sensor CHEVROLET VOLT 2011 User Guide

Black plate (43,1)Chevrolet Volt Owner Manual - 2011
Driving and Operating 9-43
Ending Cruise Control
There are three ways to end cruise
control:
.Step lightly on the brake pedal;
when cruise control disengages,
the indicator light will not be lit.
.Press*.
.Press1to turn the cruise
control system off completely.
The cruise control cannot be
resumed.
Erasing Speed Memory
The cruise control set speed
is erased from memory by
pressing
1or if the vehicle
is turned off.
Object Detection
Systems
Ultrasonic Parking Assist
For vehicles with the Ultrasonic
Front and Rear Parking Assist
(UFRPA) system, it assists the
driver with parking and avoiding
objects. UFRPA operates at
speeds less than 8 km/h (5 mph).
The sensors on the front and rear
bumper detect objects up to 1.2 m
(4 ft) in front of the vehicle, 2.5 m
(8 ft) behind the vehicle, and at
least 25.4 cm (10 in) off the ground.
{WARNING
The Ultrasonic Front and Rear
Parking Assist (UFRPA) system
does not replace driver vision.
It cannot detect:
.Objects that are below the
bumper, underneath the
vehicle, or if they are too
close or far from the vehicle.
.Children, pedestrians,
bicyclists, or pets.
If you do not use proper care
before moving forward and while
backing; vehicle damage, injury,
or death could occur. Even with
UFRPA, always check in front of
the vehicle before moving forward
and behind the vehicle before
backing up. While moving forward
and backing, be sure to look for
objects and check the vehicle
mirrors.

Black plate (44,1)Chevrolet Volt Owner Manual - 2011
9-44 Driving and Operating
How the System Works
UFRPA comes on automatically
when the shift lever is moved into
R (Reverse). The front and rear
sensors are automatically turned on.
After the vehicle is shifted out of
R (Reverse), the rear sensors are
turned off and the front sensors
stay on until the vehicle is above a
speed of 8 km/h (5 mph). The front
sensors may also be turned on by
pressing the park assist button
in the overhead console without
shifting into R (Reverse) while the
vehicle is traveling at a low speed.
See“Turning the System On and
Off” later in this section.
When the vehicle is in N (Neutral),
the system may be active. If the
vehicle is in a car wash, the sensors
may detect objects in the car wash.
See “Turning the System On and
Off” later in this section to turn the
system off. High-toned beeps from the front
speakers are for objects detected
near the front bumper. Low-toned
beeps from the rear speakers are
for objects detected near the rear
bumper. The interval between the
beeps becomes shorter as the
vehicle gets closer to the obstacle.
When the distance is less than
30 cm (12 in) the beeps are
continuous.
To be detected, objects must be at
least 25.4 cm (10 in) off the ground
and below hood or hatch level.
Objects must also be within
1.2 m (4 ft) in front of the vehicle
and 2.5 m (8 ft) from the rear
bumper. This distance may be less
during warmer or humid weather.
PARK ASSIST OFF displays on
the Driver Information Center (DIC)
to indicate that UFRPA is off.
The message disappears after
a short period of time.
Objects Detected by Both the
Front and Rear Sensors
If objects are detected at the
same time near both the front and
rear bumpers while backing up,
the beeps only sound to indicate
that objects are close to the rear
bumper.
If an object comes within 0.3 m (1 ft)
of the front bumper while the vehicle
is backing up and at the same time
there is another object further than
0.3 m (1 ft) from the rear bumper,
then the beeps only sound to
indicate the object that is closer
to the front bumper.

Black plate (45,1)Chevrolet Volt Owner Manual - 2011
Driving and Operating 9-45
Turning the System On and Off
The UFRPA system can be turned
on and off by pressing the park
assist button in the overhead
console.
The park assist button lights up
when the system is on and turns
off when it has been disabled.
When the System Does Not
Seem to Work Properly
If UFRPA does not turn on due to a
temporary condition, the message
PARK ASSIST OFF displays on the
DIC, and the light on the park assist
button turns off. This can occur
under the following conditions:
.The ultrasonic sensors are not
clean. Keep the sensors free of
mud, dirt, snow, ice, and slush.
For cleaning instructions, see
Exterior Care on page 10‑89.
.The vehicle was washed in cold
weather. This may cause frost
or ice to form in the park assist
sensors. Keep the sensors free
of frost or ice.
.An object was hanging out of the
hatch during the last drive cycle.
Once the attached object is
removed, UFRPA will return to
normal operation.
.The bumper is damaged.
Take the vehicle to your
dealer to repair the system.
.Other conditions may affect
system performance, such as
vibrations from a jackhammer or
the compression of air brakes
on a very large truck.

Black plate (55,1)Chevrolet Volt Owner Manual - 2011
Vehicle Care 10-55
For additional information
regarding how much weight
the vehicle can carry, and an
example of the Tire and Loading
Information label, seeVehicle
Load Limits on page 9‑14.
How the vehicle is loaded
affects vehicle handling and
ride comfort. Never load the
vehicle with more weight than
it was designed to carry.
When to Check
Check the tires once a month
or more.
How to Check
Use a good quality pocket-type
gauge to check tire pressure.
Proper tire inflation cannot be
determined by looking at the tire.
Check the tire inflation pressure
when the tires are cold, meaning the vehicle has not been driven
for at least three hours or no
more than 1.6 km (1 mi).
Remove the valve cap from the
tire valve stem. Press the tire
gauge firmly onto the valve to
get a pressure measurement.
If the cold tire inflation pressure
matches the recommended
pressure on the Tire and
Loading Information label, no
further action is necessary.
If the inflation pressure is low,
add air until the recommended
pressure is reached. If the
inflation pressure is high, press
the metal stem in the center
of the tire valve to release air.
Re‐check the tire pressure
with the tire gauge.
Return the valve caps on the
valve stems to prevent leaks
and keep out dirt and moisture.Tire Pressure Monitor
System
The Tire Pressure Monitor System
(TPMS) uses radio and sensor
technology to check tire pressure
levels. The TPMS sensors monitor
the air pressure in your tires and
transmit tire pressure readings to
a receiver located in the vehicle.
Each tire, including the spare
(if provided), should be checked
monthly when cold and inflated to
the inflation pressure recommended
by the vehicle manufacturer on
the vehicle placard or tire inflation
pressure label. (If your vehicle has
tires of a different size than the size
indicated on the vehicle placard or
tire inflation pressure label, you
should determine the proper tire
inflation pressure for those tires.)

Black plate (57,1)Chevrolet Volt Owner Manual - 2011
Vehicle Care 10-57
Tire Pressure Monitor
Operation
This vehicle may have a Tire
Pressure Monitor System (TPMS).
The TPMS is designed to warn
the driver when a low tire pressure
condition exists. TPMS sensors
are mounted onto each tire and
wheel assembly. The TPMS sensors
monitor the air pressure in the
tires and transmit the tire pressure
readings to a receiver located in
the vehicle.
When a low tire pressure condition
is detected, the TPMS illuminates
the low tire pressure warning light
located on the instrument cluster.
If the warning light comes on, stop
as soon as possible and inflate the
tires to the recommended pressure
shown on the Tire Loading and
Information label. SeeVehicle
Load Limits on page 9‑14. A message to check the pressure in
a specific tire displays in the Driver
Information Center (DIC). The low
tire pressure warning light and the
DIC warning message come on
at each drive cycle until the tires
are inflated to the correct inflation
pressure. Using the DIC, tire
pressure levels can be viewed.
For additional information and
details about the DIC operation
and displays see
Driver Information
Center (DIC) on page 5‑43.
The low tire pressure warning light
may come on in cool weather when
the vehicle is first started, and then
turn off as the vehicle is driven.

Black plate (58,1)Chevrolet Volt Owner Manual - 2011
10-58 Vehicle Care
This could be an early indicator that
the air pressure is getting low and
needs to be inflated to the proper
pressure.
A Tire and Loading Information
label shows the size of the original
equipment tires and the correct
inflation pressure for the tires when
they are cold. SeeVehicle Load
Limits on page 9‑14, for an example
of the Tire and Loading Information
label and its location. Also see Tire
Pressure on page 10‑54.
The TPMS can warn about
a low tire pressure condition but
it does not replace normal tire
maintenance. See Tire Inspection
on page 10‑61, Tire Rotation on
page 10‑61, and Tires on
page 10‑48. Notice:
Tire sealant materials are
not all the same. A non-approved
tire sealant could damage the
TPMS sensors. TPMS sensor
damage caused by using
an incorrect tire sealant is
not covered by the vehicle
warranty. Always use only
the GM-approved tire sealant
available through your dealer
or included in the vehicle.
Factory-installed Tire Inflator Kits
use a GM-approved liquid tire
sealant. Using non-approved tire
sealants could damage the TPMS
sensors. See Tire Sealant and
Compressor Kit on page 10‑71 for
information regarding the inflator
kit materials and instructions.TPMS Malfunction Light and
Message
The TPMS will not function properly
if one or more of the TPMS sensors
are missing or inoperable. When
the system detects a malfunction,
the low tire pressure warning light
flashes for about one minute and
then stays on for the remainder
of the vehicle on/off cycle. A DIC
warning message also displays.
The malfunction light and DIC
warning message come on at
each vehicle on/off cycle until the
problem is corrected. Some of the
conditions that can cause these to
come on are:
.One of the road tires has
been replaced with the spare
tire, if the vehicle has one.
The spare tire does not
have a TPMS sensor.

Black plate (59,1)Chevrolet Volt Owner Manual - 2011
Vehicle Care 10-59
The malfunction light and DIC
message should go off after
the road tire is replaced and
the sensor matching process
is performed successfully.
See "TPMS Sensor Matching
Process" later in this section.
.The TPMS sensor matching
process was started but not
completed or not completed
successfully after rotating the
tires. The DIC message and
malfunction light should go
off once the TPMS sensor
matching process is performed
successfully. See“TPMS Sensor
Matching Process” later in this
section.
.One or more TPMS sensors are
missing or damaged. The DIC
message and the malfunction
light should go off when the
TPMS sensors are installed and
the sensor matching process
is performed successfully.
See your dealer for service.
.Replacement tires or wheels do
not match the original equipment
tires or wheels. Tires and wheels
other than those recommended
could prevent the TPMS from
functioning properly. See Buying
New Tires on page 10‑63.
.Operating electronic devices or
being near facilities using radio
wave frequencies similar to the
TPMS could cause the TPMS
sensors to malfunction.
If the TPMS is not functioning
properly , it cannot detect or signal a
low tire condition. See your dealer
for service if the TPMS malfunction
light and DIC message come on
and stay on.
TPMS Sensor Matching
Process
Each TPMS sensor has a unique
identification code. The identification
code needs to be matched to a
new tire/wheel position after rotating
the vehicle’ s tires or replacing
one or more of the TPMS sensors.
Also, the TPMS sensor matching
process should be performed after
replacing a spare tire with a road
tire containing the TPMS sensor.
The malfunction light and the
DIC message should go off at the
next drive cycle. The sensors are
matched to the tire/wheel positions,
using a TPMS relearn tool, in the
following order: driver side front tire,
passenger side front tire, passenger
side rear tire, and driver side rear.
See your dealer for service or to
purchase a relearn tool.

Black plate (60,1)Chevrolet Volt Owner Manual - 2011
10-60 Vehicle Care
There are two minutes to match
the first tire/wheel position, and
five minutes overall to match all
four tire/wheel positions. If it takes
longer, the matching process stops
and must be restarted.
Follow the TPMS sensor matching
process:
1. Set the parking brake.
2. Put the vehicle in ON/RUN andplace the vehicle in P (Park).
3. If the DIC display is minimized, press the SELECT knob to
maximize it.
4. Use the SELECT knob to scroll to the Tire Pressure display
screen.
5. Press and hold the SELECT knob for five seconds to begin
the sensor matching process.
A message displays confirming
to begin the process. 6. Use the SELECT knob to
select YES with the highlighted
selection, and press the
SELECT knob again to
confirm the selection.
The horn sounds twice to signal
the receiver is in relearn mode
and the TIRE LEARNING
ACTIVE message displays
on the DIC screen.
7. Start with the driver side front tire.
8. Place the relearn tool against the tire sidewall, near the valve
stem. Then press the button
to activate the TPMS sensor.
A horn chirp confirms that the
sensor identification code has
been matched to this tire and
wheel position. 9. Proceed to the passenger
side front tire, and repeat the
procedure in Step 8.
10. Proceed to the passenger side rear tire, and repeat the
procedure in Step 8.
11. Proceed to the driver side rear tire, and repeat the procedure
in Step 8. The horn sounds two
times to indicate the sensor
identification code has been
matched to the driver side
rear tire, and the TPMS sensor
matching process is no longer
active. The TIRE LEARNING
ACTIVE message on the DIC
display screen goes off.
12. Turn the vehicle off.
13. Set all four tires to the recommended air pressure
level as indicated on the Tire
and Loading Information label.

Black plate (68,1)Chevrolet Volt Owner Manual - 2011
10-68 Vehicle Care
Replace wheels, wheel bolts,
wheel nuts, or Tire Pressure Monitor
System (TPMS) sensors with new
GM original equipment parts.
{WARNING
Using the wrong replacement
wheels, wheel bolts, or wheel
nuts can be dangerous. It could
affect the braking and handling
of the vehicle. Tires can lose air,
and cause loss of control, causing
a crash. Always use the correct
wheel, wheel bolts, and wheel
nuts for replacement.
Notice: The wrong wheel
can also cause problems with
bearing life, brake cooling,
speedometer or odometer
calibration, headlamp aim,
bumper height, vehicle ground
clearance, and tire clearance
to the body and chassis.
{WARNING
Rust or dirt on a wheel,
or on the parts to which it is
fastened, can make wheel
nuts become loose after a
time. The wheel could come
off and cause a crash. When
changing a wheel, remove
any rust or dirt from places
where the wheel attaches to
the vehicle. In an emergency,
a cloth or a paper towel can
be used, however, use a
scraper or wire brush to
remove all rust or dirt.
{WARNING
Never use oil or grease on studs
or the threads of the wheel nuts.
The wheel nuts might come loose
and the wheel could fall off,
causing a crash.
{WARNING
Incorrect wheel nuts or improperly
tightened wheel nuts can cause
the wheel to become loose and
even come off. This could lead
to a crash. Be sure to use the
correct wheel nuts. If you have
to replace them, be sure to get
new GM original equipment
wheel nuts.
Notice: Improperly tightened
wheel nuts can lead to brake
pulsation and rotor damage.
To avoid expensive brake repairs,
evenly tighten the wheel nuts in
the proper sequence and to the
proper torque specification.