2023 JEEP GRAND CHEROKEE suspension

114GETTING TO KNOW YOUR INSTRUMENT PANEL
also reduces fuel efficiency and tire tread life, and
may affect the vehicle’s handling and stopping
ability.
Please note that the TPMS is not a substitute for
proper tire maintenance, and it is the driver’s
responsibility to maintain correct tire pressure,
even if underinflation has not reached the level to
trigger illumination of the TPMS low tire pressure
telltale.
Your vehicle has also been equipped with a TPMS
malfunction indicator to indicate when the system
is not operating properly. The TPMS malfunction
indicator is combined with the low tire pressure
telltale. When the system detects a malfunction,
the telltale will flash for approximately one minute
and then remain continuously illuminated. This
sequence will continue upon subsequent vehicle
start-ups as long as the malfunction exists. When
the malfunction indicator is illuminated, the
system may not be able to detect or signal low tire
pressure as intended. TPMS malfunctions may
occur for a variety of reasons, including the
installation of replacement or alternate tires or
wheels on the vehicle that prevent the TPMS from
functioning properly. Always check the TPMS
malfunction telltale after replacing one or more
tires or wheels on your vehicle to ensure that the
replacement or alternate tires and wheels allow
the TPMS to continue to function properly.
YELLOW INDICATOR LIGHTS
4WD Low Indicator Light — If Equipped
This light alerts the driver that the vehicle
is in the 4WD Low mode. The front and
rear driveshafts are mechanically locked
together forcing the front and rear
wheels to rotate at the same speed. Low range
provides a greater gear reduction ratio to provide
increased torque at the wheels Ú page 131.
Air Suspension Active Indicator Light —
If Equipped
This light will illuminate when the air
suspension system is actively adjusting
the ride height Úpage 136.
Air Suspension Aerodynamic Height
Indicator Light— If Equipped
This light will illuminate when the air
suspension system is set to the
Aerodynamic setting Ú page 136.
Air Suspension Entry/Exit Indicator Light—
If Equipped
This light will illuminate when the vehicle
is automatically lowered from ride height
position downward for easy entry and exit
of the vehicle.

Air Suspension Off-Road 1 Indicator Light —
If Equipped

This light will illuminate when the air
suspension system is set to the Off-Road
1 setting Úpage 136.

Air Suspension Off-Road 2 Indicator Light —
If Equipped

This light will illuminate when the air
suspension system is set to the Off-Road
2 setting Úpage 136.
CAUTION!
The TPMS has been optimized for the original
equipment tires and wheels. TPMS pressures
and warning have been established for the tire
size equipped on your vehicle. Undesirable
system operation or sensor damage may result
when using replacement equipment that is not
of the same size, type, and/or style. Aftermarket
wheels can cause sensor damage. Using
aftermarket tire sealants may cause the Tire
Pressure Monitoring System (TPMS) sensor to
become inoperable. After using an aftermarket
tire sealant it is recommended that you take
your vehicle to an authorized dealer to have your
sensor function checked.

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STARTING AND OPERATING131
SPORT MODE — IF EQUIPPED

SPORT Mode

Your vehicle is equipped with a Sport Mode
feature. When activated, the engine and
transmission, steering and suspension (if
equipped with air suspension) are all set to their
SPORT settings. Sport Mode will provide improved
throttle response and modified transmission shift
points as well as firmer suspension and steering
for an enhanced driving experience. This mode
may be activated and deactivated by pushing the
SPORT ON button on the instrument panel switch
bank or by selecting SPORT mode using the
Selec-Terrain switch (if equipped). When Sport
Mode has been activated an indicator light will
illuminate in the instrument cluster.
FOUR-WHEEL DRIVE OPERATION
The driveline is equipped with a Front Axle
Disconnect (FAD) for the one-speed and two-speed
drivelines. The FAD operation is fully automated
and controlled by the Drivetrain Control Module
(DTCM). It does not require any customer input to
engage. The FAD is set to connect, disconnect and
provide 4WD function based on certain set
conditions detected by the DTCM, including but not
limited to the following:
Ambient temperature
Wipers
Selec-Terrain Mode selection
Wheel-slip detection
The FAD is actuated only in 4WD HI range and
stays connected for 4WD LOW.
QUADRA-TRAC I OPERATING
I
NSTRUCTIONS/PRECAUTIONS —
I
F EQUIPPED
The Quadra-Trac I is a single-speed (HI range only)
transfer case, which enables on-demand
four-wheel drive with active torque management.
No driver interaction is required. The Brake
Traction Control (BTC) system, which combines
standard ABS and Traction Control, provides
resistance to any wheel that is slipping to allow
additional torque transfer to wheels with traction.
NOTE:The Quadra-Trac I system is not appropriate for
conditions where 4WD LOW range is recom -
mended Ú page 200.
QUADRA-TRAC II OPERATING
I
NSTRUCTIONS/PRECAUTIONS —
I
F EQUIPPED
The Quadra-Trac II system comes equipped with a
customer-selectable electronically operated
on-demand transfer case with active torque
management in all driveable ranges. This transfer
case provides the following operating range
positions:
4WD HI
N (NEUTRAL)
4WD LOW
When additional tractive effort and torque are
required, the 4WD LOW position can be used. The
4WD LOW position is intended 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 normal 4WD HI position at a given road speed.
Take care not to overspeed the engine and do not
exceed 25 mph (40 km/h).
4

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STARTING AND OPERATING133
4WD LOW To 4WD HI

With the vehicle at speeds of 0 to 3 mph (0 to
5 km/h), the ignition switch in the ON position or
the engine running, shift the transmission into
NEUTRAL (N), push and hold the 4WD LOW button
until the 4WD LOW Indicator Light begins to flash
in the instrument cluster. When the shift is
complete, the 4WD LOW Indicator Light will
remain off.

NOTE:
If shift conditions/interlocks are not met —
“4WD Shift Cancelled” or “4WD Shift Aborted/
Retry Shift” message will be displayed on the
instrument cluster. To reattempt 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 instrument cluster display
Úpage 98.

Shifting into or out of 4WD LOW is possible with
the vehicle completely stopped; however, diffi -
culty may occur due to the mating clutch teeth
not being properly aligned. Several attempts
may be required for clutch teeth alignment and shift completion 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.

QUADRA-TRAC II SYSTEM —
I
F EQUIPPED
The Quadra-Trac II System features two torque
transfer couplings. The couplings include an
Electronic Limited-Slip Differential (ELSD) rear axle
and the Quadra-Trac II transfer case. The ELSD
axle is fully automatic and requires no driver input
to operate. Under normal driving conditions, the
unit functions as a standard axle, balancing 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 automatically transfer from the wheel that has
less traction, to the wheel that has traction. While
the transfer case and axle coupling differ in design,
their operation is similar. Follow the Quadra-Trac II
transfer case shifting information, preceding this
section, for shifting this system.
ELECTRONIC SWAY BAR DISCONNECT —
I
F EQUIPPED
Your vehicle may be equipped with an electronic
disconnecting stabilizer/sway bar. This system
allows greater front suspension travel in off-road
situations.
This system is controlled by the SWAY BAR switch
located on the instrument panel (to the right of the
gear selector).

SWAY BAR Switch

4

23_WL_OM_EN_USC_t.book Page 133

134STARTING AND OPERATING
Push the SWAY BAR switch to activate the system.
Push the switch again to deactivate the system.
The Sway Bar Indicator Light (located in the
instrument cluster) will illuminate when the bar is
disconnected. The Sway Bar Indicator Light will
flash during activation transition, or when
activation conditions are not met. The stabilizer/
sway bar should remain in on-road mode during
normal driving conditions.
NOTE:If the electronic disconnecting stabilizer/sway bar
is disconnected and then driven at speeds above
18 mph (29 km/h), the system will reconnect for
driver safety. The Sway Bar Indicator Light will
continue to flash as the system waits for the driver
to slow the vehicle and will automatically
disconnect again unless the driver cancels the
request with the SWAY BAR switch. The system can
cancel the pending disconnect request if drivetrain
changes are made (e.g. 4WD HI to 4WD LOW)
based on road conditions. To disconnect the stabilizer/sway bar, shift to 4WD
LOW and push the SWAY BAR switch to obtain the
off-road position Ú
page 131. The Sway Bar
Indicator Light will flash until the stabilizer/sway
bar has been fully disconnected.
NOTE:The stabilizer/sway bar may be torque locked due
to left and right suspension height differences.
This condition is due to driving surface differences
or vehicle loading. In order for the stabilizer/sway bar to disconnect/reconnect, the right and left
halves of the bar must be aligned. This alignment
may require that the vehicle be driven onto level
ground or rocked from side to side.
To return to on-road mode, push the SWAY BAR
switch again.
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. Tap
the toggle up or down to cycle through the
positions.
WARNING!
Ensure the stabilizer/sway bar is reconnected
before driving on hard surfaced roads or at
speeds above 18 mph (29 km/h); a
disconnected stabilizer/sway bar may contribute
to the loss of vehicle control, which could result
in serious injury. Under certain circumstances,
the front stabilizer/sway bar enhances vehicle
stability and assists with vehicle control. The
system monitors vehicle speed and will attempt
to reconnect the stabilizer/sway bar at speeds
over 18 mph (29 km/h). This is indicated by a
flashing or solid Sway Bar Indicator Light. Once
vehicle speed is reduced below 14 mph
(22 km/h), the system will once again attempt to
return to off-road mode.
WARNING!
If the stabilizer/sway bar will not return to
on-road mode, the Sway Bar Indicator Light will
flash in the instrument cluster and vehicle
stability may be reduced. Do not attempt to drive
the vehicle over 18 mph (29 km/h). Driving
faster than 18 mph (29 km/h) with a
disconnected stabilizer/sway bar may contribute
to the loss of vehicle control, which could result
in serious injury.

23_WL_OM_EN_USC_t.book Page 134

STARTING AND OPERATING135

Selec-Terrain

Selec-Terrain consists of the following positions:
ROCK – Off-road calibration is only available in
4WD LOW. The vehicle is raised (if equipped
with air suspension) for improved ground clear -
ance. Traction-based tuning with improved
steerability for use on high traction off-road
surfaces. Use for low speed obstacles such as
large rocks, deep ruts, etc. If equipped with air
suspension, the vehicle level will change to
Off-Road 2 (OR2). If the Selec-Terrain switch is
in ROCK mode, and the transfer case is
switched from 4WD LOW to 4WD HI, the
Selec-Terrain system will return to AUTO.
SAND/MUD – Off-road calibration for use on low
traction surfaces such as mud or sand. Driveline
is maximized for traction. Some binding may be
felt on less forgiving surfaces. The electronic
brake controls are set to limit traction control
management of throttle and wheel spin. If
equipped with air suspension, the level will
change to Off-Road 1 (OR1).
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 acceleration
over two-wheel drive vehicles. If the suspension
is already in OR1 or OR2, the vehicle will not
lower to NRH with Auto selection as to maintain
capability.
NOTE:If equipped with air suspension, the level will only
raise to Normal Ride Height (NRH) in the AUTO
mode. If the vehicle is in OR1 or OR2 the height will
not lower automatically until defined speed
thresholds are exceeded.
SPORT – This mode is only available in 4WD HI.
When activated, the engine and transmission,
steering and suspension (if equipped with air
suspension) are all set to their SPORT settings.
SPORT mode will provide improved throttle
response and modified transmission shift
points as well as firmer suspension and
steering, the vehicle will also be dropped to Aero
Height for an enhanced driving experience.
When SPORT mode has been activated, an indi -
cator light will illuminate in the instrument
cluster.
INSTRUMENT CLUSTER DISPLAY
M
ESSAGES
When the appropriate conditions exist, a message
will appear in the instrument cluster Ú page 98.
1 — Selec-Terrain Positions
2 — Selec-Terrain Toggle
4

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136STARTING AND OPERATING
QUADRA-LIFT — IF EQUIPPED
DESCRIPTION
The Quadra-Lift Air Suspension system provides
full time load leveling capability along with the
benefit of vehicle height adjustment by a toggle
switch. The vehicle will automatically raise and
lower the ride height to adapt to the appropriate
driving conditions. At higher speeds, the vehicle
will lower to an aerodynamic ride height and when
operating in off-road modes, the vehicle will raise
the ride height accordingly. The buttons near the
terrain switch in the center console area can be
used to set preferred ride height to match the
appropriate conditions.
Quadra-Lift Switch

Off-Road 2 (OR2) (Non-TrailHawk raises the
vehicle approximately 2.4 inches [60 mm])
(TrailHawk raises the vehicle approximately
3.0 inches [75 mm])
– This position is intended
for off-road use only where maximum ground
clearance is required. To enter OR2, push the
UP button twice from the NRH position or once
from the OR1 position while vehicle speed is
below 20 mph (32 km/h). While in OR2, if the
vehicle speed exceeds 25 mph (40 km/h) the
vehicle height will be automatically lowered to
OR1 Ú page 199.
Off-Road 1 (OR1) (Raises the vehicle approxi -
mately 1.6 inches [40 mm]) – This is the
primary position for all off-road driving until OR2
is needed. Push the UP button once from the
NRH position while the vehicle speed is below
38 mph (61 km/h). When in the OR1 position, if
the vehicle speed remains between 40 mph
(64 km/h) and 50 mph (80 km/h) for greater
than 20 seconds or if the vehicle speed exceeds
50 mph (80 km/h), the vehicle will be automat -
ically lowered to NRH Ú page 199.
1 — Off-Road 2 Ride Height Indicator Lamp
(Customer Selectable)
2 — Off-Road 1 Ride Height Indicator Lamp
(Customer Selectable)
3 — Normal Ride Height Indicator Lamp
(Customer Selectable)
4 — Aero Ride Height Indicator Lamp
(Customer Selectable)
5 — Entry/Exit Ride Height Indicator Lamp
(Customer Selectable)
6 — Toggle Switch

23_WL_OM_EN_USC_t.book Page 136

STARTING AND OPERATING137
Normal Ride Height (NRH) 0.0 inches (0 mm) –
This is the standard position of the suspension
and is meant for normal driving.
Aero Height (Lowers the vehicle approximately
-0.8 inches [-21 mm] Front and -1.0 inches
[-25 mm] Rear) – This position provides
improved aerodynamics by lowering the vehicle.
The vehicle will automatically enter Aero when
the vehicle speed remains between 62 mph
(100 km/h) and 66 mph (106 km/h) for greater
than 20 seconds or if the vehicle speed exceeds
66 mph (106 km/h). The vehicle will return to
NRH from Aero if the vehicle speed remains
between 30 mph (48 km/h) and 35 mph
(56 km/h) for greater than 20 seconds or if the
vehicle speed falls below 30 mph (48 km/h).
The vehicle will enter Aero, regardless of vehicle
speed if the vehicle is in SPORT mode.
Entry/Exit Height (Lowers the vehicle approxi -
mately -1.8 inches [-46 mm] Front and
-2.0 inches [-50 mm] Rear) – This position
lowers the vehicle for easier passenger entry
and exit as well as lowering the rear of the
vehicle for easier loading and unloading of
cargo. To enter Entry/Exit, push the DOWN
button twice from NRH while the vehicle speed
is below 4 mph (6 km/h). To exit Entry/Exit,
push the UP button twice while in Entry/Exit or
drive the vehicle over 6 mph (10 km/h).
NOTE:Automatic lowering of the vehicle into Entry/Exit
can be enabled through the Uconnect Touch -
screen Radio by selecting the “Auto Entry/Exit”
setting. 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 is either in Normal or
Aero Height. The vehicle will not automatically
lower to Entry/Exit height if the air suspension level
is in OR2 or OR1. 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 system 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 default Selec-Terrain setting
by normal use of the air suspension buttons
Ú page 134.
The system requires that the engine be running for
all changes. When lowering the vehicle all of the
doors 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 oncoming
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 operates briefly; this is
normal. The system is correcting the position of the
vehicle to ensure a proper appearance.
To assist with changing a spare tire, the
Quadra-Lift Air Suspension system has a feature
which allows the automatic leveling to be disabled
Ú
page 204.
Default Ride Height
Select Aero Height or Normal Ride Height as the
default for all vehicle speeds and operation.
This is the selected height that the suspension
will level for speed changes (e.g. raising from
Entry/Exit Height at speed, lowering from Off
Road Height at speed, etc.).
Default ride height can be changed by manually
adjusting the ride height switch to Normal Ride
Height or Aero Height and staying in the
selected height for 2.5 seconds. It will be stored
as the default ride height and the height will be
maintained until a new default ride height is
selected.
If equipped with a touchscreen radio, all enabling/
disabling of air suspension features must be done
through the radio Ú page 204.
4

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138STARTING AND OPERATING
AIR SUSPENSION MODES
The Air Suspension system has multiple modes to
protect the system in unique situations:
Tire/Jack Mode
To assist with changing a spare tire, the air
suspension system has a feature which allows the
automatic leveling to be disabled Ú page 204.
NOTE:This mode is intended to be enabled with the
ignition on.
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 Úpage 204.
NOTE:This mode is intended to be enabled with the
ignition on. Transport Mode
To assist with flat bed towing, the air suspension
system has a feature which will put the vehicle into
Entry/Exit height and disable the automatic load
leveling system Ú
page 204.
NOTE:This mode is intended to be enabled with the
ignition on.
Suspension Display Messages Mode
The “Suspension Display Messages” setting allows
you to only display suspension warnings
Úpage 204.
NOTE:This mode is intended to be enabled with the
ignition on.
Wheel Alignment Mode
Before performing a wheel alignment this mode
must be enabled Ú page 204.
NOTE:This mode is intended to be enabled with the
ignition on.
If equipped with a touchscreen radio, all enabling/
disabling of air suspension features must be done
through the radio Ú page 204.
INSTRUMENT CLUSTER DISPLAY
M
ESSAGES
When the appropriate conditions exist, a message
will appear in the instrument cluster Ú page 98.
OPERATION
The indicator lamps 1 through 5 will illuminate to
show the current position of the vehicle. Flashing
indicator lamps will show a position which the
system is working to achieve. When raising, if
multiple indicator lamps are flashing while raising,
the highest flashing indicator lamp is the position
the system is working to achieve. When lowering, if
multiple indicators are flashing while lowering, the
lowest solid indicator lamp is the position the
system is working to achieve.
Toggle up once will move the suspension one
position higher from the current position,
assuming all conditions are met (i.e. ignition on,
speed below threshold, etc). Toggle up can be
pushed multiple times. Each toggle up will raise
the requested level by one position up to a
maximum position of OR2 or the highest position
allowed based on current conditions (i.e. vehicle
speed, etc).
Toggle down once will move the suspension one
position lower from the current level, assuming all
conditions are met (i.e. ignition on, doors closed,
speed below threshold, etc). Toggle down can be
WARNING!
The air suspension system uses a high pressure
volume of air to operate the system. To avoid
personal injury or damage to the system, see an
authorized dealer for service.

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