2012 JEEP GRAND CHEROKEE sensor

▫Seat Belt Pretensioners................. 60
▫Supplemental Active Head Restraints (AHR) . . 60
▫Enhanced Seat Belt Use Reminder System
(BeltAlert) ......................... 64
▫Seat Belt Lock Out.................... 66
▫Seat Belts And Pregnant Women.......... 66
▫Seat Belt Extender..................... 66
▫Supplemental Restraint System (SRS) — Air
Bags.............................. 67
▫Advanced Front Air Bag Features.......... 69
▫Air Bag Deployment Sensors And Controls . . . 73▫Event Data Recorder (EDR).............. 81
▫Child Restraints...................... 82
Engine Break-In Recommendations.......... 94
Safety Tips........................... 95
▫Transporting Passengers................ 95
▫Exhaust Gas......................... 96
▫Safety Checks You Should Make Inside The
Vehicle ............................. 97
▫Periodic Safety Checks You Should Make
Outside The Vehicle................... 99
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THINGS TO KNOW BEFORE STARTING YOUR VEHICLE 11

WARNING!
During power operation, personal injury or cargo
damage may occur. Ensure the liftgate travel path is
clear. Make sure the liftgate is closed and latched
before driving away.
•The power liftgate will not operate if the liftgate
flipper glass is open.
•The power liftgate buttons will not operate if the
vehicle is in gear or the vehicle speed is above 0 mph
(0 km/h).
•The power liftgate will not operate in temperatures
below22°F (30°C) or temperatures above 150°F
(65°C). Be sure to remove any buildup of snow or ice
from the liftgate before pressing any of the power
liftgate switches.
•If anything obstructs the power liftgate while it is
closing or opening, the liftgate will automatically
reverse to the closed or open position, provided it
meets sufficient resistance.
•There are also pinch sensors attached to the side of the
liftgate. Light pressure anywhere along these strips
will cause the liftgate to return to the open position.
•The power liftgate must be in the full open position for
rear liftgate close button or overhead console close
button to operate. If the liftgate is not fully open, press
the Liftgate button on the Key Fob to fully open the
liftgate, and then press it again to close.
•If the liftgate handle is pulled while the power liftgate
is closing, the liftgate will reverse to the full open
position.
46 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE

The Advanced Front Air Bags have a multistage inflator
design. This allows the air bag to have different rates of
inflation based on the severity and type of collision.
This vehicle may be equipped with driver and/or front
passenger seat track position sensors that may adjust the
inflation rate of the Advanced Front Air Bags based upon
seat position.
This vehicle may be equipped with a driver and/or front
passenger seat belt buckle switch that detects whether
the driver or front passenger seat belt is fastened. The
seat belt buckle switch may adjust the inflation rate of the
Advanced Front Air Bags.
This vehicle is equipped with Supplemental Side Air Bag
Inflatable Curtains (SABIC) to protect the driver, front,
and rear passengers sitting next to a window. The SABIC
air bags, are located above the side windows and their
covers are also labeled: SRS AIRBAG.This vehicle is equipped with Supplemental Seat-
Mounted Side Air Bags (SAB) to provide enhanced
protection for an occupant during a side impact. The
Supplemental Seat-Mounted Side Air Bags are located in
the outboard side of the front seats.
NOTE:
•Air Bag covers may not be obvious in the interior trim,
but they will open during air bag deployment.
•After any accident, the vehicle should be taken to an
authorized dealer immediately.
Air Bag System Components
Your vehicle may be equipped with the following air bag
system components:
•Occupant Restraint Controller (ORC)
•Air Bag Warning Light
•Steering Wheel and Column
68 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE

•Instrument Panel
•Knee Impact Bolster
•Driver Advanced Front Air Bag
•Passenger Advanced Front Air Bag
•Supplemental Seat-Mounted Side Air Bags (SAB)
•Supplemental Side Air Bag Inflatable Curtains
(SABIC)
•Front and Side Impact Sensors
•Front Seat Belt Pretensioners, Seat Belt Buckle Switch,
and Seat Track Position Sensors
•Supplemental Active Head Restraint for Driver and
Front Passenger
Advanced Front Air Bag Features
The Advanced Front Air Bag system has multistage
driver and front passenger air bags. This system providesoutput appropriate to the severity and type of collision as
determined by the Occupant Restraint Controller (ORC),
which may receive information from the front impact
sensors.
The first stage inflator is triggered immediately during an
impact that requires air bag deployment. This low output
is used in less severe collisions. A higher energy output is
used for more severe collisions.
WARNING!
•No objects should be placed over or near the air
bag on the instrument panel, because any such
objects could cause harm if the vehicle is in a
collision severe enough to cause the air bag to
inflate.
(Continued)
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THINGS TO KNOW BEFORE STARTING YOUR VEHICLE 69

NOTE:
•Air Bag covers may not be obvious in the interior trim,
but they will open during air bag deployment.
•Being too close to the SAB and SABIC air bags during
deployment could cause you to be severely injured or
killed.
•Should a vehicle rollover occur, the pretensioners
and/or SAB and SABIC air bags on both sides of the
vehicle may deploy.
The system includes side impact sensors that are cali-
brated to deploy the Supplemental Seat-Mounted Side
Air Bags and SABIC air bags during impacts that require
side air bag occupant protection.
WARNING!
•If your vehicle is equipped with left and right
Supplemental Side Air Bag Inflatable Curtain
(SABIC), do not stack luggage or other cargo up
high enough to block the location of the SABIC.
The area where the SABIC is located should re-
main free from any obstructions.
•Do not use accessory seat covers or place objects
between you and the side air bags; the perfor-
mance could be adversely affected and/or objects
could be pushed into you, causing serious injury.
72 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE

WARNING! (Continued)
•If your vehicle is equipped with SABIC air bags,
do not have any accessory items installed which
will alter the roof, including adding a sunroof to
your vehicle. Do not add roof racks that require
permanent attachments (bolts or screws) for instal-
lation on the vehicle roof. Do not drill into the roof
of the vehicle for any reason.
Knee Impact Bolsters
The Knee Impact Bolsters help protect the knees of the
driver and the front passenger, and position front occu-
pants for the best interaction with the Advanced Front
Air Bags.Along with seat belts and pretensioners, Advanced Front
Air Bags work with the knee bolsters to provide im-
proved protection for the driver and front passenger. Side
air bags also work with seat belts to improve occupant
protection.
Air Bag Deployment Sensors And Controls
Occupant Restraint Controller (ORC)
TheORCis part of a Federally regulated safety system
required for this vehicle.
The ORC determines if deployment of the front and/or
side air bags in a frontal or side collision is required.
Based on the impact sensor’s signals, a central electronic
ORC deploys the Advanced Front Air Bags, SABIC air
bags, SAB air bags, and front seat belt pretensioners, as
required, depending on the severity and type of impact.
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THINGS TO KNOW BEFORE STARTING YOUR VEHICLE 73

Advanced Front Air Bags are designed to provide addi-
tional protection by supplementing the seat belts in
certain frontal collisions depending on the severity and
type of collision. Advanced Front Air Bags are not
expected to reduce the risk of injury in rear, side, or
rollover collisions.
The Advanced Front Air Bags will not deploy in all
frontal collisions, including some that may produce sub-
stantial vehicle damage — for example, some pole colli-
sions, truck underrides, and angle offset collisions. On
the other hand, depending on the type and location of
impact, Advanced Front Air Bags may deploy in crashes
with little vehicle front-end damage but that produce a
severe initial deceleration.
The side air bags will not deploy in all side collisions.
Side air bag deployment will depend on the severity and
type of collision.Because air bag sensors measure vehicle deceleration
over time, vehicle speed and damage by themselves are
not good indicators of whether or not an air bag should
have deployed.
Seat belts are necessary for your protection in all acci-
dents, and also are needed to help keep you in position,
away from an inflating air bag.
The ORC monitors the readiness of the electronic parts of
the air bag system whenever the ignition switch is in the
START or ON/RUN position. If the key is in the OFF
position, in the ACC position, or not in the ignition, the
air bag system is not on and the air bags will not inflate.
The ORC contains a backup power supply system that
may deploy the air bags even if the battery loses power or
it becomes disconnected prior to deployment.
74 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE

A quantity of non-toxic gas is generated to inflate the
SABIC. The inflating SABIC pushes the outside edge of
the headliner out of the way and covers the window. The
SABIC inflates in about 30 milliseconds (about one-
quarter of the time that it takes to blink your eyes) with
enough force to injure you if you are not belted and
seated properly, or if items are positioned in the area
where the SABIC inflates. This especially applies to
children. The SABIC is only about 3-1/2 in (9 cm) thick
when it is inflated.
Because air bag sensors estimate deceleration over time,
vehicle speed and damage are not good indicators of
whether or not an air bag should have deployed.
NOTE:In a rollover the pretensioners and/or SAB and
SABIC air bags may deploy on both sides of the vehicle.Front And Side Impact Sensors
In front and side impacts, front and side impact sensors
can aid the ORC in determining the appropriate response
to certain impact events.
Enhanced Accident Response System
In the event of an impact causing air bag deployment, if
the communication network remains intact, and the
power remains intact, depending on the nature of the
event the ORC will determine whether to have the
Enhanced Accident Response System perform the follow-
ing functions:
•Cut off fuel to the engine.
•Flash hazard lights as long as the battery has power or
until the ignition key is turned off.
•Turn on the interior lights, which remain on as long as
the battery has power or until the ignition key is
removed.
•Unlock the doors automatically.
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