2018 JEEP GRAND CHEROKEE engine overheat

from HI to LO, indicating the change. The
LO-level setting will turn OFF automatically
after approximately 45 minutes.
NOTE:
• Once a heat setting is selected, heat will be
felt within two to five minutes.
• The engine must be running for the heated
seats to operate.
Vehicles Equipped With Remote Start
On models that are equipped with remote
start, the heated seats can be programmed to
come on during a remote start.
This feature can be programmed through the
Uconnect system. Refer to your Owner's
Manual for further details.
WARNING!
• Persons who are unable to feel pain to
the skin because of advanced age,
chronic illness, diabetes, spinal cord in-
jury, medication, alcohol use, exhaus-
tion or other physical condition must
exercise care when using the seat
WARNING!
heater. It may cause burns even at low
temperatures, especially if used for long
periods of time.
• Do not place anything on the seat or
seatback that insulates against heat,
such as a blanket or cushion. This may
cause the seat heater to overheat. Sit-
ting in a seat that has been overheated
could cause serious burns due to the
increased surface temperature of the
seat.
Rear Heated Seats
On some models, the two outboard seats are
equipped with heated seats. The heated seat
switches for these seats are located on the
rear of the center console. There are two
heated seat switches
that allow the rear
passengers to operate the seats indepen-
dently.
You can choose from HI, LO or OFF heat
settings. The indicator lights in each switch
indicate the level of heat in use. Two indica-
tor lights will illuminate for HI, one for LO
and none for OFF.• Push the heated seat button
once to
select HI-level heating.
• Push the heated seat button
a second
time to select LO-level heating.
• Push the heated seat button
a third
time to turn the heating elements OFF.
NOTE:
• Once a heat setting is selected, heat will be
felt within two to five minutes.
• The engine must be running for the heated
seats to operate.
If the HI-level setting is selected, the system
will automatically switch to LO-level after
approximately 60 minutes of continuous op-
eration. At that time, the number of illumi-
nated LEDs changes from two to one, indicat-
ing the change. The LO-level setting will turn
OFF automatically after approximately
45 minutes.
Front Ventilated Seats
If your vehicle is equipped with ventilated
seats, the seat cushion and seat back will
have fans that draw the air from the passen-
ger compartment and move air through fine
GETTING TO KNOW YOUR VEHICLE
26

WARNING!
Do not adjust the steering column while
driving. Adjusting the steering column
while driving or driving with the steering
column unlocked, could cause the driver
to lose control of the vehicle. Failure to
follow this warning may result in serious
injury or death.
Heated Steering Wheel
The steering wheel contains a heating ele-
ment that helps warm your hands in cold
weather. The heated steering wheel has only
one temperature setting. Once the heated
steering wheel has been turned on, it will stay
on for an average of 80 minutes or more
before automatically shutting off. This time
will vary based on environmental tempera-
tures. The heated steering wheel can shut off
early or may not turn on when the steering
wheel is already warm.The heated steering wheel control button is
located within the Uconnect system. You can
gain access to the control button through the
climate screen or the controls screen.
• Press the heated steering wheel button
once to turn the heating element ON.
• Press the heated steering wheel button
a second time to turn the heating element
OFF.
NOTE:
The engine must be running for the heated
steering wheel to operate.
Vehicles Equipped With Remote Start
On models that are equipped with remote
start, the heated steering wheel can be pro-
grammed to come on during a remote start
through the Uconnect system. Refer to
“Uconnect Settings” in “Multimedia” in the
Owner’s Manual for further information.
WARNING!
• Persons who are unable to feel pain to
the skin because of advanced age,
chronic illness, diabetes, spinal cord in-
WARNING!
jury, medication, alcohol use, exhaus-
tion, or other physical conditions must
exercise care when using the steering
wheel heater. It may cause burns even at
low temperatures, especially if used for
long periods.
• Do not place anything on the steering
wheel that insulates against heat, such
as a blanket or steering wheel covers of
any type and material. This may cause
the steering wheel heater to overheat.
MIRRORS
Folding Mirrors
All outside mirrors are hinged and may be
moved either forward or rearward to resist
damage. The hinges have three detent posi-
tions:
• Full forward position
• Full rearward position
• Normal positionGETTING TO KNOW YOUR VEHICLE
32

Manual Operation Override
This system offers a full complement of
manual override features. The AUTO symbol
in the front ATC display will be turned off
when the system is being used in the manual
mode.
Operating Tips
Summer Operation
The engine cooling system must be protected
with a high-quality antifreeze coolant to pro-
vide proper corrosion protection and to pro-
tect against engine overheating. OAT coolant
(conforming to MS.90032) is recommended.
Winter Operation
To ensure the best possible heater and de-
froster performance, make sure the engine
cooling system is functioning properly and
the proper amount, type, and concentration
of coolant is used. Use of the Air Recircula-
tion mode during Winter months is not rec-
ommended, because it may cause window
fogging.
Vacation/Storage
Before you store your vehicle, or keep it out of
service (i.e., vacation) for two weeks or more,
run the air conditioning system at idle for
about five minutes, in fresh air with the
blower setting on high. This will ensure ad-
equate system lubrication to minimize the
possibility of compressor damage when the
system is started again.
Window Fogging
Vehicle windows tend to fog on the inside in
mild, rainy, and/or humid weather. To clear
the windows, select Defrost or Mix mode and
increase the front blower speed. Do not use
the Recirculation mode without A/C for long
periods, as fogging may occur.
CAUTION!
Failure to follow these cautions can cause
damage to the heating elements:
• Use care when washing the inside of
the rear window. Do not use abrasive
window cleaners on the interior surface
of the window. Use a soft cloth and a
CAUTION!
mild washing solution, wiping parallel
to the heating elements. Labels can be
peeled off after soaking with warm
water.
• Do not use scrapers, sharp instru-
ments, or abrasive window cleaners on
the interior surface of the window.
• Keep all objects a safe distance from
the window.
Outside Air Intake
Make sure the air intake, located directly in
front of the windshield, is free of obstruc-
tions, such as leaves. Leaves collected in the
air intake may reduce airflow, and if they
enter the plenum, they could plug the water
drains. In Winter months, make sure the air
intake is clear of ice, slush, and snow.
Cabin Air Filter
The climate control system filters out dust
and pollen from the air. Contact an autho-
rized dealer to service your cabin air filter,
and to have it replaced when needed.
GETTING TO KNOW YOUR VEHICLE
48

NOTE:
If the vehicle is moving, there will also be a
single chime.
— Electric Power Steering Fault
Warning Light
This light will turn on when there's a fault
with the EPS (Electric Power Steering) sys-
tem. Refer to “Power Steering” in “Starting
And Operating” in the Owner’s Manual for
further information.
WARNING!
Continued operation with reduced assist
could pose a safety risk to yourself and
others. Service should be obtained as soon
as possible.
— Electronic Throttle Control (ETC)
Warning Light
This light informs you of a problem with the
Electronic Throttle Control (ETC) system. If a
problem is detected while the vehicle is run-
ning, the light will either stay on or flash
depending on the nature of the problem.Cycle the ignition when the vehicle is safely
and completely stopped and the transmission
is placed in the PARK position. The light
should turn off. If the light remains on with
the vehicle running, your vehicle will usually
be drivable; however, see an authorized
dealer for service as soon as possible.
NOTE:
This light may turn on if the accelerator and
brake pedals are pressed at the same time.
If the light continues to flash when the ve-
hicle is running, immediate service is re-
quired and you may experience reduced per-
formance, an elevated/rough idle, or engine
stall and your vehicle may require towing.
The light will come on when the ignition is
placed in the ON/RUN or ACC/ON/RUN posi-
tion and remain on briefly as a bulb check. If
the light does not come on during starting,
have the system checked by an authorized
dealer.
— Engine Coolant Temperature Warn-
ing Light
This light warns of an overheated engine
condition. If the engine coolant temperature
is too high, this indicator will illuminate and
a single chime will sound. If the temperature
reaches the upper limit, a continuous chime
will be sound for four minutes or until the
engine is able to cool: whichever comes first.
If the light turns on while driving, safely pull
over and stop the vehicle. If the A/C system is
on, turn it off. Also, shift the transmission
into NEUTRAL and idle the vehicle. If the
temperature reading does not return to nor-
mal, turn the engine off immediately and call
for service. Refer to “If Your Engine Over-
heats” in “In Case Of Emergency” for further
information.
— Hood Open Warning Light
This indicator will illuminate when the hood
is ajar/open and not fully closed.
NOTE:
If the vehicle is moving, there will also be a
single chime.
GETTING TO KNOW YOUR INSTRUMENT PANEL
68

STARTING THE ENGINE —
3.0L DIESEL ENGINE
Before starting your vehicle, adjust your seat,
both inside and outside mirrors, and fasten
your seat belts.
The starter is allowed to crank for up to
30-second intervals. Waiting a few minutes
between such intervals will protect the starter
from overheating.
WARNING!
• Before exiting a vehicle, always come to
a complete stop, then shift the auto-
matic transmission into PARK and apply
the parking brake.
• Always make sure the keyless ignition
node is in the OFF mode, key fob is
removed from the vehicle and vehicle is
locked.
• Never leave children alone in a vehicle,
or with access to an unlocked vehicle.
WARNING!
Leaving children in a vehicle unattended
is dangerous for a number of reasons. A
child or others could be seriously or
fatally injured. Children should be
warned not to touch the parking brake,
brake pedal or the gear selector.
• Do not leave the key fob in or near the
vehicle, or in a location accessible to
children, and do not leave the ignition of
a vehicle equipped with Keyless Enter-
N-Go in the ACC or ON/RUN mode. A
child could operate power windows,
other controls, or move the vehicle.
• Do not leave children or animals inside
parked vehicles in hot weather. Interior
heat build-up may cause serious injury
or death.
NOTE:
Engine start up in very low ambient tempera-
ture could result in evident white smoke. This
condition will disappear as the engine warms
up.
CAUTION!
• The engine is allowed to crank as long as
30 seconds. If the engine fails to start
during this period, please wait at least
two minutes for the starter to cool before
repeating start procedure.
• If the “Water in Fuel Indicator Light”
remains on, DO NOT START engine be-
fore you drain the water from the fuel
filters to avoid engine damage. Refer to
“Draining Fuel/Water Separator Filter”
in “Servicing And Maintenance” in your
Diesel Supplement for further informa-
tion, which can be found with your on-
line Owner’s Information.
139

This system can also provide you with more
control during passing, city driving, cold slip-
pery conditions, mountain driving, trailer
towing, and many other situations.
Operation
To activate AutoStick mode, move the gear
selector into the MANUAL (M) position (be-
side the DRIVE position), or tap one of the
shift paddles on the steering wheel. Tapping
the (-) shift paddle to enter AutoStick mode
will downshift the transmission to the next
lower gear, while tapping (+) to enter
AutoStick mode will retain the current gear.
The current transmission gear will be dis-
played in the instrument cluster. In AutoStick
mode, you can use the gear selector (in the
MANUAL position), or the shift paddles, to
manually shift the transmission. Tapping thegear selector forward (-) while in the
MANUAL (M) position, or tapping the (-) shift
paddle, will downshift the transmission to the
next lower gear. Tapping the selector rear-
ward (+) (or tapping the (+) shift paddle) will
command an upshift.
NOTE:
The shift paddles may be disabled (or re-
enabled, as desired) using the Uconnect Per-
sonal Settings or, in SRT models, using Drive
Modes.
In AutoStick mode, the transmission will
shift up or down when (+/-) is manually se-
lected by the driver (using the gear selector,
or the shift paddles), unless an engine lug-
ging or overspeed condition would result. It
will remain in the selected gear until another
upshift or downshift is chosen, except as
described below.
• The transmission will automatically down-
shift as the vehicle slows (to prevent engine
lugging) and will display the current gear.• The transmission will automatically down-
shift to first gear when coming to a stop.
After a stop, the driver should manually
upshift (+) the transmission as the vehicle
is accelerated.
• You can start out, from a stop, in first or
second gear (or third gear, in 4LO range,
Snow mode, or Sand mode). Tapping (+) (at
a stop) will allow starting in second gear.
Starting out in second or third gear can be
helpful in snowy or icy conditions.
• If a requested downshift would cause the
engine to over-speed, that shift will not
occur.
• The system will ignore attempts to upshift
at too low of a vehicle speed.
• Holding the (-) paddle depressed, or hold-
ing the gear selector in the (-) position, will
downshift the transmission to the lowest
gear possible at the current speed.
• Transmission shifting will be more notice-
able when AutoStick is enabled.
• The system may revert to automatic shift
mode if a fault or overheat condition is
detected.
Shift Paddles
STARTING AND OPERATING
148

IN CASE OF EMERGENCY
HAZARD WARNING FLASHERS .198
Control....................198
BULB REPLACEMENT........198
Replacement Bulbs.............198
Bulb Replacement.............200
FUSES...................204
General Information.............204
Underhood Fuses..............204
JACKING AND TIRE CHANGING. .209
Run Flat Tires — SRT Models.......209
Jack Location................209Preparations For Jacking.........210
Jacking Instructions............210
Road Tire Installation............214
Declaration Of Conformance.......214
Jack Usage Precautions..........217
JUMP STARTING............217
Preparations For Jump Start........218
Jump Starting Procedure..........219
REFUELING IN EMERGENCY . . .220
IF YOUR ENGINE OVERHEATS .220
MANUAL PARK RELEASE......221FREEING A STUCK VEHICLE . . .222
TOWING A DISABLED VEHICLE .223
Without The Key Fob............225
Two-Wheel Drive Models..........225
Four-Wheel Drive Models.........225
Tow Eye Usage — If Equipped......226
Emergency Tow Hooks — If Equipped .227
ENHANCED ACCIDENT RESPONSE
SYSTEM (EARS)............228
EVENT DATA RECORDER (EDR) .228
IN CASE OF EMERGENCY
197

CAUTION!
Do not run the booster vehicle engine
above 2000 rpm since it provides no
charging benefit, wastes fuel and can
damage booster vehicle engine.
6. Once the engine is started, remove the
jumper cables in the reverse sequence:
Cable Disconnection
1. Disconnect the negative(-)end of the
jumper cable from the remote negative(-)
post of the discharged vehicle.
2. Disconnect the opposite end of the nega-
tive(-)jumper cable from the negative(-)
post of the booster battery.
3. Disconnect the positive(+)end of the
jumper cable from the positive(+)post of
the booster battery.
4. Disconnect the opposite end of the posi-
tive(+)jumper cable from the remote
positive(+)post of the discharged
vehicle.5. Reinstall the protective cover over the
remote positive(+)post of the discharged
vehicle.
REFUELING IN EMERGENCY
The funnel for the Cap-Less Fuel System is
located in the spare tire storage area. If your
vehicle is out of fuel and an auxiliary fuel can
is needed, insert the funnel into the filler
neck and proceed to fill the vehicle.
For more information on the Cap-Less Fuel
System refer to “Refueling The Vehicle” in
“Starting And Operating”.
IF YOUR ENGINE
OVERHEATS
In any of the following situations, 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, but do not in-
crease the engine idle speed while prevent-
ing vehicle motion with the brakes.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.
IN CASE OF EMERGENCY
220