check engine JEEP GRAND CHEROKEE 2012 WK2 / 4.G Owners Manual

▫Seat Belt Pretensioners ................. 61
▫ Supplemental Active Head Restraints (AHR) . . 61
▫ Enhanced Seat Belt Use Reminder System
(BeltAlert) ......................... 65
▫ Seat Belt Lock Out .................... 66
▫ Seat Belts And Pregnant Women .......... 66
▫ Seat Belt Extender ..................... 66
▫ Supplemental Restraint System (SRS) — Air
Bags .............................. 66
▫ Advanced Front Air Bag Features .......... 69
▫ Air Bag Deployment Sensors And Controls . . . 72 ▫
Event Data Recorder (EDR) .............. 80
▫ Child Restraints ...................... 81
 Engine Break-In Recommendations .......... 93
 Safety Tips ........................... 94
▫ Transporting Passengers ................ 94
▫ Exhaust Gas ......................... 95
▫ Safety Checks You Should Make Inside The
Vehicle ............................. 96
▫ Periodic Safety Checks You Should Make
Outside The Vehicle ................... 98
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THINGS TO KNOW BEFORE STARTING YOUR VEHICLE 13

vehicle can be used to start and operate the vehicle. The
system will shut the engine off in two seconds if an
invalid Key Fob is used to start the engine.
After turning the ignition switch to the ON/RUN posi-
tion, the Vehicle Security Light will turn on for three
seconds for a bulb check. If the light remains on after the
bulb check, it indicates that there is a problem with the
electronics. In addition, if the light begins to flash after
the bulb check, it indicates that someone used an invalid
Key Fob to start the engine. Either of these conditions will
result in the engine being shut off after two seconds.
If the Vehicle Security Light turns on during normal
vehicle operation (vehicle running for longer than 10 sec-
onds), it indicates that there is a fault in the electronics.
Should this occur, have the vehicle serviced as soon as
possible by an authorized dealer.CAUTION!
The Sentry KeyImmobilizer system is not compat-
ible with some after-market remote starting systems.
Use of these systems may result in vehicle starting
problems and loss of security protection.
All of the Key Fobs provided with your new vehicle have
been programmed to the vehicle electronics.
Replacement Keys
NOTE: Only Key Fobs that are programmed to the
vehicle electronics can be used to start and operate the
vehicle. Once a Key Fob is programmed to a vehicle, it
cannot be programmed to any other vehicle.
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THINGS TO KNOW BEFORE STARTING YOUR VEHICLE 19

4. To assemble the RKE transmitter case, snap the two
halves together.
General Information
This device complies with part 15 of the FCC rules and
RSS 210 of Industry Canada. Operation is subject to the
following conditions:
•This device may not cause harmful interference.
•This device must accept any interference received,
including interference that may cause undesired
operation.
NOTE: Changes or modifications not expressly ap-
proved by the party responsible for compliance could
void the user’s authority to operate the equipment. If your RKE transmitter fails to operate from a normal
distance, check for these two conditions:
1. A weak battery in the RKE transmitter. The expected
life of the battery is a minimum of three years.
2. Closeness to a radio transmitter such as a radio station
tower, airport transmitter, and some mobile or CB radios.REMOTE STARTING SYSTEM — IF EQUIPPED
This system uses the Remote Keyless Entry
(RKE) transmitter to start the engine conve-
niently from outside the vehicle while still
maintaining security. The system has a range of
approximately 300 ft (91 m).
NOTE:
•The vehicle must be equipped with an automatic
transmission to be equipped with Remote Start.
•Obstructions between the vehicle and RKE transmitter
may reduce this range.
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THINGS TO KNOW BEFORE STARTING YOUR VEHICLE 29

NOTE:If the speedometer, tachometer, or any engine
related gauges are not working, the Occupant Restraint
Controller (ORC) may also be disabled. The air bags may
not be ready to inflate for your protection. Promptly
check the fuse block for blown fuses. Refer to the label
located on the inside of the fuse block cover for the
proper air bag fuses. See your authorized dealer if the
fuse is good.
Event Data Recorder (EDR)
This vehicle is equipped with an event data recorder
(EDR). The main purpose of an EDR is to record, in
certain crash or near crash-like situations, such as an air
bag deployment or hitting a road obstacle, data that will
assist in understanding how a vehicle’s systems per-
formed. The EDR is designed to record data related to
vehicle dynamics and safety systems for a short period of
time, typically 30 seconds or less. The EDR in this vehicle
is designed to record such data as:
•How various systems in your vehicle were operating;
•Whether or not the driver and passenger safety belts
were buckled/fastened;
•How far (if at all) the driver was depressing the
accelerator and/or brake pedal; and,
•How fast the vehicle was traveling.
These data can help provide a better understanding of
the circumstances in which crashes and injuries occur.
NOTE: EDR data are recorded by your vehicle only if a
non-trivial crash situation occurs; no data are recorded by
the EDR under normal driving conditions and no per-
sonal data (e.g., name, gender, age, and crash location)
are recorded. However, other parties, such as law en-
forcement, could combine the EDR data with the type of
personally identifying data routinely acquired during a
crash investigation.
80 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE

Periodic Safety Checks You Should Make Outside
The Vehicle
Tires
Examine tires for excessive tread wear and uneven wear
patterns. Check for stones, nails, glass, or other objects
lodged in the tread or sidewall. Inspect the tread for cuts
and cracks. Inspect sidewalls for cuts, cracks and bulges.
Check the wheel nuts for tightness. Check the tires
(including spare) for proper cold inflation pressure.
Lights
Have someone observe the operation of exterior lights
while you work the controls. Check turn signal and high
beam indicator lights on the instrument panel.
Door Latches
Check for positive closing, latching, and locking.
Fluid Leaks
Check area under vehicle after overnight parking for fuel,
engine coolant, oil, or other fluid leaks. Also, if gasoline
fumes are detected or if fuel, power steering fluid, or
brake fluid leaks are suspected, the cause should be
located and corrected immediately.
98 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE

INSTRUMENT CLUSTER DESCRIPTIONS
1. Tachometer
Indicates the engine speed in revolutions per minute
(RPM x 1000).
2. Air Bag Warning LightThis light will turn on for four to eight seconds
as a bulb check when the ignition switch is first
turned to the ON/RUN position. If the light is
either not on during starting, stays on, or turns
on while driving, have the system inspected at an autho-
rized dealer as soon as possible. Refer to “Occupant
Restraints” in “Things To Know Before Starting Your
Vehicle” for further information.
3. Malfunction Indicator Light (MIL) The Malfunction Indicator Light (MIL) is part of
an onboard diagnostic system called OBD II that
monitors engine and automatic transmission con-
trol systems. The light will illuminate when the key is in the ON/RUN position before engine start. If the bulb
does not come on when turning the key from OFF to
ON/RUN, have the condition checked promptly.
Certain conditions, such as a loose or missing gas cap,
poor fuel quality, etc., may illuminate the light after
engine start. The vehicle should be serviced if the light
stays on through several of your typical driving cycles. In
most situations, the vehicle will drive normally and will
not require towing.
CAUTION!
Prolonged driving with the MIL on could cause
damage to the engine control system. It also could
affect fuel economy and drivability. If the MIL is
flashing, severe catalytic converter damage and
power loss will soon occur. Immediate service is
required.
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UNDERSTANDING YOUR INSTRUMENT PANEL 285

•Oil Pressure Warning LightThis telltale indicates low engine oil pressure. If
the light turns on while driving, stop the vehicle
and shut off the engine as soon as possible. A chime will
sound for four minutes when this light turns on.
Do not operate the vehicle until the cause is corrected.
This light does not show how much oil is in the engine.
The engine oil level must be checked under the hood.
•Charging System Light This light shows the status of the electrical charg-
ing system. If the light stays on or comes on while
driving, turn off some of the vehicle’s non-essential
electrical devices or increase engine speed (if at idle). If
the charging system light remains on, it means that the
vehicle is experiencing a problem with the charging
system. Obtain SERVICE IMMEDIATELY. See an autho-
rized dealer. If jump starting is required, refer to “Jump Starting
Procedures” in “What To Do In Emergencies”.
•Electronic Throttle Control (ETC) Light
This light informs you of a problem with the
Electronic Throttle Control (ETC) system. The
light will come on when the ignition is first
turned ON and remain on briefly as a bulb
check. If the light does not come on during starting, have
the system checked by an authorized dealer.
If a problem is detected, the light will come on while the
engine is running. Cycle the ignition key when the
vehicle has completely stopped and the shift lever is
placed in the PARK position. The light should turn off.
If the light remains lit with the engine running, your
vehicle will usually be drivable. However, see an autho-
rized dealer for service as soon as possible. If the light is
flashing when the engine is running, immediate service is
308 UNDERSTANDING YOUR INSTRUMENT PANEL

down until the preferred setting is highlighted, then
press and release the SELECT button until a check-mark
appears next to the setting, showing that the setting has
been selected.
Vehicle Info (Customer Information Features)
Press and release the UP or DOWN button until “Vehicle
Info” displays in the EVIC and press the SELECT button.
Press the UP and DOWN button to scroll through the
available information displays, then press SELECT to
display any one of the following choices.
•Coolant Temp
Displays the actual coolant temperature.
•Oil Temperature
Displays the actual oil temperature.
•Oil Pressure
Displays the actual oil pressure.
•Trans Temperature
Displays the actual transmission temperature.
•Engine Hours
Displays the number of hours of engine operation.
Tire PSI
Press and release the UP or DOWN button until “Tire
PSI” displays highlighted in the EVIC and press the
SELECT button. Press and release the UP/DOWN but-
tons until one of the following System Status messages
displays in the EVIC:
•System OK
•System Warnings Displayed (will display all currently
active System Warnings)
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UNDERSTANDING YOUR INSTRUMENT PANEL 315

Power Steering ....................... 459
▫ 3.6L Engine ........................ 459
▫ 5.7L Engine ........................ 460
▫ Power Steering Fluid Check ............. 461
 Multi-Displacement System (MDS)
(If Equipped) — 5.7L Engine Only .......... 462
 Parking Brake ........................ 462
 Electronic Brake Control System ........... 464
▫ Anti-Lock Brake System (ABS) ........... 464
▫ Traction Control System (TCS) ........... 465
▫ Brake Assist System (BAS) .............. 465
▫ Electronic Roll Mitigation (ERM) ......... 466
▫ Electronic Stability Control (ESC) ......... 467▫
Trailer Sway Control (TSC) ............. 470
▫ Hill Start Assist (HSA) ................ 471
▫ Ready Alert Braking – If Equipped ........ 473
▫ Rain Brake Support – If Equipped ........ 473
▫ Hill Descent Control (HDC) — Four-Wheel
Drive Models With MP3023 Two-Speed
Transfer Case Only ................... 474
▫ ESC Activation/Malfunction Indicator Light
And ESC Off Indicator Light ............ 476
 Tire Safety Information ................. 477
▫ Tire Markings ....................... 477
▫ Tire Identification Number (TIN) ......... 481
▫ Tire Terminology And Definitions ......... 482
▫ Tire Loading And Tire Pressure .......... 483
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STARTING AND OPERATING 409

PARK
This range supplements the parking brake by locking the
transmission. The engine can be started in this range.
Never attempt to use PARK while vehicle is in motion.
Apply the parking brake when leaving vehicle in this
range.
When parking on a level surface, you may place the shift
lever in the PARK position first, and then apply the
parking brake.
When parking on a hill, apply the parking brake before
placing the shift lever in PARK, otherwise the load on the
transmission locking mechanism may make it difficult to
move the shift lever out of PARK. As an added precau-
tion, turn the front wheels toward the curb on a downhill
grade and away from the curb on an uphill grade.WARNING!
•Never use the PARK position as a substitute for
the parking brake. Always apply the parking
brake fully when parked to guard against vehicle
movement and possible injury or damage.
•Your vehicle could move and injure you and others
if it is not completely in PARK. Check by trying to
move the shift lever rearward (with the brake
pedal released), after you have placed it in PARK.
Make sure the transmission is in PARK before
leaving the vehicle.(Continued)
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STARTING AND OPERATING 423