SATURN SKY 2008 Owners Manual
Manufacturer: SATURN, Model Year: 2008, Model line: SKY, Model: SATURN SKY 2008Pages: 342, PDF Size: 5.53 MB
Page 171 of 342

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.
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 Electronic Stability Control (ESC) and Antilock
Brake System (ABS), you can steer and brake at the
same time. In many emergencies, steering can help you
more than even the very best braking.
Brake Assist
Your vehicle has ESC with ABS. It also has a brake
assist feature that responds to emergency braking
by generating additional pressure and engaging the
ABS. When this happens, the brake pedal will feel easier
to push. Just hold the brake pedal down rmly and let
the system work for you. You might feel the brakes
vibrate or notice some noise, but this is normal.
The brakes will return to normal operation after the
brake pedal is released.
Brake assist cannot compensate for unsafe driving
practices and braking effectiveness, itself, depends on
the condition of the road, tires, and brakes and
vehicle mass.
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Page 172 of 342

Traction Control System (TCS)
Your vehicle may have a Traction Control System (TCS)
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 too much
or are beginning to lose traction. When this happens,
the system works the rear brakes and reduces
engine power by closing the throttle and managing
engine spark to limit wheel spin.
If your vehicle has TCS, there is a ESC/TCS button
located on the instrument panel.
This light will ash when
your traction control
system is limiting
wheel spin.
You may feel or hear the system working, but this is
normal.
SeeElectronic Stability Control (ESC)/Traction Control
System (TCS) Indicator/Warning Light on page 3-29
for more information.If your vehicle is in cruise control when TCS 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.
SeeTurn Signal/Multifunction Lever on page 3-7.
When this light is on solid
and either the SERVICE
TRACTION or TRACTION
OFF message is
displayed, the system will
not limit wheel spin.
Adjust your driving accordingly. SeeDIC Warnings and
Messages on page 3-41for more information.
The Traction Control System is automatically enabled
whenever you start your vehicle. To limit wheel spin,
especially in slippery road conditions, you should always
leave the system enabled. You can turn TCS off if
you ever need to.
It is recommended to leave the system on for normal
driving conditions, but it may be necessary to turn
the system off if your vehicle is stuck in sand, mud,
ice or snow, and you want to “rock” your vehicle to
attempt to free it. It may also be necessary to turn off
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the system when driving in extreme off-road conditions
where high wheel spin is required. SeeIf Your Vehicle
is Stuck in Sand, Mud, Ice, or Snow on page 4-22.
To turn the system off or
on, press and release the
ESC/TCS button located
on the instrument panel.
The DIC will display the appropriate message as
described previously when you press the button.
Traction Control Operation
Traction control limits wheel spin by reducing engine
power to the wheels (engine speed management)
and by applying brakes to each individual wheel
(brake-traction control) as necessary.
The traction control system is enabled automatically
when you start your vehicle, and it will activate and ash
the ESC/TCS light and display the LOW TRACTION
message if it senses that any of the wheels are spinning
or beginning to lose traction while driving. For more
information on the LOW TRACTION message,
seeDriver Information Center (DIC) on page 3-38.Notice:If you allow the wheel(s) of one axle to spin
excessively while the ESC/TCS, ABS and Brake
warning lights and the SERVICE ESC and/or
SERVICE TRACTION messages are displayed, you
could damage the differential. The repairs would not
be covered by your warranty. Reduce engine
power and do not spin the wheel(s) excessively
while these lights and this message are displayed.
Notice:When traction control is turned off, or
Competitive Driving Mode is active, it is possible to
lose traction. If you attempt to shift with the rear
wheels spinning with a loss of traction, it is possible
to cause damage to the transmission. Do not
attempt to shift when the rear wheels do not have
traction. Damage caused by misuse of the vehicle is
not covered. See your warranty book for additional
information.
The traction control system may activate on dry or
rough roads or under conditions such as heavy
acceleration while turning or abrupt upshifts/downshifts
of the transmission. When this happens, you may
notice a reduction in acceleration, or may hear a noise
or vibration. This is normal.
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