2017 JEEP CHEROKEE engine overheat

JUMP-STARTING PROCEDURES ............431
▫ Preparations For Jump-Start ...............432
▫ Jump Starting Procedure ..................433
 REFUELLING IN EMERGENCY .............435
▫ Emergency Fuel Filler Door Release ..........435
 IF YOUR ENGINE OVERHEATS .............436
 GEAR SELECTOR OVERRIDE ..............437
 FREEING A STUCK VEHICLE ..............437
TOWING A DISABLED VEHICLE ............439
▫ Front-Wheel Drive (FWD) Models ...........441
▫ 4x4 Models With 1–Speed Power Transfer Unit . .441
▫ 4x4 Models With 2–Speed Power Transfer Unit . .442
▫ Recovery Strap — If Equipped .............443
 ENHANCED ACCIDENT RESPONSE SYSTEM
(EARS) .............................. .444
 EVENT DATA RECORDER (EDR) ............444
390 IN CASE OF EMERGENCY

IF YOUR ENGINE OVERHEATS
In any of the following situations, you can reduce the
potential for overheating your engine by taking the appro-
priate action.
•On the highways — slow down.
• In city traffic — while stopped, put transmission in
NEUTRAL, but do not increase engine idle speed.
CAUTION!
Driving with a hot cooling system could damage your
vehicle. If the temperature gauge reads “H,” pull over
and stop the vehicle. Idle the vehicle with the air
conditioner turned off until the pointer drops back
into the normal range. If the pointer remains on the
“H” and you hear continuous chimes, turn the engine
off immediately and call for service. NOTE:
There are steps that you can take to slow down an
impending overheat condition:
• If your air conditioner (A/C) is on, turn it off. The A/C
system adds heat to the engine cooling system and
turning the A/C off can help remove this heat.
• You can also turn the temperature control to maximum
heat, the mode control to floor and the blower control to
high. This allows the heater core to act as a supplement
to the radiator and aids in removing heat from the
engine cooling system.
WARNING!
You or others can be badly burned by hot engine
coolant (antifreeze) or steam from your radiator. If you
see or hear steam coming from under the hood, do not
open the hood until the radiator has had time to cool.
Never try to open a cooling system pressure cap when
the radiator or coolant bottle is hot.
436 IN CASE OF EMERGENCY

WARNING!
Fast spinning tires can be dangerous. Forces generated
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 vehicle’s wheels
faster than 30 mph (48 km/h) or for longer than 30
seconds continuously without stopping when you are
stuck and do not let anyone near a spinning wheel, no
matter what the speed.
NOTE: Push 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 System” in “Safety” for further information.
Once the vehicle has been freed, push the ESC Offswitch
again to restore “ESC On” mode.
CAUTION!
• Racing the engine or spinning the wheels may lead
to transmission overheating and failure. Allow the
engine 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 pro-
longed efforts to free a stuck vehicle.
• When “rocking” a stuck vehicle by shifting between
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 transmis-
sion shifting occurring).
438 IN CASE OF EMERGENCY

CAUTION!
•The catalytic converter requires the use of unleaded
fuel only. Leaded gasoline will destroy the effective-
ness of the catalyst as an emissions control device
and may seriously reduce engine performance 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 involv-
ing engine misfire or other apparent loss of perfor-
mance, have your vehicle serviced promptly. Contin-
ued operation of your vehicle with a severe
malfunction could cause the converter to overheat,
resulting in possible damage to the converter and
vehicle.
Under normal operating conditions, the catalytic converter
will not require maintenance. However, it is important to
keep the engine properly tuned to assure proper catalyst
operation and prevent possible catalyst damage. NOTE:
Intentional tampering with emissions control sys-
tems 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 specifications,
should be obtained immediately.
To minimize the possibility of catalytic converter damage:
• 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.
8
SERVICING AND MAINTENANCE 473

•Use only high purity water such as distilled or deionized
water when mixing the water/engine coolant (anti-
freeze) solution. The use of lower quality water will
reduce the amount of corrosion protection in the engine
cooling system.
Please note that it is the owner’s responsibility to maintain
the proper level of protection against freezing according to
the temperatures occurring in the area where the vehicle is
operated.
NOTE:
• Some vehicles require special tools to add coolant prop-
erly. Failure to fill these systems properly could lead to
severe internal engine damage. If any coolant is needed
to be added to the system, please contact your local
authorized dealer.
•
Mixing engine coolant (antifreeze) types is not recom-
mended and can result in cooling system damage. If
HOAT and OAT coolant are mixed in an emergency, have
a authorized dealer drain, flush, and refill with OAT
coolant (conforming to MS.90032) as soon as possible.
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!
• Do not open hot engine cooling system. Never add
engine coolant (antifreeze) when the engine is over-
heated. 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 speci-
fied for your vehicle. Personal injury or engine
damage may result.
476 SERVICING AND MAINTENANCE

Fuel System Cautions
CAUTION!
Follow these guidelines to maintain your vehicle’s
performance:
•The use of leaded gasoline is prohibited by Federal
law. Using leaded gasoline can impair engine perfor-
mance and damage the emissions control system.
• An out-of-tune engine or certain fuel or ignition
malfunctions can cause the catalytic converter to
overheat. If you notice a pungent burning odor or
some light smoke, your engine may be out of tune or
malfunctioning and may require immediate service.
Contact your authorized dealer for service assistance.
• The use of fuel additives, which are now being sold
as octane enhancers, is not recommended. Most of
these products contain high concentrations of metha-
nol. Fuel system damage or vehicle performance
problems resulting from the use of such fuels or
additives is not the responsibility of the manufac-
turer and may void or not be covered under the New
Vehicle Limited Warranty. NOTE:
Intentional tampering with the emissions control
system can result in civil penalties being assessed against
you.Carbon Monoxide Warnings
WARNING!
Carbon monoxide (CO) in exhaust gases is deadly.
Follow the precautions below to prevent carbon mon-
oxide poisoning:
• Do not inhale exhaust gases. They contain carbon
monoxide, a colorless and odorless gas, which can
kill. Never run the engine in a closed area, such as a
garage, and never sit in a parked vehicle with the
engine running for an extended period. If the vehicle
is stopped in an open area with the engine running
for more than a short period, adjust the ventilation
system to force fresh, outside air into the vehicle.
• Guard against carbon monoxide with proper main-
tenance. Have the exhaust system inspected every
time the vehicle is raised. Have any abnormal condi-
tions repaired promptly. Until repaired, drive with
all side windows fully open.
9
TECHNICAL SPECIFICATIONS 517

Disabled Vehicle Towing.....................439
Disposal Antifreeze (Engine Coolant) .................477
Do Not Disturb ........................... .589
Door Ajar ............................... .149
Door Ajar Light ........................... .149
Door Opener, Garage ....................... .108
Driver’s Seat Back Tilt ........................45
Driving ................................. .385
E-85 Fuel ............................... .518
Electrical Outlet, Auxiliary (Power Outlet) .........119
Electric Parking Brake ...................... .264
Electronic Brake Control System ................169
Anti-Lock Brake System ....................168
Electronic Roll Mitigation ...................177
Traction Control System ....................173
Electronic Range Select (ERS)..................276
Electronic Speed Control (Cruise Control) ......290, 293
Electronic Stability Control (ESC) ...............173
Electronic Throttle Control Warning Light .........148
Electronic Vehicle Information Center (EVIC) .......363
Emergency, In Case Of Hazard Warning Flasher ...................391
Jacking ........................... .414, 481Jump Starting
.......................... .431
Overheating ........................... .436
Emission Control System Maintenance ............164
Engine .............................. .451, 452
Air Cleaner ............................ .457
Block Heater ........................... .263
Break-In Recommendations .................264
Checking Oil Level ...................... .453
Cooling .............................. .474
Exhaust Gas Caution ...................252, 517
Fails To Start ........................... .262
Flooded, Starting ........................ .262
Jump

Starting .......................... .431
Oil .............................. .455, 521
Oil Filler Cap .....................451, 452, 456
Oil Filter .............................. .457
Oil Selection ........................ .455, 521
Oil Synthetic ........................... .457
Overheating ........................... .436
Engine Oil Viscosity ........................ .456
Engine Oil Viscosity Chart ....................456
Enhanced Accident Response Feature .........233, 444
Ethanol ............................. .515, 518
Exhaust Gas Caution .....................252, 517
Exhaust System ....................... .252, 472
12
INDEX 601

Capacity.............................. .521
Change Interval ........................ .455
Checking ............................. .453
Dipstick .............................. .453
Disposal .............................. .457
Filter ................................ .457
Filter Disposal .......................... .457
Identification Logo ...................... .456
Materials Added To ...................... .457
Pressure Warning Light ....................146
Recommendation .....................455, 521
Synthetic ............................. .457
Viscosity .......................... .456, 521
Oil Filter, Change ......................... .457
Oil Filter, Selection ......................... .457
Oil Pressure Light ......................... .146
Onboard Diagnostic System ...................163
Opener, Garage Door (HomeLink) ...............108
Operating Precautions ...................... .163
Operator Manual (Owner’s Manual) ...............5
Outside Rearview Mirrors .....................60
Overheating, Engine ....................... .436
Owner’s Manual (Operator Manual) ...........5,596Paint Care
............................... .505
Parking Brake ............................ .264
ParkSense System, Rear ...................314, 321
Personalized Menu Bar ..................... .527
Pets ................................... .251
Placard, Tire And Loading Information ...........485
Power Brakes ............................... .512
Door Locks ..............................37
Inverter .............................. .122
Lift Gate .............................. .105
Outlet (Auxiliary Electrical Outlet) ............119
Sunroof ................................97
Windows ...............................95
Pr

egnant Women And Seat Belts ................210
Preparation For Jacking ..................... .416
Pretensioners Seat Belts ..............................211
Radial Ply Tires ........................... .491
Radiator Cap (Coolant Pressure Cap) .............476
Radio Frequency General Information ................25, 32, 34, 41
Radio Operation .......................... .569
Radio Remote Controls ..................... .567
606 INDEX