2021 JEEP WRANGLER UNLIMITED ESP

151
tion. Do not pause with the transfer case in
N (Neutral). Once the shift is completed,
place the transmission into DRIVE.
NOTE:
Shifting into or out of 4L is possible with the
vehicle completely stopped; however, diffi-
culty may occur due to the mating 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 at 2 to
3 mph (3 to 5 km/h). Avoid attempting to
engage or disengage 4L with the vehicle
moving faster than 2 to 3 mph (3 to 5 km/h).Trac-Lok Rear Axle — If Equipped
The Trac-Lok rear axle provides a constant
driving force to both rear wheels and reduces
wheel spin caused by the loss of traction at
one driving wheel. If traction differs between
the two rear wheels, the differential automat -
ically proportions the usable torque by
providing more torque to the wheel that has
traction.
Trac-Lok is especially helpful during slippery
driving conditions. With both rear wheels on
a slippery surface, a slight application of the
accelerator will supply maximum traction.
Axle Lock (Tru-Lok) — Rubicon Models

The AXLE LOCK switch is located on the instru -
ment panel (to the right of the steering column).

Axle Lock Switch Panel
This feature will only activate when the
following conditions are met:
Ignition in RUN position, vehicle in 4L
(Low) range.

Vehicle speed should be 10 mph (16 km/h)
or less.

Both right and left wheels on axle are at
the same speed.
To activate the system, push the AXLE LOCK
switch down to lock the rear axle only (the
“REAR ONLY” will illuminate), push the
switch up to lock the front axle and rear axle
WARNING!
Failure to engage a transfer case position
completely can cause transfer case
damage or loss of power and vehicle
control. You could have a collision. Do not
drive the vehicle unless the transfer case
is fully engaged.
WARNING!
On vehicles equipped with a limited-slip
differential, never run the engine with one
rear wheel off the ground. The vehicle may
drive through the rear wheel remaining on
the ground and cause you to lose control of
your vehicle.
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162
The ParkSense switch LED will be on when
ParkSense is disabled or requires service.
The ParkSense switch LED will be off when
the system is enabled. If the ParkSense
switch is pushed, and requires service, the
ParkSense switch LED will blink momen-
tarily, and then the LED will be on.
ParkSense System Usage Precautions
NOTE:
Ensure that the rear bumper is free of
snow, ice, mud, dirt and debris to keep the
ParkSense system operating properly.
Jackhammers, large trucks, and other
vibrations could affect the performance of
ParkSense.
When you turn ParkSense off, the instru -
ment cluster display will read “PARK -
SENSE OFF.” Furthermore, once you turn
ParkSense off, it remains off until you turn
it on again, even if you cycle the ignition.
ParkSense, when on, will reduce the
volume of the radio when it is sounding a
tone.
Clean the ParkSense sensors regularly,
taking care not to scratch or damage them.
The sensors must not be covered with ice,
snow, slush, mud, dirt or debris. Failure to
do so can result in the system not working
properly. The ParkSense system might not
detect an obstacle behind the fascia/
bumper, or it could provide a false indica-
tion that an obstacle is behind the fascia/
bumper.
Use the ParkSense switch to turn the
ParkSense system off if objects such as
bicycle carriers, trailer hitches, etc. are
placed within 12 inches (30 cm) from the
rear fascia/bumper. Failure to do so can
result in the system misinterpreting a
close object as a sensor problem, causing
the “PARKSENSE UNAVAILABLE
SERVICE REQUIRED” message to be
displayed in the instrument cluster
display.
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 contin -
uous 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.
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167
(Continued)
(Continued)
placed within 30 cm from the rear fascia/
bumper. Failure to do so can result in the
system misinterpreting a close obstacle as
a sensor problem, causing the “PARK
-
SENSE UNAVAILABLE SERVICE
REQUIRED” message to appear in the
instrument cluster display.
ParkSense should be disabled when the
swing gate is in the open position. An open
swing gate could provide a false indication
that an obstacle is behind the vehicle.
PARKVIEW REAR BACK UP
CAMERA — IF EQUIPPED
The ParkView Rear Back Up Camera allows
you to see an on-screen image of the rear
surroundings of your vehicle whenever the
gear selector is put into REVERSE. The
image will be displayed in the touchscreen
display along with a caution note to “check
entire surroundings” across the top of the
screen. After five seconds this note will
disappear. The ParkView camera is located
on the rear of the vehicle in the center of the
spare tire. 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 contin -
uous 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,
including 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.
WARNING! (Continued)
The vehicle must be driven slowly when
using ParkSense in order to be able to
stop in time when an obstacle is
detected. It is recommended that the
driver looks over his/her shoulder when
using ParkSense.
CAUTION! (Continued)
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168
Manual Activation Of The Rear View Camera
1. Press the “Controls” button located onthe bottom of the Uconnect display.
2. Press the “Backup Camera” button to turn the Rear View Camera system on.
When the vehicle is shifted out of REVERSE
(with Camera delay turned off), the rear
Camera mode is exited and the previous
screen appears again.
When the vehicle is shifted out of REVERSE
(with Camera delay turned on), the rear
Camera image will be displayed for up to 10
seconds unless the vehicle speed exceeds
8 mph (13 km/h), the transmission is shifted
into PARK, the ignition is placed in the OFF
position, or the touchscreen button “X” to
disable display of the Rear View Camera
image is pressed.
Whenever the Rear View Camera image is
activated through the “Backup Camera”
button in the “Controls” menu, and the
vehicle speed is greater than, or equal to,
8 mph (13 km/h), a display timer for the
image is initiated. The image will continue to
be displayed until the display timer exceeds
10 seconds. NOTE:
If the vehicle speed remains below 8 mph
(13 km/h), the Rear View Camera image
will be displayed continuously until deac-
tivated via the touchscreen button “X”,
the transmission is shifted into PARK, or
the ignition is placed in the OFF position.
The touchscreen button “X” to disable
display of the camera image is made avail
-
able ONLY when the vehicle is not in
REVERSE.
When enabled, active guide lines are overlaid
on the image to illustrate the width of the
vehicle and its projected backup path based
on the steering wheel position. A dashed
center line overlay indicates the center of the
vehicle to assist with parking or aligning to a
hitch/receiver.
When enabled, fixed guide lines are overlaid
on the image to illustrate the width of the
vehicle.
Different colored zones indicate the distance
to the rear of the vehicle. NOTE:
If snow, ice, mud, or any foreign substance
builds up on the camera lens, clean the lens,
rinse with water, and dry with a soft cloth. Do
not cover the lens.
WARNING!
Drivers must be careful when backing up
even when using the ParkView Rear Back
Up Camera. Always check carefully behind
your vehicle, and be sure to check for
pedestrians, animals, other vehicles,
obstructions, or blind spots before backing
up. You are responsible for the safety of
your surroundings and must continue to
pay attention while backing up. Failure to
do so can result in serious injury or death.
CAUTION!
To avoid vehicle damage, ParkView
should only be used as a parking aid. The
ParkView camera is unable to view every
obstacle or object in your drive path.
To avoid vehicle damage, the vehicle
must be driven slowly when using
ParkView to be able to stop in time when
an obstacle is seen. It is recommended
that the driver look frequently over his/
her shoulder when using ParkView.
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174
VEHICLE LOADING
Weights Label
As required by local regulations, your vehicle
has a weights label affixed to the driver's side
door or pillar.Weights Label (Example)
This label contains:
1. The manufacturer’s company name
2. The whole vehicle type-approval number
3. The Vehicle Identification Number (VIN) 4. Gross Vehicle Weight Rating (GVWR)
5. Gross Combined Weight Rating (GCWR)
6. Front Gross Axle Weight Rating (FGAWR)
7. Rear Gross Axle Weight Rating (RGAWR)
NOTE:
For specific markets the label could be
different, respect the one shown in the image
contains: the GVWR, GAWR front and rear.
Gross Vehicle Weight Rating (GVWR)
The Gross Vehicle Weight Rating (GVWR) is
the total permissible weight of your vehicle
including driver, passengers, vehicle,
options and cargo. The label also 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 passen
-
gers, options and cargo.
Gross Axle Weight Rating (GAWR)
The Gross Axle Weight Rating (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 compo -
nents sometimes specified by purchasers for
increased durability does not necessarily
increase the vehicle's GVWR.
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209
(Continued)
NOTE:
Ensure that the tow eye is properly
mounted.
Do not use the tow eye to pull the vehicle
onto a flatbed truck.Tow Eye Warning Label
ENHANCED ACCIDENT
RESPONSE SYSTEM (EARS)
This vehicle is equipped with an Enhanced
Accident Response System.
Please refer to “Occupant Restraint
Systems” in “Safety” for further information
on the Enhanced Accident Response System
(EARS) function.
EVENT DATA RECORDER
(EDR)
This vehicle is equipped with an Event Data
Recorder (EDR). The main purpose of an
EDR is to record data that will assist in
understanding how a vehicle’s systems
performed under certain crash or near
crash-like situations, such as an air bag
deployment or hitting a road obstacle.
Please refer to “Occupant Restraint
Systems” in “Safety” for further information
on the Event Data Recorder (EDR).
The brake and steering power assist
systems will not function while the
vehicle is being towed. You will, there-
fore, need to apply more force on the
brake pedal and steering wheel. Do not
use flexible ropes when towing, and
avoid jerky movements. Do not start the
engine while towing the car. Before
tightening the ring, clean the threaded
housing thoroughly. Make sure that the
ring is fully screwed into the housing
before towing the car.
CAUTION!
The tow eye must only be used for road -
side emergencies. Use with an appro-
priate device in accordance with highway
code (a rigid bar) to maneuver the
vehicle in preparation for transport via a
tow truck.
The tow eye must not be used to move
the vehicle off the road or where there
are obstacles.
Do not use the tow eyes for tow truck
hookup or highway towing.
WARNING! (Continued)
Do not use the tow eye to free a stuck
vehicle. Refer to the “Freeing A Stuck
Vehicle” section for further information.
Please refer to the “Towing A Disabled
Vehicle” section for detailed
instructions. Damage to your vehicle
may occur if these guidelines are not
followed.
CAUTION! (Continued)
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210
SERVICING AND MAINTENANCE
SCHEDULED SERVICING
Correct servicing is crucial for guaranteeing a
long life for the car under the best condi-
tions. For this reason, Jeep has planned a
series of checks and services at fixed
distance intervals and, where provided, at
fixed time intervals, as described in the
Scheduled Servicing plan. To keep the car’s
efficiency in tip-top condition, in the
following Scheduled Service plan pages a
few additional checks are listed that should
be carried out more frequently with respect
to the normal coupon redemption schedule.
Scheduled Servicing is offered by all autho -
rized dealerships according to fixed time or
mileage intervals. If, during each operation,
in addition to the ones scheduled, the need
arises for further replacements or repairs,
these may be carried out with the owner's
explicit agreement only.
The technicians at your dealership know your
vehicle best, and have access to factory
trained information, genuine Mopar parts,
and specially designed electronic and
mechanical tools that can help prevent
future costly repairs. If your car is used
frequently for towing, the interval between
one scheduled servicing operation and the next should be reduced. More frequent main
-
tenance may be needed for vehicles in severe
operating conditions, such as dusty areas
and very short trip driving.
NOTE:
Scheduled Servicing interventions are set
out by the Manufacturer. Failure to have
them carried out may invalidate the
warranty. It is advised to inform an autho -
rized dealership of any small operating irreg -
ularities without waiting for the next service.
Scheduled Servicing — Gasoline Engine
The oil change indicator system (if
equipped) will remind you that it is time to
take your vehicle in for engine oil replace -
ment.
On vehicles equipped with instrument
cluster display, “Oil Change Required” will
be displayed and a single chime will sound,
indicating that an oil change is necessary.
On non-instrument cluster display equipped
vehicles, “Change Oil” will flash in the
instrument cluster odometer and a single
chime will sound, indicating that an oil
change is necessary. The oil change indicator message will illumi
-
nate approximately 7,000 miles
(11,200 km) after the most recent oil
change was performed. Have your vehicle
serviced as soon as possible, within
500 miles (800 km). However, an earlier oil
change at 4,500 miles (7,500 km) may be
required if the vehicle is operated under
“Severe Duty Conditions” later in this
section.
NOTE:
The oil change indicator message will not
monitor the time since the last oil change.
Change your vehicle's oil if it has been
12 months since your last oil change even
if the oil change indicator message is NOT
illuminated.
Change your engine oil more often if you
drive your vehicle off-road for an extended
period of time.
Under no circumstances should oil change
intervals exceed 7,500 miles
(12,000 km) or 12 months, whichever
comes first.
An authorized dealer will reset the oil change
indicator message after completing the
scheduled oil change.
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SERVICING AND MAINTENANCE
232
(Continued)
Fluid Level Check
The fluid level is preset at the factory and
does not require adjustment under normal
operating conditions. Routine fluid level
checks are not required; therefore the trans-
mission has no dipstick. An authorized
dealer can check your transmission fluid
level using special service tools. If you notice
fluid leakage or transmission malfunction,
visit an authorized dealer immediately to
have the transmission fluid level checked.
Operating the vehicle with an improper fluid
level can cause severe transmission damage.
RAISING THE VEHICLE
In the case where it is necessary to raise the
vehicle, go to an authorized dealer or service
station.
TIRES
Tires — General Information
Tire Pressure
Proper tire inflation pressure is essential to
the safe and satisfactory operation of your
vehicle. Four primary areas are affected by
improper tire pressure:
Safety
Fuel Economy
Tread Wear
Ride Comfort and Vehicle Stability
Safety Both underinflation and overinflation affect
the stability of the vehicle and can produce
a feeling of sluggish response or over respon
-
siveness in the steering.
NOTE:
Unequal tire pressures from side to side
may cause erratic and unpredictable
steering response.
Unequal tire pressure from side to side
may cause the vehicle to drift left or right.
Fuel Economy

Underinflated tires will increase tire rolling
resistance resulting in higher fuel consumption.

CAUTION!
If a transmission fluid leak occurs, visit an
authorized dealer immediately. Severe
transmission damage may occur. An
authorized dealer has the proper tools to
adjust the fluid level accurately.
WARNING!
Improperly inflated tires are dangerous
and can cause collisions.
Underinflation increases tire flexing and
can result in overheating and tire failure.
Overinflation reduces a tire's ability to
cushion shock. Objects on the road and
chuckholes can cause damage that
result in tire failure.

Overinflated or underinflated tires can affect
vehicle handling and can fail suddenly,
resulting in loss of vehicle control.

Unequal tire pressures can cause
steering problems. You could lose
control of your vehicle.
Unequal tire pressures from one side of
the vehicle to the other can cause the
vehicle to drift to the right or left.

Always drive with each tire inflated to the
recommended cold tire inflation pressure.

WARNING! (Continued)
2020_JEEP_JL_WRANGLER_UG_RHD_UK.book Page 232