
77
(Continued)
(Continued)
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 govern -
ment regulations.
If  any  of  these  systems  require  service,  the
OBD  II  system  will  turn  on  the  Malfunction
Indicator Light (MIL). It will also store diag -
nostic  codes and other information to assist
your  service  technician  in  making  repairs.
Although  your  vehicle  will  usually  be  drive -
able and not need towing, see an authorized
dealer for service as soon as possible.
Onboard Diagnostic System (OBD II) 
Cybersecurity
Your vehicle is required to have an Onboard
Diagnostic system (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. For further information, refer to “Cybersecu-
rity”  in  “Multimedia”  in  your  Owner’s
Manual.
 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.
 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.
 CAUTION! (Continued)
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, information  stored  in  your  vehicle
systems, including personal informa-
tion.
 WARNING! (Continued)
2020_JEEP_JL_WRANGLER_UG_RHD_UK.book  Page 77   

SAFETY
98
(Continued)
3. If a child from 2 to 12 years old (not in arear-facing  child  restraint)  must  ride  in
the  front  passenger  seat,  move  the  seat
as  far  back  as  possible  and  use  the
proper  child  restraint.  Refer  to  “Child
Restraints”  in  this  section  for  further
information.
4. Never allow children to slide the shoulder belt behind them or under their arm.
5. You  should  read  the  instructions provided with your child restraint to make
sure that you are using it properly.
6. All  occupants  should  always  wear  their lap and shoulder belts properly.
7. The  driver  and  front  passenger  seats should be moved back as far as practical
to allow the front air bags room to inflate.
8. Do  not  lean  against  the  door  or  window. If  your  vehicle  has  side  air  bags,  and
deployment occurs, the side air bags will
inflate  forcefully into  the space between
occupants  and  the  door  and  occupants
could be injured. 9. If the air bag system in this vehicle needs
to  be  modified  to  accommodate  a
disabled  person,  refer  to  the  “Customer
Assistance” section for customer service
contact information.
Seat Belt Systems 
Buckle up even though  you are an excellent
driver,  even  on  short  trips.  Someone  on  the
road may be a poor driver and could cause a
collision that includes you. This can happen
far away from home or on your own street.
Research  has  shown  that  seat  belts  save
lives, and they can reduce the seriousness of
injuries in a collision. Some of the worst inju -
ries happen when people are thrown from the
vehicle.  Seat  belts  reduce  the  possibility  of
ejection  and  the  risk  of  injury  caused  by
striking the inside of the vehicle. Everyone in
a motor vehicle should be belted at all times.
 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.
 WARNING! (Continued)
2020_JEEP_JL_WRANGLER_UG_RHD_UK.book  Page 98   

SAFETY
108
The  Passenger  Advanced  Front  Air  Bag  can
be  ENABLED  (ON)  or  DISABLED  (OFF)  by
selecting  the  desired  setting  in  the  instru-
ment  cluster  display  menu.  For  more  infor -
mation  on  how  to  access  the  instrument cluster  display,  refer  to  “Instrument  Cluster
Display”  in  “Getting  To  Know  Your  Instru
-
ment Panel”.
The  Passenger  Air  Bag  DISABLE  Feature
consists of the following:
Occupant Restraint Controller (ORC)
  Passenger  Air  Bag  DISABLE  (OFF)
Indicator  Light  —  an  amber  light  located
on the overhead sports bar
 Passenger Air Bag ENABLE (ON) Indi -
cator  Light  —  an  amber  light  located  on
the overhead sports bar
  Air  Bag  Warning  Light  —  an  amber
light  located  in  the  instrument  cluster
display
Passenger Air Bag Indicator Lights
 The Occupant Restraint Controller (ORC) moni
-
tors the readiness of the electronic parts of the
air  bag  system  whenever  the ignition switch  is
in  the  START  or  ON/RUN  position.  The  ORC
illuminates  the  Passenger  Air  Bag  DISABLE
(OFF)  Indicator  Light  and  the  Passenger  Air
Bag ENABLE (ON) Indicator Light on the over -
head  sports  bar  for  approximately  five  to  eight
seconds  for  a  self-check  when  the  ignition
switch  is  first  in  the  START  or  ON/RUN  posi -
tion.  After  the  self-check,  the  indicator  light
that  is  illuminated  tells  the  driver  and
passenger  the  status  of  the  Passenger
Advanced Front Air Bag. If any of the following
occurs,  have  an  authorized  dealer  service  the
air bag system immediately:
Both indicator lights do not come on as a
self-check when the ignition is first in the
START or ON/RUN position.
Both indicator lights stay on after you start
the vehicle.
Both indicator lights stay off after you start
the vehicle.
Both indicator lights come on as you drive.
Both indicator lights turn off as you drive.
 WARNING!
A DISABLED (OFF) Passenger Advanced
Front Air Bag is deactivated and will not
deploy in a collision.
A DISABLED (OFF) Passenger Advanced
Front  Air  Bag  will  not  provide  a  front
passenger  additional  protection  by
supplementing the seat belts.
Do  not  install  a  child  restraint  in  the
front  seat  unless  the  Passenger  Air  Bag
DISABLE (OFF) Indicator light   on the
overhead  sports  bar  is  illuminated  to
show that the Passenger Advanced Front
Air Bag is DISABLED (OFF).
In  a  collision,  you  and  your  passengers
can  suffer  much  greater  injuries  if  you
are  not  properly  buckled  up.  You  can
strike the interior of your vehicle or other
passengers, or you can be thrown out of
the  vehicle.  Always  be  sure  you  and
others  in  your  vehicle  are  buckled  up
properly.
2020_JEEP_JL_WRANGLER_UG_RHD_UK.book  Page 108   

STARTING AND OPERATING
156
If  the  “SERVICE  STOP/START  SYSTEM”
message  appears  in  the  instrument  cluster
display,  have  the  system  checked  by  an
authorized dealer.
ACTIVE SPEED LIMITER — IF 
EQUIPPED 
Active Speed Limiter Button
The  Active  Speed  Limiter  button  is  posi -
tioned on the right side of the steering wheel.
This  feature  allows  you  to  program  the
maximum speed of travel for your vehicle.
NOTE:
The Active Speed Limiter can be set with the
vehicle stationary, or in motion.
Activation
To  activate  the  feature,  push  the  Active
Speed  Limiter  button,  and  a  message  will
appear  along  with  an  indicator  light  in  the
instrument  cluster  display  to  signal  that
Active Speed Limiter has been activated.
Push  the  SET  (+)  and  SET  (–)  buttons  on  the
right  of  the  steering  wheel  to  raise  and  lower
the Active  Speed Limiter  to  the  desired  value.
Pushing and holding down the SET (+)  or SET
(–)  buttons  will  increase/decrease  the  speed
value by increments of 5 mph (5 km/h).
Each time that Active Speed Limiter is acti -
vated,  it  will  be  set  to  the  last  programmed
value from the previous activation.
NOTE:
The  Speed  Control  (if  equipped)  and  Adap -
tive Cruise Control (if equipped) features will
be  unavailable  while  the  Active  Speed
Limiter is in use.
Exceeding The Set Speed
By  fully  pressing  the  accelerator  pedal,  the
programmed  maximum  speed  can  be
exceeded while the device is active.
In  the  event  that  the  Active  Speed  Limiter
set value is exceeded manually with a driver
acceleration, an audible indicator will sound,
the  indicator  light  will  rapidly  flash,  and  a
message  will  appear  in  the  instrument
cluster display.
The  feature  will  remain  disabled  until  the
vehicle  speed  drops  below  the  set  Active
Speed Limiter value, where it will reactivate
automatically.
Deactivation
To  turn  off  Active  Speed  Limiter,  push  the
Active Speed Limiter button on the right side
of the steering wheel. A message will appear
in  the  instrument  cluster  display  to  confirm
that the feature has been turned off.
2020_JEEP_JL_WRANGLER_UG_RHD_UK.book  Page 156   

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.
2020_JEEP_JL_WRANGLER_UG_RHD_UK.book  Page 210   

SERVICING AND MAINTENANCE
216
Severe Duty Conditions
Change the engine oil and engine oil filter at
every  4,500 miles  (7,500 km)  or  6 months
if  using  your  vehicle  under  any  of  the
following severe duty conditions:
Stop and go driving.
Driving in dusty conditions.
Short trips of less than 10 miles (16 km).
Trailer towing.
Taxi,  police,  or  delivery  service  (commer-
cial service).
Off-road or desert operation.
Scheduled Servicing — Diesel Engine  
Your  vehicle  is  equipped  with  an  automatic
oil  change  indicator  system.  The  oil  change
indicator  system  will  remind  you  that  it  is
time  to  take  your  vehicle  in  for  engine  oil
replacement.
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.
Based  on  engine  operation  conditions,  the  oil
change indicator message will illuminate. This
means that service is required for your vehicle.
Operating  conditions  such  as  frequent
short-trips,  trailer  tow,  extremely  hot  or  cold
ambient  temperatures  will  influence  when  the
“Oil  Change  Required”  message  is  displayed. Severe  Operating  Conditions  can  cause  the
change oil message to illuminate as earlier than
specified.  Have  your  vehicle  serviced  as  soon
as  possible,  within  the  next  500 miles
(805 km).
NOTE:
The actual interval for changing engine oil
and replacing the engine oil filter depends
on  the  vehicle  usage  conditions,  and  is
signaled  by  the  warning  light  or  message
in  the  instrument  panel.  In  any  case,  it
must  never  exceed  12,500 miles
(20,000 km) or 1 year
Flush  and  replace  the  engine  coolant  at
120 months or 150,000 miles (240,000 km)
whichever comes first.
The  maximum  mileage  is  75,000 mi
(120,000 km).  The  belt  must  be  replaced
every  5  years  regardless  of  distance  trav-
eled. The timing and accessory belts must be
changed every 37,500 miles (60,000 km) or
3  years  for  particularly  demanding  use
(dusty  areas,  severe  weather  conditions,
very  low  or  very  high  temperatures  for
extended  periods,  city  driving,  long  periods
of  idling).  Under  no  circumstances  should
these intervals be exceeded.
 WARNING!
You  can  be  badly  injured  working  on  or
around  a  motor  vehicle.  Do  only  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 compe-
tent mechanic.
Failure to properly inspect and maintain
your vehicle could result in a component
malfunction and effect vehicle handling
and  performance.  This  could  cause  an
accident.
2020_JEEP_JL_WRANGLER_UG_RHD_UK.book  Page 216   

235
Tire Spinning 
When  stuck  in  mud,  sand,  snow,  or  ice
conditions, do not spin your vehicle's wheels
above  30 mph  (48 km/h)  or  for  longer  than
30 seconds continuously without stopping.
Refer  to  “Freeing  A  Stuck  Vehicle”  in  “In
Case Of Emergency” for further information.
Tread Wear Indicators 
Tread  wear  indicators  are  in  the  original
equipment  tires  to  help  you  in  determining
when your tires should be replaced.Tire Tread
These indicators are molded into the bottom
of  the  tread  grooves.  They  will  appear  as
bands when the tread depth becomes a 1/16
of an inch (1.6 mm). When the tread is worn
to  the  tread  wear  indicators,  the  tire  should
be replaced.
Refer to “Replacement Tires” in this section
for further information.
Life Of Tire  
The  service  life  of  a  tire  is  dependent  upon
varying factors including, but not limited to:
Driving style
Tire pressure - Improper cold tire inflation
pressures can cause uneven wear patterns
to  develop  across  the  tire  tread.  These
abnormal  wear  patterns  will  reduce  tread
life,  resulting  in  the  need  for  earlier  tire
replacement
Distance driven
Performance  tires,  tires  with  a  speed
rating  of  V  or  higher,  and  Summer  tires
typically  have  a  reduced  tread  life.  Rota-
tion  of  these  tires  per  the  vehicle  sched -
uled maintenance is highly recommended
 WARNING!
Fast  spinning  tires  can  be  dangerous.
Forces  generated  by  excessive  wheel
speeds may cause tire damage or failure. A
tire could explode and injure someone. Do
not  spin  your  vehicle's  wheels  faster  than
30 mph  (48 km/h)  for  more  than  30
seconds  continuously  when  you  are  stuck,
and  do  not  let  anyone  near  a  spinning
wheel, no matter what the speed.1 — Worn Tire
2 — New Tire
 WARNING!
Tires and the spare tire should be replaced
after six years, regardless of the remaining
tread.  Failure  to  follow  this  warning  can
result in sudden tire failure. You could lose
control  and  have  a  collision  resulting  in
serious injury or death.
2020_JEEP_JL_WRANGLER_UG_RHD_UK.book  Page 235   

269
Press + or – next to “Set Time Hours” and
“Set Time Minutes” to adjust the time.
If  these  features  are  not  available,
uncheck the “Sync Time” box.
Press  X  to  save  your settings  and  exit  out
of the Clock Setting screen.
Background Themes
Screen  background  themes  are  selectable
from a preloaded list of themes. If you’d like
to set a theme, follow the instructions below.
1. Press  the  Settings  button  on  the  touch -
screen and select the display menu.
2. Press  the  Set  Theme  button  on  the touchscreen and select a theme.
Audio Settings
Press the Audio button on the touchscreen
to  activate  the  Audio  settings  screen  to
adjust  Balance\Fade,  Equalizer,  and
Speed Adjusted Volume.
You  can  return  to  the  Radio  screen  by
pressing the X located at the top right. Balance/Fade
Press  the  Balance/Fade  button  on  the
touchscreen to Balance audio between the
front  speakers  or  fade  the  audio  between
the rear and front speakers.
Pressing  the  Front,  Rear,  Left,  or  Right
buttons  on  the  touchscreen  or  press  and
drag  the  Speaker  Icon  to  adjust  the
Balance/Fade.
Equalizer
Press  the  Equalizer  button  on  the  touch -
screen to activate the Equalizer screen.
Press  the  +  or  –  buttons  on  the  touch -
screen, or press and drag over the level bar
for each of the equalizer bands. The level
value, which spans between plus or minus
nine, is displayed at the bottom of each of
the Bands.
Speed Adjusted Volume
Press  the  Speed  Adjusted  Volume  button
on  the  touchscreen  to  activate  the  Speed
Adjusted  Volume  screen.  The  Speed
Adjusted  Volume  is  adjusted  by  pressing
the volume level indicator. This alters the
automatic adjustment of the audio volume
with variation to vehicle speed.
Drag & Drop Menu Bar
The  Uconnect  features  and  services  in  the
main  menu  bar  are  easily  changed  for  your
convenience. Simply follow these steps:
1. Press  the  Apps    button  to  open  the App screen.
2. Press  and  hold,  then  drag  the  selected App to replace an existing shortcut in the
main menu bar.
The new app shortcut, that was dragged 
down onto the main menu bar, will now 
be an active App/shortcut.
NOTE:
This feature is only available if the vehicle is
in PARK.
2020_JEEP_JL_WRANGLER_UG_RHD_UK.book  Page 269