SATURN AURA HYBRID 2007 Owners Manual

Page 211 of 406

Drunken Driving
Death and injury associated with drinking and
driving is a national tragedy. It is the number one
contributor to the highway death toll, claiming
thousands of victims every year.
Alcohol affects four things that anyone needs to
drive a vehicle:
Judgment
Muscular Coordination
Vision
Attentiveness
Police records show that almost half of all motor
vehicle-related deaths involve alcohol. In most
cases, these deaths are the result of someone who
was drinking and driving. In recent years, more
than 16,000 annual motor vehicle-related deaths
have been associated with the use of alcohol, with
more than 300,000 people injured.Many adults — by some estimates, nearly half the
adult population — choose never to drink
alcohol, so they never drive after drinking. 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. But what if people do?
How much is “too much” if someone plans
to drive? It is a lot less than many might think.
Although it depends on each person and situation,
here is some general information on the problem.
The Blood Alcohol Concentration (BAC) of
someone who is drinking depends upon four
things:
The amount of alcohol consumed
The drinker’s body weight
The amount of food that is consumed before
and during drinking
The length of time it has taken the drinker to
consume the alcohol
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Page 212 of 406

According to the American Medical Association, a
180 lb (82 kg) person who drinks three 12 ounce
(355 ml) bottles of beer in an hour will end up with
a BAC of about 0.06 percent. The person would
reach the same BAC by drinking three 4 ounce
(120 ml) glasses of wine or three mixed drinks if
each had 1-1/2 ounces (45 ml) of liquors like
whiskey, gin, or vodka.It is the amount of alcohol that counts. For
example, if the same person drank three double
martinis (3 ounces or 90 ml of liquor each)
within an hour, the person’s BAC would be close
to 0.12 percent. A person who consumes food
just before or during drinking will have a somewhat
lower BAC level.
There is a gender difference, too. Women
generally have a lower relative percentage of body
water than men. Since alcohol is carried in body
water, this means that a woman generally will
reach a higher BAC level than a man of her same
body weight will when each has the same
number of drinks.
The law in most U.S. states, and throughout
Canada, sets the legal limit at 0.08 percent. In
some other countries, the limit is even lower. For
example, it is 0.05 percent in both France and
Germany. The BAC limit for all commercial drivers
in the United States is 0.04 percent.
The BAC will be over 0.10 percent after three to
six drinks (in one hour). Of course, as we have
seen, it depends on how much alcohol is in the
drinks, and how quickly the person drinks them.
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Page 213 of 406

But the ability to drive is affected well below a
BAC of 0.10 percent. Research shows that
the driving skills of many people are impaired at a
BAC approaching 0.05 percent, and that the
effects are worse at night. All drivers are impaired
at BAC levels above 0.05 percent. Statistics
show that the chance of being in a collision
increases sharply for drivers who have a BAC of
0.05 percent or above. A driver with a BAC level of
0.06 percent has doubled his or her chance of
having a collision. At a BAC level of 0.10 percent,
the chance of this driver having a collision is
12 times greater; at a level of 0.15 percent, the
chance is 25 times greater!
The body takes about an hour to rid itself of the
alcohol in one drink. No amount of coffee or number
of cold showers will speed that up. “I will be careful”
is not the right answer. What if there is an
emergency, a need to take sudden action, as when
a child darts into the street? A person with even a
moderate BAC might not be able to react quickly
enough to avoid the collision.There is something else about drinking and driving
that many people do not know. 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.
{CAUTION:
Drinking and then driving is very
dangerous. Your reexes, perceptions,
attentiveness, and judgment can be
affected by even a small amount of alcohol.
You can have a serious — or even
fatal — collision if you drive after drinking.
Please do not drink and drive or ride with a
driver who has been drinking. Ride home in
a cab; or if you are with a group, designate
a driver who will not drink.
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Page 214 of 406

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.
Sometimes, as when you are driving on snow or
ice, it is easy to ask more of those control systems
than the tires and road can provide. That means
you can lose control of your vehicle. SeeTraction
Control System (TCS) on page 217and
Electronic Stability Control on page 219.
Adding non-Saturn accessories can affect your
vehicle’s performance. SeeAccessories and
Modications on page 253.
Braking
SeeBrake System Warning Light on page 168.
Braking action involves perception time and
reaction time.
First, you have to decide to push on the brake
pedal. That is perception time. Then you have to
bring up your foot and do it. That 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
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 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.
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Page 215 of 406

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 may not have
time to cool between hard stops. The 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 vehicle’s engine ever stops while you are
driving, brake normally but do not pump the
brakes. If you do, the pedal may 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 may take longer to stop and the brake pedal
will be harder to push.
Adding non-Saturn accessories can affect your
vehicle’s performance. SeeAccessories and
Modications on page 253.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 Warning Light
on page 169.
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Page 216 of 406

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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Page 217 of 406

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.
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 one or
both of the front wheels are spinning or beginning
to lose traction. When this happens, the system
reduces engine power and may also upshift
the transmission to limit wheel spin. You may feel
or hear the system working, but this is normal.
Also, the traction control system activates
the appropriate corner brakes to gain even quicker
control to limit wheel spin. The LOW TRACTION
message will appear on the Driver Information
Center (DIC) when the traction control system is
limiting wheel spin.
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.
SeeCruise Control on page 145.
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Page 218 of 406

The TCS operates in all transmission shift lever
positions except PARK (P), NEUTRAL (N) or
REVERSE (R). But the system can upshift
the transmission only as high as the shift lever
position you’ve chosen, so you should use
the lower gears only when necessary. See
Automatic Transaxle Operation on page 116.
This light is located on
the instrument panel
cluster.
When the system is on, this warning light will
come on to let you know if there’s a problem, or if
the system has been turned off. When this light
is on, the system will not limit wheel spin.
Adjust your driving accordingly.
To limit wheel spin, especially in slippery road
conditions, you should always leave the TCS on.
But you can turn the system off if you prefer.To turn the system on or off, press the traction
control button (TC) located on the center console.
In order to effectively “rock” the vehicle, you
will need to turn off TCS.
If you press the TC button once, the TCS will turn
off, the TRACTION OFF message will display and
the TCS warning light will come on. The
StabiliTrak
®system will stay on. Press the TC
button again to turn the system back on. The TCS
warning light will go off. If you press and hold the
TC button, the StabiliTrak
®system and the traction
control system will turn off. Press the TC button
again to turn StabiliTrak
®and the traction control
system back on. For more information, see
Electronic Stability Control on page 219.
When you turn the system off, the TCS warning
light will come on and stay on. If the Traction
Control System is limiting wheel spin when you
press the button to turn the system off, the warning
light will come on – but the system won’t turn off
right away. It will wait until there’s no longer a
current need to limit wheel spin.
Adding non-dealer/non-retailer accessories can
affect your vehicle’s performance. SeeAccessories
and Modications on page 253for more
information.
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Page 219 of 406

Electronic Stability Control
Your vehicle may have 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 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). In
some cases, it may take approximately two
miles of driving before the system initializes.
The ESC light is located
on the instrument panel
cluster.If the system fails to turn on or activate, the ESC
light will be on solid, and the ESC OFF or
SERVICE ESC message will be displayed in the
DIC. If the vehicle has gone through heavy
acceleration or braking during the rst two miles
after starting your vehicle, these messages and the
ESC light may also appear. If this is the case,
your vehicle does not need servicing. Turn your
vehicle off and back on again to reset the system.
If the SERVICE ESC message appears on the
Driver Information Center (DIC), and your vehicle
hasn’t gone through hard acceleration or
braking in the rst two miles, your vehicle should
be taken in for service.
When the ESC off light is on and either the
SERVICE ESC or ESC OFF message is displayed,
the system will not assist the driver to maintain
directional control of the vehicle. Adjust your
driving accordingly. SeeDIC Warnings and
Messages on page 182
The traction control part of ESC can be turned off
or back on by pressing the ESC button. To
disable both traction control and ESC, press and
hold the button briey.
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Page 220 of 406

When the system is turned off, the TRACTION
OFF message will rst appear followed by the ESC
OFF message. The ESC OFF and TCS OFF
indicator lights will also appear to warn the driver
that both traction control and ESC are disabled.
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 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 241.
ESC may also turn off automatically if it determines
that a problem exists with the system. The ESC
OFF and SERVICE ESC messages and the
ESC OFF light will be on solid to warn the driver
that ESC is disabled and requires service. If
the problem does not clear itself after restarting
the vehicle, you should see your retailer for
service. SeeDIC Warnings and Messages on
page 182.
Adding non-dealer/non-retailer accessories can
affect your vehicle’s performance. SeeAccessories
and Modications on page 253.Traction Control Operation
The traction control system is part of the ESC
system. 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 display the LOW TRACTION
message if it senses that any of the wheels are
spinning or beginning to lose traction while driving.
If you turn off traction control, the TCS OFF
warning light will come on and the TRACTION
OFF message will be displayed The ESC system
will remain operational unless it is turned off.
For more information on the traction active
message, seeDriver Information Center (DIC) on
page 179.
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