2008 DODGE CALIBER sensor

The front airbag system consists of the following:
•Occupant Restraint Controller (ORC)
•Side Remote Acceleration Sensors (If Equipped)
•Airbag Warning Light
•Driver Airbag
•Front Passenger Airbag
•Supplemental Side Curtain Airbags Above Side Win-
dows (If Equipped)
•Steering Wheel and Column
•Instrument Panel
•Interconnecting Wiring
•Seatbelt Reminder Light
•Knee Impact Bolsters
•Driver Inflatable Knee Blocker
•Front Acceleration Sensors
•Driver and Front Passenger Seat Belt Pretensioners
How The Airbag System Works
•
TheOccupant Restraint Controller (ORC)determines
if a frontal collision is severe enough to require the
airbags to inflate. The front airbag inflators are de-
signed to provide different rates of airbag inflation
from direction provided by the ORC. This ORC will
detect roll over.
The ORC also monitors the readiness of the electronic
parts of the system whenever the ignition switch is in
the START or ON position. These include all of the
items listed above except the knee bolster, the instru-
ment panel, and the steering wheel and column. If the
key is in the LOCK position, in the ACC position, or
not in the ignition, the airbags are not on and will not
inflate.
52 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE

•TheSide Impact (SRS) Side Curtain Airbags (If
Equipped)are designed to activate only in certain side
collisions.
The ORC module determines if a side collision is
severe enough to require the side airbags to inflate.
The side airbag control module will not detect roll
over, front or rear collisions.
The ORC module monitors the readiness of the electronic
parts of the system whenever the ignition switch is in the
START or ON position. These include all of the items
previously mentioned.
In moderate to severe side collisions, the side airbag
inflator on the crash side of the vehicle is triggered,
releasing a quantity of nontoxic gas. The side curtain
airbag moves at a very high speed and with such a high
force, that it could injure you if you are not seatedproperly, or if items are positioned in the area where the
side curtain airbag inflates. This especially applies to
children.
NOTE:If your vehicle is equipped with left and right
side curtain airbags, do not install a clothing bar
mounted to the coat hooks (or similarly mounted). A
clothing bar will impede the proper performance of the
bags.
•When the ORC and the impact sensors detect a
collision requiring theDriver Inflatable Knee
Blocker,it signals the inflator unit. A quantity of
nontoxic gas is generated to inflate the Driver Inflat-
able Knee Blocker. The Driver Inflatable Knee Blocker
inflates rearward toward the driver’s knees to help
protect the knees and position the driver for the best
interaction with the front airbag. The Driver Inflatable
Knee Blocker fully inflates in about 50 milliseconds;
54 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE

moment of airbag deployment, or near-deployment, and
up to a quarter-second of high-speed deceleration data
during and/or after airbag deployment or near-
deployment. EDR data are ONLY recorded if an airbag
deploys, or nearly deploys, and are otherwise unavail-
able.
NOTE:
1. A near-deployment event occurs when the airbag
sensor detects severe vehicle deceleration usually indica-
tive of a crash, but not severe enough to warrant airbag
deployment.
2. Under certain circumstances, EDR data may not be
recorded (e.g., loss of battery power).
In conjunction with other data gathered during a com-
plete accident investigation, the electronic data may be
used by DaimlerChrysler and others to learn more about
the possible causes of crashes and associated injuries in
order to assess and improve vehicle performance. Inaddition to crash investigations initiated by
DaimlerChrysler, such investigations may be requested
by customers, insurance carriers, government officials,
and professional crash researchers, such as those associ-
ated with universities, and with hospital and insurance
organizations.
In the event that an investigation is undertaken by
DaimlerChrysler (regardless of initiative), the company
or its designated representative will first obtain permis-
sion of the appropriate custodial entity for the vehicle
(usually the vehicle owner or lessee) before accessing the
electronic data stored, unless ordered to download data
by a court with legal jurisdiction (i.e., pursuant to a
warrant). A copy of the data will be provided to the
custodial entity upon request. General data that does not
identify particular vehicles or crashes may be released for
incorporation in aggregate crash databases, such as those
maintained by the U.S. government and various states.
Data of a potentially sensitive nature, such as would
58 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE

Traction Control System (TCS)
This system monitors the amount of wheel spin of each of
the driven wheels. If wheel spin is detected, brake
pressure is applied to the slipping wheel(s) and engine
power is reduced to provide enhanced acceleration and
stability. A feature of the TCS system functions similar to
a limited slip differential and controls the wheel spin
across a driven axle. If one wheel on a driven axle is
spinning faster than the other, the system will apply the
brake of the spinning wheel. This will allow more engine
torque to be applied to the wheel that is not spinning.
This feature remains active even if TCS and ESP are in the
“Partial Off” mode. Refer to “Electronic Stability Pro-
gram (ESP)” in this Section of this manual.
Electronic Stability Program (ESP)
This system enhances directional control and stability of
the vehicle under various driving conditions. ESP cor-
rects for over-steering or under-steering of the vehicle by
applying the brake of the appropriate wheel to assist in
counteracting the over-steering or under-steering condi-
tion. Engine power may also be reduced to help the
vehicle maintain the desired path. ESP uses sensors in the
vehicle to determine the vehicle path intended by the
driver and compares it to the actual path of the vehicle.
When the actual path does not match the intended path,
ESP applies the brake of the appropriate wheel to assist in
counteracting the over-steer or under-steer condition.
•Over-steer - when the vehicle is turning more than
appropriate for the steering wheel position.
•Under-steer - when the vehicle is turning less than
appropriate for the steering wheel position.
UNDERSTANDING THE FEATURES OF YOUR VEHICLE 131
3

CAUTION!
The TPMS has been optimized for the original
equipment tires and wheels. TPMS pressures and
warning have been established for the tire size
equipped on your vehicle. Undesirable system opera-
tion or sensor damage may result when using re-
placement equipment that is not of the same size,
type, and/or style. Aftermarket wheels can cause
sensor damage. Do not use aftermarket tire sealants
or balance beads if your vehicle is equipped with a
TPMS, as damage to the sensors may result.
15. Odometer/Trip Odometer
This display indicates the total distance the vehicle has
been driven. Also, the cluster will display, replacing the
odometer/trip odometer, vehicle warning messages such
as: “door/gate ajar” and “gASCAP” (loose gas cap) and“Change Oil” message. Loose gas cap (gASCAP) will be
displayed from the Odometer/Trip Odometer on all
models.
NOTE:If the vehicle is equipped with the optional
Electronic Vehicle Information Center (EVIC) in the in-
strument cluster, all warnings including “door” and
“gATE” and “Oil Change Required” will only be dis-
played in the EVIC display. For additional information,
refer to “Electronic Vehicle Information Center — If
Equipped” in Section 3.
Change Oil Message
Your vehicle is equipped with an engine oil change
indicator system. The “Change Oil” message will flash in
the instrument cluster odometer for approximately 12
seconds after a single chime has sounded to indicate the
next scheduled oil change interval. The engine oil change
168 UNDERSTANDING YOUR INSTRUMENT PANEL

Setting The Compass Variance And Compass
Calibration
Compass Variance
Compass Variance is the difference between magnetic
North and geographic North. In some areas of the
country, the difference between magnetic and geographic
North is great enough to cause the compass to give false
readings. In order to ensure compass accuracy, the com-
pass variance should be set to the zone number on the
compass variance map that corresponds to the current
location of the vehicle.
NOTE:Magnetic materials should be kept away from
the Instrument Panel. This is where the compass sensor is
located.
UNDERSTANDING YOUR INSTRUMENT PANEL 183
4

The system will automatically update and the Tire Pressure
Monitoring Telltale Light will turn off once the system
receives the updated tire pressures. The vehicle may need
to be driven for up to 10 minutes above 15 mph (25 km/h)
in order for the TPMS to receive this information.
For example, your vehicle may have a recom-
mended cold (parked for more than three hours)
placard pressure of 30 psi (207 kPa). If the ambient
temperature is 68°F (20°C) and the measured tire
pressure is 27 psi (186 kPa), a temperature drop to
20°F (-7°C) will decrease the tire pressure to ap-
proximately 26 psi (179 kPa). This tire pressure is
sufficiently low enough to turn ON the Tire Pressure
Monitoring Telltale Light. Driving the vehicle may
cause the tire pressure to rise to approximately 27
psi (186 kPa), but the Tire Pressure Monitoring
Telltale Light will still be ON. In this situation, the
Tire Pressure Monitoring Telltale Light will turn
OFF only after the tires are inflated to the vehicle’s
recommended cold placard pressure value.
CAUTION!
•The TPMS has been optimized for the original
equipment tires and wheels. TPMS pressures and
warnings have been established for the tire size
equipped on your vehicle. Undesirable system
operation or sensor damage may result when us-
ing replacement equipment that is not of the same
size, type, and/or style. Aftermarket wheels can
cause sensor damage. Do not use aftermarket tire
sealants or balance beads if your vehicle is
equipped with a TPMS, as damage to the sensors
may result.
•After inspecting or adjusting the tire pressure,
always reinstall the valve stem cap. This will
prevent moisture and dirt from entering the valve
stem, which could damage the Tire Pressure Moni-
toring Sensor.
272 STARTING AND OPERATING

NOTE:
•The TPMS is not intended to replace normal tire care
and maintenance or to provide warning of a tire failure
or condition.
•The TPMS should not be used as a tire pressure gauge
while adjusting your tire pressure.
•Driving on a significantly under-inflated tire causes
the tire to overheat and can lead to tire failure.
Under-inflation also reduces fuel efficiency and tire
tread life, and may affect the vehicle’s handling and
stopping ability.
•The TPMS is not a substitute for proper tire mainte-
nance, and it is the driver ’s responsibility to maintain
correct tire pressure using an accurate tire gauge, even
if under-inflation has not reached the level to trigger
illumination of the Tire Pressure Monitoring Telltale
light.
•Seasonal temperature changes will affect tire pressure,
and the TPMS will monitor the actual tire pressure in
the tire.
Base System — If Equipped
This is the TPMS warning indicator located in the
instrument cluster.
The TPMS uses wireless technology with wheel rim
mounted electronic sensors to monitor tire pressure lev-
els. Sensors, mounted to each wheel as part of the valve
stem, transmit tire pressure readings to the Receiver
Module.
NOTE:It is particularly important for you to check the
tire pressure in all of the tires on your vehicle regularly
and to maintain the proper pressure.
STARTING AND OPERATING 273
5