light JEEP GRAND CHEROKEE 2023 Repair Manual
[x] Cancel search | Manufacturer: JEEP, Model Year: 2023, Model line: GRAND CHEROKEE, Model: JEEP GRAND CHEROKEE 2023Pages: 424, PDF Size: 15.48 MB
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116GETTING TO KNOW YOUR INSTRUMENT PANEL
Night Vision Active Indicator Light —
If Equipped
This light alerts the driver that the Night
Vision Warning System status is Active
Úpage 177.
Parking/Headlights On Indicator Light
This indicator light will illuminate when
the parking lights or headlights are
turned on Ú page 57.
Rear Seat Belt Fastened Indicator Light —
If Equipped
This light indicates when a rear seat belt
has been buckled in the second row. A
telltale will display in the upper right
corner of the instrument cluster display
to correspond to the specific seating position once
the seat belt has been buckled Ú page 269.
Sport Mode Indicator Light
This light will turn on when Sport mode is
active.
Stop/Start Active Indicator Light —
If Equipped
This indicator light will illuminate when
the Stop/Start function is in “Autostop”
mode Úpage 140.
Turn Signal/Hazard Indicator Lights
When the left or right turn signal is
activated, the turn signal indicator will
flash independently and the
corresponding exterior turn signal lamps
will flash. Turn signals can be activated when the
multifunction lever is moved down (left) or up
(right).
NOTE:
A continuous chime will sound if the vehicle is
driven more than 1 mile (1.6 km) with either
turn signal on.
Check for an inoperative outside light bulb if
either indicator flashes at a rapid rate.
WHITE INDICATOR LIGHTS
Active Driving Assist On Indicator Light
This light will turn on when the system is
turned on, but is not actively providing
steering to the vehicle.
Adaptive Cruise Control (ACC) Ready
Indicator Light — If Equipped
This light will turn on when ACC has been
turned on, but is not set Ú page 142.
Cruise Control Ready Indicator Light
This indicator light will illuminate when
the cruise control is ready, but not set
Úpage 142.
Hill Descent Control (HDC) Indicator Light —
If Equipped
This indicator shows when the HDC
feature is turned on. The light will be on
solid when HDC is armed. HDC can only
be armed when the transfer case is in the
4WD Low position and the vehicle speed is less
then 30 mph (48 km/h). If these conditions are not
met while attempting to use the HDC feature, the
HDC indicator light will flash on/off.
Rear Seat Unoccupied Indicator Light —
If Equipped
This light indicates when the rear
passenger seats are unoccupied, and will
illuminate in the upper right portion of
the instrument cluster display,
momentarily replacing the configurable corner
information Ú page 249.
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GETTING TO KNOW YOUR INSTRUMENT PANEL117
Selec-Speed Control Indicator Light —
If Equipped
This light will turn on when Selec-Speed
Control is activated.
To activate Selec-Speed Control, assure
the vehicle is 4WD Low and push the button on the
Instrument Panel Ú page 134.
NOTE:If the vehicle is not in 4WD Low, “To Enter
Selec-Speed Shift to 4WD Low” will appear in the
instrument cluster display.
BLUE INDICATOR LIGHTS
High Beam Indicator Light
This indicator light will illuminate to
indicate that the high beam headlights
are on. With the low beams activated,
push the multifunction lever forward
(toward the front of the vehicle) to turn on the high
beams. Pull the multifunction lever rearward
(toward the rear of the vehicle) to turn off the high
beams. If the high beams are off, pull the lever
toward you for a temporary high beam on, “flash to
pass” scenario.
GRAY INDICATOR LIGHTS
Night Vision Suppressed Indicator Light —
If Equipped
This light alerts the driver that the Night
Vision Warning System status is
Suppressed Ú page 177.
ONBOARD DIAGNOSTIC SYSTEM — OBD II
Your vehicle is equipped with a sophisticated
Onboard Diagnostic system called OBD II. This
system monitors the performance of the
emissions, engine, and transmission control
systems. When these systems are operating
properly, your vehicle will provide excellent
performance and fuel economy, as well as engine
emissions well within current government
regulations.
If any of these systems require service, the OBD II
system will turn on the Malfunction Indicator Light
(MIL). It will also store diagnostic codes and other
information to assist your service technician in
making repairs. Although your vehicle will usually
be driveable and not need towing, see an
authorized dealer for service as soon as possible.
ONBOARD DIAGNOSTIC SYSTEM
(OBD II) C
YBERSECURITY
Your vehicle is required to have OBD II and a
connection port to allow access to information
related to the performance of your emissions
controls. Authorized service technicians may need
to access this information to assist with the
diagnosis and service of your vehicle and
emissions system Ú page 203.
CAUTION!
Prolonged driving with the MIL on could cause
further damage to the emission control
system. It could also affect fuel economy and
driveability. The vehicle must be serviced
before any emissions tests can be performed.
If the MIL is flashing while the vehicle is
running, severe catalytic converter damage
and power loss will soon occur. Immediate
service is required.3
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118GETTING TO KNOW YOUR INSTRUMENT PANEL
EMISSIONS INSPECTION AND
MAINTENANCE PROGRAMS
In some localities, it may be a legal requirement to
pass an inspection of your vehicle's emissions
control system. Failure to pass could prevent
vehicle registration. For states that require an Inspection and
Maintenance (I/M), this check verifies
the Malfunction Indicator Light (MIL) is
functioning and is not on when the
engine is running, and that the OBD II system is
ready for testing.
Normally, the OBD II system will be ready. The
OBD II system may not be ready if your vehicle was
recently serviced, recently had a depleted battery
or a battery replacement. If the OBD II system
should be determined not ready for the I/M test,
your vehicle may fail the test.
Your vehicle has a simple ignition actuated test,
which you can use prior to going to the test station.
To check if your vehicle's OBD II system is ready,
you must do the following:
1. Cycle the ignition switch to the ON position, but do not crank or start the engine.
NOTE:If you crank or start the engine, you will have to
start this test over.
2. As soon as you cycle the ignition switch to the ON position, you will see the Malfunction
Indicator Light (MIL) symbol come on as part of
a normal bulb check.
3. Approximately 15 seconds later, one of two things will happen:
The MIL will flash for about 10 seconds and
then return to being fully illuminated until
you turn OFF the ignition or start the engine.
This means that your vehicle's OBD II
system is not ready and you should not
proceed to the I/M station.
The MIL will not flash at all and will remain
fully illuminated until you place the ignition
in the off position or start the engine. This
means that your vehicle's OBD II system is
ready and you can proceed to the I/M
station.
If your OBD II system is not ready, you should see
an authorized dealer or repair facility. If your
vehicle was recently serviced or had a battery
failure or replacement, you may need to do nothing
more than drive your vehicle as you normally would
in order for your OBD II system to update. A
recheck with the previously mentioned test routine
may then indicate that the system is now ready.
Regardless of whether your vehicle's OBD II system
is ready or not, if the MIL is illuminated during
normal vehicle operation you should have your
vehicle serviced before going to the I/M station.
The I/M station can fail your vehicle because the
MIL is on with the engine running.
WARNING!
ONLY an authorized service technician should
connect equipment to the OBD II connection
port in order to read the VIN, diagnose, or
service your vehicle.
If unauthorized equipment is connected to the
OBD II connection port, such as a
driver-behavior tracking device, it may:
Be possible that vehicle systems,
including safety related systems, could be
impaired or a loss of vehicle control could
occur that may result in an accident
involving serious injury or death.
Access, or allow others to access, infor -
mation stored in your vehicle systems,
including personal information.
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STARTING AND OPERATING123
NOTE:A new engine may consume some oil during its first
few thousand miles (kilometers) of operation. This
should be considered a normal part of the break-in
and not interpreted as a problem. Please check
your oil level with the engine oil indicator often
during the break-in period. Add oil as required.
PARKING BRAKE
ELECTRIC PARK BRAKE (EPB)
Your vehicle is equipped with an EPB that offers
simple operation, and some additional features that
make the parking brake more convenient and useful.
The parking brake is primarily intended to prevent
the vehicle from rolling while parked. Before
leaving the vehicle, make sure the parking brake is
applied. Also, be certain to leave the transmission
in PARK.
You can engage the parking brake in two ways:
Manually, by applying the parking brake switch.
Automatically, by enabling the Auto Park Brake
feature in the Customer Programmable
Features section of the Uconnect settings. The parking brake switch is located on the
instrument panel to the left of the steering wheel
(below the headlamp switch).
Electric Park Brake Switch
To apply the parking brake manually, pull up on the
switch momentarily. You may hear a sound from
the back of the vehicle while the parking brake
engages. Once the parking brake is fully engaged,
the BRAKE telltale light in the instrument cluster
and an indicator on the switch will illuminate. If
your foot is on the brake pedal while you apply the
parking brake, you may notice a small amount of
brake pedal movement. The parking brake can be
applied even when the ignition switch is OFF but
the BRAKE telltale light will not illuminate,
however, it can only be released when the ignition
is in the ON/RUN position.
NOTE:The EPB Warning Light will illuminate if the EPB
switch is held for longer than 20 seconds in either
the released or applied position. The light will extin -
guish upon releasing the switch.
If the Auto Park Brake feature is enabled, the
parking brake will automatically engage whenever
the transmission is placed into PARK. If your foot is
on the brake pedal, you may notice a small amount
of brake pedal movement while the parking brake
is engaging.
The parking brake will release automatically when
the ignition is ON, the transmission is in DRIVE or
REVERSE, the driver seat belt is buckled, and an
attempt is made to drive away.
To release the parking brake manually, the ignition
switch must be in the ON/RUN position. Put your
foot on the brake pedal, then push the EPB switch
down momentarily. You may hear a sound from the
back of the vehicle while the parking brake
disengages. You may also notice a small amount of
movement in the brake pedal. Once the parking
brake is fully disengaged, the BRAKE telltale light
in the instrument cluster and the LED indicator on
the switch will extinguish.CAUTION!
Never use non-detergent oil or straight mineral
oil in the engine or damage may result.
4
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124STARTING AND OPERATING
(Continued)
NOTE:When parking on a hill, it is important to turn the
front wheels toward the curb on a downhill grade
and away from the curb on an uphill grade. Apply
the parking brake before placing the gear selector
in PARK, otherwise the load on the transmission
locking mechanism may make it difficult to move
the gear selector out of PARK. If exceptional circumstances should make it
necessary to engage the parking brake while the
vehicle is in motion, maintain upward pressure on
the EPB switch for as long as engagement is
desired. The BRAKE telltale light will illuminate,
and a continuous chime will sound. The rear stop
lamps will also be illuminated automatically while
the vehicle remains in motion.
To disengage the parking brake while the vehicle is
in motion, release the switch. If the vehicle is
brought to a complete stop using the parking
brake, when the vehicle reaches approximately
3 mph, (5 km/h) the parking brake will remain
engaged.
In the unlikely event of a malfunction of the EPB
system, a yellow EPB Warning Light will illuminate.
This may be accompanied by the BRAKE telltale
light flashing. In this event, urgent service of the
EPB system is required. Do not rely on the parking
brake to hold the vehicle stationary.
WARNING!
Never use the PARK position as a substitute
for the parking brake. Always apply the
parking brake fully when parked to guard
against vehicle movement and possible injury
or damage.
When exiting the vehicle, always turn the igni
-
tion OFF, secure the key fob, and lock your
vehicle.
Never leave children alone in a vehicle, or with
access to an unlocked vehicle. Allowing chil -
dren to be in a vehicle unattended is
dangerous for a number of reasons. A child or
others could be seriously or fatally injured.
Children should be warned not to touch the
parking brake, brake pedal or the gear
selector.
Do not leave the key fob in or near the vehicle,
or in a location accessible to children, and do
not leave a vehicle equipped with Keyless
Enter ‘n Go™ in the ON/RUN position. A child
could operate power windows, other controls,
or move the vehicle.
Be sure the parking brake is fully disengaged
before driving; failure to do so can lead to
brake failure and a collision.
Always fully apply the parking brake when
leaving your vehicle, or it may roll and cause
damage or injury. Also be certain to leave the
transmission in PARK. Failure to do so may
allow the vehicle to roll and cause damage or
injury.
CAUTION!
If the Brake System Warning Light remains on
with the parking brake released, a brake system
malfunction is indicated. Have the brake system
serviced by an authorized dealer immediately.
WARNING!
WARNING!
Driving the vehicle with the parking brake
engaged, or repeated use of the parking brake
to slow the vehicle may cause serious damage to
the brake system. Be sure the parking brake is
fully disengaged before driving; failure to do so
can lead to brake failure and a collision.
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126STARTING AND OPERATING
(Continued)
(Continued)
Maintenance Mode has requirements that must be
met in order to be activated:
The vehicle must be at a standstill.
The parking brake must be unapplied.
The transmission must be in PARK or NEUTRAL.
While in Maintenance Mode, the EPB Warning
Light will flash continuously while the ignition is
ON.
When brake maintenance work is complete, the
following steps must be followed to reset the
parking brake system to normal operation:
Ensure the vehicle is at a standstill.
Press the brake pedal with moderate force.
Apply the EPB Switch.
AUTOMATIC TRANSMISSION
You must press and hold the brake pedal while
shifting out of PARK.
WARNING!
You can be badly injured working on or around a
motor vehicle. Do only that service work for
which you have the knowledge and the right
equipment. If you have any doubt about your
ability to perform a service job, take your vehicle
to a competent mechanic.
WARNING!
Never use the PARK (P) position as a substi -
tute for the parking brake. Always apply the
parking brake fully when exiting the vehicle to
guard against vehicle movement and possible
injury or damage.
Your vehicle could move and injure you and
others if it is not in PARK. Check by trying to
move the transmission gear selector out of
PARK with the brake pedal released. Make
sure the transmission is in PARK before
exiting the vehicle.
The transmission may not engage PARK if the
vehicle is moving. Always bring the vehicle to a
complete stop before shifting to PARK, and
verify that the transmission gear position indi -
cator solidly indicates PARK without blinking.
Ensure that the vehicle is completely stopped,
and the PARK position is properly indicated,
before exiting the vehicle.
It is dangerous to shift out of PARK or
NEUTRAL (N) if the engine speed is higher
than idle speed. If your foot is not firmly
pressing the brake pedal, the vehicle could
accelerate quickly forward or in reverse. You
could lose control of the vehicle and hit
someone or something. Only shift into gear
when the engine is idling normally and your
foot is firmly pressing the brake pedal.
Unintended movement of a vehicle could
injure those in or near the vehicle. As with all
vehicles, you should never exit a vehicle while
the engine is running. Before exiting a vehicle,
always come to a complete stop, then apply
the parking brake, shift the transmission into
PARK, and turn the ignition OFF. When the
ignition is in the OFF position, the transmis -
sion is locked in PARK, securing the vehicle
against unwanted movement.
When exiting the vehicle, always make sure
the ignition is in the OFF position, remove the
key fob from the vehicle, and lock the vehicle.
WARNING!
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STARTING AND OPERATING129
NEUTRAL (N)
Use this range when the vehicle is standing for
prolonged periods with the engine running. Apply
the parking brake and shift the transmission into
PARK (P) if you must exit the vehicle.
DRIVE (D)
This range should be used for most city and
highway driving. It provides the smoothest upshifts
and downshifts, and the best fuel economy. The
transmission automatically upshifts through all
forward gears. When frequent transmission shifting occurs (such
as when operating the vehicle under heavy loading
conditions, in hilly terrain, traveling into strong
head winds, or while towing a heavy trailer), use
the AutoStick shift control to select a lower gear
Ú
page 130. Under these conditions, using a lower
gear will improve performance and extend
transmission life by reducing excessive shifting
and heat buildup.
During cold temperatures, transmission operation
may be modified depending on engine and
transmission temperature as well as vehicle
speed. This feature improves warm-up time of the
engine and transmission to achieve maximum
efficiency. Engagement of the torque converter
clutch is inhibited until the transmission fluid is
warm. Normal operation will resume once the
transmission temperature has risen to a suitable
level.
Transmission Limp Home Mode
Transmission function is monitored electronically
for abnormal conditions. If a condition is detected
that could result in transmission damage,
Transmission Limp Home Mode is activated. In this
mode, the transmission may operate only in
certain gears, or may not shift at all. Vehicle
performance may be severely degraded and the
engine may stall. In some situations, the
transmission may not re-engage if the engine is
turned off and restarted. The Malfunction Indicator Light (MIL) may be illuminated. A message in the
instrument cluster will inform the driver of the
more serious conditions, and indicate what actions
may be necessary.
In the event of a momentary problem, the
transmission can be reset to regain all forward
gears by performing the following steps:
NOTE:In cases where the instrument cluster message
indicates the transmission may not re-engage after
engine shutdown, perform this procedure only in a
desired location (preferably, at an authorized
dealer).
1. Stop the vehicle.
2. Shift the transmission into PARK (P), if
possible. If not, shift the transmission to
NEUTRAL (N).
3. Push and hold the ignition switch until the engine turns off.
4. Wait approximately 30 seconds.
5. Restart the engine.
6. Shift into the desired gear range. If the problem is no longer detected, the
transmission will return to normal operation.
WARNING!
Do not coast in NEUTRAL and never turn off the
ignition to coast down a hill. These are unsafe
practices that limit your response to changing
traffic or road conditions. You might lose control
of the vehicle and have a collision.
CAUTION!
Towing the vehicle, coasting, or driving for any
other reason with the transmission in NEUTRAL
can cause severe transmission damage.
For Recreational Towing see Ú page 195.
For Towing A Disabled Vehicle see Ú page 326.
4
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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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132STARTING AND OPERATING
Proper operation of four-wheel drive vehicles
depends on tires of equal size, type, and
circumference on each wheel. Any difference will
adversely affect performance and function of 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.
SHIFT POSITIONS
For additional information on the appropriate use
of each four-wheel drive system mode position,
see the following:
4WD HI
This is the default operating range for daily use.
N (NEUTRAL)
This range disengages the driveline from the
powertrain. It is used for towing your vehicle
behind another vehicle Ú page 195.
4WD LOW
This range is for low speed four-wheel drive. It
provides an additional gear reduction which allows
for increased torque to be delivered to both the
front and rear wheels while providing maximum
pulling power for loose, slippery road surfaces only.
Do not exceed 25 mph (40 km/h).
SHIFTING PROCEDURES
4WD HI To 4WD LOW
With the vehicle at speeds of 0 to 3 mph (0 to
5 km/h), the ignition switch in the ON/RUN
position and 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 on solid.
4WD LOW Button
NOTE: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 Ú page 98.
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 parking brake. The transfer
case N (NEUTRAL) position disengages 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.
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 parking brake. The transfer
case N (NEUTRAL) position disengages 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.
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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
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