2020 JEEP WRANGLER UNLIMITED ECU

4
WELCOME FROM FCA
HOW TO FIND YOUR OWNER’S MANUAL
ONLINE ................................................... 1
HOW TO USE THIS MANUAL
HOW TO USE THIS MANUAL ..................... 2
Essential Information ........................ 2
Symbols .......................................... 2
ROLLOVER WARNING ............................... 2
WARNINGS AND CAUTIONS ..................... 2

VEHICLE MODIFICATIONS/ALTERATIONS .... 2

GETTING TO KNOW YOUR VEHICLE
KEYS ................................................... 11
Key Fob ......................................... 11
IGNITION SWITCH .................................. 12
Keyless Enter-N-Go — Ignition ........ 12
REMOTE STARTING SYSTEM —
IF EQUIPPED .......................................... 14
How To Use Remote Start ............... 14
To Enter Remote Start Mode............ 15
VEHICLE SECURITY ALARM —
IF EQUIPPED ......................................... 15
To Arm The System ....................... 15
To Disarm The System ................... 15
PREMIUM VEHICLE SECURITY ALARM —
IF EQUIPPED .........................................16
To Arm The System ........................ 16
To Disarm The System .................... 17
Security System Manual Override..... 17
DOORS ................................................. 18
Keyless Enter-N-Go — Passive Entry
(If Equipped) ................................ 18 Child-Protection Door Lock System —
Rear Doors..................................... 20 Front Door Removal ........................ 21
Rear Door Removal
(Four-Door Models) ........................ 23
SEATS................................................... 24
Heated Seats — If Equipped ........... 25
Front Passenger Easy Entry Seat —
Two Door Models ............................ 26 60/40 Split Folding Rear Seat —
Four Door Models ........................... 26 Fold And Tumble Rear Seat —
Two Door Models ............................ 27
HEAD RESTRAINTS.................................28
Front Head Restraints ..................... 28
Rear Head Restraints — Two Door
Models .......................................... 29 Rear Head Restraints — Four Door
Models .......................................... 30
STEERING WHEEL ..................................31
Tilt/Telescoping Steering Column .....31
Heated Steering Wheel —
If Equipped ....................................31
EXTERIOR LIGHTS ..................................32
Headlight Switch ............................32
Daytime Running Lights —
If Equipped ...................................32 High/Low Beam Switch....................32
Automatic High Beam —
If Equipped ....................................33 Flash-To-Pass .................................33
Automatic Headlights —
If Equipped ...................................33 Front And Rear Fog Lights —
If Equipped ....................................33 Turn Signals ...................................34
Lights-On Reminder ........................34
Headlight Leveling System — If
Equipped ......................................34
WINDSHIELD WIPERS AND WASHERS......35
Windshield Wiper Operation .............35
CLIMATE CONTROLS ...............................36

Automatic Climate Controls Overview ....37

Climate Control Functions................44
Automatic Temperature Control (ATC) —
If Equipped ....................................44 Operating Tips ...............................45
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POWER WINDOWS — IF EQUIPPED ........ 46
Auto-Down Feature ........................ 46
Wind Buffeting .............................. 47
REMOVABLE TOP INFORMATION ............. 47
Soft Top — Two And Four Door
Models ......................................... 47 Freedom Top And Hard Top ............. 51
Dual Top — If Equipped ................ 53
POWER SLIDING TOP — IF EQUIPPED ...... 53
Opening The Power Top .................. 54
Closing The Power Top .................... 54
Pinch Protect Feature ..................... 54
HOOD .................................................... 55
Opening The Hood .......................... 55
Closing The Hood ........................... 55
REAR SWING GATE................................. 55
INTERNAL EQUIPMENT ........................... 56
Electrical Power Outlets .................. 56
Power Inverter — If Equipped ......... 57
Auxiliary Switches — If Equipped .... 58
ROOF LUGGAGE RACK — IF EQUIPPED ..... 58
ENVIRONMENTAL PROTECTION
SYSTEMS — IF EQUIPPED ...................... 59 GETTING TO KNOW YOUR INSTRUMENT
PANEL
INSTRUMENT CLUSTER DISPLAY ............ 60
Instrument Cluster Display Location
And Controls .................................. 60 Oil Change Indicator System —
If Equipped .................................. 61 Instrument Cluster Display
Selectable Items ........................... 61 Gear Shift Indicator (GSI) —
If Equipped ................................... 62 Diesel Displays .............................. 62
Diesel Particulate Filter (DPF)
Messages ..................................... 62 Fuel System Messages .................... 63
WARNING LIGHTS AND MESSAGES.......... 65
Red Warning Lights ........................ 65
Yellow Warning Lights..................... 68
Yellow Indicator Lights ................... 72
Green Indicator Lights .................... 73
White Indicator Lights .................... 74
Blue Indicator Lights ...................... 76
ONBOARD DIAGNOSTIC SYSTEM —
OBD II ..................................................77
Onboard Diagnostic System (OBD II)
Cybersecurity ................................. 77
SAFETY
SAFETY FEATURES .................................78
Anti-Lock Brake System (ABS) ........78
Electronic Brake Control (EBC)
System .........................................79
AUXILIARY DRIVING SYSTEMS ................87
Blind Spot Monitoring (BSM) —
If Equipped ...................................87 Forward Collision Warning (FCW) With
Mitigation — If Equipped ................89 Tire Pressure Monitoring
System (TPMS) ..............................92
OCCUPANT RESTRAINT SYSTEMS ..........97
Occupant Restraint Systems
Features ........................................97 Important Safety Precautions ...........97
Seat Belt Systems ..........................98
Supplemental Restraint
Systems (SRS)..............................104 Child Restraints — Carrying Children
Safely ..........................................117 Transporting Pets .........................134
SAFETY TIPS ......................................135
Transporting Passengers ................135
Exhaust Gas ................................135
Safety Checks You Should Make
Inside The Vehicle .......................136 Periodic Safety Checks You Should
Make Outside The Vehicle..............137
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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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CUSTOMER ASSISTANCE
IF YOU NEED ASSISTANCE ................... 304
ARGENTINA ................................ 305
AUSTRALIA ................................. 305
AUSTRIA ..................................... 305
BALANCE OF THE CARIBBEAN ..... 305
BELGIUM .................................... 306
BOLIVIA ...................................... 306
BRAZIL ....................................... 306
BULGARIA................................... 306
CHILE ......................................... 306
CHINA......................................... 307
COLOMBIA .................................. 307
COSTA RICA ................................ 307
CROATIA ..................................... 307
CZECH REPUBLIC........................ 307
DENMARK ................................... 308
DOMINICAN REPUBLIC ................ 308
ECUADOR ................................... 308
EL SALVADOR ............................. 308
ESTONIA ..................................... 308 FINLAND .................................... 309
FRANCE ...................................... 309
GERMANY ................................... 309
GREECE ...................................... 310
GUATEMALA ............................... 310
HONDURAS ................................ 310
HUNGARY ................................... 310
INDIA ......................................... 310
IRELAND .................................... 311
ITALY.......................................... 311
LATVIA........................................ 311
LITHUANIA ................................. 312
LUXEMBURG .............................. 312
NETHERLANDS ........................... 312
NEW ZEALAND ............................ 313
NORWAY ..................................... 313
PANAMA ..................................... 313
PARAGUAY.................................. 313
PERU.......................................... 313
POLAND...................................... 313
PORTUGAL ................................. 314 PUERTO RICO AND US VIRGIN
ISLANDS .....................................314 REUNION ....................................314
ROMANIA ....................................314
RUSSIA .......................................314
SERBIA .......................................315
SLOVAKIA....................................315
SLOVENIA ...................................315
SOUTH AFRICA ............................315
SPAIN .........................................316
SWEDEN .....................................316
SWITZERLAND.............................316
TAIWAN .......................................317
TURKEY ......................................317
UKRAINE.....................................317
UNITED KINGDOM .......................317
URUGUAY ...................................318
VENEZUELA.................................318
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GETTING TO KNOW YOUR VEHICLE
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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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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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GETTING TO KNOW YOUR VEHICLE
16
NOTE:
The driver's door key cylinder cannot arm
or disarm the vehicle security alarm.
When the vehicle security alarm is armed,
the interior power door lock switches will
not unlock the doors.
The vehicle security alarm is designed to
protect your vehicle. However, you can create
conditions where the system will give you a
false alarm. If one of the previously
described arming sequences has occurred,
the vehicle security alarm will arm regardless
of whether you are in the vehicle or not. If
you remain in the vehicle and open a door,
the alarm will sound. If this occurs, disarm
the vehicle security alarm.
If the vehicle security alarm is armed and the
battery becomes disconnected, the vehicle
security alarm will remain armed when the
battery is reconnected; the exterior lights will
flash, and the horn will sound. If this occurs,
disarm the vehicle security alarm.
PREMIUM VEHICLE
SECURITY ALARM — IF
EQUIPPED
This premium vehicle security alarm moni -
tors the vehicle doors, hood, swing gate and
ignition for unauthorized operation. When
the alarm is armed, the interior switches for
door locks, and power swing gate are
disabled. If something triggers the alarm, the
vehicle security alarm will provide the
following audible and visible signals: the
horn will pulse, and the park lamps and/or
turn signals will flash.
To Arm The System
Follow these steps to arm the security alarm:
1. Make sure the vehicle ignition system is OFF.
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” in
“Doors” in this chapter for further
information.
Push the lock button on the key fob.
3. If any doors are open, close them.
NOTE:
Once the security system is armed, it
remains in that state until you disarm it by
following either of the disarming proce-
dures described. If a power loss occurs
after arming the system, you must disarm
the system after restoring power to prevent
alarm activation.
The ultrasonic intrusion sensor (motion
detector) actively monitors your vehicle
every time you arm the security system. If
you prefer, you can turn off the ultrasonic
intrusion sensor when arming the security
system. To do so, push the lock button on
the key fob three times within 15 seconds
of arming the system (while the vehicle
security light is flashing rapidly).
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17
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. Refer to "Keyless Enter-N-Go" in
“Doors” in this chapter for further infor-
mation.
Cycle the vehicle ignition system out of
the OFF position by pushing the Keyless
Enter-N-Go START/STOP ignition button
(requires at least one valid key fob in the
vehicle).
NOTE:
The driver's door key cylinder and the lift -
gate button on the key fob cannot arm or
disarm the vehicle security alarm.
The vehicle security alarm remains armed
during power liftgate entry. Pushing the
liftgate button will not disarm the vehicle
security alarm. If someone enters the
vehicle through the liftgate and opens any
door the alarm will sound.
When the vehicle security alarm is armed,
the interior power door lock switches will
not unlock the doors.
The ultrasonic intrusion sensor (motion
detector) actively monitors your vehicle
every time you arm the security system. If
you prefer, you can turn off the ultrasonic
intrusion sensor when arming the security
system. To do so, push the lock button on
the key fob three times within 15 seconds
of arming the system (while the vehicle
security light is flashing rapidly).
The vehicle security alarm is designed to
protect your vehicle; however, you can avoid
conditions where the system may give you a
nuisance alarm. Conditions include any
person, or pet, left inside the vehicle or
hanging items that may sway (e.g. from rear
view mirrors, visors, etc). Windows and roof
panels should be closed to prevent wind,
leaves, and other debris from blowing into
the vehicle. Items left in the vehicle that may
shift over a period of time (e.g. plastic bags,
clothes, or groceries), could result in a
nuisance alarm. Additionally, extreme environmental condi
-
tions (wind, rain, hail, thunder, etc.), or
extreme noise (audio systems, traffic condi -
tions, trains, etc.), or direct impacts to the
vehicle may result in a nuisance alarming
condition.
If one of the previously described arming
sequences has occurred, the vehicle security
alarm will arm regardless of whether you are
in the vehicle or not. If you remain in the
vehicle and open a door, the alarm will
sound. If this occurs, disarm the vehicle
security alarm.
If the vehicle security alarm is armed and the
battery becomes disconnected, the vehicle
security alarm will remain armed when the
battery is reconnected; the exterior lights will
flash, the horn will sound. If this occurs,
disarm the vehicle security alarm.
Security System Manual Override
The system will not arm if you lock the doors
using the manual door lock.
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