
SAFETY
116
(Continued)
NOTE:
After  an  accident,  remember  to  cycle  the
ignition  to  the  STOP  (OFF/LOCK)  position
and remove the key from the ignition switch
to avoid draining the battery. Carefully check
the  vehicle  for  fuel  leaks  in  the  engine
compartment  and  on  the  ground  near  the
engine  compartment  and  fuel  tank  before
resetting the system and starting the engine.
If  there  are  no  fuel  leaks  or  damage  to  the
vehicle  electrical  devices  (e.g.  headlights)
after  an  accident,  reset  the  system  by
following  the  procedure  described  below.  If
you  have  any  doubt,  contact  an  authorized
dealer.
Enhanced Accident Response System Reset 
Procedure
In  order  to  reset  the  Enhanced  Accident
Response  System  functions  after  an  event,
the  ignition  switch  must  be  changed  from
ignition  START  or  ON/RUN  to  ignition  OFF.
Carefully  check  the  vehicle  for  fuel  leaks  in
the  engine  compartment  and  on  the  ground
near  the  engine  compartment  and  fuel  tank
before  resetting the  system  and  starting  the
engine.
Maintaining Your Air Bag System 
 WARNING!
Modifications  to  any  part  of  the  air  bag
system could cause it to fail when you need
it.  You  could  be  injured  if  the  air  bag
system  is  not  there  to  protect  you.  Do  not
modify  the  components  or  wiring,
including  adding  any  kind  of  badges  or
stickers  to  the  steering  wheel  hub  trim
cover  or  the  upper  passenger  side  of  the
instrument panel.  Do  not  modify  the  front
bumper,  vehicle  body  structure,  or  add
aftermarket side steps or running boards.
It is dangerous to try to repair any part of
the  air  bag  system  yourself.  Be  sure  to
tell  anyone  who  works  on  your  vehicle
that it has an air bag system.
Do not attempt to modify any part of your
air  bag  system.  The  air  bag  may  inflate
accidentally or may not function properly
if  modifications  are  made.  Take  your
vehicle to an authorized dealer for any air
bag  system  service.  If  your  seat,
including  your  trim  cover  and  cushion,
needs  to  be  serviced  in  any  way
(including  removal  or  loosening/
tightening  of  seat  attachment  bolts),
take the vehicle to an authorized dealer.
Only  manufacturer  approved  seat
accessories  may  be  used.  If  it  is
necessary  to  modify  the  air  bag  system
for  persons  with  disabilities,  contact  an
authorized dealer.
 WARNING! (Continued)
2020_JEEP_JL_WRANGLER_UG_RHD_UK.book  Page 116   

137
(Continued)
Periodic Safety Checks You Should Make 
Outside The Vehicle
Tires 
Examine tires for excessive tread wear and uneven
wear  patterns.  Check  for  stones,  nails,  glass,  or
other  objects  lodged  in  the  tread  or  sidewall.
Inspect the tread for cuts and cracks. Inspect side-
walls for cuts, cracks, and bulges. Check the wheel
nuts for tightness. Check the tires (including spare)
for proper cold inflation pressure.
Lights        
Have  someone  observe  the  operation  of  brake
lights  and  exterior  lights  while  you  work  the
controls.  Check  turn  signal  and  high  beam  indi -
cator lights on the instrument panel.
Door Latches 
Check  for  proper  closing,  latching,  and
locking.
Fluid Leaks 
Check  area  under  vehicle  after  overnight
parking  for  fuel,  coolant,  oil,  or  other  fluid
leaks. Also, if gasoline fumes are detected or
if fuel, or brake fluid leaks are suspected, the
cause  should  be  located  and  corrected
immediately.
ALWAYS  REMOVE  THE  EXISTING
FLOOR  MAT  FROM  THE  VEHICLE 
before  installing  any  other  floor  mat.
NEVER  install  or  stack  an  additional
floor mat on top of an existing floor mat.
ONLY  install  floor  mats  designed  to  fit
your  vehicle.  NEVER  install  a  floor  mat
that  cannot  be  properly  attached  and
secured  to  your  vehicle.  If  a  floor  mat
needs  to  be  replaced,  only  use  a  FCA
approved floor mat for the specific make,
model, and year of your vehicle.
ONLY  use  the  driver’s  side  floor  mat  on
the driver’s side floor area. To check for
interference,  with  the  vehicle  properly
parked with the engine off, fully depress
the  accelerator,  the  brake,  and  the
clutch  pedal  (if  present)  to  check  for
interference.  If  your floor  mat  interferes
with the operation of any pedal, or is not
secure to the floor, remove the floor mat
from the vehicle and place the floor mat
in your trunk.
ONLY use the passenger’s side floor mat
on the passenger’s side floor area.
 WARNING! (Continued)
ALWAYS  make  sure  objects  cannot  fall
or  slide  into  the  driver’s  side  floor  area
when the vehicle is moving. Objects can
become  trapped  under  accelerator,
brake, or clutch pedals and could cause
a loss of vehicle control.
NEVER place any objects under the floor
mat  (e.g.,  towels,  keys,  etc.).  These
objects could change the position of the
floor  mat  and  may  cause  interference
with  the  accelerator,  brake,  or  clutch
pedals.
If  the  vehicle  carpet  has  been  removed
and  re-installed,  always  properly  attach
carpet  to  the  floor  and  check  the  floor
mat  fasteners  are  secure  to  the  vehicle
carpet.  Fully  depress  each  pedal  to
check  for  interference  with  the  acceler -
ator,  brake,  or  clutch  pedals  then
re-install the floor mats.
It is recommended to only use mild soap
and water to clean your floor mats. After
cleaning,  always  check  your  floor  mat
has  been  properly  installed  and  is
secured  to  your  vehicle  using  the  floor
mat fasteners by lightly pulling mat.
 WARNING! (Continued)
2020_JEEP_JL_WRANGLER_UG_RHD_UK.book  Page 137   

STARTING AND OPERATING
152
(the  “FRONT  +  REAR”  will  illuminate).
When  the  rear  axle  is  locked,  pushing  the
bottom of switch again will lock or unlock the
front axle.
NOTE:
The indicator lights will flash until the axles
are fully locked or unlocked.
To  unlock  the  axles,  push  the  AXLE  LOCK
OFF button.
Axle  lock  will  disengage  if  the  vehicle  is
taken  out  of  4L  (Low)  range,  or  the  ignition
switch is turned to the OFF position.
The  axle  lock  disengages  at  speeds  above
30 mph  (48 km/h),  and  will  automaticallyre-lock  once  vehicle  speed  is  less  than
10 mph (16 km/h).
Electronic Sway Bar Disconnect — If 
Equipped 
Your vehicle may  be equipped with an elec -
tronic 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 steering column).
SWAY BAR Switch
Push  the  SWAY  BAR  switch  to  activate  the
system. Push the switch again to deactivate
the  system.  The  “Sway  Bar  Indicator Light”
(located  in  the  instrument  cluster)  will  illu -
minate  when  the  bar  is  disconnected.  The
“Sway  Bar Indicator Light”  will flash during
activation  transition,  or  when  activation
conditions  are  not  met.  The  stabilizer/sway
bar  should  remain  in  on-road  mode  during
normal driving conditions. To disconnect the stabilizer/sway bar, shift to
either  4H  or  4L  and  push  the  SWAY  BAR
switch  to  obtain  the off-road  position. Refer
to  “Four-Wheel  Drive  Operation”  in  this
section  for  further  information.  The  “Sway
Bar Indicator Light” will flash until the stabi
-
lizer/sway bar has been fully disconnected.
 WARNING!
Ensure  the  stabilizer/sway  bar  is
reconnected  before  driving  on  hard
surfaced roads or at speeds above 18 mph
(29 km/h);  a  disconnected  stabilizer/sway
bar  may  contribute  to  the  loss  of  vehicle
control,  which  could  result  in  serious
injury.  Under  certain  circumstances,  the
front  stabilizer/sway  bar  enhances  vehicle
stability  and  assists  with  vehicle  control.
The  system  monitors  vehicle  speed  and
will  attempt  to  reconnect  the  stabilizer/
sway  bar  at  speeds  over  18 mph  (29 km/
h).  This  is  indicated  by  a  flashing  or  solid
“Sway  Bar  Indicator  Light.”  Once  vehicle
speed  is  reduced  below  14 mph  (22 km/
h),  the  system  will  once  again  attempt  to
return to off-road mode.
2020_JEEP_JL_WRANGLER_UG_RHD_UK.book  Page 152   

171
NOTE:
When the fuel nozzle “clicks” or shuts off,
the fuel tank is full.
Tighten the fuel filler cap about a quarter
turn  until  you  hear  one  click.  This  is  an
indication  that  the  cap  is  properly  tight-
ened.
If the fuel filler cap is not tightened prop -
erly,  the  MIL  will  come  on.  Be  sure  the
cap is tightened every time the vehicle is
refueled.
AdBlue® (UREA) — If Equipped
The  vehicle  is  equipped  with  an  AdBlue®
UREA  injection  system  and  Selective  Cata -
lytic Reduction to meet emission standards.
These  two  systems  ensure  compliance  with
the  diesel  emissions  requirements;  at  the
same,  they ensure  fuel-efficiency, handling,
torque and power. For messages and system
warnings,  refer  to  the  “Warning  Lights  And
Messages”  in  the  “Getting  To  Know  Your
Instrument Panel" section. AdBlue® (UREA)
is a very stable product with a long shelf life.
Stored  at  temperatures  LOWER  than  90°F
(32°C), it has a shelf life of at least one year.
For  more  information  on  the  AdBlue®
(UREA)  liquid  type,  see  the  “Fluids  and
lubricants” in the “Technical specifications”
section.  The  vehicle  is  equipped  with  an
automatic  AdBlue®  (UREA)  heating  system
when  the  engine  starts  allowing  the  system
to work correctly at temperatures lower than
12°F (-11°C).
NOTE:
AdBlue®  (UREA)  freezes  at  temperatures
lower than 12°F (-11°C).Do not apply any object/cap to the end of
the  filler  which  is  not  provided  for  the
car.  The  use  of  non-compliant  objects/
plugs  could  cause  a  pressure  increase
inside  the  tank,  resulting  in  dangerous
situations.
A fire may result if fuel is pumped into a
portable  container  that  is  inside  of  a
vehicle.  You  could  be  burned.  Always
place  fuel  containers  on  the  ground
while filling.
 CAUTION!
Damage  to  the  fuel  system  or  emission
control  system  could  result  from  using
an  improper  fuel  filler  cap.  A  poorly
fitting  cap  could  let  impurities  into  the
fuel  system.  Also,  a  poorly  fitting  after -
market  cap  can  cause the  “Malfunction
Indicator Light (MIL)” to illuminate, due
to fuel vapors escaping from the system.
To avoid fuel spillage and overfilling, do
not “top off” the fuel tank after filling.
 WARNING! (Continued)
 CAUTION!
For diesel engines, only use diesel fuel for
motor vehicles in accordance with EN 590
European  specifications.  The  use  of  other
products  or  mixtures  may  damage  the
engine  beyond  repair  and  consequently
void  the  warranty,  due  to  the  damage
caused. If you accidentally introduce other
types of fuel into the tank, do not start the
engine.  Empty  the  tank.  If  the  engine  has
been  run  for  even  an  extremely  limited
amount  of  time,  you  must  not  only  drain
the  fuel  tank,  but  the  rest  of  the  supply
circuit as well.
2020_JEEP_JL_WRANGLER_UG_RHD_UK.book  Page 171   

STARTING AND OPERATING
172
AdBlue® (UREA) Storage
AdBlue® (UREA) is considered a very stable
product  with  a  long  shelf  life.  If  AdBlue®
(UREA) is kept in temperatures between 10°
and  90°F  (-12°  and  32°C),  it  will  last  a
minimum of one year.
AdBlue® (UREA) is subject to freezing at the
lowest temperatures. For example, AdBlue®
(UREA)  may  freeze  at  temperatures  at  or
below  12°F  (-11°C).  The  system  has  been
designed to operate in this environment.
NOTE:
When  working  with  AdBlue®  (UREA),  it  is
important to know that: 
Any  containers  or  parts  that  come  into
contact  with  AdBlue®  (UREA)  must  be
AdBlue®  (UREA)  compatible  (plastic  or
stainless steel). Copper, brass, aluminum,
iron  or  non-stainless  steel  should  be
avoided as they are subject to corrosion by
AdBlue® (UREA).
If AdBlue® (UREA) is spilled, it should be
wiped up completely.
Adding AdBlue® (UREA)
Preliminary Conditions
AdBlue®  (UREA)  freezes  at  temperatures
lower than 12°F (-11°C). If the car stands for
a  long  time  at  this  temperature  refilling
could  be  difficult.  For  this  reason,  it  is
advised to park  the vehicle  in  a garage  and/
or heated environment and wait for the urea
to return to liquid state before topping up.
Proceed as follows:
Park  the  car  on  flat  ground  and  stop  the
engine by  placing  the  ignition  to  the  OFF
position.
Open the fuel door, undo  and remove  the
cap  (blue)  from  the  AdBlue®  (UREA)
filler.
Refilling With Nozzles
You  can  fill  up  at  any  AdBlue®  (UREA)
distributor.
Proceed as follows:
Insert  the  AdBlue®  (UREA)  nozzle  in  the
filler, start refilling and stop refilling at the
first  shut-off  (the  shut-off  indicates  that the AdBlue® (UREA) tank is full). Do not
proceed  with  the  refilling,  to  prevent
spillage of AdBlue® (UREA).
Extract the nozzle.
Refilling With Containers
Proceed as follows:
Check the expiration date.
Read the advice for use on the label before
pouring  the  content  of the bottle  into  the
AdBlue® (UREA) tank.
If  systems  which  cannot  be  screwed  in
(e.g. tanks) are used for refilling, after the
indication  appears  on  the  instrument
panel display refer to “Warning lights And
Messages”  in  the  “Getting  To  Know  Your
Instrument Panel” for further information,
fill  the  AdBlue®  (UREA)  tank  with  no
more than 2 Gallons (8 liters).
If containers which can be screwed to the
filler  are  used,  the  reservoir  is  full  when
the  AdBlue®  (UREA)  level  in  the
container  stops  pouring  out.  Do  not
proceed further.
2020_JEEP_JL_WRANGLER_UG_RHD_UK.book  Page 172   

173
Operations After Refilling
Proceed as follows:
Fit the cap back on the AdBlue® (UREA)
filler by turning it clockwise and screwing
it completely.
Place the ignition in RUN (it is not neces-
sary to start the engine).
Wait  for  the  indication  on  the  instrument
panel  to  switch  off  before  moving  the  car.
The indication may stay on for a few seconds
to approximately half a minute. If the engine
is  started  and  the  car  is  moved,  the  indica-
tion  will  remain  on  for  longer.  This  will  not
compromise engine operation.
If  the  AdBlue®  (UREA)  was  topped  up
when  the  tank  was  empty,  wait  for
2 minutes before starting the engine.
NOTE:
If  AdBlue®  (UREA)  is  spilled  out  of  the
filler  neck,  clean  up  well  the  area  and
proceed  to  filling  up  again.  If  the  liquid
crystallizes, eliminate it with a sponge and
warm water.
DO NOT EXCEED THE MAXIMUM LEVEL:
this  could  cause  damage  to  the  reservoir.
AdBlue®  (UREA)  freezes  at  under  12°F
(-11°C).  Although  the  system  is  designed
to operate below the  freezing point of  the
AdBlue® (UREA), it is advisable not to fill
the  tank  beyond  the  maximum  level
because  if  the  AdBlue®  (UREA)  freezes
the  system  can  be  damaged.  Follow  the
instructions in this section.
If  the  AdBlue®  (UREA)  is  spilled  on
painted  surfaces  or  aluminum,  immedi -
ately  clean  the  area  with  water  and  use
absorbent material to collect the fluid that
has been spilled on the ground.
Do  not  try  to  start  the  engine  if  AdBlue®
(UREA)  was  accidentally  added  to  the
diesel fuel tank, this can result in serious
engine  damage,  contact  an  authorized
dealer.
Do  not  add  additives  or  other  fluids  to
AdBlue® (UREA), doing so could damage
the system.
The  use  of  non-conforming  or  degraded
AdBlue®  (UREA) may  lead to  indications
appearing on the instrument panel display
refer to “Warning Lights And Messages” in
the  “Getting  To  Know  Your  Instrument
Panel” for further information.
Never pour AdBlue® (UREA) into another
container: it could be contaminated.
If the AdBlue® (UREA) runs out, see refer
to “Warning Lights And Messages”  in  the
“Getting To Know Your Instrument Panel”
for  further  information  to  continue  using
the car normally.
2020_JEEP_JL_WRANGLER_UG_RHD_UK.book  Page 173   

185
F09– –Spare
F10 –15 Amp Blue Key  Ignition  Node  (KIN)/Radio  Frequency  Hub  (RF  HUB)/
Electric Steering Column Lock (ESCL)
(*)
F11 –10 Amp Red UCI Port (USB & AUX)
F12 –25 Amp Clear HIFI Amplifier
F13 – –Spare
F14 – –Spare
F15 –15 Amp Blue Instrument  Panel  Cluster  (IPC)/Switch  Bank-Heavy  Duty
Electrical Pkg (SWITCH BANK-HD ELEC)
(*)
F16 – –  
Spare
F17 – –Spare
F18 –10 Amp Red Air Conditioning Clutch (AC CLUTCH)
(*)
F19 – –Spare
F20 30 Amp Pink –Central Body Controller (CBC) 1-INTERIOR LIGHTS
F21 –20 Amp Yellow REAR WIPER
F22 –10 Amp Red Engine  Control  Module  (ECM)/Powertrain  Control  Module
(PCM)/Motor  Generator  Unit  (MGU)  WAKE  UP/Power  Pack
Unit (PPU) WAKE UP
(*)
F23 –10 Amp Red Powertrain  Control  Module  (PCM)/Engine  Control  Module
(ECM)
(*)
CavityCartridge Fuse Micro Fuse Description
2020_JEEP_JL_WRANGLER_UG_RHD_UK.book  Page 185   

IN CASE OF EMERGENCY
186
F24– –Spare
F25 –10 Amp Red Module Shift By Wire (MOD_SBW)
(*)
F26 40 Amp Green –Central Body Controller (CBC) 2-EXTERIOR LIGHTS #1
F27 30 Amp Pink –
   Front Wipers
F28 40 Amp Green –Central Body Controller (CBC) 3-POWER LOCKS
F29 40 Amp Green –Central Body Controller (CBC) 4-EXTERIOR LIGHTS #2
F30 – –Spare
F31 –10 Amp Red DIAGNOSTIC PORT
(*)
F32 –10 Amp Red Heating Ventilation Air Conditioning Mod (HVAC CTRL MOD)/
Steering  Column  Lock  (SCL)/Occupant  Classification  Module
(OCM)/Driver Presence Detection Module (DPDM)
(*)
F33 –10 Amp Red ParkTronics  System  (PTS)/Infrared  Camera  Module  (IRCM)/
Airbag Disable Lamps (AIRBAG DISABLE LMPS)
(*)
F34 –10 Amp Red Electronic  Stability  Control  (ESC)/Electric  Hydraulic  Power
Steering  (EHPS)/Smart  Bar  Control  Module  (SBCM)  WAKE
UP
(*)
F35 30 Amp Pink –BRAKE VAC PMP — If Equipped
(*)
F36 30 Amp Pink –TRAILER TOW MOD — If Equipped
F37 30 Amp Pink –TRAILER TOW CONN 7W — If Equipped
Cavity Cartridge Fuse Micro Fuse Description
2020_JEEP_JL_WRANGLER_UG_RHD_UK.book  Page 186