2023 JEEP GRAND CHEROKEE suspension

142STARTING AND OPERATING
(Continued)
CRUISE CONTROL SYSTEMS
Your vehicle is equipped with the Adaptive Cruise
Control (ACC) system which will adjust the vehicle
speed up to the preset speed to maintain a
distance with the vehicle ahead.
NOTE:In vehicles NOT equipped with the Active Driving
Assist (ADA) system:
Fixed Speed Cruise Control can be used when
ACC is not enabled, and functions as normal
cruise control.
Fixed Speed Cruise Control will not detect vehi -
cles directly ahead of you. Always be aware of
the feature selected.
Only one Cruise Control feature can operate at a
time. For example, if Fixed Speed Cruise Control
is enabled, Adaptive Cruise Control will be
unavailable, and vice versa.
ADAPTIVE CRUISE CONTROL (ACC)
Adaptive Cruise Control (ACC) increases the driving
convenience provided by Cruise Control while
traveling on highways and major roadways.
However, it is not a safety system and not designed
to prevent collisions. ACC will allow you to keep Cruise Control engaged
in light to moderate traffic conditions without the
constant need to reset your Cruise Control. ACC
utilizes a radar sensor and a forward facing
camera designed to detect a vehicle directly ahead
of you.
NOTE:
If the ACC sensor detects a vehicle ahead, ACC
will apply limited braking or acceleration (not to
exceed the original set speed) automatically to
maintain a preset following distance, while
matching the speed of the vehicle ahead.
Any chassis/suspension or tire size modifica
-
tions to the vehicle will affect the performance
of the Adaptive Cruise Control and Forward Colli -
sion Warning system.
In vehicles NOT equipped with the Active Driving
Assist system, Fixed Speed Cruise Control (ACC
not enabled) will not detect vehicles directly
ahead of you. Always be aware of the feature
selected Ú page 408.
WARNING!
Adaptive Cruise Control (ACC) is a conve -
nience system. It is not a substitute for active
driver involvement. It is always the driver’s
responsibility to be attentive of road, traffic,
and weather conditions, vehicle speed,
distance to the vehicle ahead and, most
importantly, brake operation to ensure safe
operation of the vehicle under all road condi -
tions. Your complete attention is always
required while driving to maintain safe control
of your vehicle. Failure to follow these warn -
ings can result in a collision and death or
serious personal injury.
The ACC system:
Does not react to pedestrians, oncoming
vehicles, and stationary objects (e.g., a
stationary vehicle in a traffic jam or a
disabled vehicle).

Cannot take street, traffic, and weather
conditions into account, and may be limited
upon adverse sight distance conditions.

Does not always fully recognize complex
driving conditions, which can result in
wrong or missing distance warnings.

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STARTING AND OPERATING159
If the suspension alignment is not correct, if the
vehicle is modified (e.g. lifting or lowering the
suspension, installing different sized wheels or
tires) or if there has been damage due to road
hazards
Driving near highway toll booths
NOTE:If damage to the windshield occurs, have the wind -
shield replaced by an authorized dealer as soon as
possible.
PARKSENSE FRONT/REAR PARK ASSIST
SYSTEM — IF EQUIPPED
The ParkSense Park Assist system provides visual
and audible indications of the distance between
the rear, and if equipped, the front fascia/bumper
and a detected obstacle when backing up or
moving forward (e.g. during a parking maneuver).
The vehicle brakes may be automatically applied
and released when performing a reverse parking
maneuver if the system detects a possible collision
with an obstacle.
NOTE:
The driver can disable the automatic braking
function by turning ParkSense off via the
ParkSense switch. The driver can also override
automatic braking by changing the gear or by
pressing the gas pedal over 90% of its capacity
during the braking event.
Automatic brakes are not available if the vehicle
is in 4WD Low.
Automatic brakes will not be available if there is
a faulted condition detected with the ParkSense
Park Assist system or the Braking System
Module.
The automatic braking function may only be
applied if the vehicle deceleration is not enough
to avoid colliding with a detected obstacle.
The automatic braking function may not be
applied fast enough for obstacles that move
toward the rear of the vehicle from the left and/
or right sides.
The automatic braking function can be
enabled/disabled from the Customer Program -
mable Features section of the Uconnect system.
ParkSense will retain its last known configura -
tion state for the automatic braking function
through ignition cycles.
The automatic braking function is intended to
assist the driver in avoiding possible collisions with
detected obstacles when backing up in REVERSE
gear.
NOTE:
The system is designed to assist the driver and
not to substitute the driver.
The driver must stay in full control of the
vehicle's acceleration and braking and is
responsible for the vehicle's movements.
4

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184STARTING AND OPERATING
2. Insert the fuel nozzle fully into the filler pipe – the nozzle opens and holds the flapper doors
while refueling.

Fuel Filler

3. Fill the vehicle with fuel – when the fuel nozzle “clicks” or shuts off the fuel tank is full.
4. Wait five seconds before removing the fuel nozzle to allow fuel to drain from nozzle.
5. Remove the fuel nozzle and close the fuel door. Engage the fuel door latch by pushing on
the rear outer edge near the center.
VEHICLE LOADING
GROSS VEHICLE WEIGHT RATING
(GVWR)
The GVWR is the total permissible weight of your
vehicle including driver, passengers, vehicle,
options and cargo. The Vehicle Certification Label
specifies maximum capacities of front and rear axle systems (GAWR). Total load must be limited so
GVWR and front and rear GAWR are not exceeded.
PAYLOAD
The payload of a vehicle is defined as the allowable
load weight a truck can carry, including the weight
of the driver, all passengers and cargo.
GROSS AXLE WEIGHT RATING (GAWR)
The GAWR is the maximum permissible load on the
front and rear axles. The load must be distributed
in the cargo area so that the GAWR of each axle is
not exceeded.
Each axle GAWR is determined by the components
in the system with the lowest load carrying capacity
(axle, springs, tires or wheels). Heavier axles or
suspension components sometimes specified by
purchasers for increased durability do not
necessarily increase the vehicle's GVWR.
TIRE SIZE
The tire size on the Vehicle Certification Label
represents the actual tire size on your vehicle.
Replacement tires must be equal to the load
capacity of this tire size.
RIM SIZE
This is the rim size that is appropriate for the tire
size listed.
WARNING!
Never have any smoking materials lit in or
near the vehicle when the fuel door is open or
the tank is being filled.
Never add fuel when the engine is running.
This is in violation of most state and federal
fire regulations and may cause the Malfunc
-
tion Indicator Light to turn on.
A fire may result if fuel is pumped into a
portable container that is inside of a vehicle.
You could be burned. Always place fuel
containers on the ground while filling.
CAUTION!
To avoid fuel spillage and overfilling, do not “top
off” the fuel tank after filling.

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STARTING AND OPERATING187
RECOMMENDED DISTRIBUTION HITCH
ADJUSTMENT

1. Verify that the vehicle is at the Normal Ride
Height.

NOTE:The vehicle must remain in the engine run position
with all doors closed while attaching a trailer for
proper leveling of the air suspension system.
2. Position the vehicle to be ready to connect to the trailer (do not connect the trailer). 3. For vehicles equipped with Quadra-Lift air
suspension, use the touchscreen radio
settings to enable Tire/Jack mode. Tire/Jack
mode will be canceled and the procedure must
be restarted if the vehicle is driven at speeds
above 5mph (8 km/h).
4. Measure the height from the top of the front wheel opening on the fender to ground; this is
height H1.

Measuring Height (H)

5. Attach the trailer to the vehicle without the weight distribution bars connected.
6. Measure the height from the top of the front wheel opening on the fender to the ground;
this is height H2. 7. Install and adjust the tension in the weight
distributing bars per the manufacturer’s
recommendations so that the height of the
front fender is approximately (H2-H1)/2+H1
(about 1/2 the difference between H2 and H1
above Normal Ride Height [H1]).
8. Use the touchscreen radio settings and switch off Tire/Jack mode. Make sure the truck
returns to Normal Ride Height. Perform a
visual inspection of the trailer and
weight-distributing hitch to confirm the
manufacturers’ recommendations have been
met.
9. The vehicle can now be driven.
An improperly adjusted weight-distributing
hitch system may reduce handling, stability,
braking performance, and could result in a
collision.
Weight-distributing systems may not be
compatible with surge brake couplers. Consult
with your hitch and trailer manufacturer or a
reputable Recreational Vehicle dealer for
additional information.
WARNING!
Measurement Example Example Height (mm)
H1
925
H2 946
H2-H1 21
(H2-H1)/2 10.5
(H2-H1)/2 + H1 935.5
4

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192STARTING AND OPERATING
(Continued)
(Continued)
TOWING REQUIREMENTS
To promote proper break-in of the new vehicle
drivetrain components, the following guidelines
are recommended.
Perform the maintenance listed in the Scheduled
Servicing Ú
page 330. When towing a trailer,
never exceed the GAWR or GCWR ratings.
Towing Requirements — Tires
Do not attempt to tow a trailer while using a
compact spare tire.
Do not drive more than 50 mph (80 km/h) when
towing while using a full size spare tire.
Proper tire inflation pressures are essential to
the safe and satisfactory operation of your
vehicle.
Check the trailer tires for proper tire inflation
pressures before trailer usage.
Check for signs of tire wear or visible tire
damage before towing a trailer.
Replacing tires with a higher load carrying
capacity will not increase the vehicle's GVWR
and GAWR limits.
For further information Ú page 374.
CAUTION!
Do not tow a trailer at all during the first
500 miles (805 km) the new vehicle is driven.
The engine, axle or other parts could be
damaged.
Then, during the first 500 miles (805 km) that
a trailer is towed, do not drive over 50 mph
(80 km/h) and do not make starts at full
throttle. This helps the engine and other parts
of the vehicle wear in at the heavier loads.
WARNING!
Make certain that the load is secured in the
trailer and will not shift during travel. When
trailering cargo that is not fully secured,
dynamic load shifts can occur that may be
difficult for the driver to control. You could lose
control of your vehicle and have a collision.

When hauling cargo or towing a trailer, do not
overload your vehicle or trailer. Overloading can
cause a loss of control, poor performance or
damage to brakes, axle, engine, transmission,
steering, suspension, chassis structure or tires.

Safety chains must always be used between
your vehicle and trailer. Always connect the
chains to the hook retainers of the vehicle
hitch. Cross the chains under the trailer
tongue and allow enough slack for turning
corners.
Vehicles with trailers should not be parked on
a grade. When parking, apply the parking
brake on the tow vehicle. Put the tow vehicle
transmission in PARK (P). For four-wheel drive
vehicles, make sure the transfer case is not in
NEUTRAL (N). Always, block or "chock" the
trailer wheels.
GCWR must not be exceeded.
Total weight must be distributed between the
tow vehicle and the trailer such that the
following four ratings are not exceeded :
GVWR
GTW
WARNING!
GAWR
Tongue weight rating for the trailer hitch
utilized
WARNING!

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196STARTING AND OPERATING
RECREATIONAL TOWING — TWO-WHEEL
D
RIVE MODELS
DO NOT flat tow this vehicle. Damage to the
drivetrain will result.
Recreational towing (for two-wheel drive models) is
allowed ONLY if the rear wheels are OFF the
ground. This may be accomplished using a tow
dolly or vehicle trailer. If using a tow dolly, follow
this procedure:

1. Properly secure the dolly to the tow vehicle,
following the dolly manufacturer's
instructions.

2. Drive the rear wheels onto the tow dolly.
3. Apply the Electric Park Brake. Shift the transmission into PARK.
4. Turn the ignition OFF.
5. Properly secure the rear wheels to the dolly, following the dolly manufacturer’s
instructions.
6. Install a suitable clamping device, designed for towing, to secure the front wheels in the
straight position.
RECREATIONAL TOWING —
Q
UADRA-TRAC I (SINGLE-SPEED
T
RANSFER CASE WITHOUT 4WD LOW
R
ANGE) FOUR-WHEEL DRIVE MODELS
Recreational towing is not allowed. These models
do not have a N (NEUTRAL) position in the transfer
case.
NOTE:This vehicle may be towed on a flatbed or vehicle
trailer provided all four wheels are OFF the ground.
RECREATIONAL TOWING —
Q
UADRA–TRAC II WITH 4WD LOW
R
ANGE
The transfer case must be shifted into N
(NEUTRAL) and the transmission must be in PARK
(P) for recreational towing. The N (NEUTRAL)
selection button is adjacent to the air suspension
switch. Shifts into and out of transfer case N
(NEUTRAL) can take place with the selector switch
in any mode position.
NOTE:
Ensure vehicle is set to Normal Ride Height - if
equipped Ú page 136.
If the vehicle is equipped with Quadra-Lift air
suspension, the engine should be started and
left running for a minimum of 60 seconds (with
all the doors closed) at least once every 24
hours. This process allows the air suspension to
adjust the vehicle’s ride height to compensate
for temperature effects.
CAUTION!
Towing with the rear wheels on the ground will
cause severe transmission damage. Damage
from improper towing is not covered under the
New Vehicle Limited Warranty.
CAUTION!
Towing this vehicle in violation of the above
requirements can cause severe transmission
and/or transfer case damage. Damage from
improper towing is not covered under the New
Vehicle Limited Warranty.

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STARTING AND OPERATING197
Shifting Into Transfer Case N (NEUTRAL)
Use the following procedure to prepare your
vehicle for recreational towing:

1. Bring the vehicle to a complete stop on level
ground, 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 with the Auto Entry/Exit
setting deselected.
NOTE:
Steps 1 through 4 are requirements that
must be met before pushing the N
(NEUTRAL) button, and must continue to be
met until the shift has been completed. If
any of these requirements are not met
before pushing the N (NEUTRAL) button or
are no longer met during the shift, then the
N (NEUTRAL) indicator light will flash contin -
uously until all requirements are met or until
the N (NEUTRAL) button is released.
The ignition must be in the ON/RUN position
for a shift to take place and for the position
indicator lights to be operable. If the ignition
is not in the ON/RUN position, the shift will
not take place and no position indicator
lights will be on or flashing.
A flashing N (NEUTRAL) position indicator
light indicates that shift requirements have
not been met.
CAUTION!
DO NOT dolly tow any 4WD vehicle. Towing
with only one set of wheels on the ground
(front or rear) will cause severe transmission
and/or transfer case damage. Tow with all
four wheels either ON the ground, or OFF the
ground (using a vehicle trailer).
Tow only in a forward direction. Towing this
vehicle backwards can cause severe damage
to the transfer case.
The transmission must be in PARK for recre -
ational towing.
Before recreational towing, perform the proce -
dure outlined under “Shifting into N
(NEUTRAL)” to be certain that the transfer
case is fully in N (NEUTRAL). Otherwise,
internal damage will result.
Towing this vehicle in violation of the above
requirements can cause severe transmission
and/or transfer case damage. Damage from
improper towing is not covered under the New
Vehicle Limited Warranty.
Do not use a bumper-mounted clamp-on tow
bar on your vehicle. The bumper face bar will
be damaged.
WARNING!
You or others could be injured or killed if you
leave the vehicle unattended with the transfer
case in the N (NEUTRAL) position without first
fully engaging the Electric Park Brake. The
transfer case N (NEUTRAL) position disengages
both the front and rear driveshafts from the
powertrain and will allow the vehicle to roll, even
if the transmission is in PARK. The Electric Park
Brake should always be applied when the driver
is not in the vehicle.
CAUTION!
It is necessary to follow these steps to be certain
that the transfer case is fully in N (NEUTRAL)
before recreational towing to prevent damage to
internal parts.
4

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198STARTING AND OPERATING
If the vehicle is equipped with Quadra-Lift
air suspension, the engine should be
started and left running for a minimum of
60 seconds (with all the doors closed) at
least once every 24 hours. This process
allows the air suspension to adjust the
vehicle’s ride height to compensate for
temperature effects.
Engaging/disengaging of the Electric Park
Brake requires the ignition to be in the ON/
RUN position.
If shift conditions/interlocks are not met, a
“4WD Shift Canceled” or a “4WD Shift
Aborted/ Retry Shift” message will be
displayed on the instrument cluster. To reat -
tempt shift, put the transmission in
NEUTRAL (N) and push and hold the 4WD
LOW button.
If shift conditions/interlocks are not met, a
“To Complete 4WD Shift Put Transmission
In Neutral” or a “To Complete 4WD Shift
Speed Must Be Below 3 MPH” or a “To
Complete 4WD Shift Allow Engine To Return
To Idle” message will flash from the instru -
ment cluster display Ú page 98.
5. Using a ballpoint pen or similar object, push and hold the recessed transfer case N
(NEUTRAL) button (located by the selector
switch) for more than four seconds. The light
behind the N symbol will blink, indicating shift in progress. The light will stop blinking (stay on
solid) when the shift to N (NEUTRAL) is
complete. A “Four Wheel Drive System In
Neutral” message will appear in the
instrument cluster.

N (NEUTRAL) Button

6. After the shift is complete and the N (NEUTRAL) light stays on, release the N
(NEUTRAL) button.
7. Shift the transmission into REVERSE or DRIVE.
8. Release the brake pedal for five seconds and ensure that there is no vehicle movement.
9. Press and hold the brake pedal. Shift the transmission back into NEUTRAL.
10. Apply the Electric Park Brake. 11. With the transmission and transfer case in N
(NEUTRAL), push and hold the ENGINE START/
STOP button until the engine turns off. Ensure
vehicle is in RUN position with the engine off.
12. Place the transmission gear selector in PARK. Release the brake pedal.
13. Attach the vehicle to the tow vehicle using a suitable tow bar.
14. Release the Electric Park Brake. Ensure vehicle is in RUN position with the engine off.
15. Push the ENGINE START/STOP button twice (without pressing the brake pedal), to turn the
ignition to the OFF position.
Shifting Out Of Transfer Case N (NEUTRAL)
Use the following procedure to prepare your
vehicle for normal use:

1. Bring the vehicle to a complete stop, leaving it connected to the tow vehicle.

2. Apply the Electric Park Brake.
3. Start the engine or for 4xe vehicles ensure the vehicle is in Ready to Drive mode, the READY
indicator will appear in the instrument cluster
display.

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