bulb JEEP WRANGLER UNLIMITED 2020 Owner handbook (in English)

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
2020_JEEP_JL_WRANGLER_UG_RHD_UK.book Page 7

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

65
WARNING LIGHTS AND
MESSAGES
The warning/indicator lights will illuminate
in the instrument panel together with a dedi-
cated message and/or acoustic signal when
applicable. These indications are indicative
and precautionary and as such must not be
considered as exhaustive and/or alternative
to the information contained in the Owner’s
Manual, which you are advised to read care -
fully in all cases. Always refer to the informa -
tion in this chapter in the event of a failure
indication. All active telltales will display
first if applicable. The system check menu
may appear different based upon equipment
options and current vehicle status. Some
telltales are optional and may not appear.
Red Warning Lights
— Air Bag Warning Light
This warning light will illuminate to indicate
a fault with the air bag, and will turn on for
four to eight seconds as a bulb check when
the ignition is placed in the ON/RUN or ACC/
ON/RUN position. This light will illuminate
with a single chime when a fault with the air
bag has been detected, it will stay on until the fault is cleared. If the light is either not
on during startup, stays on, or turns on while
driving, have the system inspected at an
authorized dealer as soon as possible.
— Brake Warning Light
This warning light monitors various brake
functions, including brake fluid level and
parking brake application. If the brake light
turns on it may indicate that the parking
brake is applied, that the brake fluid level is
low, or that there is a problem with the
anti-lock brake system.
If the light remains on when the parking
brake has been disengaged, and the fluid
level is at the full mark on the master
cylinder reservoir, it indicates a possible
brake hydraulic system malfunction or that a
problem with the Brake Booster has been
detected by the Anti-Lock Brake System
(ABS) / Electronic Stability Control (ESC)
system. In this case, the light will remain on
until the condition has been corrected. If the
problem is related to the brake booster, the
ABS pump will run when applying the brake,
and a brake pedal pulsation may be felt
during each stop.
The dual brake system provides a reserve
braking capacity in the event of a failure to a
portion of the hydraulic system. A leak in
either half of the dual brake system is indi
-
cated by the Brake Warning Light, which will
turn on when the brake fluid level in the
master cylinder has dropped below a speci -
fied level.
The light will remain on until the cause is
corrected.
NOTE:
The light may flash momentarily during
sharp cornering maneuvers, which change
fluid level conditions. The vehicle should
have service performed, and the brake fluid
level checked.
If brake failure is indicated, immediate
repair is necessary.
WARNING!
Driving a vehicle with the red brake light
on is dangerous. Part of the brake system
may have failed. It will take longer to stop
the vehicle. You could have a collision.
Have the vehicle checked immediately.
2020_JEEP_JL_WRANGLER_UG_RHD_UK.book Page 65

GETTING TO KNOW YOUR INSTRUMENT PANEL
66

Vehicles equipped with the Anti-Lock Brake
System (ABS) are also equipped with Electronic
Brake Force Distribution (EBD). In the event of an
EBD failure, the Brake Warning Light will turn on
along with the ABS Light. Immediate repair to the
ABS system is required.

Operation of the Brake Warning Light can be
checked by turning the ignition switch from
the OFF position to the ON/RUN position.
The light should illuminate for approximately
four seconds. The light should then turn off
unless the parking brake is applied or a brake
fault is detected. If the light does not illumi-
nate, have the light inspected by an autho -
rized dealer.
The light also will turn on when the parking
brake is applied with the ignition switch in
the ON/RUN position.
NOTE:
This light shows only that the parking brake
is applied. It does not show the degree of
brake application.
— Battery Charge Warning Light

This warning light will illuminate when the battery
is not charging properly. If it stays on while the
engine is running, there may be a malfunction with the charging system. Contact an authorized
dealer as soon as possible.

This indicates a possible problem with the
electrical system or a related component.
— Door Open Warning Light
This indicator will illuminate when a door is
ajar/open or not fully closed.
NOTE:
If the vehicle is moving, there will also be a
single chime.
— Electric Power Steering Fault Warning
Light
This warning light will turn on when there's a
fault with the Electric Power Steering (EPS)
system. Refer to “Electric Power Steering” in
“Starting And Operating” in the Owner’s
Manual for further information.
— Electronic Throttle Control (ETC)
Warning Light
This warning light will illuminate to indicate
a problem with the Electronic Throttle
Control (ETC) system. If a problem is
detected while the vehicle is running, the
light will either stay on or flash depending on
the nature of the problem. Cycle the ignition
when the vehicle is safely and completely
stopped and the transmission is placed in
the PARK (P) position. The light should turn
off. If the light remains on with the vehicle
running, your vehicle will usually be drive -
able; however, see an authorized dealer for
service as soon as possible.
NOTE:
This light may turn on if the accelerator and
brake pedals are pressed at the same time.

If the light continues to flash when the vehicle is
running, immediate service is required and you
may experience reduced performance, an
elevated/rough idle, or engine stall and your
vehicle may require towing. The light will come on
when the ignition is placed in the ON/RUN or
ACC/ON/RUN position and remain on briefly as a
bulb check. If the light does not come on during
starting, have the system checked by an
authorized dealer.

WARNING!
Continued operation with reduced assist
could pose a safety risk to yourself and
others. Service should be obtained as soon
as possible.
2020_JEEP_JL_WRANGLER_UG_RHD_UK.book Page 66

69
The “ESC OFF Indicator Light” and the
“ESC Indicator Light” come on momen-
tarily each time the ignition is placed in
the ON/RUN or ACC/ON/RUN position.
The ESC system will make buzzing or
clicking sounds when it is active. This is
normal; the sounds will stop when ESC
becomes inactive.
This light will come on when the vehicle is
in an ESC event.
— Electronic Stability Control (ESC) OFF
Warning Light — If Equipped
This warning light indicates the Electronic
Stability Control (ESC) is off.
Each time the ignition is turned to ON/RUN
or ACC/ON/RUN, the ESC system will be on,
even if it was turned off previously.
— Loose Fuel Filler Cap Warning Light —
If Equipped
This warning light will illuminate when the
fuel filler cap is loose. Properly close the
filler cap to disengage the light. If the light
does not turn off, please see an authorized
dealer.
— Low Fuel Warning Light
When the fuel level reaches approximately
2.0 gal (7.5 L), this light will turn on and a
chime will sound. The light will remain on
until fuel is added.
— Low Washer Fluid Warning Light — If
Equipped
This warning light will illuminate when the
windshield washer fluid is low.
— Engine Check/Malfunction Indicator
Warning Light (MIL)
The Engine Check/Malfunction Indicator
Light (MIL) is a part of an Onboard Diag -
nostic System called OBD II that monitors
engine and automatic transmission control
systems. This warning light will illuminate
when the ignition is in the ON/RUN position
before engine start. If the bulb does not
come on when turning the ignition switch
from OFF to ON/RUN, have the condition
checked promptly. Certain conditions, such as a loose or
missing gas cap, poor quality fuel, etc., may
illuminate the light after engine start. The
vehicle should be serviced if the light stays
on through several typical driving styles. In
most situations, the vehicle will drive
normally and will not require towing.
When the engine is running, the MIL may
flash to alert serious conditions that could
lead to immediate loss of power or severe
catalytic converter damage. The vehicle
should be serviced by an authorized dealer
as soon as possible if this occurs. WARNING!
A malfunctioning catalytic converter, as
referenced above, can reach higher
temperatures than in normal operating
conditions. This can cause a fire if you
drive slowly or park over flammable
substances such as dry plants, wood,
cardboard, etc. This could result in death
or serious injury to the driver, occupants or
others.
2020_JEEP_JL_WRANGLER_UG_RHD_UK.book Page 69

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.
2020_JEEP_JL_WRANGLER_UG_RHD_UK.book Page 74

105
Air Bag Warning Light
The Occupant Restraint Controller
(ORC) monitors the readiness of the
electronic parts of the air bag
system whenever the ignition
switch is in the START or ON/RUN position.
If the ignition switch is in the OFF position or
in the ACC position, the air bag system is not
on and the air bags will not inflate.
The ORC contains a backup power supply
system that may deploy the air bag system
even if the battery loses power or it becomes
disconnected prior to deployment.
The ORC turns on the Air Bag Warning Light
in the instrument panel for approximately
four to eight seconds for a self-check when
the ignition switch is first in the ON/RUN
position. After the self-check, the Air Bag
Warning Light will turn off. If the ORC
detects a malfunction in any part of the
system, it turns on the Air Bag Warning
Light, either momentarily or continuously. A
single chime will sound to alert you if the
light comes on again after initial startup.
The ORC also includes diagnostics that will
illuminate the instrument panel Air Bag
Warning Light if a malfunction is detected that
could affect the air bag system. The diagnos
-
tics also record the nature of the malfunction.
While the air bag system is designed to be
maintenance free, if any of the following
occurs, have an authorized dealer service the
air bag system immediately.

The Air Bag Warning Light does not come on
during the four to eight seconds when the igni -
tion switch is first in the ON/RUN position.

The Air Bag Warning Light remains on
after the four to eight-second interval.
The Air Bag Warning Light comes on inter -
mittently or remains on while driving.
NOTE:
If the speedometer, tachometer, or any
engine related gauges are not working, the
Occupant Restraint Controller (ORC) may
also be disabled. In this condition the air
bags may not be ready to inflate for your
protection. Have an authorized dealer service
the air bag system immediately.
Redundant Air Bag Warning Light
If a fault with the Air Bag Warning
Light is detected, which could
affect the Supplemental Restraint
System (SRS), the Redundant Air
Bag Warning Light will illuminate on the
instrument panel. The Redundant Air Bag
Warning Light will stay on until the fault is
cleared. In addition, a single chime will
sound to alert you that the Redundant Air
Bag Warning Light has come on and a fault
has been detected. If the Redundant Air Bag
Warning Light comes on intermittently or
remains on while driving have an authorized
dealer service the vehicle immediately.
WARNING!
Ignoring the Air Bag Warning Light in your
instrument panel could mean you won’t
have the air bag system to protect you in a
collision. If the light does not come on as
a bulb check when the ignition is first
turned on, stays on after you start the
vehicle, or if it comes on as you drive, have
an authorized dealer service the air bag
system immediately.
2020_JEEP_JL_WRANGLER_UG_RHD_UK.book Page 105

SAFETY
136
(Continued)
Safety Checks You Should Make Inside
The Vehicle
Seat Belts

Inspect the seat belt system periodically,
checking for cuts, frays, and loose parts.
Damaged parts must be replaced immediately. Do
not disassemble or modify the system.

Front seat belt assemblies must be replaced
after a collision. Rear seat belt assemblies
must be replaced after a collision if they
have been damaged (i.e., bent retractor, torn
webbing, etc.). If there is any question
regarding seat belt or retractor condition,
replace the seat belt.
Air Bag Warning Light
The Air Bag warning light will turn on for
four to eight seconds as a bulb check when
the ignition switch is first turned to ON/RUN.
If the light is either not on during starting,
stays on, or turns on while driving, have the
system inspected at an authorized dealer as
soon as possible. This light will illuminate
with a single chime when a fault with the Air
Bag Warning Light has been detected, it will
stay on until the fault is removed. If the light
comes on intermittently or remains on while
driving, have an authorized dealer service the
vehicle immediately. Refer to “Occupant
Restraint Systems” in “Safety” for further
information.
Defroster
Check operation by selecting the defrost
mode and place the blower control on high
speed. You should be able to feel the air
directed against the windshield. See an
authorized dealer for service if your defroster
is inoperable.
Floor Mat Safety Information
Always use floor mats designed to fit your
vehicle. Only use a floor mat that does not
interfere with the operation of the pedal
assemblies. Only use a floor mat that is
securely attached using the floor mat
fasteners so it cannot slip out of position and
interfere with the pedal assemblies or impair
safe operation of your vehicle in other ways.
WARNING!

An improperly attached, damaged, folded, or
stacked floor mat, or damaged floor mat
fasteners may cause your floor mat to
interfere with the accelerator, brake, or
clutch pedals and cause a loss of vehicle
control. To prevent SERIOUS INJURY or
DEATH:

ALWAYS securely attach your floor
mat using the floor mat fasteners. DO
NOT install your floor mat upside down
or turn your floor mat over. Lightly pull to
confirm mat is secured using the floor
mat fasteners on a regular basis.
2020_JEEP_JL_WRANGLER_UG_RHD_UK.book Page 136

179
IN CASE OF EMERGENCY
HAZARD WARNING
FLASHERS
The Hazard Warning flasher switch is located
on the instrument panel below the climate
controls.Push the switch to turn on the
Hazard Warning flasher. When the
switch is activated, all directional turn signals will flash on and off to warn
oncoming traffic of an emergency. Push the
switch a second time to turn off the Hazard
Warning flashers.
This is an emergency warning system and it
should not be used when the vehicle is in
motion. Use it when your vehicle is disabled
and it is creating a safety hazard for other
motorists. When you must leave the vehicle to seek
assistance, the Hazard Warning flashers will
continue to operate even though the ignition
is placed in the OFF position.
NOTE:
With extended use the Hazard Warning
flashers may wear down your battery.
BULB REPLACEMENT
Replacement Bulbs
Interior Bulbs
Bulb Name Bulb Number
Automatic Transmission Indicator Lamp 658
Heater Control Lamps (2) 194
Rocker Switch Indicator Lamp (Rear Window Defogger, and Rear
Wash/Wipe) **
Soundbar Dome Lamp 912
** Bulbs only available from an authorized dealer.
2020_JEEP_JL_WRANGLER_UG_RHD_UK.book Page 179

IN CASE OF EMERGENCY
180Exterior Bulbs
Bulb Name Bulb Number
Headlamps (2) H4
Premium Head Lamps LED – (Serviced At Authorized Dealer)
Sport Front Park/Turn Signal Lamps (2) 7442NALL
Premium Front Park/Turn Signal Lamps (2) LED – (Serviced At Authorized Dealer)
Base (Sahara/Rubicon) Turn Lamp 7440NA
Base (Sahara/Rubicon) Park DRL Lamp 7443
Front Side Marker Lamps (2) LED – (Serviced At Authorized Dealer)
Base Fog Lamps PSX24W
Premium Fog Lamps LED – (Serviced At Authorized Dealer)
Rear Premium LED Tail Lamps LED – (Serviced At Authorized Dealer)
Rear Base Tail Lamp Stop/Tail Bulb P27/7WK
Rear Base Tail Lamp Turn Signal Bulb WY21W
Rear Base Tail Lamp Backup Bulb W16W
Rear Base Tail Lamp Side Marker LED – (Serviced At Authorized Dealer)
Center High Mounted Stop Lamp LED – (Serviced At Authorized Dealer)
License Lamp W5W
Rear Fog W21W
NOTE:
Numbers refer to commercial bulb types that can be purchased from an authorized dealer. If a bulb needs to be replaced, visit an authorized
dealer or refer to the applicable Service Manual.
2020_JEEP_JL_WRANGLER_UG_RHD_UK.book Page 180