2018 JEEP GRAND CHEROKEE engine

NOTE:
• If shift conditions/interlocks are not met, or
a transfer case motor temperature protec-
tion condition exists, a “For 4x4 High Slow
Below 3 mph (5 km/h) Put Trans in N push
4 Low” message will flash from the instru-
ment cluster display. Refer to “Instrument
Cluster Display” in “Getting To Know Your
Instrument Panel” for further information.
• Shifting into or out of 4WD LOW is possible
with the vehicle completely stopped; how-
ever, difficulty may occur due to the mating
clutch teeth not being properly aligned.
Several attempts may be required for
clutch teeth alignment and shift comple-
tion to occur. The preferred method is with
the vehicle rolling 0 to 3 mph (0 to 5 km/h).
If the vehicle is moving faster than 3 mph
(5 km/h), the transfer case will not allow
the shift.
Shifting Into NEUTRAL (N)
WARNING!
You or others could be injured or killed if
you leave the vehicle unattended with the
WARNING!
transfer case in the NEUTRAL (N) position
without first fully engaging the parking
brake. The NEUTRAL (N) position disen-
gages both the front and rear drive shafts
from the powertrain and will allow the
vehicle to roll, even if the transmission is
in PARK. The parking brake should always
be applied when the driver is not in the
vehicle.
1. Bring the vehicle to a complete stop, with
the engine running.
2. Press and hold the brake pedal.
3. Shift the transmission into NEUTRAL.
4. If vehicle is equipped with Quadra-Lift air
suspension, ensure the vehicle is set to
Normal Ride Height.
5. Using a ballpoint pen or similar object,
push and hold the recessed transfer case
NEUTRAL (N) button (located by the se-
lector switch) for four seconds. The light
behind the NEUTRAL (N) symbol will
blink, indicating shift in progress. The
light will stop blinking (stay on solid)
when the shift to NEUTRAL (N) is com-plete. A “NEUTRAL” message will appear
in the instrument cluster display. Refer to
“Instrument Cluster Display” in “Getting
To Know Your Instrument Panel” for fur-
ther information.
6. After the shift is completed and the NEU-
TRAL (N) light stays on, release the NEU-
TRAL (N) button.
7. Shift the transmission into REVERSE.
8. Release the brake pedal for five seconds
and ensure that there is no vehicle
movement.
NEUTRAL (N) Switch
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152

9. Press and hold the brake pedal. Shift the
transmission back into NEUTRAL.
10. Firmly apply the parking brake.
11. With the transmission and transfer case
in NEUTRAL, push and hold the EN-
GINE START/STOP button until the en-
gine turns off.
12. Place the transmission gear selector in
PARK. Release the brake pedal.
13. Push the ENGINE STOP/START button
twice (without pressing the brake pedal),
to turn the ignition to the OFF mode.
14. Release the parking brake only when the
vehicle is securely attached to a tow
vehicle.
NOTE:
If shift conditions/interlocks are not met, a
“To Tow Vehicle Safely, Read Neutral Shift
Procedure in Owner’s Manual” message will
flash from the instrument cluster display.
Refer to “Instrument Cluster Display” in
“Getting To Know Your Instrument Panel” for
further information.Shifting Out Of NEUTRAL (N)
Use the following procedure to prepare your
vehicle for normal usage.
1. Bring the vehicle to a complete stop.
2. Firmly apply the parking brake.
3. Start the engine.
4. Press and hold the brake pedal.
5. Shift the transmission into NEUTRAL.
6. Using a ballpoint pen or similar object,
push and hold the recessed transfer case
NEUTRAL (N) button (located by the se-
lector switch) for one second.7. When the NEUTRAL (N) indicator light
turns off, release the NEUTRAL (N)
button.
8. After the NEUTRAL (N) button has been
released, the transfer case will shift to the
position indicated by the selector switch.
Quadra-Drive II System — If Equipped
The optional Quadra-Drive II System features
two torque transfer couplings. The couplings
include an Electronic Limited-Slip Differen-
tial (ELSD) rear axle and the Quadra-Trac II
transfer case. The optional ELSD axle is fully
automatic and requires no driver input to
operate. Under normal driving conditions,
the unit functions as a standard axle, balanc-
ing torque evenly between left and right
wheels. With a traction difference between
left and right wheels, the coupling will sense
a speed difference. As one wheel begins to
spin faster than the other, torque will auto-
matically transfer from the wheel that has
less traction, to the wheel that has traction.
While the transfer case and axle coupling
NEUTRAL (N) Switch
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•Aero Mode (Lowers the vehicle approximately
0.6 inches (15 mm))– This position provides
improved aerodynamics by lowering the ve-
hicle. The vehicle will automatically enter
Aero Mode when the vehicle speed remains
between 52 mph (83 km/h) and 56 mph
(90 km/h) for greater than 20 seconds or if
the vehicle speed exceeds 56 mph
(90 km/h). The vehicle will return to NRH
from Aero Mode if the vehicle speed re-
mains between 20 mph (32 km/h) and
25 mph (40 km/h) for greater than 20 sec-
onds or if the vehicle speed falls below
20 mph (32 km/h). The vehicle will enter
Aero Mode, regardless of vehicle speed if
the vehicle is in “SPORT” mode.
•Entry/Exit Mode (Lowers the vehicle approxi-
mately 1.6 inches (40 mm)– This position
lowers the vehicle for easier passenger en-
try and exit as well as lowering the rear of
the vehicle for easier loading and unloading
of cargo. To enter Entry/Exit Mode, push the
“DOWN” button once from (NRH) while the
vehicle speed is below 25 mph (40 km/h).
Once the vehicle speed goes below 15 mph
(24 km/h) the vehicle height will begin to
lower. If the vehicle speed remains between15 mph (24 km/h) and 25 mph (40 km/h)
for greater than 60 seconds, or the vehicle
speed exceeds 25 mph (40 km/h) the
Entry/Exit Mode change will be cancelled.
To exit Entry/Exit Mode, press the “Up”
button once while in Entry/Exit Mode or
drive the vehicle over 15 mph (24 km/h).
NOTE:
Automatic lowering of the vehicle into Entry/
Exit Mode can be enabled through the
Uconnect Touch-Screen Radio. If this feature
is enabled, the vehicle will only lower if the
gear selector is in "PARK", the terrain switch
is in "AUTO", the transfer-case is in "AUTO”
and the vehicle level should be either in
Normal or Aero Mode. The Vehicle will not
automatically lower if the air suspension level
is in Off Rd 2 or Off Rd 1. If the vehicle is
equipped with Intrusion Theft Module (ITM),
the lowering will be suppressed when the
ignition is switched OFF and the door is open
to prevent setting the alarm off.
The Selec-Terrain switch will automatically
change the vehicle to the proper height based
on the position of the Selec-Terrain switch.
The height can be changed from the defaultSelec-Terrain setting by normal use of the air
suspension buttons. Refer to “Selec-Terrain”
in “Starting And Operating” for further infor-
mation.
The system requires that the engine be run-
ning for all changes. When lowering the ve-
hicle all of the doors, including the liftgate,
must be closed. If a door is opened at any
time while the vehicle is lowering the change
will not be completed until the open door(s)
is/are closed.
The Quadra-Lift air suspension system uses a
lifting and lowering pattern which keeps the
headlights from incorrectly shining into on-
coming traffic. When raising the vehicle, the
rear of the vehicle will move up first and then
the front. When lowering the vehicle, the
front will move down first and then the rear.
After the engine is turned off, it may be
noticed that the air suspension system oper-
ates briefly, this is normal. The system is
correcting the position of the vehicle to en-
sure a proper appearance.
155

To assist with changing a spare tire, the
Quadra-Lift air suspension system has a fea-
ture which allows the automatic leveling to
be disabled. Refer to “Uconnect Settings” in
“Multimedia” for further information.
For further information refer to “Driving Tips”
in “Starting And Operating” in the Owner’s
Manual.
NOTE:
If equipped with a touch screen radio all
enabling/disabling of air suspension features
must be done through the radio. Refer to
“Uconnect Settings” in “Multimedia” for fur-
ther information.
WARNING!
The air suspension system uses a high
pressure volume of air to operate the sys-
tem. To avoid personal injury or damage to
the system, see your authorized dealer for
service.
Air Suspension Modes
The Air Suspension system has multiple
modes to protect the system in unique situa-
tions:
Tire/Jack Mode
To assist with changing a spare tire, the air
suspension system has a feature which al-
lows the automatic leveling to be disabled.
Refer to “Uconnect Settings” in “Multime-
dia” for further information.
NOTE:
This mode is intended to be enabled with
engine running.
Auto Entry/Exit Mode
To assist in entering and exiting the vehicle,
the air suspension system has a feature
which automatically lowers the vehicle to
entry/exit ride height. Refer to “Uconnect
Settings” in “Multimedia” for further infor-
mation.
NOTE:
This mode is intended to be enabled with
engine running.Transport Mode
To assist with flat bed towing, the air suspen-
sion system has a feature which will put the
vehicle into Entry/Exit height and disable the
automatic load leveling system. Refer to
“Uconnect Settings” in “Multimedia” for fur-
ther information.
NOTE:
This mode is intended to be enabled with
engine running.
Suspension Display Messages Mode
The “Suspension Display Messages” setting
allows you to only display suspension warn-
ings. Refer to “Uconnect Settings” in “Mul-
timedia” for further information.
NOTE:
This mode is intended to be enabled with
engine running.
Wheel Alignment Mode
Before performing a wheel alignment this
mode must be enabled. Refer to “Uconnect
Settings” in “Multimedia” for further infor-
mation.
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156

NOTE:
This mode is intended to be enabled with
engine running.
If equipped with a touch screen radio all
enabling/disabling of air suspension features
must be done through the radio. Refer to
“Uconnect Settings” in “Multimedia” for fur-
ther information.
Instrument Cluster Display Messages
When the appropriate conditions exist, a
message will appear in the instrument clus-
ter. Refer to “Instrument Cluster Display” in
“Getting To Know Your Instrument Panel” for
further information.
Operation
The indicator lamps 3 through 6 will illumi-
nate to show the current position of the ve-
hicle. Flashing indicator lamps will show a
position which the system is working to
achieve. When raising, if multiple indicator
lamps are flashing on the “UP” button, the
highest flashing indicator lamp is the posi-
tion the system is working to achieve. Whenlowering, if multiple indicators are flashing
on the "DOWN" button the lowest solid indi-
cator lamp is the position the system is work-
ing to achieve.
Pushing the “UP” button once will move the
suspension one position higher from the cur-
rent position, assuming all conditions are
met (i.e. engine running, speed below thresh-
old, etc). The “UP” button can be pushed
multiple times, each push will raise the re-
quested level by one position up to a maxi-
mum position of OR2 or the highest position
allowed based on current conditions (i.e. ve-
hicle speed, etc).
Pushing the “DOWN” button once will move
the suspension one position lower from the
current level, assuming all conditions are met
(i.e. engine running, doors closed, speed be-
low threshold, etc). The “DOWN” button can
be pressed multiple times. Each push will
lower the requested level by one position
down to a minimum of Park Mode or the
lowest position allowed based on current con-
ditions (i.e. vehicle speed, etc.)Automatic height changes will occur based
on vehicle speed and the current vehicle
height. The indicator lamps and instrument
cluster display messages will operate the
same for automatic changes and user re-
quested changes.
• Off-Road 2 (OR2) – Indicator lamps 4, 5,
and 6 will be illuminated when the vehicle
is in OR2.
• Off-Road 1 (OR1) – Indicator lamps 4 and
5 will be illuminated when the vehicle is in
OR1.
• Normal Ride Height (NRH) – Indicator
lamp 4 will be illuminated when the vehicle
is in this position.
• Entry/Exit Mode – Indicator lamp 3 will be
illuminated when the vehicle is in Entry/
Exit Mode. If Entry/Exit Mode is requested
while vehicle speed is between 15 mph
(24 km/h) and 25 mph (40 km/h), indicator
lamp 4 will remain on solid and indicator
lamp 3 will flash as the system waits for the
vehicle to reduce speed. If vehicle speed is
reduced to, and kept below, 15 mph
(24 km/h) indicator lamp 4 will turn off and
indicator lamp 3 will flash until Entry/Exit
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Mode is achieved at which point indicator
lamp 3 will go solid. If during the height
change to Entry/Exit Mode, the vehicle
speed exceeds 15 mph (24 km/h), the
height change will be paused until the
vehicle speed either goes below 15 mph
(24 km/h) and the height change continues
to Entry/Exit Mode, or exceeds 25 mph
(40 km/h) and the vehicle height will return
to NRH. Entry/Exit Mode may be selected
while the vehicle is not moving provided
that the engine is still running and all doors
remain closed.
• Transport Mode - No indicator lamps will be
illuminated. Customer driving will disable
Transport Mode.
• Tire/Jack Mode - Indicator lamps 3 and
6 will be illuminated. Customer driving will
disable Tire/Jack Mode.
• Wheel Alignment Mode - Indicator lamps
3 and 4 will be illuminated. Customer driv-
ing will disable Wheel Alignment Mode.SELEC-TERRAIN — IF
EQUIPPED
Selec-Terrain Mode Selection
Selec-Terrain combines the capabilities of
the vehicle control systems, along with driver
input, to provide the best performance for all
terrains.
Selec-Terrain consists of the following positions:
•Snow–Tuning set for additional stability in
inclement weather. Use on and off road on
loose traction surfaces such as snow. When in
Snow mode (depending on certain operating
conditions), the transmission may use second
gear (rather than first gear) during launches, to
minimize wheel slippage. If equipped with air
suspension, the default ride height for Snow is
Normal Ride Height (NRH).
•Auto– Fully automatic full time four-wheel
drive operation can be used on and off road.
Balances traction with seamless steering
feel to provide improved handling and ac-
celeration over two-wheel drive vehicles. If
equipped with air suspension, the level will
change to Normal Ride Height (NRH).
•Sand– Off road calibration for use on low
traction surfaces such as sand or wet grass.
Driveline is maximized for traction. Some
binding may be felt on less forgiving sur-
faces. The electronic brake controls are set
to limit traction control management of
throttle and wheel spin. If equipped with
air suspension, the default ride height for
Sand is Normal Ride Height (NRH).
Selec-Terrain Switch
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158

•Track– Track road calibration for use on
high traction surfaces. Driveline is maxi-
mized for traction. Some binding may be
felt on less forgiving surfaces. This feature
will reset to AUTO on an ignition cycle.
•To w– Use this mode for towing and hauling
heavy loads. Vehicle suspension will go to
sport mode. Trailer sway control is enabled
in the ESC system. This feature will reset to
AUTO upon an ignition cycle.
Custom
This mode allows the driver to create a cus-
tom vehicle configuration that is saved for
quick selection of favorite settings. The sys-
tem will return to AUTO mode when the
ignition switch is cycled from RUN to OFF to
RUN, if this mode is selected. While in Cus-
tom Mode the Stability, Transmission, Steer-
ing, Suspension, all-wheel drive set up, and
Paddle shifter settings may be configured
through the custom mode set-up.
NOTE:
Refer to “SRT Drive Modes” in the “Multime-
dia” section in your Owner’s Manual for fur-
ther information.
Active Damping System
This vehicle is equipped with an electronic
controlled damping system. This system re-
duces body roll and pitch in many driving
situations including cornering, acceleration
and braking. There are 3 modes:
•Street Mode(Available in terrain positions
AUTO, SNOW and CUSTOM.) — Used dur-
ing highway speeds where a touring sus-
pension feel is desired.
•Sport Mode(Available in terrain positions
AUTO, SPORT, CUSTOM and TOW.) — Pro-
vides a firm suspension for better handling.
•Track Mode(Available in terrain positions
AUTO, TRACK and CUSTOM.) — Provides
a full firm suspension for an aggressive
track experience.
Refer to “SRT Drive Modes” in the “Multime-
dia” section in your Owner’s Manual for fur-
ther information.
Launch Control— If Equipped
This vehicle is equipped with a Launch Con-
trol system that is designed to allow the driver
to achieve maximum vehicle acceleration in astraight line. Launch Control is a form of
traction control that manages tire slip while
launching the vehicle. This feature is in-
tended for use during race events on a closed
course where consistent quarter mile and
zero to sixty times are desired. The system is
not intended to compensate for lack of driver
experience or familiarity with the race track.
Use of this feature in low traction (cold, wet,
gravel, etc.) conditions may results in excess
wheel slip outside this systems control result-
ing in an aborted launch.
Preconditions:
• Launch Control should not be used on pub-
lic roads. Always check track conditions
and the surrounding area.
• Launch Control is not available within the
first 500 miles (805 km) of engine break-
in.
• Launch Control should only be used when
the engine and transmission are at operat-
ing temperature.
• Launch Control is intended to be used on
dry, paved road surfaces only.
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160

CAUTION!
Use on slippery or loose surfaces may
cause damage to vehicle components and
is not recommended.
Launch Control is only available when the
following procedure is followed:
NOTE:
Pushing the SRT button on the Select-Track
switch or pressing the “Apps” button on the
touchscreen are the two options to access
launch control features. Please refer to “SRT
Drive Modes” in “Multimedia” in your Own-
er’s Manual for further information.
1. Press the “Race Options” button on the
touchscreen or push the LAUNCH button
on the Select-Track switch.
2. Press the “Launch RPM Set-Up” button
on the touchscreen. This screen will allow
you to adjust your launch RPM’s for opti-
mum launch/traction.
3. Press the “Activate Launch Control” but-
ton on the touchscreen, follow instruc-
tions in the instrument cluster display.• Make sure the vehicle is not moving.
• Put vehicle in first gear.
• Steering wheel must be pointing
straight.
• Vehicle must be on level ground.
• Apply brake pressure.
• While holding the brake, rapidly apply
and hold the accelerator pedal to wide
open throttle. The engine speed will
hold at the RPM that was set in the
“Launch RPM Set-up” screen.
NOTE:
Messages will appear in the instrument
cluster display to inform the driver if one
or more of the above conditions have not
been met.
4. When the above conditions have been
met, the instrument cluster display will
read “Release Brake”.
5. Keep the vehicle pointed straight.Launch control will be active until the vehicle
reaches 62 mph (100 km/h), at which point
the Electronic Stability Control (ESC) system
will return to its current ESC mode.
Launch control will abort before launch
completion, display “Launch Aborted” in the
cluster under any the following conditions:
• The accelerator pedal is released during
launch.
• The ESC system detects that the vehicle is
no longer moving in a straight line.
• The “ESC OFF” button is pressed to change
the system to another mode.
NOTE:
After launch control has been aborted, ESC
will return to its current ESC mode.
CAUTION!
Do not attempt to shift when the drive
wheels are spinning and do not have trac-
tion. Damage to the transmission may oc-
cur.
161