2011 CHEVROLET VOLT traction control

Black plate (1,1)Chevrolet Volt Owner Manual - 2011
Driving and Operating 9-1
Driving and
Operating
Driving Information
Driving for Better EnergyEfficiency . . . . . . . . . . . . . . . . . . . . 9-2
Defensive Driving . . . . . . . . . . . . . 9-4
Drunk Driving . . . . . . . . . . . . . . . . . 9-4
Control of a Vehicle . . . . . . . . . . . 9-5
Braking . . . . . . . . . . . . . . . . . . . . . . . 9-5
Steering . . . . . . . . . . . . . . . . . . . . . . . 9-6
Off-Road Recovery . . . . . . . . . . . . 9-8
Loss of Control . . . . . . . . . . . . . . . . 9-8
Driving on Wet Roads . . . . . . . . . 9-9
Highway Hypnosis . . . . . . . . . . . 9-10
Hill and Mountain Roads . . . . . 9-10
Winter Driving . . . . . . . . . . . . . . . . 9-11
If the Vehicle Is Stuck . . . . . . . . 9-13
Vehicle Load Limits . . . . . . . . . . 9-14
Starting and Operating
New Vehicle Break-In . . . . . . . . 9-18
Power Button . . . . . . . . . . . . . . . . 9-18
Starting and Stopping the Vehicle . . . . . . . . . . . . . . . . . . . . . 9-20
Retained Accessory Power (RAP) . . . . . . . . . . . . . . . 9-22 Shifting Into Park . . . . . . . . . . . . 9-22
Shifting out of Park . . . . . . . . . . 9-23
Parking over Things
That Burn . . . . . . . . . . . . . . . . . . 9-24
Electric Vehicle Operating
Modes
System Operation . . . . . . . . . . . 9-24
Electric Mode . . . . . . . . . . . . . . . . 9-25
Extended Range Mode . . . . . . 9-25
Driver Selected OperatingModes . . . . . . . . . . . . . . . . . . . . . . 9-26
Out of Fuel/Engine Unavailable . . . . . . . . . . . . . . . . 9-28
Maintenance Modes . . . . . . . . . 9-28
Engine Exhaust
Engine Exhaust . . . . . . . . . . . . . . 9-30
Running the Vehicle While Parked . . . . . . . . . . . . . . . . . . . . . 9-31
Electric Drive Unit
Electric Drive Unit . . . . . . . . . . . 9-32
Brakes
Antilock BrakeSystem (ABS) . . . . . . . . . . . . . . 9-33
Electric Parking Brake . . . . . . . 9-35
Regenerative Braking . . . . . . . . 9-37
Ride Control Systems
Traction Control System (TCS) . . . . . . . . . . . . . . 9-37
Electronic Stability Control (ESC) . . . . . . . . . . . . . . 9-39
Cruise Control
Cruise Control . . . . . . . . . . . . . . . 9-40
Object Detection Systems
Ultrasonic Parking Assist . . . . 9-43
Rear VisionCamera (RVC) . . . . . . . . . . . . . 9-46
Charging
Plug-In Charging . . . . . . . . . . . . . 9-49
Delayed ChargingOverride . . . . . . . . . . . . . . . . . . . . 9-52
Charging Status Feedback . . . . . . . . . . . . . . . . . . 9-52
Charge Cord . . . . . . . . . . . . . . . . . 9-54
Electrical Requirements for Battery Charging . . . . . . . . . . . 9-56

Black plate (7,1)Chevrolet Volt Owner Manual - 2011
Driving and Operating 9-7
Steering Tips
It is important to take curves at a
reasonable speed.
Traction in a curve depends on the
condition of the tires and the road
surface, the angle at which the
curve is banked, and vehicle speed.
While in a curve, speed is the one
factor that can be controlled.
If there is a need to reduce speed,
do it before entering the curve, while
the front wheels are straight.
Try to adjust the speed so you can
drive through the curve. Maintain a
reasonable, steady speed. Wait to
accelerate until out of the curve,
and then accelerate gently into the
straightaway.
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. See Braking
on page 9‑5. 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.

Black plate (9,1)Chevrolet Volt Owner Manual - 2011
Driving and Operating 9-9
Of course, traction is reduced when
water, snow, ice, gravel, or other
material is on the road. For safety,
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 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 is slippery
until the 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: Antilock brakes help
avoid only the braking skid.Driving 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 flowing water.
{WARNING
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)
WARNING (Continued)
Flowing or rushing water creates
strong forces. Driving through
flowing water could cause the
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 flowing water.
Hydroplaning
Hydroplaning is dangerous. Water
can build up under the 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 the 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.

Black plate (11,1)Chevrolet Volt Owner Manual - 2011
Driving and Operating 9-11
WARNING (Continued)
to slow the vehicle enough to
maintain speed and control.
You could crash. Always have
the vehicle running and in gear
(preferably LOW range) when
going downhill. This will allow
the electric drive unit to assist in
slowing and maintaining speed.
.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
Driving on Snow or Ice
Drive carefully when there is
snow or ice between the tires
and the road, creating less traction
or grip. Wet ice can occur at about
0°C (32°F) when freezing rain
begins to fall, resulting in even less
traction. Avoid driving on wet ice or
in freezing rain until roads can be
treated with salt or sand.
Drive with caution, whatever the
condition. Accelerate gently so
traction is not lost. Accelerating
too quickly causes the wheels to
spin and makes the surface under
the tires slick, so there is even less
traction.
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 vehicle stability during
hard stops on slippery roads, but
apply the brakes sooner than when
on dry pavement.
Allow greater following distance
on any slippery road and watch
for slippery spots. Icy patches can
occur on otherwise clear roads in
shaded areas. The surface of a
curve or an overpass can remain
icy when the surrounding roads
are clear. Avoid sudden steering
maneuvers and braking while
on ice.
Turn off cruise control on slippery
surfaces.

Black plate (13,1)Chevrolet Volt Owner Manual - 2011
Driving and Operating 9-13
If the Vehicle Is Stuck
Slowly and cautiously spin the
wheels to free the vehicle when
stuck in sand, mud, ice, or snow.
Shifting the vehicle into L will allow
the driver to achieve more wheel
spin. The wheel spin will still be
limited by the traction control
system to prevent any driveline
damage. The increase in allowable
wheel spin is only active at low
speeds.{WARNING
If the vehicle's tires spin at high
speed, they can explode, and
you or others could be injured.
The vehicle can overheat,
causing an engine compartment
fire or other damage. Spin the
wheels as little as possible and
avoid going above 55 km/h
(35 mph).
For information about using tire
chains on the vehicle, see Tire
Chains on page 10‑69.
Rocking the Vehicle to Get
it Out
Turn the steering wheel left and
right to clear the area around the
front wheels. Shift back and forth
between R (Reverse) and a forward
gear, spinning the wheels as little
as possible. The Traction Control
System prevents the tires from
spinning at high speeds. To prevent
electric drive unit wear, wait until the
wheels stop spinning before shifting
gears. Release the accelerator
pedal while shifting, and press
lightly on the accelerator pedal
when the electric drive unit is in
gear. Slowly spinning the wheels in
the forward and reverse directions
causes a rocking motion that could
free the vehicle. If that does not get
the vehicle out after a few tries, it
might need to be towed out. If the
vehicle does need to be towed out,
see Towing the Vehicle on
page 10‑84.

Black plate (37,1)Chevrolet Volt Owner Manual - 2011
Driving and Operating 9-37
Regenerative Braking
Regenerative braking takes some of
the energy from the moving vehicle
and turns it back into electrical
energy. This energy is then stored
back into the high voltage battery
system, contributing to increased
energy efficiency.
The hydraulic disc brakes work with
the regenerative braking to ensure
effective braking, such as when a
high braking demand is requested.
The braking system is
computer controlled and
blends the regenerative braking
with the conventional hydraulic disc
brakes to meet any requirements
for deceleration. The controllerinterprets the braking request
and uses regenerative braking,
conventional hydraulic braking, or a
combination of both as necessary.
Because the controller applies the
hydraulic brakes through its high
pressure accumulator, you may
occasionally hear the motor‐driven
pump when it recharges the system.
This is normal.
See
Warning Lights, Gauges,
and Indicators on page 5‑9 and
Driver Information Center (DIC) on
page 5‑43. In the event of a
controller problem, the brake pedal
may be harder to push and the
stopping distance may be longer.
Ride Control Systems
Traction Control
System (TCS)
The vehicle has a Traction Control
System (TCS) that limits wheel
spin. The system operates if it
senses that one or both of the drive
wheels are spinning or beginning to
lose traction. When this happens,
the system brakes the spinning
wheel(s) and/or reduces power
to limit wheel spin.
The system may be heard or felt
while it is working, but this is
normal.
To assist with directional control
of the vehicle, TCS comes on
automatically whenever the vehicle
is started and cannot be turned off.

Black plate (38,1)Chevrolet Volt Owner Manual - 2011
9-38 Driving and Operating
When the vehicle is started
and begins to move, 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). In some cases, it may
take approximately 3.2 km (2 mi) of
driving before the system initializes.
The Traction Control System may
activate on dry or rough roads or
under conditions such as heavy
acceleration while turning or abrupt
changes in output from the electric
drive unit. When this happens,
a reduction in acceleration may
be noticed, or a noise or vibration
may be heard. This is normal.
The TCS/StabiliTrak warning light
will flash to indicate that the traction
control system is active.
If there is a problem detected, the
SERVICE TRACTION CONTROL
message displays in the DIC.
SeeRide Control System Messages
on page 5‑50. When this message
is displayed and
dcomes on and
stays on, the vehicle is safe to drive
but the system is not operational. If
dcomes on and stays on, reset
the system:
1. Stop the vehicle.
2. Turn the vehicle off and wait 15 seconds.
3. Start the vehicle.
If
dstill comes on and stays on,
the vehicle needs service.
Adding non‐GM accessories
can affect vehicle performance.
See Accessories and Modifications
on page 10‑4 for more information.

Black plate (39,1)Chevrolet Volt Owner Manual - 2011
Driving and Operating 9-39
Electronic Stability
Control (ESC)
The vehicle has an Electronic
Stability Control system called
StabiliTrak. It is an advanced
computer‐controlled system that
assists with directional control of the
vehicle in difficult driving conditions.
StabiliTrak comes on automatically
whenever the vehicle is started and
cannot be turned off.
The system may be heard or felt
while it is working, but this is
normal.StabiliTrak activates when the
computer senses a difference
between the intended path and
the direction the vehicle is actually
traveling. StabiliTrak selectively
applies braking pressure to help
steer the vehicle in the intended
direction.
When the vehicle is started
and begins to move, 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). In some cases, it may
take approximately 3.2 km (2 mi) of
driving before the system initializes.
When the stability control system
activates, the Traction Control
System (TCS)/StabiliTrak light
flashes on the instrument cluster.
This also occurs when traction
control is activated. This is normal.
Continue to steer the vehicle in the
intended direction.
If there is a problem detected,
the SERVICE STABILITRAK
message displays in the DIC.
When this message is displayed
and the StabiliTrak light comes
on and stays on, the vehicle is
safe to drive but the system is
not operational. See
Ride Control
System Messages on page 5‑50.