
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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8
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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GETTING TO KNOW YOUR VEHICLE
34
Turn Signals
Move the multifunction lever up or down and
the  arrows  on  each  side  of  the  instrument
cluster flash to show proper operation of the
front and rear turn signal lights.
NOTE:
If either light remains on and does not flash,
or there is a very fast flash rate, check for a
defective  outside  light  bulb.  If  an  indicator
fails  to  light  when  the  lever  is  moved,  it
would  suggest  that  the  indicator  bulb  is
defective.
Lights-On Reminder
If  the  headlights,  parking  lights,  or  cargo
lights  are  left on after the  ignition is placed
in the OFF position, a chime will sound when
the driver’s door is opened.
Headlight Leveling System — If Equipped 
Your vehicle may be equipped with a headlight
leveling  system.  This  system  allows  the  driver
to  maintain  proper  headlight  beam  position
with the road surface regardless of vehicle load.
The control switch is located on the instrument
panel next to the dimmer control.
Headlight Leveling Control
To operate, rotate the control switch until the
appropriate  number,  which  corresponds  to
the  load  listed  on  the  chart,  aligns  with  the
indicator line on the switch.
0 /1 Driver only, or driver and front passenger.
2 All seating positions occupied, plus an evenly distributed load in the 
luggage compartment. The total weight of passengers and load does  not exceed the maximum load capacity of the vehicle.
3 Driver, plus an evenly distributed load in the luggage compartment. 
The total weight of the driver and load does not exceed the  maximum load capacity of the vehicle.
2020_JEEP_JL_WRANGLER_UG_RHD_UK.book  Page 34   

GETTING TO KNOW YOUR VEHICLE
58
reset.  If  the  power  rating  exceeds  approxi-
mately  170  Watts,  the  power  inverter  may
have to be reset manually.
Auxiliary Switches — If Equipped 
Four  auxiliary  switches  located  in  the  lower
switch  bank  of the  instrument  panel  can be
used to power various electrical devices. You
have the ability to configure the functionality
of  the  auxiliary  switches  via  the  Uconnect
settings.
All switches can be configured as follows:
Switch type operation:  Latching or Momentary
Power source: Battery or Ignition
Ability  to  hold  last  state  across  key  cycles:
On or Off Auxiliary Switches
NOTE:
Holding  last  state  conditions  are  met  when
switch  type  is  set  to  latching  and  power
source is set to ignition.
For  more  information,  refer  to  “Uconnect
Settings”  in  “Multimedia”  in  your  Owner’s
Manual.
For  the  connection  and  installation  of  your
electrical  devices  refer  to  your  authorized
dealership.
ROOF LUGGAGE RACK — IF 
EQUIPPED  
NOTE:
Roof  rack  applications  are  for  Hard  Top
models  ONLY.
The load carried on the roof, when equipped
with a luggage rack, must not exceed 100 lbs
(45 kg), this includes the weight of the cross -
bars, and  it  should  be  uniformly  distributed
over the cargo area.
Crossbars  should  always  be  used  whenever
cargo  is  placed  on  the  roof  rack.  Check  the
straps  frequently  to  be  sure  that  the  load
remains securely attached.
NOTE:
Crossbars can be purchased at an authorized
dealer through Mopar parts.
External racks do not increase the total load
carrying capacity of the vehicle. Be sure that
the  total  occupant  and  luggage  load  inside
the  vehicle,  plus  the  load  on  the  luggage
rack,  do  not  exceed  the  maximum  vehicle
load capacity. WARNING!
To avoid serious injury or death:
Do not insert any objects into the receptacles.
Do not touch with wet hands.
Close the lid when not in use.
If this outlet is mishandled, it may cause
an electric shock and failure.
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SAFETY
86
Towing With HSA
HSA will also  provide assistance to mitigate
roll back while towing a trailer.
Ready Alert Braking (RAB)
Ready  Alert  Braking  (RAB)  may  reduce  the
time  required  to  reach  full  braking  during
emergency  braking  situations.  It  anticipates
when  an  emergency  braking  situation  may
occur  by  monitoring  how  fast  the  throttle  is
released by the driver. The  Electronic Brake
Control (EBC) system  will prepare  the brake
system for a panic stop.
Rain Brake Support (RBS)
Rain  Brake  Support  (RBS)  may  improve
braking  performance  in  wet  conditions.  It
will  periodically  apply  a  small  amount  of
brake  pressure  to  remove  any water  buildup
on  the  front  brake  rotors.  It  functions  when
the windshield wipers are in LO or HI speed.
When  RBS  is active, there is no notification
to  the  driver  and  no  driver  interaction  is
required.
Trailer Sway Control (TSC)  
Trailer  Sway  Control  (TSC)  uses  sensors  in
the  vehicle  to  recognize  an  excessively
swaying trailer and will take the  appropriate
actions to attempt to stop the sway. TSC will
become active automatically once an exces-
sively swaying trailer is recognized.
NOTE:
TSC  cannot  stop  all  trailers  from  swaying.
Always  use  caution  when  towing  a  trailer  and
follow  the  trailer  tongue  weight  recommenda-
tions.  Refer  to  “Trailer  Towing”  in  “Starting
And Operating” for further information.
When  TSC  is  functioning,  the  “ESC  Activa -
tion/Malfunction  Indicator  Light”  will  flash,
the  engine  power  may  be  reduced  and  you
may  feel  the  brakes  being  applied  to  indi -
vidual  wheels  to  attempt  to  stop  the  trailer
from swaying. TSC is disabled when the ESC
system  is  in  the  “Partial  Off”  or  “Full  Off”
modes.
 WARNING!
If  you  use a  trailer  brake  controller with
your  trailer,  the  trailer  brakes  may  be
activated and deactivated with the brake
switch.  If  so,  there  may  not  be  enough
brake  pressure  to  hold  both  the  vehicle
and  the  trailer  on  a  hill  when  the  brake
pedal  is  released.  In  order  to  avoid
rolling  down  an  incline  while  resuming
acceleration,  manually  activate  the
trailer brake or apply more vehicle brake
pressure  prior  to  releasing  the  brake
pedal.
HSA is not a parking brake. Always apply
the parking brake fully when exiting your
vehicle.  Also,  be  certain  to  place  the
transmission in PARK (P).
Failure  to  follow  these  warnings  can
result  in  a  collision  or  serious  personal
injury. WARNING!
If  TSC  activates  while  driving,  slow  the
vehicle  down,  stop  at  the  nearest  safe
location,  and  adjust  the  trailer  load  to
eliminate trailer sway.
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SAFETY
118
(Continued)
There  are  different  sizes  and  types  of
restraints  for  children  from  newborn  size  to
the  child  almost  large  enough  for  an  adult
safety  belt.  Children  should  ride  rearward
facing  as  long  as  possible;  this  is  the  most
protected position for a child in the event of
a crash. Always check the child seat Owner’s
Manual  to  make  sure  you  have  the  correct
seat for your child. Carefully read and follow
all the instructions and warnings in the child
restraint  Owner’s  Manual  and  on  all  the
labels attached to the child restraint.In  Europe,  children  restraint  systems  are
defined  by  regulation  ECE-R44,  which
divides them into five weight groups:
Check  the  label  of  your  child  restraint.  All
approved  child  restraints  must  include
type-approval  data  and  the  control  mark  on
its  label.  The  label  must  be  permanently
secured  to  the  child  restraint  system.  You
should  not  remove  this  label  from  the  child
restraint.
 WARNING!
NEVER  use  a  rearward  facing  child
restraint on a seat protected by an ACTIVE
AIRBAG in front of it, DEATH or SERIOUS
INJURY to the CHILD can occur.
It is advisable to always carry children in
a child restraint system on the rear seat,
which  is  the  most  protected  position  in
the event of a collision.
Should it be necessary to carry a child on
the  passenger  side  front  seat  in  a
rear-facing  child  restraint  system,  the
passenger  side  front  air  bag  must  be
deactivated.  Always  make  sure  the
airbag deactivation indicator light is illu
-
minated  when  using  a  child  restraint
system. The passenger seat must also be
positioned backward as far as possible to
avoid  the  child  restraint  system  from
coming into contact with the dashboard.
A  deploying  passenger  front  air bag  can
cause  death  or  serious  injury  to  a  child
12 years or younger, including a child in
a rear-facing child restraint.
In a collision, an unrestrained child can
become  a  projectile  inside  the  vehicle.
The force required to hold even an infant
on  your  lap  could  become  so  great  that
you  could  not  hold  the  child,  no  matter
how strong you are. The child and others
could  be  badly  injured  or  killed.  Any
child riding in your vehicle should be in
a proper restraint for the child’s size.
 WARNING! (Continued)
Restraint Group Weight Group
Group 0 up to 10 kg
Group 0+ up to 13 kg
Group 1 9-18 kg
Group 2 15-25 kg
Group 3 22-36 kg
2020_JEEP_JL_WRANGLER_UG_RHD_UK.book  Page 118   

SAFETY
124
Seat Belts For Older Children
Children over 1.50 m in height can wear seat
belts instead of using child restraints.
Use  this  simple  5-step  test  to  decide
whether  the  seat  belt  properly  fits  the  child
or if they should still use a Group 2 or Group
3 child restraint to improve the fit of the seat
belt:
1. Can the child sit all the way back againstthe back of the vehicle seat?
2. Do  the  child’s  knees  bend  comfortably over the front of the vehicle seat – while
the child is still sitting all the way back?
3. Does  the  shoulder  belt  cross  the  child’s shoulder between the neck and arm?
4. Is  the  lap  part  of  the  belt  as  low  as possible, touching the child’s thighs and
not the stomach?
5. Can the child stay seated like this for the whole trip? If  the  answer  to  any  of  these  questions  was
“no,”  then  the  child  still  needs  to  use  a
Group 2 or 3 child restraint in this vehicle. If
the  child  is  using  the  lap/shoulder  belt,
check belt fit periodically and make sure the
seat  belt  buckle  is  latched.  A  child’s
squirming or slouching can move the belt out
of position. If the shoulder belt contacts the
face  or  neck,  move  the  child  closer  to  the
center of the vehicle, or use a booster seat to
position the seat belt on the child correctly.
ISOFIX Restraint System
Fig. E
Your  vehicle  is  equipped  with  the  child
restraint  anchorage  system  called  ISOFIX.
This  system  allows  ISOFIX-equipped  child
seats  to  be  installed  without  using  the
vehicle’s seat  belts.  The  ISOFIX  system  has
two lower anchorages located at the back of
the seat cushion where it meets the seatback
and  a  top  tether  anchorage  located  behind
the seating position.
An  example  of  a  Universal  ISOFIX  child
restraint system for weight group 1 is shown
in  fig.  E.  ISOFIX  child  restraints  are  also
available in the other weight groups. WARNING!
Never  allow  a  child  to  put  the  shoulder
belt under an arm or behind their back. In
a crash, the shoulder belt will not protect a
child properly, which may result  in serious
injury  or  death.  A  child  must  always  wear
both  the  lap  and  shoulder  portions  of  the
seat belt correctly.
2020_JEEP_JL_WRANGLER_UG_RHD_UK.book  Page 124