
67
 — Engine Coolant Temperature Warning 
Light 
This  warning  light  warns  of  an  overheated
engine  condition.  If  the  engine  coolant
temperature  is  too  high,  this  indicator  will
illuminate  and  a  single chime will sound. If
the  temperature  reaches  the  upper  limit,  a
continuous  chime  will  sound  for  four
minutes  or  until  the  engine  is  able  to  cool;
whichever comes first.
If the light turns on while driving, safely pull
over and stop  the vehicle.  If  the A/C  system
is on, turn it off. Also, shift the transmission
into  Park  and  allow  the  vehicle  to  sit  idle
(propulsion  system  active).  If  the  tempera -
ture reading  does not  return to normal,  turn
the  engine  off  immediately  and  call  for
service.
Refer  to  “If  Your  Engine  Overheats”  in  “In
Case Of Emergency” for further information.
 — Hood Open Warning Light
This indicator will illuminate when the hood
is ajar/open or not fully closed.
NOTE:
If the vehicle is moving, there will also be a
single chime.
 — Oil Pressure Warning Light  
This warning light will illuminate to indicate
low engine oil pressure. If the light turns on
while  driving,  stop  the  vehicle,  shut  off  the
engine  as  soon  as  possible,  and  contact  an
authorized  dealer. A  chime will sound when
this light turns on.
Do not operate the vehicle until the cause is
corrected.  This  light  does  not  indicate  how
much oil is in the engine. The engine oil level
must be checked under the hood.
 — Oil Temperature Warning Light
This warning light will illuminate to indicate
the  engine  oil  temperature  is  high.  If  the
light turns on while driving, stop the vehicle
and shut off the engine as soon as possible.
Wait  for  oil  temperature  to  return  to  normal
levels.
 — Seat Belt Reminder Warning Light 
This warning light indicates when the driver
or  passenger  seat  belt  is  unbuckled.  When
the ignition is first placed in the ON/RUN or
ACC/ON/RUN  position  and  if  the  driver’s
seat  belt  is  unbuckled,  a  chime  will  sound
and  the  light  will  turn  on.  When  driving,  if the  driver  or  front  passenger  seat  belt
remains unbuckled, the Seat Belt Reminder
Light  will  flash  or  remain  on  continuously
and a chime will sound.
Refer  to  “Occupant  Restraint  Systems”  in
“Safety” for further information.
 — Rear Seat Belt Reminder Warning Light 
— If Equipped 
This  light  indicates  when  a  rear  seat  belt  is
unbuckled in the second row. When the igni -
tion  is  first  placed  in  the  ON/RUN  or  ACC/
ON/RUN  position,  and  if  a  seat  belt  in  the
second  row  is  unbuckled,  a  light  corre -
sponding to the  specific seat will turn on in
the  upper  right  portion  of  the  instrument
cluster  display,  momentarily  replacing  the
configurable corner information. If a second
row seat belt that was buckled at the start of
the  trip  is  unbuckled,  the  Rear  Seat  Belt
Reminder Light will change from green to red
and a single chime will sound.
Refer  to  “Occupant  Restraint  Systems”  in
“Safety” for further information.
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GETTING TO KNOW YOUR INSTRUMENT PANEL
70
 — AdBlue® Injection System Failure 
Warning Light — If Equipped
This warning light  will illuminate along with
a  dedicated  message  on  the  display  (If
Equipped)  if  an  unknown  fluid  not
conforming  with  acceptable  characteristics
is  inserted,  or  if  an  average  consumption  of
AdBlue®  over  50%  is  detected.  Contact  an
authorized dealer as soon as possible.
If  the  problem  is  not  solved,  a  specific
message  will  appear  on  the  Instrument
Cluster Display whenever a certain threshold
is reached until it will no longer be possible
to start the engine. When  about  125 miles  (200 km)  are
remaining  before  the  AdBlue®  tank  is
empty, a continuous dedicated message will
appear  on  the  instrument  panel,  accompa
-
nied by a buzzer sound (If Equipped).
 — Service 4WD Warning Light — If 
Equipped
This  warning  light  will  illuminate  to  signal  a
fault with the 4WD system. If the light stays on
or  comes  on  during  driving,  it  means  that  the
4WD  system  is  not  functioning  properly  and
that service is required. It is recommended you
drive to the nearest service center and have the
vehicle serviced immediately.
 — Service Forward Collision Warning 
(FCW) Light — If Equipped
This warning light will illuminate to indicate
a  fault  in  the  Forward  Collision  Warning
System.  Contact  an  authorized  dealer  for
service.
Refer  to  "Forward  Collision  Warning  (FCW)"
in "Safety" for further information.
 — Service Stop/Start System Warning 
Light — If Equipped
This  warning  light  will  illuminate  when  the
Stop/Start system is not functioning properly
and  service  is  required.  Contact  an  autho -
rized dealer for service.
 — Speed Control Fault Warning Light
This warning light will illuminate to indicate
the Speed Control System is not functioning
properly  and  service  is  required.  Contact an
authorized dealer.
 — Sway Bar Fault Warning Light
This light will illuminate when there is a fault
in the sway bar disconnect system.
 — Tire Pressure Monitoring System 
(TPMS) Warning Light 
The warning light switches on and a message
is displayed to indicate that the tire pressure
is lower than the recommended value and/or
that slow pressure loss is occurring. In these
cases,  optimal  tire  duration  and  fuel
consumption may not be guaranteed.
 CAUTION!
Prolonged  driving  with  the  Malfunction
Indicator  Light  (MIL)  on  could  cause
damage  to  the  vehicle  control  system.  It
also  could  affect  fuel  economy  and
driveability.  If  the  MIL  is  flashing,  severe
catalytic converter damage and  power loss
will  soon  occur.  Immediate  service  is
required.
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71
Should one or more tires be in the condition
mentioned  above,  the  display  will  show  the
indications corresponding to each tire.
Each  tire,  including  the  spare  (if  provided),
should  be  checked  monthly  when  cold  and
inflated  to  the  inflation  pressure  recom-
mended by  the vehicle manufacturer on  the
vehicle  placard  or  tire  inflation  pressure
label.  If  your vehicle has tires  of a  different
size  than  the  size  indicated  on  the  vehicle
placard  or  tire  inflation  pressure  label,  you
should  determine  the  proper  tire  inflation
pressure for those tires.
As an added safety feature, your vehicle has
been  equipped  with  a  Tire  Pressure  Moni -
toring System (TPMS) that illuminates a low
tire  pressure  telltale  when  one  or  more  of
your  tires  is  significantly  under-inflated.
Accordingly, when the low tire pressure tell -tale  illuminates, you should  stop and  check
your  tires  as  soon  as  possible,  and  inflate
them  to  the  proper  pressure.  Driving  on  a
significantly  under-inflated  tire  causes  the
tire  to  overheat  and  can  lead  to  tire  failure.
Under-inflation  also  reduces  fuel  efficiency
and  tire  tread  life,  and  may  affect  the
vehicle’s handling and stopping ability.
Please note that the TPMS is not a substitute
for  proper  tire  maintenance,  and  it  is  the
driver’s responsibility to maintain correct tire
pressure,  even  if  under-inflation  has  not
reached  the  level  to  trigger  illumination  of
the TPMS low tire pressure telltale.
Your  vehicle  has  also  been  equipped  with  a
TPMS  malfunction  indicator  to  indicate
when  the  system  is  not  operating  properly.
The  TPMS  malfunction  indicator  is
combined with the low tire pressure telltale.
When the system detects a malfunction, the
telltale  will  flash  for  approximately  one
minute and then remain continuously illumi
-
nated.  This  sequence  will  continue  upon
subsequent  vehicle  start-ups  as  long  as  the
malfunction  exists.  When  the  malfunction
indicator is illuminated, the system may not
be  able  to detect  or  signal  low  tire  pressure
as  intended.  TPMS malfunctions  may occur
for a variety of reasons, including the instal -lation  of  replacement  or  alternate  tires  or
wheels on the vehicle that prevent the TPMS
from functioning properly. Always check the
TPMS  malfunction  telltale  after  replacing
one or more tires or wheels on your vehicle to
ensure  that  the  replacement  or  alternate
tires and wheels allow the TPMS to continue
to function properly.
 CAUTION!
Do  not  continue  driving  with  one  or  more
flat  tires  as  handling  may  be
compromised.  Stop  the  vehicle,  avoiding
sharp  braking  and  steering.  If  a  tire
puncture  occurs, repair immediately  using
the dedicated tire repair kit and contact an
authorized dealer as soon as possible.
 CAUTION!
The  TPMS  has  been  optimized  for  the
original  equipment  tires  and  wheels.
TPMS  pressures  and  warning  have  been
established  for  the  tire  size  equipped  on
your vehicle. Undesirable system operation
or  sensor  damage  may  result  when  using
replacement  equipment  that  is  not  of  the
same  size,  type,  and/or  style.  Aftermarket
wheels  can  cause  sensor  damage.  Using
aftermarket  tire  sealants  may  cause  the
Tire  Pressure  Monitoring  System  (TPMS)
sensor  to  become  inoperable.  After  using
an  aftermarket  tire  sealant  it  is
recommended that you take your vehicle to
an  authorized  dealer  to  have  your  sensor
function checked.
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GETTING TO KNOW YOUR INSTRUMENT PANEL
72
Yellow Indicator Lights/   — 4WD Indicator Light — If Equipped
This light alerts the driver that the vehicle is
in  the  four-wheel  drive  mode,  and  the  front
and rear driveshafts are mechanically locked
together forcing the front and rear wheels to
rotate at the same speed.
/   — 4WD Low Indicator Light — If 
Equipped
This light alerts the driver that the vehicle is
in the four-wheel drive LOW mode. The front
and rear driveshafts are mechanically locked
together forcing the front and rear wheels to
rotate at the same speed. Low range provides
a  greater  gear  reduction  ratio  to  provide
increased torque at the wheels.
/   — 4WD Part Time Indicator Light — 
If Equipped
This light alerts the driver that the vehicle is
in  the four-wheel drive part  time  mode,  and
the  front  and  rear  driveshafts  are  mechani -
cally  locked  together  forcing  the  front  and
rear wheels to rotate at the same speed.
 — Active Speed Limiter Fault Indicator 
Light — If Equipped
This  warning  light  will  illuminate  to  signal
when there is a fault detected with the Active
Speed Limiter.
 — Axle Locker Fault Indicator Light
This  light  indicates  when  the  front  and/or
rear axle locker fault has been detected.
 — Forward Collision Warning Off 
Indicator Light — If Equipped
This  indicator  light  illuminates  to  indicate
that Forward Collision Warning is off.
 — Front And Rear Axle Lock Indicator 
Light
This  light  indicates  when  the  front,  rear,  or
both axles have been locked. The telltale will
display  the  lock  icon  on  the  front  and  rear
axles to indicate the current lock status.
/   — Neutral Indicator Light — If 
Equipped
This light alerts the driver that the vehicle is
in the neutral mode.
 — Rear Axle Lock Indicator Light
This  light  indicates  when  the  rear  axle  lock
has been activated.
 — Rear Fog Indicator — If Equipped  
This indicator  light will illuminate when  the
rear fog lights are on.
 — Service Adaptive Cruise Control 
Warning Light — If Equipped
This  light  will  turn  on  when  a  ACC  is  not
operating and needs service. Refer to “Adap -
tive  Cruise  Control  (ACC)”  in  “Starting  And
Operating” for further information.
 — Sway Bar Indicator Light — If 
Equipped
This indicator  light will illuminate when  the
front sway bar is disconnected.
 — Wait To Start Light — If Equipped
This indicator light will illuminate for approx -
imately  two  seconds  when  the  ignition  is
turned to the RUN position. Its duration may
be  longer  based  on  colder  operating  condi -
tions. Vehicle will not initiate start until tell -
tale is no longer displayed.
2020_JEEP_JL_WRANGLER_UG_RHD_UK.book  Page 72   

73
Refer  to  “Starting  The  Engine”  in  “Starting
And Operating” for further information.
NOTE:
The  “Wait  To  Start”  telltale  may  not  illumi-
nate  if  the  intake  manifold  temperature  is
warm enough.
 — Low Diesel Exhaust Emissions Additive 
AdBlue® Indicator Light — If Equipped
The  Low  Diesel  Exhaust  Emissions  Additive
AdBlue®  indicator  light  illuminates  when
the AdBlue® (UREA) level is low.
Fill  the  AdBlue®  tank  as  soon  as  possible
with  at  least  1.3  gallons  (5  liters)  of
AdBlue®.
If  filling  the  tank  is  done  with  a  remaining
range of AdBlue® in the tank equal to zero,
you  may  need  to  wait  two  minutes  before
starting the vehicle.
Refer to “Adding AdBlue®” in “Starting And
Operating” for further information.
 — Water In Fuel Indicator Light — If 
Equipped
The “Water In Fuel Indicator Light” will illu -
minate  when  there  is  water  detected  in  the
fuel  filter.  If  this  light  remains  on,  DO  NOT start  the  vehicle  before  you  drain  the  water
from  the  fuel  filter  to  prevent  engine
damage,  and  please  see  an  authorized
dealer.
Green Indicator Lights
 — Adaptive Cruise Control (ACC) Set With 
No Target Detected Indicator Light — If 
Equipped
This  light  will  turn  on  when  the  Adaptive
Cruise  Control  is  set  and  there  is  no  target
vehicle  detected.  Refer  to  “Adaptive  Cruise
Control  (ACC)  —  If  Equipped”  in  “Starting
And Operating” for further information.
 — Adaptive Cruise Control (ACC) Set With 
Target Light — If Equipped
This  will  display  when  the  ACC  is  set  and  a
target vehicle is detected. Refer to “Adaptive
Cruise  Control  (ACC)  —  If  Equipped”  in
“Starting And Operating” for further informa -
tion.
 — 4WD Auto Indicator Light — If 
Equipped
This light alerts the driver that the vehicle is
in  the  four-wheel  drive  auto  mode.  The
system  will  provide  power  to all  four  wheels
and  shift  the  power  between  the  front  and
rear  axles  as  needed.  This  will  provide
maximum traction in dry and slippery condi -
tions.
 — Active Speed Limiter SET Indicator 
Light — If Equipped With A Premium 
Instrument Cluster
This indicator  light will illuminate when  the
Active  Speed  Limiter  is  on  and  set  to  a
specific speed.
Refer  to  “Active  Speed  Limiter  —  If
Equipped”  in  “Starting  And  Operating”  for
further information.
 CAUTION!
The  presence  of  water  in  the  fuel  system
circuit  may  cause  severe  damage  to  the
injection  system  and  irregular  engine
operation.  If  the  indicator  light  is
illuminated,  contact  an  authorized  dealer
as soon as possible to bleed the system. If
the  above  indications  come  on
immediately  after  refuelling,  water  has
probably been poured into the tank: switch
the engine off immediately and contact an
authorized dealer.
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GETTING TO KNOW YOUR INSTRUMENT PANEL
74
 — Cruise Control SET Indicator Light — If 
Equipped With A Premium Instrument Cluster  
This  indicator  light  will  illuminate  when  the
speed control is set to the desired speed. Refer
to “Speed Control — If Equipped” in “Starting
And Operating” for further information.
 — Front Fog Indicator Light — If Equipped
This indicator  light will  illuminate when  the
front fog lights are on.
 — Park/Headlight On Indicator Light 
This indicator  light will  illuminate when  the
park lights or headlights are turned on.
 — Rear Seat Belt Fastened Indicator Light 
— If Equipped 
This light indicates when a rear seat belt has
been  buckled  in  the  second  row.  A  telltale
will  display  in  the  upper  right  corner  of  the
instrument  cluster  display  to  correspond  to
the  specific  seating  position  once  the  seat
belt has been buckled.
Refer  to  “Occupant  Restraint  Systems”  in
“Safety” for further information.
 — Stop/Start Active Indicator Light — If 
Equipped
This indicator  light will  illuminate when  the
Stop/Start function is in “Autostop” mode.
 — Turn Signal Indicator Lights  
When the left or right turn signal is activated,
the  turn  signal  indicator  will  flash  inde -
pendently  and  the  corresponding  exterior
turn signal lamps will flash. Turn signals can
be activated when the multifunction lever is
moved down (left) or up (right).
NOTE:
A  continuous  chime  will  sound  if  the
vehicle  is  driven  more  than  1 mile
(1.6 km) with either turn signal on.
Check for an inoperative outside light bulb
if either indicator flashes at a rapid rate.
White Indicator Lights
 — Adaptive Cruise Control (ACC) Ready 
Light — If Equipped
This  light  will  turn  on  when  the  vehicle
equipped with Adaptive Cruise Control (ACC)
has  been  turned  on,  but  not  set.  Refer  to
“Adaptive  Cruise  Control  (ACC)  —  If
Equipped”  in  “Starting  And  Operating”  for
further information.
 — Two Wheel Drive High Indicator Light 
— If Equipped With a Premium Cluster
This light alerts the driver that the vehicle is
in the two wheel drive high mode.
 — Active Speed Limiter Ready Indicator 
Light — If Equipped With A Premium 
Instrument Cluster
This light will illuminate when the Active Speed
Limiter has been turned on, but not set.
Refer  to  “Active  Speed  Limiter  —  If
Equipped”  in  “Starting  And  Operating”  for
further information.
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75
 — Active Speed Limiter SET Indicator 
Light — If Equipped With A Base Instrument 
Cluster
This light will turn on when the Active Speed
Limiter is on and set to a specific speed.
Refer  to  “Active  Speed  Limiter  —  If
Equipped”  in  “Starting  And  Operating”  for
further information.
 — Hill Descent Control (HDC) Indicator 
Light — If Equipped
This  indicator  shows  when  the  Hill  Descent
Control (HDC) feature is turned on. The lamp
will be on solid when HDC is armed. HDC can
only  be  armed  when  the  transfer  case  is  in
the  “4WD  LOW”  position  and  the  vehicle
speed  is  less  then  30 mph  (48 km/h).  If
these  conditions  are  not  met  while
attempting to use the HDC feature, the HDC
indicator light will flash on/off.
 — Rear Seat Belt Fastened Indicator Light 
— If Equipped 
This light indicates when a rear seat belt has
been  buckled  in  the  second  row.  A  telltale
will  display  in  the  upper  right  corner  of  the
instrument  cluster  display  to  correspond  to
the  specific  seating  position  once  the  seat
belt has been buckled.
Refer  to  “Occupant  Restraint  Systems”  in
“Safety” for further information.
 — Rear Seat Belt Reminder Indicator 
Light — If Equipped 
This  light  indicates  when  a  rear  seat  belt  is
unbuckled  in  the  second  row.  When  the  igni -
tion is first placed in  the  ON/RUN or  ACC/ON/
RUN position,  and if a seat belt  in the second
row  is  unbuckled,  a light  corresponding  to  the
specific  seat  will  turn  on  in  the  upper  right
portion  of  the  instrument  cluster  display,
momentarily  replacing  the  configurable  corner
information. If a second row seat belt that was
buckled  at  the  start  of  the  trip  is  unbuckled,
the Rear Seat Belt Reminder Light will change
from the buckled to the unbuckled symbol, and
a chime will sound.
Refer  to  “Occupant  Restraint  Systems”  in
“Safety” for further information.
 — Rear Seat Unoccupied Indicator Light 
— If Equipped 
This light indicates when the rear passenger
seats  are unoccupied, and will illuminate in
the  upper  right  portion  of  the  instrument
cluster  display,  momentarily  replacing  the
configurable corner information.
Refer  to  “Occupant  Restraint  Systems”  in
“Safety” for further information.
 — Speed Warning Indicator Light — If 
Equipped
When  Set  Speed  Warning  is  turned  on,  the
speed  warning  telltale  will  illuminate  in  the
instrument  cluster  with  a  number  matching
the  set  speed.  When  the  set  speed  is
exceeded, the indication will light up yellow
and flash along with a continuous chime (up
to 10 seconds or until the speed is no longer
exceeded). Speed Warning can be turned on
and off in the instrument cluster display, for
further  information  refer  to  “Instrument
Cluster  Display  Menu  Items”  in  “Getting To
Know Your Instrument Panel.”
The  number  “55”  is  only  an  example  of  a
speed that can be set.
2020_JEEP_JL_WRANGLER_UG_RHD_UK.book  Page 75   

SAFETY
82
(Continued)
Full Off — If Equipped
The “Full Off” mode is intended for off-highway or
off-road use only  and should  not  be  used  on any
public  roadways.  In  this  mode,  TCS  and  ESC
features  are  turned  off.  To  enter  the  “Full  Off”
mode,  push  and  hold  the  “ESC  OFF”  switch  for
five seconds while the vehicle is stopped with the
engine  running.  After  five  seconds,  a  chime  will
sound, the “ESC OFF Indicator Light” will illumi-
nate, and the “ESC OFF” message will display in
the  instrument  cluster.  To  turn  ESC  On  again,
momentarily push the “ESC OFF” switch.
 NOTE:
System  may  switch  from  ESC  “Full  Off”  to
“Partial  Off”  mode  when  vehicle  exceeds  a
predetermined  speed.  When  the  vehicle
speed slows below the predetermined speed
the system will return to ESC “Full Off”.
ESC  modes  may  also  be  affected  by  drive
modes (if equipped).
ESC Activation/Malfunction Indicator Light 
And ESC OFF Indicator Light 
The  “ESC  Activation/Malfunction
Indicator  Light”  in  the  instrument
cluster  will  come  on  when  the  igni
-
tion is turned to the “ESC On” mode.
It should go out with the engine running. If the
“ESC  Activation/Malfunction  Indicator  Light”
comes  on  continuously  with  the  engine
running,  a  malfunction  has  been  detected  in
the  ESC  system.  If  this  light  remains  on  after
several  ignition  cycles,  and  the  vehicle  has
been  driven  several  miles  (km)  at  speeds
greater than 30 mph (48 km/h), see an autho -
rized  dealer  as  soon  as  possible  to  have  the
problem diagnosed and corrected.
 WARNING!
When in “Partial Off” mode, the TCS func -
tionality of ESC, (except for the limited slip
feature described in the TCS section), has
been  disabled  and  the  “ESC  Off  Indicator
Light”  will  be  illuminated.  When  in
“Partial  Off”  mode,  the  engine  power
reduction  feature  of  TCS  is  disabled,  and
the  enhanced  vehicle  stability  offered  by
the ESC system is reduced.
Trailer  Sway  control  (TSC)  is  disabled
when  the  ESC  system  is  in  the  “Partial
Off” mode.
 WARNING!
In  the ESC  “Full Off” mode, the  engine
torque  reduction  and  stability  features
are  disabled.  Therefore,  enhanced
vehicle  stability  offered  by  the  ESC
system  is  unavailable.  In  an  emergency
evasive  maneuver,  the  ESC  system  will
not  engage  to  assist  in  maintaining
stability.  ESC  “Full  Off”  mode  is
intended  for  off-highway  or  off-road  use
only.
The  Electronic  Stability  Control  (ESC)
cannot  prevent  the  natural  laws  of
physics  from  acting  on  the  vehicle,  nor
can  it  increase  the  traction  afforded  by
prevailing  road  conditions.  ESC  cannot
prevent  all  accidents,  including  those
resulting from  excessive speed  in  turns,
driving  on  very  slippery  surfaces,  or
hydroplaning.  ESC  also  cannot  prevent
collisions.
 WARNING! (Continued)
2020_JEEP_JL_WRANGLER_UG_RHD_UK.book  Page 82