warning light JEEP GRAND CHEROKEE 2018 Owner handbook (in English)

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

WINDOWS
Power Window Controls
The window controls on the driver's door
control all the door windows.There are single window controls on each
passenger door trim panel, which operate the
passenger door windows. The window con-
trols will operate only when the ignition is in
the ACC or ON/RUN position.
WARNING!
Never leave children unattended in a ve-
hicle, and do not let children play with
power windows. Do not leave the key fob in
or near the vehicle, or in a location acces-
sible to children, and do not leave the
ignition of a vehicle equipped with Keyless
Enter-N-Go in the ACC or ON/RUN mode.
Occupants, particularly unattended chil-
dren, can become entrapped by the win-
dows while operating the power window
switches. Such entrapment may result in
serious injury or death.
Auto-Down Feature
The driver door power window switch and the
front and rear passenger doors window
switches have an Auto-Down feature.Push the window switch down for half a
second and release. The window will go down
automatically.
To stop the window from going all the way
down during the Auto-Down operation, pull
up or push down on the switch briefly.
To open the window part way (manually),
push the window switch down briefly and
release.
Auto-Up Feature With Anti-Pinch
Protection
NOTE:
• If the window runs into any obstacle during
auto-closure, it will reverse direction and
then go back down. Remove the obstacle
and use the window switch again to close
the window.
• Any impact due to rough road conditions
may trigger the auto-reverse function unex-
pectedly during auto-closure. If this hap-
pens, pull the switch lightly and hold to
close the window manually.
Power Window Switches
1 — Front Power Window Switches
2 — Rear Power Window Switches
49

WARNING!
There is no anti-pinch protection when the
window is almost closed. To avoid personal
injury be sure to clear your arms, hands,
fingers and all objects from the window
path before closing.
Reset Auto-Up
Should the Auto-Up feature stop working, the
window probably needs to be reset. To reset
Auto-Up:
1. Pull the window switch up to close the
window completely and continue to hold
the switch up for an additional two sec-
onds after the window is closed.
2. Push the window switch down firmly to
open the window completely and continue
to hold the switch down for an additional
two seconds after the window is fully
open.
Window Lockout Switch
The window lockout switch on the driver's
door trim panel allows you to disable the
window controls on the rear passenger doors.
To disable the window controls, push and
release the window lockout button (the indi-
cator light on the button with turn on). To
enable the window controls, push and release
the window lockout button again (the indica-
tor light on the button will turn back off).
Wind Buffeting
Wind buffeting can be described as the per-
ception of pressure on the ears or a
helicopter-type sound in the ears. Your ve-
hicle may exhibit wind buffeting with the
windows down, or the sunroof (if equipped) in
certain open or partially open positions. This
is a normal occurrence and can be mini-
mized. If the buffeting occurs with the rear
windows open, open the front and rear win-
dows together to minimize the buffeting. If
the buffeting occurs with the sunroof open,
adjust the sunroof opening to minimize the
buffeting or open any window.
Power Window Lockout Button
GETTING TO KNOW YOUR VEHICLE
50

NOTE:
• In the event of a power malfunction to the
liftgate, an emergency liftgate latch release
can be used to open the liftgate. The emer-
gency liftgate latch release can be ac-
cessed through a snap-in cover located on
the liftgate trim panel.
• If liftgate is left open for an extended pe-
riod of time, the liftgate may need to be
closed manually to reset power liftgate
functionality.
WARNING!
During power operation, personal injury or
cargo damage may occur. Ensure the lift-
gate travel path is clear. Make sure the
liftgate is closed and latched before driv-
ing away.
NOTE:
• The power liftgate buttons will not operate
if the vehicle is in gear or the vehicle speed
is above 0 MPH (0 km/h).• The power liftgate will not operate in tem-
peratures below −22°F (−30°C) or tem-
peratures above 150° F (65° C). Be sure to
remove any buildup of snow or ice from the
liftgate before pushing any of the power
liftgate switches.
• If anything obstructs the power liftgate
while it is closing or opening, the liftgate
will automatically reverse to the closed or
open position, provided it meets sufficient
resistance.
• There are also pinch sensors attached to
the side of the liftgate. Light pressure any-
where along these strips will cause the
liftgate to return to the open position.
• If the liftgate is not fully open, push the
liftgate button on the key fob twice to
operate the liftgate.
• If the electronic liftgate release is pushed
while the power liftgate is closing, the lift-
gate will reverse to the full open position.
• If the electronic liftgate release is pushed
while the power liftgate is opening, the
liftgate motor will disengage to allow
manual operation.• If the power liftgate encounters multiple
obstructions within the same cycle, the
system will automatically stop and the lift-
gate must be opened or closed manually.
WARNING!
• Driving with the liftgate open can allow
poisonous exhaust gases into your ve-
hicle. You and your passengers could be
injured by these fumes. Keep the liftgate
closed when you are operating the ve-
hicle.
• If you are required to drive with the
liftgate open, make sure that all win-
dows are closed, and the climate control
blower switch is set at high speed. Do
not use the recirculation mode.
GETTING TO KNOW YOUR VEHICLE
56

GETTING TO KNOW YOUR INSTRUMENT PANEL
INSTRUMENT CLUSTER DISPLAY .62
Instrument Cluster Display Location And
Controls....................62
Instrument Cluster Display Selectable
Items......................63
Display Menu items..............63
TRIP COMPUTER.............66WARNING LIGHTS AND MES-
SAGES ....................66
Red Warning Lights..............66
Yellow Warning Lights............70
Yellow Indicator Lights............73
Green Indicator Lights............74White Indicator Lights............75
Blue Indicator Lights.............76ONBOARD DIAGNOSTIC SYSTEM —
OBDII ....................77
Onboard Diagnostic System (OBD II)
Cybersecurity.................77
GETTING TO KNOW YOUR INSTRUMENT PANEL
61

Diesel Exhaust Fluid (DEF) Fault Warning
Messages
There are different messages which are dis-
played if the vehicle detects that the DEF
system has been filled with a fluid other than
DEF, has experienced component failures, or
when tampering has been detected.
When the DEF system needs to be serviced
the following warnings will display:
•Service DEF System See Dealer— This mes-
sage will display when the fault is initially
detected and each time the vehicle is
started. The message will be accompanied
by a single chime and the Malfunction
Indicator Light. We recommend you drive to
your nearest authorized dealer and have
your vehicle serviced immediately. If not
corrected in 30 miles, vehicle will enter the
“Engine Will not restart in XXXmi Service
DEF See dealer” warning stage and mes-
sage.
•Incorrect DEF Detected See Dealer— This
message will display if the DEF system has
detected the incorrect fluid has been intro-
duced to the DEF tank. The message will be
accompanied by a single chime. We recom-mend you drive to your nearest authorized
dealer and have your vehicle serviced im-
mediately. If not corrected in 30 miles,
vehicle will enter the Engine Will not restart
in XXX mi Service DEF See dealer warning
stage and message.
•Engine Will Not Restart in XXX mi Service DEF
See Dealer— This message is first dis-
played if the fault detected is not serviced
after 30 miles of operation. It is also dis-
played at 250 miles, 186 miles, and
124 miles. System service is required
within the displayed mileage. The message
will be displayed in the instrument cluster
display during vehicle start up with an up-
dated distance mileage, and it will be ac-
companied by a single chime. Starting at
124 miles, remaining range will be con-
tinuously displayed while operating the ve-
hicle. Chimes will also accompany the 75,
5,0 and 25 mile remaining distances. We
recommend you drive to your nearest au-
thorized dealer and have your vehicle ser-
viced immediately.•Engine Will Not Restart Service DEF System
See Dealer— This message will display if
DEF system issue detected is not serviced
during the allowed period. Your engine will
not restart unless your vehicle is serviced by
your authorized dealer. This message will
be displayed when under 1 mile until en-
gine will not start and each time the vehicle
is started, and will be continuously dis-
played. The message will be accompanied
by a single chime. Your Malfunction Indi-
cator Light will be continuously illumined.
We highly recommend you drive to your
nearest authorized dealer if the message
appears while engine is running.
•Engine Will Not Start Service DEF System See
Dealer— This message will display when
the fault detected is not serviced after the
Engine will not restart Service DEF System
See Dealer message is displayed on the
next subsequent restart. Your engine will
not start unless you vehicle is serviced by
your authorized dealer. The message will be
accompanied by a single chime. Your Mal-
function Indicator Light will be continu-
ously illuminated. If the message appears
and you can not start the engine, we rec-
65

ommend you have your vehicle towed to
your nearest authorized dealer
immediately.
NOTE:
• The gauge may take up to five seconds to
update after adding a gallon or more of
Diesel Exhaust Fluid (DEF) to the DEF tank.
If you have a fault related to the DEF
system, the gauge may not update to the
new level. See your authorized dealer for
service.
• The DEF gauge may also not immediately
update after a refill if the temperature of
the DEF fluid is below 12F (-11C). The DEF
line heater will possibly warm up the DEF
fluid and allow the gauge to update after a
period of run time. Under very cold condi-
tions, it is possible that the gauge may not
reflect the new fill level for several drives.TRIP COMPUTER
Push and release the up or down arrow button
until the Trip A or Trip B icon is highlighted in
the instrument cluster display (Toggle left or
right to select Trip A or Trip B). Push and
release the OK button to display the Trip
information.
WARNING LIGHTS AND
MESSAGES
The warning/indicator lights will illuminate in
the instrument panel together with a dedi-
cated message and/or acoustic signal when
applicable. These indications are indicative
and precautionary and as such must not be
considered as exhaustive and/or alternative
to the information contained in the Owner’s
Manual, which you are advised to read care-
fully in all cases. Always refer to the informa-
tion in this chapter in the event of a failure
indication. All active telltales will display first
if applicable. The system check menu may
appear different based upon equipment op-tions and current vehicle status. Some tell-
tales are optional and may not appear.
Red Warning Lights
— Air Bag Warning Light
This light indicates a fault with the air bag,
and will turn on for four to eight seconds as a
bulb check when the ignition is placed in the
ON/RUN or ACC/ON/RUN position. This light
will illuminate with a single chime when a
fault with the air bag has been detected, it
will stay on until the fault is cleared. If the
light is either not on during startup, stays on,
or turns on while driving, have the system
inspected at an authorized dealer as soon as
possible.
— Brake Warning Light
This light monitors various brake functions,
including brake fluid level and parking brake
application. If the brake light turns on it may
indicate that the parking brake is applied,
that the brake fluid level is low, or that there
is a problem with the anti-lock brake system.
GETTING TO KNOW YOUR INSTRUMENT PANEL
66

If the light remains on when the parking
brake has been disengaged, and the fluid
level is at the full mark on the master cylinder
reservoir, it indicates a possible brake hy-
draulic system malfunction or that a problem
with the Brake Booster has been detected by
the Anti-Lock Brake System (ABS) / Elec-
tronic Stability Control (ESC) system. In this
case, the light will remain on until the condi-
tion has been corrected. If the problem is
related to the brake booster, the ABS pump
will run when applying the brake, and a brake
pedal pulsation may be felt during each stop.
The dual brake system provides a reserve
braking capacity in the event of a failure to a
portion of the hydraulic system. A leak in
either half of the dual brake system is indi-
cated by the Brake Warning Light, which will
turn on when the brake fluid level in the
master cylinder has dropped below a speci-
fied level.
The light will remain on until the cause is
corrected.NOTE:
The light may flash momentarily during sharp
cornering maneuvers, which change fluid
level conditions. The vehicle should have
service performed, and the brake fluid level
checked.
If brake failure is indicated, immediate repair
is necessary.
WARNING!
Driving a vehicle with the red brake light
on is dangerous. Part of the brake system
may have failed. It will take longer to stop
the vehicle. You could have a collision.
Have the vehicle checked immediately.
Vehicles equipped with the Anti-Lock Brake
System (ABS) are also equipped with Elec-
tronic Brake Force Distribution (EBD). In the
event of an EBD failure, the Brake Warning
Light will turn on along with the ABS Light.
Immediate repair to the ABS system is re-
quired.
Operation of the Brake Warning Light can be
checked by turning the ignition switch from
the OFF position to the ON/RUN position.The light should illuminate for approximately
four seconds. The light should then turn off
unless the parking brake is applied or a brake
fault is detected. If the light does not illumi-
nate, have the light inspected by an autho-
rized dealer.
The light also will turn on when the parking
brake is applied with the ignition switch in
the ON/RUN position.
NOTE:
This light shows only that the parking brake is
applied. It does not show the degree of brake
application.
— Battery Charge Warning Light
This light illuminates when the battery is not
charging properly. If it stays on while the
engine is running, there may be a malfunc-
tion with the charging system. Contact your
authorized dealer as soon as possible.
This indicates a possible problem with the
electrical system or a related component.
— Door Open Warning Light
This indicator will illuminate when a door is
ajar/open and not fully closed.
67

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

— Liftgate Open Warning Light
This indicator light will illuminate when the
liftgate is open.
NOTE:
If the vehicle is moving, there will also be a
single chime.
— Oil Pressure Warning Light
This warning light will illuminate to indicate
low engine oil pressure. If the light turns on
while driving, stop the vehicle and shut off
the engine as soon as possible. A chime will
sound when this light turns on.
Do not operate the vehicle until the cause is
corrected. This light does not indicate how
much oil is in the engine. The engine oil level
must be checked under the hood.
— Oil Temperature Warning Light
This telltale indicates engine oil temperature
is high. If the light turns on while driving,
stop the vehicle and shut off the engine as
soon as possible. Wait for oil temperature to
return to normal levels.
— Seat Belt Reminder Warning Light
This light indicates when the driver or pas-
senger seat belt is unbuckled. When the
ignition is first placed in the ON/RUN or
ACC/ON/RUN position and if the driver’s seat
belt is unbuckled, a chime will sound and the
light will turn on. When driving, if the driver
or front passenger seat belt remains unbuck-
led, the Seat Belt Reminder Light will flash or
remain on continuously and a chime will
sound. Refer to “Occupant Restraint Sys-
tems” in “Safety” for further information.
— Transmission Temperature Warning
Light — If Equipped
This light indicates high transmission fluid
temperature. This may occur with strenuous
usage such as trailer towing. If this light turns
on, stop the vehicle and run the engine at idle
or slightly faster, with the transmission in
PARK or NEUTRAL, until the light turns off.
Once the light turns off, you may continue to
drive normally.
WARNING!
If you continue operating the vehicle when
the Transmission Temperature Warning
Light is illuminated you could cause the
fluid to boil over, come in contact with hot
engine or exhaust components and cause a
fire.
CAUTION!
Continuous driving with the Transmission
Temperature Warning Light illuminated
will eventually cause severe transmission
damage or transmission failure.
— Vehicle Security Warning Light — If
Equipped
This light will flash at a fast rate for approxi-
mately 15 seconds when the vehicle security
alarm is arming, and then will flash slowly
until the vehicle is disarmed.
69