engine overheat JEEP CHEROKEE 2023 User Guide

150SAFETY
Disabling SSC
SSC will deactivate and be disabled if any of the following
conditions occur:
The driver pushes the SSC button.
 The driveline is shifted out of 4WD Low.
 The parking brake is applied.
 The driver door opens.
 The vehicle is driven greater than 20 mph (32 km/h)
for greater than 70 seconds.
 The vehicle is driven greater than 40 mph (64 km/h)
(SSC exits immediately).
Feedback To The Driver:
The instrument cluster has an SSC icon and the SSC
button has an LED which offers feedback to the driver
about the state SSC is in.
 The cluster icon and button lamp will illuminate and
remain on solid when SSC is enabled or activated. This
is the normal operating condition for SSC.
 The cluster icon and button lamp will flash for several
seconds then extinguish when the driver pushes the
SSC button but enable conditions are not met.
 The cluster icon and button lamp will flash for several
seconds then extinguish when SSC disables due to
excess speed.
 The cluster icon and button lamp will flash then extin -
guish when SSC deactivates due to overheated brakes.
Traction Control System (TCS)
The TCS monitors the amount of wheel spin of each of the
driven wheels. If wheel spin is detected, the TCS may apply
brake pressure to the spinning wheel(s) and/or reduce
engine power to provide enhanced acceleration and
stability. A feature of the TCS, Brake Limited Differential
(BLD) functions similarly to a limited slip differential and
controls the wheel spin across a driven axle. If one wheel
on a driven axle is spinning faster than the other, the
system will apply the brake of the spinning wheel. This will
allow more engine torque to be applied to the wheel that
is not spinning. BLD may remain enabled even if TCS and
Electronic Stability Control (ESC) are in reduced modes.
Trailer Sway Control (TSC)
TSC uses sensors in the vehicle to recognize an
excessively swaying trailer and will take the appropriate
actions to attempt to stop the sway.
NOTE:
TSC cannot stop all trailers from swaying. Always use
caution when towing a trailer and follow the trailer tongue
weight recommendations
Úpage 114.
When TSC is functioning, the ESC Activation/Malfunction
Indicator Light will flash, the engine power may be reduced
and you may feel the brakes being applied to individual wheels to attempt to stop the trailer from swaying. TSC is
disabled when the ESC system is in the “Partial Off” or
“Full Off” modes.
AUXILIARY DRIVING SYSTEMS
BLIND SPOT MONITORING (BSM) —
I
F EQUIPPED
BSM uses two radar sensors, located inside the rear
fascia/bumper, to detect highway licensable vehicles
(automobiles, trucks, motorcycles, etc.) that enter the
blind spot zones from the rear/front/side of the vehicle.

Rear Detection Zones

WARNING!
SSC is only intended to assist the driver in controlling
vehicle speed when driving in off road conditions. The
driver must remain attentive to the driving conditions
and is responsible for maintaining a safe vehicle speed.
WARNING!
If TSC activates while driving, slow the vehicle down,
stop at the nearest safe location, and adjust the trailer
load to eliminate trailer sway.

23_KL_OM_EN_USC_t.book Page 150

IN CASE OF EMERGENCY203
IF YOUR ENGINE OVERHEATS
If the vehicle is overheating, it will need to be serviced by
an authorized dealer.
Potential signs of vehicle overheating:
Temperature gauge is at HOT (H)
 Strong smell of coolant
 White smoke coming from engine or exhaust
 Coolant bottle coolant has bubbles present
In the event it is observed that the temperature gauge is
moving towards or close to the HOT (H) position, you can
reduce the potential for overheating by taking the
appropriate action.
 On the highways — slow down.
 In city traffic — while stopped, place the transmission in
NEUTRAL (N), but do not increase the engine idle speed
while preventing vehicle motion with the brakes. 
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 supple -
ment to the radiator and aids in removing heat from the
engine cooling system.
GEAR SELECTOR OVERRIDE
If a malfunction occurs and the gear selector cannot be
moved out of the PARK (P) position, you can use the
following procedure to temporarily move the gear selector:

1. Turn the engine OFF.

2. Apply the parking brake.
3. Using a screwdriver or similar tool, carefully separate the shifter bezel and boot assembly from the center
console, and raise it up to access the gear selector
mechanism.

Shifter Bezel/Boot

4. Press and maintain firm pressure on the brake pedal.
5. Insert a small screwdriver or similar tool down into the gear selector override access hole (at the right
front corner of the gear selector assembly), and push
and hold the override release lever down.

Override Access Hole

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.
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.
7

23_KL_OM_EN_USC_t.book Page 203

204IN CASE OF EMERGENCY
6. Move the gear selector to the NEUTRAL (N) position.
7. The vehicle may then be started in NEUTRAL (N).
8. Reinstall the gear selector boot.
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. Push and hold the lock button on the gear
selector. Then shift back and forth between DRIVE (D) and
REVERSE (R), while gently pressing the accelerator.
NOTE:Shifts between DRIVE (D) and REVERSE (R) can only be
achieved at wheel speeds of 5 mph (8 km/h) or less.
Whenever the transmission remains in NEUTRAL (N) for
more than two seconds, you must press the brake pedal
to engage DRIVE (D) or REVERSE (R). Use the least amount of accelerator pedal pressure that
will maintain the rocking motion without spinning the
wheels or racing the engine.NOTE:Push the ESC OFF button (if necessary), to place the Elec
-
tronic Stability Control (ESC) system in “Partial Off” mode,
before rocking the vehicle
Úpage 145. Once the vehicle
has been freed, push the ESC OFF button again to restore
“ESC On” mode.
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.
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 clutch or transmission failure during
prolonged 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).

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222SERVICING AND MAINTENANCE
(Continued)
(Continued)
3. Insert the wiper blade pivot pin into the opening on
the end of the wiper arm. Grab the bottom end of the
wiper arm with one hand, and apply pressure on the
wiper blade flush with the wiper arm until it snaps into
place.
4. Lower the wiper blade onto the glass and snap the wiper arm pivot cap back into place.
EXHAUST SYSTEM
The best protection against carbon monoxide entry into
the vehicle body is a properly maintained engine exhaust
system.
If you notice a change in the sound of the exhaust system;
or if the exhaust fumes can be detected inside the vehicle;
or when the underside or rear of the vehicle is damaged;
have an authorized technician inspect the complete
exhaust system and adjacent body areas for broken,
damaged, deteriorated, or mispositioned parts. Open
seams or loose connections could permit exhaust fumes
to seep into the passenger compartment. In addition, have
the exhaust system inspected each time the vehicle is
raised for lubrication or oil change. Replace as required.
Under normal operating conditions, the catalytic converter
will not require maintenance. However, it is important to
keep the engine properly tuned to ensure 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 specifications,
should be obtained immediately.
To minimize the possibility of catalytic converter damage:
Do not interrupt the ignition when the transmission is
in gear and the vehicle is in motion.
 Do not try to start the vehicle by pushing or towing the
vehicle.
 Do not idle the engine with any ignition components
disconnected or removed, such as when diagnostic
testing, or for prolonged periods during very rough idle
or malfunctioning operating conditions.
COOLING SYSTEM
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 see
Úpage 186.
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 vehicle
in areas where your exhaust system can contact
anything that can burn.
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
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.
WARNING!
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 open a cooling system pressure cap
when the radiator or coolant bottle is hot.

23_KL_OM_EN_USC_t.book Page 222

224SERVICING AND MAINTENANCE
NOTE:
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.
 Use care when filling under hood fluids such as Engine
Oil, Windshield Washer Solvent, Antifreeze etc. to mini -
mize spillage onto top of engine. Any excess fluid that
is spilled onto the top of the engine should be removed
using compressed air or absorbent cloth.
 Some vehicles require special tools to add coolant
properly. 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 a
local authorized dealer.
 Mixing engine coolant types is not recommended and
can result in cooling system damage. If HOAT and OAT
coolant are mixed in an emergency, have an 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 will
return to the radiator from the coolant expansion bottle/
recovery tank (if equipped).
The cap should be inspected and cleaned if there is any
accumulation of foreign material on the sealing surfaces.
Disposal Of Used Coolant
Used ethylene glycol-based 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 animals or
children, do not store ethylene glycol-based coolant in
open containers or allow it to remain in puddles on the
ground, clean up any ground spills immediately. If
ingested, seek emergency assistance immediately.
Coolant Level
The coolant bottle provides a quick visual method for
determining that the coolant level is adequate. With the
engine off and cold, the level of the engine coolant
(antifreeze) in the bottle should be between the ranges
indicated on the bottle.
The radiator normally remains completely full, so there is
no need to remove the radiator/coolant pressure cap
unless checking for engine coolant freeze point or replacing coolant. Advise your service attendant of this. As
long as the engine operating temperature is satisfactory,
the coolant only needs to be checked once a month.
When additional engine coolant is needed to maintain the
proper level, only OAT coolant that meets the
requirements of the manufacturer Material Standard
MS.90032 should be added to the coolant bottle. Do not
overfill.
Cooling System Notes
NOTE:When the vehicle is stopped after a few miles/kilometers
of operation, you may observe vapor coming from the front
of the engine compartment. This is normally a result of
moisture from rain, snow, or high humidity accumulating
on the radiator and being vaporized when the thermostat
opens, allowing hot engine coolant (antifreeze) to enter
the radiator.
If an examination of your engine compartment shows no
evidence of radiator or hose leaks, the vehicle may be
safely driven. The vapor will soon dissipate.

Do not overfill the coolant expansion bottle.
 Check the coolant freeze point in the radiator and in
the coolant expansion bottle. If engine coolant needs
to be added, the contents of the coolant expansion
bottle must also be protected against freezing.
 If frequent engine coolant additions are required, the
cooling system should be pressure tested for leaks.
 Maintain engine coolant concentration at a minimum
of 50% OAT coolant (conforming to MS.90032) and
distilled water for proper corrosion protection of your
engine which contains aluminum components.
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.

23_KL_OM_EN_USC_t.book Page 224

TECHNICAL SPECIFICATIONS255
DO NOT USE E-85 IN NON-FLEX FUEL
V
EHICLES
Non-Flex Fuel Vehicles (FFV) are compatible with gasoline
containing up to 15% ethanol (E-15). Use of gasoline with
higher ethanol content may void the New Vehicle Limited
Warranty.
If a Non-FFV vehicle is inadvertently fueled with E-85 fuel,
the engine will have some or all of these symptoms:
 Operate in a lean mode.
 OBD II Malfunction Indicator Light on.
 Poor engine performance.
 Poor cold start and cold drivability.
 Increased risk for fuel system component corrosion.
CNG AND LP FUEL SYSTEM
M
ODIFICATIONS
Modifications that allow the engine to run on Compressed
Natural Gas (CNG) or Liquid Propane (LP) may result in
damage to the engine, emissions, and fuel system
components. Problems that result from running CNG or LP
are not the responsibility of the manufacturer and may
void the New Vehicle Limited Warranty.
METHYLCYCLOPENTADIENYL
M
ANGANESE TRICARBONYL (MMT) IN
G
ASOLINE
MMT is a manganese-containing metallic additive that is
blended into some gasolines to increase octane. Gasoline
blended with MMT provides no performance advantage beyond gasoline of the same octane number without
MMT. Gasoline blended with MMT reduces spark plug life
and reduces emissions system performance in some
vehicles. The manufacturer recommends that gasoline
without MMT be used in your vehicle. The MMT content of
gasoline may not be indicated on the gasoline pump;
therefore, you should ask the gasoline retailer whether the
gasoline contains MMT. MMT is prohibited in Federal and
California reformulated gasoline.
MATERIALS ADDED TO FUEL
Besides using unleaded gasoline with the proper octane
rating, gasolines that contain detergents, corrosion and
stability additives are recommended. Using gasolines that
have these additives will help improve fuel economy,
reduce emissions, and maintain vehicle performance.
Designated TOP TIER Detergent Gasoline
contains a higher level of detergents to further
aide in minimizing engine and fuel system
deposits. When available, the usage of TOP
TIER Detergent Gasoline is recommended. Visit
www.toptiergas.com for a list of TOP TIER Detergent
Gasoline retailers.
Indiscriminate use of fuel system cleaning agents should
be avoided. Many of these materials intended for gum and
varnish removal may contain active solvents or similar
ingredients. These can harm fuel system gasket and
diaphragm materials.
FUEL SYSTEM CAUTIONS
NOTE:Intentional tampering with the emissions control system
can result in civil penalties being assessed against you.
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 an 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 meth -
anol. Fuel system damage or vehicle performance
problems resulting from the use of such fuels or addi -
tives is not the responsibility of the manufacturer
and may void or not be covered under the New
Vehicle Limited Warranty.
9

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265
Oil Selection ............................................................ 215
Oil Synthetic ............................................................ 215
Overheating ............................................................. 203
Engine Fluids And Lubricants...................................... 256
Enhanced Accident Response Feature ............. 175
, 207
Ethanol.......................................................................... 254
Exhaust Gas Cautions.................................................. 188
Exhaust System ............................................................ 222
Exterior Lights........................................................ 39
, 188
FFilters Air Cleaner ............................................................... 216Air Conditioning................................................ 48
, 218
Engine Oil ................................................................ 216 Engine Oil Disposal ................................................. 215
Flashers Hazard Warning ...................................................... 189
Turn Signals ..................................................... 74
, 188
Flash-To-Pass ..................................................................40
Flat Tire Changing ............................................... 235
, 244
Flat Tire Stowage ................................................ 235, 244
Flooded Engine Starting .................................................78
Fluid Capacities ............................................................ 256
Fluid Leaks ................................................................... 188
Fluid Level Checks Brake ....................................................................... 225Engine Oil ................................................................ 214
Fob, Key ...........................................................................13
Fog Lights ........................................................................41 Fold-Flat Seats ................................................................28Folding Rear Seats..........................................................29Forward Collision Warning ........................................... 154
Four Wheel Drive............................................................. 85 Freeing A Stuck Vehicle................................................ 204
Fuel
Additives...................................................................255Clean Air ...................................................................254Ethanol .....................................................................254
Light............................................................................ 71
Materials Added ...................................................... 255
Methanol .................................................................. 254
Tank Capacity .......................................................... 256
Fueling ...........................................................................113
Fuses .............................................................................226
GGarage Door Opener (HomeLink®) ............................... 35 Gasoline, Clean Air ....................................................... 254
Gasoline, Reformulated ............................................... 254
Gear Ranges ................................................................... 82Gear Selector Override ................................................. 203
Glass Cleaning .............................................................. 252
Gross Axle Weight Rating ............................................. 115
Gross Combination Weight Rating............................... 115
Gross Trailer Weight ..................................................... 115
Gross Vehicle Weight Rating ........................................ 114
GVWR.............................................................................113
HHazard Warning Flashers ............................................. 189
Head Restraint Removal ................................................ 32
Head Restraints .............................................................. 32
Head Rests...................................................................... 32
Headlights ....................................................................... 39 Automatic ................................................................... 40
Automatic High Beam ............................................... 40 Cleaning ................................................................... 250
High Beam .......................................................... 39
, 40
High Beam/Low Beam Select Switch ...................... 40
On With Wipers.......................................................... 41
Passing ............................................................... 39
, 40
Switch ........................................................................ 39
Time Delay ................................................................. 41
Heated Mirrors ............................................................... 35 Heated Seats .................................................................. 31
Heated Steering Wheel .................................................. 24
Hill Descent Control ..................................................... 146
Hill Descent Control Indicator...................................... 146
Hill Start Assist ............................................................. 148
Hitches Trailer Towing .......................................................... 116
HomeLink® (Garage Door Opener)............................... 35
Hood Prop ....................................................................... 56
Hood Release ................................................................. 56
IIgnition ............................................................................ 16 Switch ........................................................................ 16
Ignition Pak Interlock ..................................................... 81
Illuminated Entry ............................................................ 43
Indicator light Blue ............................................................................ 75
Green ......................................................................... 73
White .......................................................................... 74
Yellow......................................................................... 73
Inside Rearview Mirror .......................................... 34
, 189
Instrument Cluster Descriptions

S
.......................................... 61, 63, 74
Display ....................................................................... 63
Display Controls ........................................................ 6311

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267
Modifications/AlterationsVehicle .......................................................................... 8
Monitor, Tire Pressure System .................................... 155
Mopar Parts .................................................................. 260
MP3 Control ....................................................................50
Multi-Function Control Lever ..........................................39
NNew Vehicle Break-In Period ..........................................78
OOccupant Restraints .................................................... 159
Off Road Pages ............................................................ 141 Accessory Gauges................................................... 142
Drivetrain................................................................. 141
Pitch And Roll .......................................................... 142
Status Bar ............................................................... 141
Off-Road Pages Selec-Terrain ........................................................... 142
Oil Filter, Change .......................................................... 216
Oil Filter, Selection ....................................................... 216
Oil Life Reset — If Equipped

S
..................................... 64
Oil Pressure Light ............................................................69
Oil Reset ..........................................................................64
Oil, Engine..................................................................... 215 Capacity ................................................................... 256
Checking .................................................................. 214
Dipstick.................................................................... 214
Disposal................................................................... 215
Filter......................................................................... 216
Filter Disposal ......................................................... 215Identification Logo .................................................. 215Materials Added To................................................. 215Pressure Warning Light ............................................. 69 Recommendation ....................................................215
Synthetic .................................................................. 215
Onboard Diagnostic System........................................... 75
Operating Precautions.................................................... 75 Operator Manual Owner's Manual ....................................................... 261
Outside Rearview Mirrors............................................... 34
Overheating, Engine ..................................................... 203
PPaddle Shifters ............................................................... 84
Paint Care...................................................................... 250
Parking Brake ................................................................. 78
ParkSense Front And Rear........................................................... 99
ParkSense Active Park Assist ...................................... 106
ParkSense System, Rear................................................ 99
Passive Entry................................................................... 22 Pets ................................................................................ 186
Pinch Protection.............................................................. 56
Placard, Tire And Loading Information ........................ 238
Power Brakes ...................................................................... 253
Door Locks ................................................................. 21
Inverter ....................................................................... 52
Mirrors ........................................................................ 35
Outlet (Auxiliary Electrical Outlet) ............................. 51
Windows..................................................................... 53
Power Seats Down .......................................................................... 30
Forward ...................................................................... 30
Rearward.................................................................... 30
Up ............................................................................... 30
Pregnant Women And Seat Belts ................................ 165 Preparation For Jacking ............................................... 191
Pressure Washing ........................................................ 215
Pretensioners
Seat Belts ................................................................ 165
RRadial Ply Tires ............................................................. 242
Radiator Cap (Coolant Pressure Cap) ......................... 224
RadioOff-Road Pages ....................................................... 141
Radio Operation ........................................................... 140
Radio Remote Controls ................................................ 140
Rain Sensitive Wiper System......................................... 44 Rear Camera................................................................. 112
Rear Cross Path............................................................ 153
Rear ParkSense System ................................................ 99Rear Seats, Folding ........................................................ 29Rear Wiper/Washer ....................................................... 45Recreational Towing ..................................................... 120 Shifting Into Power Transfer Unit Neutral (N)........ 122
Shifting Into Transfer Case Neutral (N) ................. 122
Shifting Out Of Power Transfer Unit Neutral (N) ... 123
Shifting Out Of Transfer Case Neutral (N) ............. 123
Reformulated Gasoline ................................................ 254
Refrigerant .................................................................... 218
Release, Hood ................................................................ 56
Reminder, Lights On....................................................... 41 Reminder, Seat Belt ..................................................... 159
Remote Control Starting System ......................................................... 18
Remote Keyless Entry .................................................... 14 Arm The Alarm ........................................................... 20
Disarm The Alarm ..................................................... 20
Programming Additional Key Fobs ........................... 15
11

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