2018 JEEP GRAND CHEROKEE tow

Quadra-Trac II Operating Instructions/
Precautions — If Equipped
The Quadra-Trac II transfer case is fully au-
tomatic in the normal driving 4WD AUTO
mode. The Quadra-Trac II transfer case pro-
vides three mode positions:
• 4WD HI
• NEUTRAL
• 4WD LOW
This transfer case is fully automatic in the
4WD HI mode.
When additional traction is required, the
4WD LOW position can be used to lock the
front and rear driveshafts together and force
the front and rear wheels to rotate at the
same speed. The 4WD LOW position is in-
tended for loose, slippery road surfaces only.
Driving in the 4WD LOW position on dry,
hard-surfaced roads may cause increased tire
wear and damage to driveline components.When operating your vehicle in 4WD LOW,
the engine speed is approximately three
times that of the 4WD HI position at a given
road speed. Take care not to overspeed the
engine and do not exceed 25 mph (40 km/h).
Proper operation of four-wheel drive vehicles
depends on tires of equal size, type, and
circumference on each wheel. Any difference
will adversely affect shifting and cause dam-
age to the transfer case.
Because four-wheel drive provides improved
traction, there is a tendency to exceed safe
turning and stopping speeds. Do not go faster
than road conditions permit.
WARNING!
You or others could be injured or killed if
you leave the vehicle unattended with the
transfer case in the NEUTRAL position
without first fully engaging the parking
brake. The transfer case NEUTRAL posi-
tion disengages both the front and rear
drive shafts from the powertrain and will
allow the vehicle to roll, even if the trans-
mission is in PARK. The parking brake
WARNING!
should always be applied when the driver
is not in the vehicle.
Shift Positions
For additional information on the appropriate
use of each 4WD system mode position, see
the information below:
4WD AUTO
This range is used on surfaces such as ice,
snow, gravel, sand, and dry hard pavement.
NOTE:
Refer to “Selec-Terrain — If Equipped” fur-
ther on in this section for further information
on the various positions and their intended
usages.
NEUTRAL
This range disengages the driveline from the
powertrain. It is to be used for flat towing
behind another vehicle. Refer to “Recre-
ational Towing” in “Starting And Operating”
for further information.
STARTING AND OPERATING
150

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
153

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.
STARTING AND OPERATING
156

•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.
STARTING AND OPERATING
160

WARNING!
limited upon adverse sight distance con-
ditions.
• Does not always fully recognize complex
driving conditions, which can result in
wrong or missing distance warnings.
• Will bring the vehicle to a complete stop
while following a target vehicle and hold
the vehicle for 2 seconds in the stop
position. If the target vehicle does not
start moving within two seconds the ACC
system will display a message that the
system will release the brakes and that
the brakes must be applied manually. An
audible chime will sound when the
brakes are released.
You should switch off the ACC system:
• When driving in fog, heavy rain, heavy
snow, sleet, heavy traffic, and complex
driving situations (i.e., in highway con-
struction zones).
• When entering a turn lane or highway off
ramp; when driving on roads that are
winding, icy, snow-covered, slippery, or
have steep uphill or downhill slopes.
WARNING!
• When towing a trailer up or down steep
slopes.
• When circumstances do not allow safe
driving at a constant speed.
The Cruise Control system has two control
modes:
• Adaptive Cruise Control mode for main-
taining an appropriate distance between
vehicles.
• Normal (Fixed Speed) Cruise Control
mode for cruising at a constant preset
speed. For additional information, refer
to “Normal (Fixed Speed) Cruise Control
Mode” in your Owner’s Manual.
Normal (Fixed Speed) Cruise Control will
not react to preceding vehicles. Always be
aware of the mode selected.
You can change the mode by using the
Cruise Control buttons. The two control
modes function differently. Always con-
firm which mode is selected.
PARKSENSE REAR PARK
ASSIST
ParkSense Sensors
The four ParkSense sensors, located in the
rear fascia/bumper, monitor the area behind
the vehicle that is within the sensors’ field of
view. The sensors can detect obstacles from
approximately 12 inches (30 cm) up to
79 inches (200 cm) from the rear fascia/
bumper in the horizontal direction, depend-
ing on the location, type and orientation of
the obstacle.
Activation/Deactivation ParkSense
ParkSense can be enabled and disabled with
the ParkSense switch
.
When the ParkSense switch is pushed to
disable the system, the instrument cluster
display will show the “PARKSENSE OFF”
message for approximately five seconds. Re-
fer to “Instrument Cluster Display” in “Get-
ting To Know Your Instrument Panel” in the
Owner’s Manual for more information. When
the gear selector is moved to REVERSE and
STARTING AND OPERATING
170

WARNING!
• Drivers must be careful when backing up
even when using ParkSense. Always
check carefully behind your vehicle,
look behind you, and be sure to check
for pedestrians, animals, other vehicles,
obstructions, and blind spots before
backing up. You are responsible for
safety and must continue to pay atten-
tion to your surroundings. Failure to do
so can result in serious injury or death.
• Before using ParkSense, it is strongly
recommended that the ball mount and
hitch ball assembly is disconnected
from the vehicle when the vehicle is not
used for towing. Failure to do so can
result in injury or damage to vehicles or
obstacles because the hitch ball will be
much closer to the obstacle than the
rear fascia when the loudspeaker sounds
the continuous tone. Also, the sensors
could detect the ball mount and hitch
ball assembly, depending on its size and
shape, giving a false indication that an
obstacle is behind the vehicle.
CAUTION!
• ParkSense is only a parking aid and it is
unable to recognize every obstacle, in-
cluding small obstacles. Parking curbs
might be temporarily detected or not
detected at all. Obstacles located above
or below the sensors will not be detected
when they are in close proximity.
• The vehicle must be driven slowly when
using ParkSense in order to be able to
stop in time when an obstacle is de-
tected. It is recommended that the
driver looks over his/her shoulder when
using ParkSense.
PARKSENSE FRONT AND
REAR PARK ASSIST
ParkSense Sensors
The four ParkSense sensors, located in the
rear fascia/bumper, monitor the area behind
the vehicle that is within the sensors field of
view. The sensors can detect obstacles from
approximately 12 inches (30 cm) up to79 inches (200 cm) from the rear fascia/
bumper in the horizontal direction, depend-
ing on the location, type and orientation of
the obstacle.
The six ParkSense sensors, located in the
front fascia/bumper, monitor the area in front
of the vehicle that is within the sensors’ field
of view. The sensors can detect obstacles
from approximately 12 inches (30 cm) up to
47 inches (120 cm) from the front fascia/
bumper in the horizontal direction, depend-
ing on the location, type and orientation of
the obstacle.
When an object is detected within 79 inches
(200 cm) behind the rear bumper while the
vehicle is in REVERSE, a warning will appear
in the instrument cluster display. In addition
a chime will sound (when Sound and Display
is selected from the Customer Programmable
Features section of the Uconnect System
screen). As the vehicle moves closer to the
object, the chime rate will change from single
1/2 second tone (for rear only), to slow (for
rear only), to fast, to continuous.
STARTING AND OPERATING
172

Activation/Deactivation
The ParkSense Park Assist system provides
visual and audible indications of the distance
between the rear and/or front fascia and a
detected obstacle when backing up or moving
forward, e.g. during a parking maneuver. If
your vehicle is equipped with an Automatic
Transmission, the vehicle brakes may be au-
tomatically applied and released when per-
forming a reverse parking maneuver if the
system detects a possible collision with an
obstacle.
ParkSense can be active only when the gear
selector is in REVERSE or DRIVE. If
ParkSense is enabled at one of these gear
selector positions, the system will remain
active until the vehicle speed is increased to
approximately 7 mph (11 km/h) or above. A
display warning will appear in the instrument
cluster display indicating the vehicle is aboveParkSense operating speed. The system will
become active again if the vehicle speed is
decreased to speeds less than approximately
6 mph (9 km/h).
Engagement/Disengagement
To disengage the system, push the ParkSense
switch, located on the switch panel below the
Uconnect display.
When the system passes from engaged to
disengaged and vice versa, it is always ac-
companied by a dedicated message in the
instrument cluster display.
System engaged:ParkSense switch LED off.
System disengaged:ParkSense switch LED on
constantly.
The ParkSense switch LED lights up also in
the case of a ParkSense system failure. If the
button is pushed with a system failure, the
ParkSense switch LED flashes for about five
seconds, then it stays on constantly.After the ParkSense has been disengaged, it
will stay in this condition until the following
engagement, even if the ignition device
passes from ON/RUN to OFF and then again
to ON/RUN.Operation With A Trailer
The operation of the sensors is automatically
deactivated when the trailer's electric plug is
inserted in the vehicle's tow hook socket. The
sensors are automatically reactivated when
the trailer's cable plug is removed.
General Warnings
If “PARKSENSE UNAVAILABLE WIPE REAR
SENSORS" or "PARKSENSE UNAVAILABLE
WIPE FRONT SENSORS” appears in the in-
strument cluster display, clean the
ParkSense sensors with water, car wash soap
and a soft cloth. Do not use rough or hard
cloths. Do not scratch or poke the sensors.
Otherwise, you could damage the sensors.
173

TRAILER TOWING
Trailer Towing Weights (Maximum Trailer
Weight Ratings) — Non SRT
The following chart provides the maximum
trailer weight ratings towable for your given
drivetrain.
Engine/TransmissionMax. GTW (Gross Trailer Wt.) — with
Trailer BrakeMax. GTW (Gross Trailer Wt.) — without
Trailer BrakeTongue Wt. (See Note)
3.6L Gasoline — Standard
Cooling System3,500 lbs (1,588 kg) 1,653 lbs (750 kg) 174 lbs (79 kg)
3.6L Gasoline — Heavy
Duty Cooling System6,200 lbs (2,812 kg) 1,653 lbs (750 kg) 310 lbs (141 kg)
5.7L Gasoline — Standard
Cooling System5,000 lbs (2,268 kg) 1,653 lbs (750 kg) 250 lbs (113 kg)
5.7L Gasoline — Heavy
Duty Cooling System (ex-
cept Summit)7,716 lbs (3,500 kg) 1,653 lbs (750 kg) 386 lbs (175 kg)
5.7L Gasoline — Summit
Models With Heavy Duty
Cooling System6,500 lbs (2,949 kg) 1,653 lbs (750 kg) 386 lbs (175 kg)
185