2013 JEEP GRAND CHEROKEE engine overheat

CAUTION!
Accessories that can be plugged into the vehicle
power outlets draw power from the vehicle’s battery,
even when not in use (i.e., cellular phones, etc.).
Eventually, if plugged in long enough, the vehicle’s
battery will discharge sufficiently to degrade battery
life and/or prevent the engine from starting.
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. 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, to place the Electronic
Stability Control (ESC) system in Partial Offmode,
before rocking the vehicle. Refer to “Electronic Brake
Control” in “Starting And Operating” for further infor-
mation. Once the vehicle has been freed, press the ESC
Off switch again to restore ESC Onmode.
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.
552 WHAT TO DO IN EMERGENCIES

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.
• 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
(Continued)
WARNING! (Continued)
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.
6
WHAT TO DO IN EMERGENCIES 553

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.
576 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 577

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
engine 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 en-
gine 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
7
MAINTAINING YOUR VEHICLE 581

Tow Hooks.......................... .553
Emission Control System Maintenance ..........561
Engine ................................ .559
Air Cleaner .......................... .567
Break-In Recommendations ................111
Checking Oil Level .....................564
Compartment ........................ .559
Coolant (Antifreeze) .....................578
Cooling ............................. .578
Exhaust Gas Caution .....................49
Fails to Start ......................... .451
Flooded, Starting ...................... .451
Fuel Requirements ..................... .513
Jump Starting ........................ .548
Oil ................................ .564
Oil Change Interval .....................565
Oil Filler Cap ........................ .566
Oil Selection ......................... .565
Oil Synthetic ......................... .566Overheating
......................... .536
Starting ............................. .447
Temperature Gauge .....................324
Engine Oil Viscosity ...................... .566
Enhanced Accident Response Feature ............81
Entry System, Illuminated ....................21
Ethanol ............................... .514
Event Data Recorder ........................84
Exhaust Gas Caution ........................49
Exhaust System ...........................113
Exterior Lights ...........................116
Filters Air Cleaner .......................... .567
Air Conditioning ...................... .570
Engine Oil ........................... .567
Engine Oil Disposal .....................566
Flashers ............................... .536
Hazard Warning ...................... .536
644 INDEX

Monitor, Tire Pressure System................505
Mopar Parts ............................ .562
MTBE/ETBE ........................... .514
Multi-Function Control Lever .................201
New Vehicle Break-In Period .................111
Occupant Restraints ........................50
Occupant Restraints (Sedan) ..................73
Octane Rating, Gasoline (Fuel) ................513
Odometer .............................. .318
Trip ............................... .318
Oil Change Indicator ...................... .341
Oil Change Indicator, Reset ..................341
Oil, Engine ............................. .564
Capacity ............................ .608
Change Interval ....................... .565
Checking ........................... .564
Disposal ............................ .566Filter
.............................. .567
Filter Disposal ........................ .566
Identification Logo ..................... .565
Materials Added to .....................566
Recommendation ...................... .565
Synthetic ............................ .566
Viscosity ............................ .566
Oil Filter, Selection ....................... .567
Onboard Diagnostic System ..................560
Opener, Garage Door (HomeLink) ............269
Operating Precautions ..................... .560
Operator Manual (Owner’s Manual) .............5
Outside Rearview Mirrors ...................126
Overdrive .............................. .462
Overdrive OFF Switch ..................... .462
Overhead Console ........................ .267
Overheating, Engine ...................... .324
Owner’s Manual (Operator Manual) .............5
650 INDEX