brakes SATURN AURA 2010 Owners Manual

RES+ (Resume):Press to resume a set speed and to
accelerate the speed.
SET−(Set):Press to set a speed and to decrease the
speed.
To set a speed do the following:
1. Press
Ito turn cruise control on. The indicator
light on the button comes on.
2. Get up to the desired speed.
3. Press the SET−and release it. The cruise symbol
displays in the instrument panel cluster to show the
system is engaged.
4. Take your foot off the accelerator pedal.
When the brakes are applied, the cruise control
shuts off.
If the vehicle is in cruise control and the Traction
Control System (TCS) begins to limit wheel spin, the
cruise control automatically disengages. SeeTraction
Control System (TCS) on page 5-7. When road
conditions allow, the cruise control can be used again.
Resuming a Set Speed
If the cruise control is set at a desired speed and then
the brakes are applied, the cruise control is disengaged.
But it does not need to be reset. The cruise symbol in
the instrument panel cluster also goes out indicating
cruise is no longer engaged. Once the vehicle speed is
40 km/h (25 mph) or more, briefly press the RES+.
The vehicle returns to the previously set speed
and stays there.
Increasing Speed While Using Cruise
Control
There are two ways to increase the vehicle speed while
using cruise control:
•If the cruise control system is already engaged,
press and hold the RES+ button until the desired
speed is reached, then release it.
•To increase the vehicle speed in small amounts,
briefly press the RES+ and then release it. Each
time this is done, the vehicle goes about 1.6 km/h
(1 mph) faster.
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Reducing Speed While Using Cruise
Control
If the cruise control system is already engaged:
•Press and hold the SET−until the desired lower
speed is reached, then release it.
•To slow down in very small amounts, briefly push
the SET−. Each time this is done, the vehicle
goes about 1.6 km/h (1 mph) slower.
Passing Another Vehicle While Using
Cruise Control
Use the accelerator pedal to increase the vehicle’s
speed. When you take your foot off the pedal, the
vehicle slows down to the previously set cruise
control speed.
Using Cruise Control on Hills
How well the cruise control works on hills depends upon
the vehicle’s speed, load, and the steepness of the
hills. When going up steep hills, you might have to step
on the accelerator pedal to maintain the vehicle’s
speed. When going downhill, you might have to brake
or shift to a lower gear to keep the vehicle at a
lower speed. When the brakes are applied this ends the
cruise control.
Ending Cruise Control
There are two ways to disengage the cruise control:
•Step lightly on the brake pedal; when cruise control
disengages, the cruise symbol in the instrument
panel cluster goes out.
•Press theIbutton, to turn off the cruise control
system.
Erasing Speed Memory
The cruise control set speed memory is erased when
the cruise control or the ignition is turned off.
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WARNING: (Continued)
crash. If the light is still on after the vehicle has
been pulled off the road and carefully stopped,
have the vehicle towed for service.
This light comes on briefly when the ignition key is
turned to ON/RUN. If it does not, have the vehicle
serviced by your dealer/retailer. If the system is working
normally the indicator light will then go off.
When the ignition is on, the brake system warning light
also comes on when the parking brake is set. The
light stays on if the parking brake does not fully release.
If it stays on after the parking brake is fully released,
it means there is a brake problem.
The Driver Information Center (DIC) may display a
BRAKE FLUID message. SeeDIC Warnings and
Messages on page 4-42for more information.
If the light comes on while driving, pull off the road and
stop carefully. The pedal may be harder to push or it
may go closer to the floor. It may take longer to stop. Try
turning off and restarting the vehicle one or two times,
if the light is still on, have the vehicle towed for service.
SeeTowing Your Vehicle on page 5-24.
Antilock Brake System (ABS)
Warning Light
This light comes on briefly
while the starting the
engine.
If it does not, have the vehicle serviced by the
dealer/retailer. If the system is working normally the
indicator light will then go off.
If the ABS light stays on, turn the ignition off, if the light
comes on while driving, stop as soon as it is safely
possible and turn the ignition off. Then start the engine
again to reset the system. If the ABS light still stays
on, or comes on again while driving, the vehicle needs
service. If the regular brake system warning light is
not on, the vehicle still has brakes, but it does not have
antilock brakes. If the regular brake system warning
light is also on, the vehicle does not have antilock
brakes and there is a problem with the regular brakes.
SeeBrake System Warning Light on page 4-30.
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For persons under 21, it is against the law in every
U.S. state to drink alcohol. There are good medical,
psychological, and developmental reasons for
these laws.
The obvious way to eliminate the leading highway
safety problem is for people never to drink alcohol
and then drive.
Medical research shows that alcohol in a person’s
system can make crash injuries worse, especially
injuries to the brain, spinal cord, or heart. This means
that when anyone who has been drinking — driver
or passenger — is in a crash, that person’s chance of
being killed or permanently disabled is higher than if the
person had not been drinking.
Control of a Vehicle
The following three systems help to control the vehicle
while driving — brakes, steering, and accelerator.
At times, as when driving on snow or ice, it is easy to
ask more of those control systems than the tires
and road can provide. Meaning, you can lose control of
the vehicle. SeeTraction Control System (TCS) on
page 5-7andElectronic Stability Control (ESC)
on page 5-5.
Adding non-dealer/non-retailer accessories can affect
vehicle performance. SeeAccessories and Modications
on page 6-3.
Braking
SeeBrake System Warning Light on page 4-30.
Braking action involves perception time and reaction
time. Deciding to push the brake pedal is perception
time. Actually doing it is reaction time.
Average reaction time is about three-fourths of a
second. But that is 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 three-fourths of
a second, a vehicle moving at 100 km/h (60 mph) travels
20 m (66 feet). That could be a lot of distance in an
emergency, so keeping enough space between
the vehicle and others is important.
And, of course, actual stopping distances vary greatly
with the surface of the road, whether it is pavement
or gravel; the condition of the road, whether it is
wet, dry, or icy; tire tread; the condition of the brakes;
the weight of the vehicle; and the amount of brake force
applied.
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. The brakes might not have time to cool
between hard stops. The brakes will wear out much
faster with a lot of heavy braking. Keeping pace with the
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traffic and allowing realistic following distances
eliminates a lot of unnecessary braking. That means
better braking and longer brake life.
If the engine ever stops while the vehicle is being driven,
brake normally but do not pump the brakes. If the brakes
are pumped, the pedal could get harder to push down. If
the engine stops, there will still be some power brake
assist but it will be used when the brake is applied. 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
vehicle performance. SeeAccessories and Modications
on page 6-3.
Antilock Brake System (ABS)
This vehicle has the Antilock Brake System (ABS), an
advanced electronic braking system that helps prevent a
braking skid.
When the engine is started and the vehicle begins to
drive away, ABS checks itself. A momentary motor
or clicking noise might be heard while this test is going
on, and it might even be noticed that the brake pedal
moves a little. This is normal.If there is a problem with
ABS, this warning light
stays on. SeeAntilock
Brake System (ABS)
Warning Light on
page 4-31.
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 the 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 to each wheel, as
required, faster than any driver could. This can help
the driver steer around the obstacle while braking hard.
As the brakes are applied, the computer keeps
receiving updates on wheel speed and controls braking
pressure accordingly.
Remember: ABS does not change the time needed to get
a foot up to the brake pedal or always decrease stopping
distance. If you get too close to the vehicle in front of you,
there will not be enough time to apply the brakes if that
vehicle suddenly slows or stops. Always leave enough
room up ahead to stop, even with ABS.
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Using ABS
Do not pump the brakes. Just hold the brake pedal
down firmly and let antilock work. The antilock pump or
motor might be heard operating and the brake pedal
might be felt to pulsate, but this is normal.
Braking in Emergencies
ABS allows the driver to steer and brake at the same
time. In many emergencies, steering can help more than
even the very best braking.
Brake Assist
This vehicle has a Brake Assist feature designed to
assist the driver in stopping or decreasing vehicle speed
in emergency driving conditions. This feature uses the
stability system hydraulic brake control module to
supplement the power brake system under conditions
where the driver has quickly and forcefully applied
the brake pedal in an attempt to quickly stop or slow
down the vehicle. The stability system hydraulic
brake control module increases brake pressure at each
corner of the vehicle until the ABS activates. Minor
brake pedal pulsations or pedal movement during this
time is normal and the driver should continue to
apply the brake pedal as the driving situation dictates
The Brake Assist feature will automatically disengage
when the brake pedal is released or brake pedal
pressure is quickly decreased.
Electronic Stability Control (ESC)
The vehicle has an Electronic Stability Control (ESC)
system 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 first start the vehicle and begin to drive away,
the system performs several diagnostic checks to
ensure there are no problems. The system may be
heard or felt while it is working. This is normal and does
not mean there is a problem with the vehicle. The
system should initialize before the vehicle reaches
32 km/h (20 mph).
If the system fails to turn on or activate, the ESC/TCS
light will be on solid, and the ESC OFF or SERVICE
ESC message will be displayed.
For more information, seeDriver Information Center
(DIC) on page 4-39.
This light will flash on the
instrument panel cluster
when the ESC system
is both on and activated.
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Traction Control System (TCS)
The vehicle has 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 front wheels are spinning too much or are
beginning to lose traction. When this happens,
the system works the front brakes and reduces engine
power by closing the throttle and managing engine
spark to limit wheel spin.
This light will flash when
the traction control system
is limiting wheel spin.
The system may be heard or felt while it is working, but
this is normal.
If the vehicle is in cruise control when TCS begins to
limit wheel spin, the cruise control will automatically
disengage. The cruise control may be re-engaged when
road conditions allow. SeeCruise Control on page 4-7.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 4-42for more information.
The Traction Control System is automatically enabled
whenever the vehicle is started. To limit wheel spin,
especially in slippery road conditions, always leave the
system enabled. TCS can be turned off if needed.
It is recommended to leave the system on for normal
driving conditions, but it may be necessary to turn
the system off if the vehicle is stuck in sand, mud, ice or
snow, and you want to “rock” the vehicle to attempt to
free it. It may also be necessary to turn off 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 5-18.
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To turn the system off or
on, press and release this
button located on the
center console.
The DIC will display the appropriate message as
described previously when the button is pressed.
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 the vehicle is started, and it will activate and flash
the ESC/TCS light and display the LOW TRACTION
message if it senses either of the front wheels are
spinning or beginning to lose traction while driving. For
more information on the LOW TRACTION message,
seeDriver Information Center (DIC) on page 4-39.
Notice:If the wheel(s) of one axle are allowed to
spin excessively while the ESC/TCS, ABS and Brake
warning lights and the SERVICE ESC and/or
SERVICE TRACTION messages are displayed, thedifferential could be damaged. The repairs would
not be covered by the vehicle 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, it is
possible to lose traction. If you attempt to shift with
the front wheels spinning with a loss of traction,
it is possible to cause damage to the transmission.
Do not attempt to shift when the front 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, a reduction
in acceleration may be noticed, or a noise or vibration
may be heard. This is normal.
If the vehicle is in cruise control when the system
activates, the ESC/TCS light will flash and the cruise
control will automatically disengage. The cruise control
may be re-engaged when road conditions allow.
SeeCruise Control on page 4-7.
Adding non-dealer/non-retailer accessories can affect
the vehicle’s performance. SeeAccessories and
Modications on page 6-3for more information.
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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 find
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. These
problems can be avoided by braking — if you can stop
in time. But sometimes you cannot stop in time
because there is no room. That is the time for evasive
action — steering around the problem.
The vehicle can perform very well in emergencies like
these. First apply the brakes. SeeBraking on page 5-3.
It is better to remove as much speed as possible
from a 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 holding the steering wheel at the
recommended 9 and 3 o’clock positions, it can be turned
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.
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Off-Road Recovery
The 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 the vehicle straddles the edge of the
pavement. Turn the steering wheel 8 to 13 cm
(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.
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