sensor CHEVROLET HHR 2009 1.G Owners Manual

When Should an Airbag Inate?
Frontal airbags are designed to inate in moderate to
severe frontal or near-frontal crashes to help reduce the
potential for severe injuries mainly to the driver’s or right
front passenger’s head and chest. However, they are only
designed to inate if the impact exceeds a predetermined
deployment threshold. Deployment thresholds are used
to predict how severe a crash is likely to be in time for the
airbags to inate and help restrain the occupants.
Whether your frontal airbags will or should deploy is not
based on how fast your vehicle is traveling. It depends
largely on what you hit, the direction of the impact,
and how quickly your vehicle slows down.
Frontal airbags may inate at different crash speeds.
For example:
If the vehicle hits a stationary object, the airbags
could inate at a different crash speed than if the
vehicle hits a moving object.
If the vehicle hits an object that deforms, the
airbags could inate at a different crash speed than
if the vehicle hits an object does not deform.
If the vehicle hits a narrow object (like a pole), the
airbags could inate at a different crash speed
than if the vehicle hits a wide object (like a wall).
If the vehicle goes into an object at an angle, the
airbags could inate at a different crash speed
than if the vehicle goes straight into the object.
Thresholds can also vary with specic vehicle design.
Frontal airbags are not intended to inate during vehicle
rollovers, rear impacts, or in many side impacts.
In addition, your vehicle has dual-stage frontal airbags.
Dual-stage airbags adjust the restraint according to
crash severity. Your vehicle has an electronic frontal
sensor, which helps the sensing system distinguish
between a moderate frontal impact and a more severe
frontal impact. For moderate frontal impacts, dual-stage
airbags inate at a level less than full deployment.
For more severe frontal impacts, full deployment occurs.
Your vehicle may or may not have roof-rail airbags.
SeeAirbag System on page 1-58. Roof-rail airbags are
intended to inate in moderate to severe side crashes.
In addition, these roof-rail airbags are intended to inate
during a rollover. Roof-rail airbags will inate if the crash
severity is above the system’s designed threshold level.
The threshold level can vary with specic vehicle design.
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The passenger sensing system will turn off the right
front passenger frontal airbag under certain conditions.
The driver airbag and roof-rail airbags (if equipped)
are not affected by the passenger sensing system.
The passenger sensing system works with sensors that
are part of the right front passenger seat. The sensors
are designed to detect the presence of a properly-seated
occupant and determine if the right front passenger
frontal airbag should be enabled (may inate) or not.
According to accident statistics, children are safer when
properly secured in a rear seat in the correct child
restraint for their weight and size.
We recommend that children be secured in a rear seat,
including: an infant or a child riding in a rear-facing
child restraint; a child riding in a forward-facing child
seat; an older child riding in a booster seat; and children,
who are large enough, using safety belts.
A label on the sun visor says, “Never put a rear-facing
child seat in the front.” This is because the risk to
the rear-facing child is so great, if the airbag deploys.
{CAUTION:
A child in a rear-facing child restraint can be
seriously injured or killed if the right front passenger
airbag inates. This is because the back of the
rear-facing child restraint would be very close to the
inating airbag. A child in a forward-facing child
restraint can be seriously injured or killed if the right
front passenger airbag inates and the passenger
seat is in a forward position.
Even if the passenger sensing system has turned
off the right front passenger frontal airbag, no
system is fail-safe. No one can guarantee that
an airbag will not deploy under some unusual
circumstance, even though the airbag is turned off.
Secure rear-facing child restraints in a rear
seat, even if the airbag is off. If you secure a
forward-facing child restraint in the right front seat,
always move the front passenger seat as far back
as it will go. It is better to secure the child restraint in
a rear seat.
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Passenger Sensing System
(With Turbo and RPO AR9 or AE4)
This information is for vehicles with a turbo engine and
Regular Production Option (RPO) code AR9 or AE4.
RPO codes are listed on the Service Parts Identication
label. SeeService Parts Identification Label on
page 5-107.
The vehicle has a passenger sensing system for the
right front passenger position. The passenger airbag
status indicator will be visible on the instrument
panel when the vehicle is started.
The words ON and OFF, or the symbol for on and off,
will be visible during the system check. If you are
using remote start to start the vehicle from a distance,if equipped, you may not see the system check. When
the system check is complete, either the word ON or the
word OFF, or the symbol for on or off, will be visible.
SeePassenger Airbag Status Indicator on page 3-31.
The passenger sensing system will turn off the right front
passenger frontal airbag under certain conditions. The
driver airbag and roof-rail airbags (if equipped) are
not affected by the passenger sensing system.
The passenger sensing system works with sensors that
are part of the right front passenger seat. The sensors
are designed to detect the presence of a properly-seated
occupant and determine if the right front passenger
frontal airbag should be enabled (may inate) or not.
According to accident statistics, children are safer when
properly secured in a rear seat in the correct child
restraint for their weight and size.
We recommend that children be secured in a rear seat,
including: an infant or a child riding in a rear-facing
child restraint; a child riding in a forward-facing child
seat; an older child riding in a booster seat; and children,
who are large enough, using safety belts.
A label on the sun visor says, “Never put a rear-facing
child seat in the front.” This is because the risk to
the rear-facing child is so great, if the airbag deploys. United States
Canada
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Adding Equipment to Your
Airbag-Equipped Vehicle
Q:Is there anything I might add to or change
about the vehicle that could keep the airbags
from working properly?
A:Yes. If you add things that change the vehicle’s
frame, bumper system, height, front end or side
sheet metal, they may keep the airbag system from
working properly. Changing or moving any parts
of the front seats, safety belts, the airbag sensing
and diagnostic module, steering wheel, instrument
panel, roof-rail airbag modules, ceiling headliner
or pillar garnish trim, front sensors, side impact
sensors, rollover sensor module, or airbag wiring
can affect the operation of the airbag system.
In addition, the vehicle has a passenger sensing
system for the right front passenger position, which
includes sensors that are part of the passenger seat.The passenger sensing system may not operate
properly if the original seat trim is replaced with
non-GM covers, upholstery or trim, or with GM
covers, upholstery or trim designed for a different
vehicle. Any object, such as an aftermarket seat
heater or a comfort enhancing pad or device,
installed under or on top of the seat fabric, could
also interfere with the operation of the passenger
sensing system. This could either prevent proper
deployment of the passenger airbag(s) or prevent
the passenger sensing system from properly turning
off the passenger airbag(s). SeePassenger Sensing
System (Without Turbo/With Turbo and RPO AS5)
on page 1-66orPassenger Sensing System (With
Turbo and RPO AR9 or AE4) on page 1-72.
If you have questions, call Customer Assistance.
The phone numbers and addresses for Customer
Assistance are in Step Two of the Customer
Satisfaction Procedure in this manual. See
Customer Satisfaction Procedure on page 7-2.
If the vehicle has rollover roof-rail airbags,
seeDifferent Size Tires and Wheels on page 5-71
for additional important information.
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Q:Because I have a disability, I have to get my
vehicle modied. How can I nd out whether
this will affect my airbag system?
A:If you have questions, call Customer Assistance.
The phone numbers and addresses for Customer
Assistance are in Step Two of the Customer
Satisfaction Procedure in this manual. See
Customer Satisfaction Procedure on page 7-2.
In addition, your dealer/retailer and the service manual
have information about the location of the airbag sensors,
sensing and diagnostic module and airbag wiring.
Restraint System Check
Checking the Restraint Systems
Safety Belts
Now and then, check that the safety belt reminder light,
safety belts, buckles, latch plates, retractors, and
anchorages are all working properly.
Look for any other loose or damaged safety belt system
parts that might keep a safety belt system from doing its
job. See your dealer/retailer to have it repaired. Torn orfrayed safety belts may not protect you in a crash.
They can rip apart under impact forces. If a belt is torn
or frayed, get a new one right away.
Make sure the safety belt reminder light is working.
SeeSafety Belt Reminders on page 3-29for more
information.
Keep safety belts clean and dry. SeeCare of Safety
Belts on page 5-102.
Airbags
The airbag system does not need regularly scheduled
maintenance or replacement. Make sure the airbag
readiness light is working. SeeAirbag Readiness Light
on page 3-30for more information.
Notice:If an airbag covering is damaged, opened,
or broken, the airbag may not work properly. Do not
open or break the airbag coverings. If there are any
opened or broken airbag covers, have the airbag
covering and/or airbag module replaced. For the
location of the airbag modules, seeWhat Makes an
Airbag Inflate? on page 1-64. See your dealer/retailer
for service.
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Wiper Activated Headlamps
The headlamps and parking lamps are activated
15 seconds after the windshield wipers are turned on.
For this feature to work, automatic lighting must be
enabled. SeeHeadlamps on page 3-14for additional
information.
When the ignition is turned off, the wiper-activated
headlamps will immediately turn off. They also turn off
15 seconds after the windshield wiper control is
turned off.
Headlamps on Reminder
If the drivers door is opened with the ignition off and the
lamps on, a warning chime will sound. This indicates
that the headlamps are still on.
Daytime Running Lamps (DRL)
Daytime Running Lamps (DRL) can make it easier for
others to see the front of your vehicle during the day.
Fully functional daytime running lamps are required on
all vehicles rst sold in Canada.The vehicle has a light sensor on top of the instrument
panel. Do not cover this sensor or the headlamps
will come on when they are not needed.
The DRL system will make the headlamps come on
at reduced brightness when the following conditions
are met:
The ignition is on.
The exterior lamp control is turned to AUTO.
The light sensor detects daytime light.
The shift lever is not in P (Park).
While the DRL system is on, the taillamps, sidemarker
lamps, and instrument panel lights will not be on.
For vehicles with an Automatic Transmission, the
DRL system is off any time the vehicle is in P (Park).
For vehicles with a Manual Transmission, the DRL
system will be off when the vehicle is rst started, the
park brake is applied, and the vehicle has not moved.
The DRL system on U.S. vehicles can also be turned
off by using the off/on switch for one ignition cycle.
The regular headlamp system should be turned on when
needed.
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Automatic Headlamp System
When it is dark enough outside, the automatic system
turns on the headlamps at the normal brightness along
with other lamps such as the taillamps, sidemarker,
parking lamps, instrument panel lights, and interior switch
backlighting.
Do not cover the light sensor, located on top of the
instrument panel. If the sensor is covered the headlamps
may remain on when they are not needed.
If the vehicle is driven through a parking garage, overcast
weather or a tunnel, the automatic headlamp system may
turn on.
There is a delay in the transition between the daytime
and nighttime operation of the automatic lamp control
system so that driving under bridges or bright overhead
street lights does not affect the system. The automatic
lamp control system will only be affected when the light
sensor sees a change in lighting lasting longer than this
delay.
If the vehicle is started in a dark garage, the automatic
lamp system turns on immediately. Once the vehicle
exits the garage, it will take about 20 seconds for the
automatic lamp system to change to DRL if it is light
outside. During that delay, the instrument panel cluster
may not be as bright as usual. Make sure the instrument
panel brightness control is in the full bright position.
SeeInstrument Panel Brightness on page 3-17.To idle the vehicle with the system off, turn the ignition
on and turn the exterior light switch to the off/on position.
For vehicles rst sold in Canada, the transmission must
stay in P (Park) for this function or the parking brake must
be set for vehicles with manual transmissions.
Turn on the regular headlamps when they are needed.
Fog Lamps
For vehicles with fog lamps, the button is located on the
instrument panel, to the right of the steering wheel.
The ignition must be on to use the fog lamps.
#:Press to turn the fog lamps on and off. An indicator
light on the button comes on when the fog lamps are on.
The parking lamps automatically turn on and off when the
fog lamps are turned on and off.
The fog lamps will turn off while the high-beam
headlamps are turned on.
Some localities have laws that require the headlamps to
be on along with the fog lamps.
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Airbag Readiness Light
The system checks the airbag’s electrical system for
possible malfunctions. If the light stays on it indicates
there is an electrical problem. The system check
includes the airbag sensor, the pretensioners, the
airbag modules, the wiring and the crash sensing
and diagnostic module. For more information on the
airbag system, seeAirbag System on page 1-58.
The airbag readiness light
ashes for a few seconds
when the engine is
started. If the light does
not come on then, have it
xed immediately.{CAUTION:
If the airbag readiness light stays on after the
vehicle is started or comes on while driving, it
means the airbag system might not be working
properly. The airbags in the vehicle might not
inate in a crash, or they could even inate
without a crash. To help avoid injury, have the
vehicle serviced right away.
If there is a problem with the airbag system, an airbag
Driver Information Center (DIC) message can also come
on. SeeDIC Warnings and Messages on page 3-50
for more information.
3-30

Region A Gage and Speedometer
Displays
Change the information displayed in Region A by
turning the knob either clockwise or counterclockwise.
The available gages are:
BOOST:Displays positive boost pressure as
determined by the manifold air pressure (MAP) sensor.
AIR/FUEL RATIO:Displays the mass ratio of air
to fuel.
CAM PHASER ANGLES:Displays orientation of the
intake and exhaust cam shafts relative to their park
positions as commanded by the engine control module.
OVERLAP represents the total distance the intake and
exhaust cam shafts have phased.
SPARK ADVANCE/ KNOCK RETARD:The spark
advance gage displays ignition timing. Knock retard
indicates the amount of ignition delay to reduce spark
knock.
ENGINE POWER & TORQUE:Displayed engine power
and torque are engine ywheel output values calculated
by the engine control module. These values are
approximate and may change with the air conditioning
load, generator output, air temperature, air pressure, and
fuel octane.SPEEDOMETER&GFORCE:The G FORCE meter
displays lateral acceleration. While turning right, G forces
are felt on the left, and vice versa. PEAK values are
stored indenitely, and can be reset with a press and hold
of the RPD knob while viewing the G FORCE meter.
SETUP MENU:Press the RPD knob to enter this menu.
The vehicle should be stopped while conguring the
setup menu selections.
SCREEN OFF:Turns the screen off.
Region B Readout Displays
Press the RPD knob to highlight Region B. The
information displayed can be changed by turning
the RPD knob either clockwise or counterclockwise.
Press the RPD knob again, to store the selection.
The selection will also be stored after a few seconds
of no activity. Available modes are:
Readouts #1
SHIFT LIGHTS/GEAR INDICATION:The shift lights
provide visual identication of engine speed for a
transmission gear. Shift light minimum and maximum
RPM settings can be viewed and congured in the
SETUP screen.
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Readouts #2
TIRE PRESSURES:Displays the last gage tire
pressures recorded from each of the wheel mounted
tire pressure sensors.
Readouts #3
BAROMETER:Displays ambient air pressure as
measured by the engine’s ambient pressure sensor.
OUTSIDE TEMPERATURE:Displays ambient
temperature as measured by an outside air temperature
sensor.
BATTERY VOLTAGE:Displays the vehicle’s battery
voltage.
Readouts #4
COOLANT TEMPERATURE:Displays engine coolant
temperature as measured by a coolant temperature
sensor.
INLET AIR TEMPERATURE:Displays the
instantaneous temperature of the air at the inlet to the
induction system.
FUEL PRESSURE:Displays fuel pressure as
measured by a sensor on the output of the
high-pressure fuel pump.
INDICATORS
The indicators come on when the corresponding function
is actively working to stabilize or control the vehicle. Each
indicator light on the RPD display can be turned on and
off using the SETUP MENU. These indicators work
independently of the telltales on the instrument panel
cluster. Turning the indicator on the RPD display on or off
does not enable or disable the functions on the vehicle.
This indicator comes on whenever the vehicle
StabiliTrak
®is actively working.
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