2014 JEEP GRAND CHEROKEE engine overheat

FREEING A STUCK VEHICLE
If your vehicle becomes stuck in mud, sand or snow, it
can often be moved using a rocking motion. Turn the
steering wheel right and left to clear the area around the
front wheels. Then shift back and forth between DRIVE
and REVERSE while gently pressing the accelerator.
NOTE:Shifts between DRIVE and REVERSE can only be
achieved at wheel speeds of 5 mph (8 km/h) or less.
Whenever the transmission remains in NEUTRAL for
more than two seconds, you must press the brake pedal
to engage DRIVE or REVERSE.
Use the least amount of accelerator pedal pressure that
will maintain the rocking motion without spinning the
wheels or racing the engine. NOTE:
Press the ESC Off switch (if necessary), to
place the Electronic Stability Control (ESC) system in
Partial Off mode, before rocking the vehicle. Refer to
“Electronic Brake Control” in “Starting And Operating”
for further information. Once the vehicle has been freed,
press the ESC Off switch again to restore ESC On
mode.
CAUTION!
Racing the engine or spinning the wheels may lead to
transmission overheating and failure. Allow the en-
gine to idle with the transmission in NEUTRAL for at
least one minute after every five rocking-motion
cycles. This will minimize overheating and reduce
the risk of transmission failure during prolonged
efforts to free a stuck vehicle.
6
WHAT TO DO IN EMERGENCIES 503

WARNING!
Fast spinning tires can be dangerous. Forces gener-
ated by excessive wheel speeds may cause damage, or
even failure, of the axle and tires. A tire could
explode and injure someone. Do not spin your vehi-
cle’s wheels faster than 30 mph (48 km/h) or for
longer than 30 seconds continuously without stop-
ping when you are stuck and do not let anyone near
a spinning wheel, no matter what the speed.
CAUTION!
•When “rocking” a stuck vehicle by shifting be-
tween DRIVE and REVERSE, do not spin the
wheels faster than 15 mph (24 km/h), or drivetrain
damage may result.
(Continued)
CAUTION! (Continued)
•Revving the engine or spinning the wheels too fast
may lead to transmission overheating and failure.
It can also damage the tires. Do not spin the wheels
above 30 mph (48 km/h) while in gear (no trans-
mission shifting occurring).
EMERGENCY TOW HOOKS — IF EQUIPPED
If your vehicle is equipped with tow hooks, there will be
one in the rear and two mounted on the front of the
vehicle. The rear hook will be located on the driver’s side
of the vehicle.
NOTE: For off-road recovery, it is recommended to use
both of the front tow hooks to minimize the risk of
damage to the vehicle.
504 WHAT TO DO IN EMERGENCIES

WARNING!
•Exhaust gases can injure or kill. They contain
carbon monoxide (CO), which is colorless and
odorless. Breathing it can make you unconscious
and can eventually poison you. To avoid breathing
CO, refer to “Safety Tips/Exhaust Gas” in “Things
To Know Before Starting Your Vehicle” for further
information.
• A hot exhaust system can start a fire if you park
over materials that can burn. Such materials might
be grass or leaves coming into contact with your
exhaust system. Do not park or operate your ve-
hicle in areas where your exhaust system can con-
tact anything that can burn.
CAUTION!
• The catalytic converter requires the use of un-
leaded fuel only. Leaded gasoline will destroy the
effectiveness of the catalyst as an emissions control
device and may seriously reduce engine perfor-
mance and cause serious damage to the engine.
• Damage to the catalytic converter can result if your
vehicle is not kept in proper operating condition.
In the event of engine malfunction, particularly
involving engine misfire or other apparent loss of
performance, have your vehicle serviced promptly.
Continued operation of your vehicle with a severe
malfunction could cause the converter to overheat,
resulting in possible damage to the converter and
vehicle.
528 MAINTAINING YOUR VEHICLE

Under normal operating conditions, the catalytic con-
verter will not require maintenance. However, it is im-
portant to keep the engine properly tuned to assure
proper catalyst operation and prevent possible catalyst
damage.
NOTE:Intentional tampering with emissions control
systems can result in civil penalties being assessed
against you.
In unusual situations involving grossly malfunctioning
engine operation, a scorching odor may suggest severe
and abnormal catalyst overheating. If this occurs, stop
the vehicle, turn off the engine and allow it to cool.
Service, including a tune-up to manufacturer’s specifica-
tions, should be obtained immediately. To minimize the possibility of catalytic converter dam-
age:
•
Do not shut off the engine or interrupt the ignition,
when the transmission is in gear and the vehicle is in
motion.
• Do not try to start the engine by pushing or towing the
vehicle.
• Do not idle the engine with any spark plug wires
disconnected or removed, such as when diagnostic
testing, or for prolonged periods during very rough
idle or malfunctioning operating conditions.
7
MAINTAINING YOUR VEHICLE 529

Cooling System Pressure Cap
The cap must be fully tightened to prevent loss of engine
coolant (antifreeze), and to ensure that engine coolant
(antifreeze) will return to the radiator from the coolant
recovery tank.
The cap should be inspected and cleaned if there is any
accumulation of foreign material on the sealing surfaces.
WARNING!
•The warning words “DO NOT OPEN HOT” on the
cooling system pressure cap are a safety precaution.
Never add engine coolant (antifreeze) when the
engine is overheated. Do not loosen or remove the
cap to cool an overheated engine. Heat causes pres-
sure to build up in the cooling system. To prevent
scalding or injury, do not remove the pressure cap
while the system is hot or under pressure.
(Continued)
WARNING! (Continued)
•Do not use a pressure cap other than the one speci-
fied for your vehicle. Personal injury or engine
damage may result.
Disposal Of Used Engine Coolant
Used ethylene glycol-based engine coolant (antifreeze) is
a regulated substance requiring proper disposal. Check
with your local authorities to determine the disposal
rules for your community. To prevent ingestion by ani-
mals or children, do not store ethylene glycol-based
engine coolant in open containers or allow it to remain in
puddles on the ground. If ingested by a child or pet, seek
emergency assistance immediately. Clean up any ground
spills immediately.
534 MAINTAINING YOUR VEHICLE

Oil..................................516
Oil Change Interval ..................... .516
Oil Filler Cap ......................... .518
Oil Selection .......................... .517
Oil Synthetic ......................... .518
Overheating .......................... .484
Starting ............................. .391
Temperature Gauge ..................... .299
Engine Oil Viscosity ...................... .518
Enhanced Accident Response Feature ............80
Entry System, Illuminated ....................22
Ethanol ............................... .460
Event Data Recorder ........................84
Exhaust Gas Caution ........................49
Exhaust System ...........................112
Exterior Lights ...........................116
FCC General Information (Remote Keyless Entry) . . .27
FCC General Information (Sentry Key) ...........19Filters
Air Cleaner .......................... .519
Air Conditioning ...................... .385
Engine Oil ........................... .519
Engine Oil Disposal .....................518
Flashers ............................... .484
Hazard Warning ....................... .484
Turn Signal ............................116
Flooded Engine Starting ....................395
Fluid Capacities ......................... .563
Fluid Leaks .............................116
Fluid Level Checks Brake ............................... .536
Cooling System ........................ .530
Engine Oil ........................... .516
Fluids, Lubricants and Genuine Parts ...........564
Fog Lights ............................. .297
Fog Light Service ........................ .559
Folding Rear Seat ........................ .162
600 INDEX

Monitor, Tire Pressure System................451
Mopar Parts ............................ .514
MTBE/ETBE ........................... .460
Multi-Function Control Lever .................171
New Vehicle Break-In Period .................111
Occupant Restraints ........................49
Occupant Restraints (Sedan) ..................72
Octane Rating, Gasoline (Fuel) ................459
Odometer .............................. .303
Trip ................................ .303
Oil, Engine ............................. .516
Capacity ............................ .563
Change Interval ....................... .516
Checking ............................ .516
Disposal ............................. .518
Filter ............................... .519
Filter Disposal ........................ .518Identification Logo
..................... .517
Materials Added to ..................... .518
Recommendation ...................... .517
Synthetic ............................ .518
Viscosity ............................ .518
Oil Filter, Selection ....................... .519
Older Children And Child Restraints ............89
Onboard Diagnostic System ..................512
Opener, Garage Door (HomeLink®) ............252
Operating Precautions ..................... .512
Operator Manual (Owner’s Manual) .............6
Outside Rearview Mirrors ...................131
Overhead Console ........................ .250
Overheating, Engine ...................... .299
Owner’s Manual (Operator Manual) .............6
Paint Care ............................. .542
Panic Alarm ..............................24
Parking Brake ........................... .415
10
INDEX 605