving on Curves
It’s important to take curves at a reasonable speed.
A lot of the “driver lost control’’ accidents mentioned on the news
happen on curves. Here’s 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’s no traction, inertia will keep the vehicle going
in the same direction. If you’ve ever tried to steer a vehicle on wet ice,
you’ll understand this.
The traction you can get in a curve depends on the condition of your tires
and the road surface, the angle at which the curve is banked, and your
speed. While you’re in a curve, speed is the one factor you can control.
Suppose you’re 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.
Suppose you’re 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. Unless your traction control
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