engine JEEP WRANGLER UNLIMITED 2021 Owner handbook (in English)

6
STARTING AND OPERATING
STARTING THE ENGINE ........................ 138
Normal Starting —
Gasoline Engine ........................... 138
Normal Starting — Diesel Engine ......... 141
Diesel Engine Warm-Up ................ 141
Diesel Engine Idling —
In Cold Weather ........................... 142 Stopping the Engine ..................... 142

ENGINE BREAK-IN RECOMMENDATIONS .... 143

AUTOMATIC TRANSMISSION................. 143
Ignition Park Interlock................... 144
Brake/Transmission Shift Interlock
System ....................................... 144 Eight–Speed Automatic
Transmission................................ 145
FOUR–WHEEL DRIVE OPERATION .......... 146
Four-Position Transfer Case ........... 146
Five-Position Transfer Case ........... 148
Trac-Lok Rear Axle —
If Equipped ................................. 151 Axle Lock (Tru-Lok) —
Rubicon Models ........................... 151 Electronic Sway Bar Disconnect —
If Equipped ................................. 152
STOP/START SYSTEM — AUTOMATIC
TRANSMISSION (IF EQUIPPED) .............153
Automatic Mode ........................... 154
Possible Reasons The Engine Does
Not Autostop ............................... 154 To Start The Engine While In
Autostop Mode ............................. 155 To Manually Turn Off The
Stop/Start System ........................ 155 To Manually Turn On The
Stop/Start System ........................ 155 System Malfunction...................... 155
ACTIVE SPEED LIMITER —
IF EQUIPPED .......................................156
Activation .................................... 156
Exceeding The Set Speed.............. 156
Deactivation ................................ 156
SPEED CONTROL ..................................157
To Activate .................................. 157
To Set A Desired Speed ................ 158
To Resume Speed ....................... 158
To Deactivate .............................. 158
ADAPTIVE CRUISE CONTROL (ACC) —
IF EQUIPPED .......................................158
To Activate/Deactivate .................. 158
To Set A Desired ACC Speed ......... 159
To Resume .................................. 159
To Vary The Speed Setting ........... 159
Setting The Following Distance
In ACC ........................................ 160
PARKSENSE REAR PARK ASSIST —
IF EQUIPPED ........................................161
ParkSense Sensors ........................161
Enabling And Disabling
ParkSense ....................................161 ParkSense System Usage
Precautions ..................................162
PARKSENSE FRONT AND
REAR PARK ASSIST — IF EQUIPPED ......163
ParkSense Sensors ........................163
ParkSense Warning Display ............163
ParkSense Display ........................163
Enabling And Disabling
ParkSense ....................................165 Service The ParkSense Park Assist
System ........................................166 Cleaning The ParkSense System .....166
ParkSense System Usage
Precautions ..................................166
PARKVIEW REAR BACK UP CAMERA —
IF EQUIPPED ........................................167
REFUELING THE VEHICLE .....................169
Fuel Filler Cap ..............................169
Loose Fuel Filler Cap Message ......170
REFUELING THE VEHICLE — DIESEL ......170
AdBlue® (UREA) — If Equipped ....171
VEHICLE LOADING ...............................174
Weights Label...............................174
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7
TRAILER TOWING ................................ 175

Trailer Towing Weights
(Maximum Trailer Weight Ratings)..... 175

RECREATIONAL TOWING (BEHIND
MOTORHOME, ETC.) ............................. 176
Towing This Vehicle Behind
Another Vehicle ............................ 176 Recreational Towing — Four-Wheel
Drive Models ................................ 176
IN CASE OF EMERGENCY
HAZARD WARNING FLASHERS............... 179
BULB REPLACEMENT............................ 179
Replacement Bulbs ...................... 179
Bulb Replacement ........................ 181
FUSES ............................................... 183
General Information ...................... 183
Power Distribution Center (PDC) .... 184
JACKING AND TIRE CHANGING .............. 192
Jack Location .............................. 193
Spare Tire Removal ...................... 193
Preparations For Jacking .............. 194
Jacking Instructions ...................... 195
Road Tire Installation.................... 197
Declaration Of Conformance .......... 198
Jack Usage Precautions................. 200
JUMP STARTING .................................. 201
Preparations For Jump Start .......... 201
Jump Starting Procedure ............... 202
IF YOUR ENGINE OVERHEATS ...............204
MANUAL PARK RELEASE .....................204
FREEING A STUCK VEHICLE ..................206
TOWING A DISABLED VEHICLE ..............207
Four–Wheel Drive Models .............. 208
Without The Key Fob .................... 208
Tow Eye Usage............................. 208
ENHANCED ACCIDENT RESPONSE
SYSTEM (EARS) ..................................209
EVENT DATA RECORDER (EDR) ..............209
SERVICING AND MAINTENANCE
SCHEDULED SERVICING .......................210
Scheduled Servicing —
Gasoline Engine ........................... 210 Scheduled Servicing —
Diesel Engine............................... 216
ENGINE COMPARTMENT .......................221
2.0L Gasoline Engine .................. 221
3.6L Gasoline Engine .................. 222
2.2L Diesel Engine ....................... 223
Checking Oil Level —
Gasoline Engine .......................... 224 Adding Washer Fluid .................... 224
Maintenance-Free Battery ............ 225
Pressure Washing ......................... 225
DEALER SERVICE .................................226
Windshield Wiper Blades ...............226
Exhaust System ...........................228
Cooling System .............................229
Brake System ..............................230
Automatic Transmission ................231
RAISING THE VEHICLE ..........................232 TIRES .................................................232
Tires — General Information .........232
Tire Types ....................................237
Spare Tires — If Equipped ............237
Wheel And Wheel Trim Care ..........239

Tire Chains And Traction Devices ..... 240

Tire Rotation Recommendations ....241
STORING THE VEHICLE .........................241
BODYWORK .........................................242
Body And Underbody
Maintenance ................................242 Preserving The Bodywork ...............243
INTERIORS ..........................................245
Seats And Fabric Parts ..................245
Plastic And Coated Parts ...............246
Leather Parts ................................246
Glass Surfaces .............................246
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TECHNICAL SPECIFICATIONS
VEHICLE IDENTIFICATION NUMBER ...... 247
WHEEL AND TIRE TORQUE
SPECIFICATIONS .................................. 247
Torque Specifications ................... 247
WHEELS .............................................. 248
WEIGHTS ............................................ 248FUEL REQUIREMENTS —
GASOLINE ENGINE ............................... 248
2.0L Engine ................................. 248
3.6L Engine ................................. 249
Materials Added To Fuel................ 249
Fuel Icon Identification Compliant
To EN16942................................ 249
FUEL REQUIREMENTS —
DIESEL ENGINE .................................... 251
Fuel Icon Identification Compliant
To EN16942................................ 251
FLUID CAPACITIES ............................... 253 FLUIDS AND LUBRICANTS ..................... 254
Engine......................................... 254
Chassis ....................................... 257
FUEL CONSUMPTION AND
CO
2 EMISSIONS ..................................258
MOPAR ACCESSORIES .........................258
Authentic Accessories And Jeep
Performance Parts By Mopar ......... 258
MULTIMEDIA
UCONNECT SYSTEMS ..........................260
CYBERSECURITY .................................260
UCONNECT 3 WITH 5-INCH DISPLAY —
IF EQUIPPED ........................................261
Uconnect 3 With 5-inch Display
At A Glance ................................. 261 Clock Setting .............................. 261
Audio Setting............................... 261
Radio Operation .......................... 262
UCONNECT 4 WITH 7-INCH
DISPLAY .............................................263
Uconnect 4 At A Glance .............. 263
Drag & Drop Menu Bar ................. 264
Radio ......................................... 265
Android Auto™ ............................ 266
Apple CarPlay® Integration ........... 267
Apps — If Equipped ..................... 268
UCONNECT 4/4 NAV WITH 8.4-INCH
DISPLAY ..............................................268
Uconnect 4/4 NAV At A Glance .....268
Drag & Drop Menu Bar ..................269
Radio ..........................................270
Android Auto™ — If Equipped ......271
Apple CarPlay® Integration —
If Equipped ..................................274 Apps — If Equipped......................277
UCONNECT SETTINGS ..........................277OFF-ROAD PAGES — IF EQUIPPED .........277
Off-Road Pages Status Bar ............278
Drivetrain ....................................278
Pitch & Roll ................................279
Accessory Gauge ..........................279
STEERING WHEEL AUDIO CONTROLS .....279
Radio Operation ............................280
Media Mode .................................280
AUX/USB/MP3 CONTROL.......................280
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13
(Continued)
START/STOP Ignition Button
The push button ignition can be placed in
the following modes:
OFF
The engine is stopped.
Some electrical devices (e.g. Central
locking, alarm, etc.) are available.
ACC
Engine is not started.
Some electrical devices are available. RUN

Driving position.
All electrical devices are available.
START
The engine will start.
NOTE:
Refer to "Starting The Engine" in "Starting
And Operating" in the Owner’s Manual for
further information.
WARNING!
When exiting the vehicle, always remove
the key fob from the vehicle and lock
your vehicle.
Never leave children alone in a vehicle,
or with access to an unlocked vehicle.
Allowing children to be in a vehicle unat-
tended is dangerous for a number of
reasons. A child or others could be seri -
ously 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 the ignition of
a vehicle equipped with Keyless
Enter-N-Go in the ON/RUN mode. A
child could operate power windows,
other controls, or move the vehicle.
Do not leave children or animals inside
parked vehicles in hot weather. Interior
heat build-up may cause serious injury or
death.
CAUTION!
An unlocked vehicle is an invitation for
thieves. Always remove key fob from the
vehicle and lock all doors when leaving the
vehicle unattended.
WARNING! (Continued)
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GETTING TO KNOW YOUR VEHICLE
14
REMOTE STARTING
SYSTEM — IF EQUIPPED
This system uses the key fob to
start the engine conveniently from
outside the vehicle while still main-
taining security. The system has a
range of 328 ft (100 m).
The Remote Starting System also activates
the Climate Control, vented seats (if
equipped) in temperatures above 80°F
(26.7°C), the heated seats (if equipped), and
heated steering wheel (if equipped) in
temperatures below 40°F (4.4°C). Refer to
“Heated Seats” in “Getting To Know Your
Vehicle” in the Owner’s Manual for further
information.
NOTE:
The vehicle must be equipped with an
automatic transmission to be equipped
with Remote Start.
Obstructions between the vehicle and key
fob may reduce this range.
How To Use Remote Start
Push the Remote Start button on the key
fob twice within five seconds. Pushing the
Remote Start button a third time shuts the
engine off.
To drive the vehicle, push the unlock
button, and place the ignition in the ON/
RUN position.
With remote start, the engine will only run
for 15 minutes (timeout) unless the igni -
tion key is placed in the ON/RUN position.
The vehicle must be started with the key
after two consecutive timeouts.
All of the following conditions must be met
before the engine will remote start:
Gear Selector in PARK
Doors closed
Hood closed
Swing Gate closed
Hazard switch off
Brake switch inactive (brake pedal not
pushed)
Battery at an acceptable charge level
System not disabled from previous remote
start event
Vehicle alarm system indicator flashing
Ignition in STOP/OFF position
Fuel level meets minimum requirement
All removable doors must not be removed
Malfunction indicator light not illuminated
WARNING!
Do not start or run an engine in a closed
garage or confined area. Exhaust gas
contains Carbon Monoxide (CO) which is
odorless and colorless. Carbon Monoxide
is poisonous and can cause serious
injury or death when inhaled.
Keep key fobs away from children. Oper -
ation of the Remote Start System,
windows, door locks or other controls
could cause serious injury or death.
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15
To Enter Remote Start Mode
Push and release the Remote Start button on
the key fob twice within five seconds. The
vehicle doors will lock, the turn signals will
flash twice, and the horn will chirp twice.
Then the engine will start, and the vehicle
will remain in the Remote Start mode for a
15 minute cycle.
NOTE:
If an engine fault is present or fuel level is
low, the vehicle will start and then shut
down in 10 seconds.
The park lamps will turn on and remain on
during Remote Start mode.
For security, power window operation is
disabled when the vehicle is in the
Remote Start mode.
The engine can be started two consecutive
times (two 15 minute cycles) with the key
fob. However, the ignition must be placed
in the ON/RUN position before you can
repeat the start sequence for a third cycle.

VEHICLE SECURITY ALARM —
IF EQUIPPED

The vehicle security alarm monitors the
vehicle doors for unauthorized entry and the
ignition switch for unauthorized operation.
When the alarm is activated, the interior
switches for door locks are disabled. The
vehicle security alarm provides both audible
and visible signals. If something triggers the
alarm, the vehicle security alarm will provide
the following audible and visible signals: the
horn will pulse, the park lamps and/or turn
signals will flash, and the vehicle security
light in the instrument cluster will flash.
To Arm The System
Follow these steps to arm the vehicle secu-
rity alarm:
1. Make sure the vehicle’s ignition is placed in the OFF position. Refer to "Starting
The Engine" in "Starting And Operating"
for further information. 2. Perform one of the following methods to
lock the vehicle:
Push lock on the interior power doorlock switch with the driver and/or
passenger door open.
Push the lock button on the exterior Passive Entry Door Handle with a valid
key fob available in the same exterior
zone. Refer to "Keyless Enter-N-Go —
Passive Entry" in “Doors” in this
chapter for further information.
Push the lock button on the key fob.
3. If any doors are open, close them.
To Disarm The System
The vehicle security alarm can be disarmed
using any of the following methods:
Push the unlock button on the key fob.
Grasp the Passive Entry Unlock Door
Handle (if equipped). Refer to "Keyless
Enter-N-Go — Passive Entry" in “Doors” in
this chapter for further information.
Cycle the vehicle ignition system out of
the OFF position.
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25
Heated Seats — If Equipped
The heated seats control buttons are located
on the center instrument panel below the
touchscreen, and are also located within the
climate or controls screen of the touch-
screen. Heated Seat Buttons
Push the heated seat button once to
turn the HI setting on.
Push the heated seat button a second
time to turn the MED setting on.
Push the heated seat button a third
time to turn the LO setting on.
Push the heated seat button a fourth
time to turn the heating elements off.
NOTE:
The engine must be running for the heated
seats to operate.
The level of heat selected will stay on until
the operator changes it. Vehicles Equipped With Remote Start
On models that are equipped with remote
start, the driver’s heated seat can be
programmed to come on during a remote
start.
This feature can be programmed through the
Uconnect system. Refer to “Uconnect
Settings” in “Multimedia” in the Owner’s
Manual for further information.
WARNING!
Adjusting a seat while driving may be
dangerous. Moving a seat while driving
could result in loss of control which
could cause a collision and serious injury
or death.
Seats should be adjusted before
fastening the seat belts and while the
vehicle is parked. Serious injury or death
could result from a poorly adjusted seat
belt.
Do not ride with the seatback reclined so
that the shoulder belt is no longer resting
against your chest. In a collision you
could slide under the seat belt, which
could result in serious injury or death.
WARNING!
Persons who are unable to feel pain to
the skin because of advanced age,
chronic illness, diabetes, spinal cord
injury, medication, alcohol use, exhaus-
tion or other physical condition must
exercise care when using the seat heater.
It may cause burns even at low tempera-
tures, especially if used for long periods
of time.
Do not place anything on the seat or
seatback that insulates against heat,
such as a blanket or cushion. This may
cause the seat heater to overheat. Sitting
in a seat that has been overheated could
cause serious burns due to the increased
surface temperature of the seat.
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STEERING WHEEL
Tilt/Telescoping Steering Column
This feature allows you to tilt the steering
column upward or downward. It also allows
you to lengthen or shorten the steering
column. The tilt/telescoping lever is located
on the steering column, below the turn signal
lever.Tilt/Telescoping Steering Column Lever
To unlock the steering column, push the
control handle downward (toward the floor).
To tilt the steering column, move the
steering wheel upward or downward as
desired. To lengthen or shorten the steering
column, pull the steering wheel outward or push it inward as desired. To lock the
steering column in position, push the control
handle upward until fully engaged.
Heated Steering Wheel — If Equipped
The steering wheel contains a heating
element that helps warm your hands in cold
weather. The heated steering wheel has only
one temperature setting. Once the heated
steering wheel has been turned on, it will
stay on until the operator turns it off. The
heated steering wheel may not turn on when
it is already warm.
The heated steering wheel control button is
located on the center of the instrument panel
below the touchscreen and within the
climate or controls screen of the touch
-
screen.
Push the heated steering wheel button
once to turn the heating element on.
Push the heated steering wheel button
a second time to turn the heating element
off.
NOTE:
The engine must be running for the heated
steering wheel to operate.
Vehicles Equipped With Remote Start
On models that are equipped with remote
start, the heated steering wheel can be
programmed to come on during a remote
start.
This feature can be programmed through the
Uconnect system. Refer to “Uconnect
Settings” in “Multimedia” in the Owner’s
Manual for further information.
WARNING!
Do not adjust the steering column while
driving. Adjusting the steering column
while driving or driving with the steering
column unlocked, could cause the driver
to lose control of the vehicle. Failure to
follow this warning may result in serious
injury or death.
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33
Automatic High Beam — If Equipped
The Automatic High Beam Headlamp Control
system provides increased forward lighting at
night by automating high beam control
through the use of a digital camera mounted
on the vehicle’s header. This camera detects
vehicle specific light and automatically
switches from high beams to low beams until
the approaching vehicle is out of view.
NOTE:

The Automatic High Beam Headlamp
Control can be turned on or off by selecting
“ON” under “Auto High Beam” within your
Uconnect settings, as well as turning the
headlight switch to the AUTO position and
placing the multifunction lever in the high
beam position. Refer to “Uconnect Settings”
in “Multimedia” in the Owner’s Manual for
further information.

Broken, muddy, or obstructed headlights
and taillights of vehicles in the field of
view will cause headlights to remain on
longer (closer to the vehicle). Also, dirt,
film, and other obstructions on the wind-
shield or camera lens will cause the
system to function improperly.
Flash-To-Pass
You can signal another vehicle with your
headlights by lightly pulling the multifunc -
tion lever toward you. This will cause the
high beam headlights to turn on, and remain
on, until the lever is released.
Automatic Headlights — If Equipped
This system automatically turns the head -
lights on or off according to ambient light
levels. To turn the system on, rotate the
headlight switch clockwise to the last detent
for automatic headlight operation. When the
system is on, the headlight time delay
feature is also on. This means the headlights
will stay on for up to 90 seconds after you
place the ignition into the OFF position. To
turn the automatic system off, move the
headlight switch out of the AUTO position.
NOTE:
The engine must be running before the head -
lights will come on in the automatic mode.
Front And Rear Fog Lights — If Equipped
The fog light switches are built into the head -
light switch. Fog Light Switch Location
To activate the front fog lights, push the
upper half of the headlight switch. To turn
off the front fog lights, push the upper half
of the headlight switch a second time.
To activate the rear fog lights, push the lower
half of the headlight switch. To turn off the
rear fog lights, push the lower half of the
headlight switch a second time.
NOTE:
To turn on the rear fog lamps, the low beam
lamps or front fog lamps must first be active.

An indicator light in the instrument cluster
illuminates when the fog lights are turned on.
1 — Front Fog Light Switch
2 — Rear Fog Light Switch
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35
WINDSHIELD WIPERS AND
WASHERS

The windshield wiper/washer control lever is
located on the right side of the steering column.
The front wipers are operated by rotating a
switch, located at the end of the lever.

Refer to “Rear Window Wiper/Washer” in
this section for further information on using
the rear window wiper/washer.Windshield Wiper/Washer Lever
Windshield Wiper Operation
Rotate the end of the lever upward to the
second detent past the intermittent settings
for low-speed wiper operation. Rotate the end of the lever upward to the third detent
past the intermittent settings for high-speed
wiper operation.
NOTE:
Do not operate the windshield wipers with
the blades lifted from the windshield.
Intermittent Wiper System
Use the intermittent wiper when weather
conditions make a single wiping cycle, with
a variable pause between cycles, desirable.
Rotate the end of the lever to the first detent
position for one of four intermittent settings.
The delay cycle can be set anywhere between
1 to 18 seconds.
NOTE:
The wiper delay times depend on vehicle
speed. If the vehicle is moving less than
10 mph (16 km/h), delay times will be
doubled.
Windshield Washers
To use the washer, pull the lever toward you
and hold while spray is desired. If the lever
is pulled while in the delay range, the wiper
will start and continue to operate for two or
three wipe cycles after the lever is released.
Then, the intermittent interval previously
selected will resume.
If the lever is pulled while in the off position,
the wipers will operate for two or three wipe
cycles. Then, the wipers will turn off.
CAUTION!
In cold weather, always turn off the wiper
switch and allow the wipers to return to
the park position before turning off the
engine. If the wiper switch is left on and
the wipers freeze to the windshield,
damage to the wiper motor may occur
when the vehicle is restarted.
WARNING!
Sudden loss of visibility through the
windshield could lead to a collision. You
might not see other vehicles or other
obstacles. To avoid sudden icing of the
windshield during freezing weather, warm
the windshield with the defroster before
and during windshield washer use.
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