2013 JEEP GRAND CHEROKEE engine overheat

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).
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.
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.
WARNING!
•Do not use a chain for freeing a stuck vehicle.
Chains may break, causing serious injury or death.
•Stand clear of vehicles when pulling with tow
hooks. Tow straps may become disengaged, caus-
ing serious injury.6
WHAT TO DO IN EMERGENCIES 599

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.
7
MAINTAINING YOUR VEHICLE 625

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.
626 MAINTAINING YOUR VEHICLE

Please note that it is the owner’s responsibility to main-
tain the proper level of protection against freezing ac-
cording to the temperatures occurring in the area where
the vehicle is operated.
NOTE:Mixing engine coolant (antifreeze) types is not
recommended and can result in cooling system damage.
Drain, flush, and refill as soon as possible to avoid
damage if coolant types are mixed in an emergency.
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 en-
gine is overheated. Do not loosen or remove the cap to
cool an overheated engine. Heat causes pressure 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.
•Do not use a pressure cap other than the one specified
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
630 MAINTAINING YOUR VEHICLE

Electric Rear Window Defrost.................294
Electric Remote Mirrors.....................125
Electronic Brake Control System...............494
Brake Assist System.....................495
Electronic Roll Mitigation (ERM)..............496
Electronic Speed Control (Cruise Control)........215
Electronic Stability Control (ESC)..............497
Electronic Vehicle Information Center (EVIC)......306
Emergency, In Case of
Freeing Vehicle When Stuck...............597
Hazard Warning Flasher..................582
Jump Starting.........................593
Tow Hooks...........................599
Emission Control System Maintenance..........610
Engine
Air Cleaner...........................616
Block Heater..........................445
Break-In Recommendations................108
Compartment.........................607Compartment Identification...............607
Cooling..............................627
Exhaust Gas Caution.....................50
Fails to Start..........................443
Flooded, Starting.......................443
Fuel Requirements......................541
Jump Starting.........................593
Oil .................................613
Oil Filler Cap.........................615
Oil Selection..........................614
Oil Synthetic..........................615
Overheating..........................582
Starting..............................439
Temperature Gauge.....................312
Engine Oil Viscosity.......................615
Engine Oil Viscosity Chart...................615
Enhanced Accident Response Feature............79
Entry System, Illuminated....................23
Ethanol................................542
686 INDEX

Off-Road Driving (Off-Pavement)..............482
Oil Change Indicator.......................328
Oil Change Indicator, Reset..................328
Oil, Engine..............................613
Capacity.............................659
Change Interval........................614
Dipstick.............................613
Disposal.............................616
Filter...............................616
Filter Disposal.........................616
Identification Logo......................614
Materials Added to.....................615
Recommendation.......................614
Synthetic.............................615
Viscosity.............................615
Oil Filter, Selection........................616
Onboard Diagnostic System..................609
Opener, Garage Door (HomeLink®)............260Operating Precautions......................609
Operator Manual (Owner’s Manual).............6
Outside Rearview Mirrors...................124
Overdrive...............................456
Overdrive OFF Switch......................456
Overhead Console.........................258
Overheating, Engine.......................312
Owner’s Manual (Operator Manual).............6
Paint Care..............................640
Panic Alarm..............................26
Parking Brake............................491
Park Sense System, Rear....................246
Passing Light............................206
Personal Settings..........................338
Pets...................................108
Pets, Transporting.........................108
Placard, Tire and Loading Information.........
.514
10
INDEX 693