brake light JEEP WRANGLER 2DOORS 2021 Owner handbook (in English)

STARTING AND OPERATING
160
Metric Speed (km/h)
Pushing the SET (+) button once will
result in a 1 km/h increase in set speed.
Each subsequent tap of the button results
in an increase of 1 km/h.
If the button is continually pushed, the set
speed will continue to increase in 10 km/
h increments until the button is released.
The increase in set speed is reflected in
the instrument cluster display.
To Decrease Speed
While ACC is set, the set speed can be
decreased by pushing the SET (-) button.
The driver's preferred units can be selected
through the instrument panel settings. Refer
to “Getting To Know Your Instrument Panel”
in the Owner’s Manual for more information.
The speed increment shown is dependent on
the chosen speed unit of U.S. (mph) or
Metric (km/h):
U.S. Speed (mph)
Pushing the SET (-) button once will result
in a 1 mph decrease in set speed. Each
subsequent tap of the button results in a
decrease of 1 mph.
If the button is continually pushed, the set
speed will continue to decrease in 5 mph
decrements until the button is released.
The decrease in set speed is reflected in
the instrument cluster display.
Metric Speed (km/h)
Pushing the SET (-) button once will result
in a 1 km/h decrease in set speed. Each
subsequent tap of the button results in a
decrease of 1 km/h.
If the button is continually pushed, the set
speed will continue to decrease in 10 km/
h decrements until the button is released.
The decrease in set speed is reflected in
the instrument cluster display.
NOTE:
When you override and push the SET (+)
button or SET (-) buttons, the new set
speed will be the current speed of the
vehicle.
When you use the SET (-) button to decel -
erate, if the engine’s braking power does
not slow the vehicle sufficiently to reach
the set speed, the brake system will auto-
matically slow the vehicle.
The ACC system applies the brake down to
a full stop when following a target vehicle.
If an ACC host vehicle follows a target
vehicle to a standstill, the host vehicle will
release the vehicle brakes two seconds
after coming to a full stop.
The ACC system maintains set speed when
driving uphill and downhill. However, a
slight speed change on moderate hills is
normal. In addition, downshifting may
occur while climbing uphill or descending
downhill. This is normal operation and
necessary to maintain set speed. When
driving uphill and downhill, the ACC
system will cancel if the braking tempera-
ture exceeds normal range (overheated).
Setting The Following Distance In ACC
The specified following distance for ACC can
be set by varying the distance setting
between four bars (longest), three bars
(long), two bars (medium) and one bar
(short). Using this distance setting and the
vehicle speed, ACC calculates and sets the
distance to the vehicle ahead. This distance
setting displays in the instrument cluster
display.
2020_JEEP_JL_WRANGLER_UG_RHD_UK.book Page 160

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

211
Once A Month Or Before A Long Trip
Check the engine oil level about five
minutes after a fully warmed engine is
shut off. Checking the oil level while the
vehicle is on level ground will improve the
accuracy of the oil level reading. Add oil
only when the level is at or below the ADD
or MIN mark.
Check the windshield washer solvent and
add if required.
Check tire pressure and look for unusual
wear or damage. Rotate tires at the first
sign of irregular wear.
Inspect the battery and clean and tighten
the terminals as required.
Check the fluid levels of coolant reservoir,
brake master cylinder and power steering
and fill as needed.
Check all lights and other electrical items
for correct operation.At Each Oil Change
Change the engine oil filter.
Inspect the brake hoses and lines.
Inspect the CV/Universal joints.
Check tire pressure and look for unusual
wear or damage. Rotate tires at the first
sign of irregular wear, even if it occurs
before the oil indicator system turns on.
Required Maintenance Intervals
Refer to the Maintenance Plan on the
following pages for the required maintenance
intervals.
Maintenance Plan
NOTE:
Once you have carried out the last interven -
tion in the table, continue with the sched -
uled servicing, maintaining the frequency
indicated in the plan by marking each oper -
ation with a dot or dedicated note. Simply
restarting the maintenance from the start of
the plan may cause the allowed interval to be
exceeded for some operations.
CAUTION!
Failure to perform the required
maintenance items may result in damage
to the vehicle.
2020_JEEP_JL_WRANGLER_UG_RHD_UK.book Page 211

217
Once A Month Or Before A Long Trip
Check engine oil level.
Check windshield washer fluid level.
Check tire pressure and look for unusual
wear or damage. Rotate tires at the first
sign of irregular wear, even if it occurs
before the oil indicator system turns on.

Check the fluid levels of the coolant reservoir
and brake master cylinder, fill as needed.

Check function of all interior and exterior lights.Demanding Vehicle Use
Restore additive level for AdBlue® Diesel
emissions (UREA) (if equipped), when the
lamp is illuminated or the message on the
instrument panel.
Maintenance Plan — Diesel Engine
Required Maintenance Intervals
Refer to the maintenance plan on the
following pages for the required maintenance
intervals.
NOTE:
Once you have carried out the last intervention in the table, continue with the scheduled servicing, maintaining the frequency indicated in
the plan by marking each operation with a dot or dedicated note. Simply restarting the maintenance from the start of the plan may cause the
allowed interval to be exceeded for some operations.
CAUTION!

Failure to perform the required maintenance
items may result in damage to the vehicle.

At Every Oil Change Interval As Indicated By Oil Change Indicator System:
Change oil and filter
Rotate the tires. Rotate at the first sign of irregular wear, even if it occurs before the oil indicator system turns on
Inspect battery and clean and tighten terminals as required
Inspect the CV/Universal joints
Inspect brake pads, shoes, rotors, drums, hoses and park brake
Inspect engine cooling system protection and hoses
Inspect exhaust system
Inspect engine air cleaner if using in dusty or off-road conditions
Inspect all door latches for presence of grease, reapply if necessary.
Inspect coolant level.
2020_JEEP_JL_WRANGLER_UG_RHD_UK.book Page 217

SERVICING AND MAINTENANCE
220
(*) 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.
(**) The brake fluid interval is time based
only, mileage intervals do not apply.(***) The maximum mileage is 75,000 mi
(120,000 km). The belt must be replaced
every 5 years regardless of distance traveled.
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.
(°) Consumption of additive AdBlue®
(UREA) depends on the condition of use of
the vehicle and is indicated by LED and/or
message on the instrument panel. 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 220

SERVICING AND MAINTENANCE
230(Continued)
Coolant Checks
Check the engine and, intercooler (if
equipped) coolant (antifreeze) protection
every 12 months (before the onset of
freezing weather, where applicable). If the
engine and, intercooler (if equipped) is dirty
or rusty in appearance, the system should be
drained, flushed and refilled with fresh OAT
coolant (conforming to MS.90032) by an
authorized dealer. Check the front of the A/C
condenser (if equipped) or radiator for any
accumulation of bugs, leaves, etc. If dirty,
clean by gently spraying water from a garden
hose vertically down the face of the A/C
condenser (if equipped) or the back of the
radiator core.Check the engine and, intercooler (if
equipped) cooling system hoses for brittle
rubber, cracking, tears, cuts, and tightness
of the connection at the coolant recovery
bottle and radiator. Inspect the entire system
for leaks. DO NOT REMOVE THE COOLANT
PRESSURE CAP WHEN THE COOLING
SYSTEM IS HOT.
Brake System
In order to ensure brake system perfor
-
mance, all brake system components should
be inspected periodically. Refer to the
“Maintenance Plan” in this section for the
proper maintenance intervals.
Fluid Level Check — Brake Master Cylinder
The fluid level of the master cylinder should
be checked whenever the vehicle is serviced,
or immediately if the brake system warning
light is on. If necessary, add fluid to bring
level within the designated marks on the side
of the reservoir of the brake master cylinder.
Be sure to clean the top of the master
cylinder area before removing cap. With disc
brakes, fluid level can be expected to fall as
the brake pads wear. Brake fluid level should
be checked when pads are replaced. If the
brake fluid is abnormally low, check the
system for leaks.
Refer to “Fluids And Lubricants” in “Tech -
nical Specifications” for further information.When working near the radiator cooling
fan, turn the ignition to the OFF mode.
The fan is temperature controlled and
can start at any time the ignition is in the
ON mode.
WARNING! (Continued)
WARNING!
Riding the brakes can lead to brake failure
and possibly a collision. Driving with your
foot resting or riding on the brake pedal
can result in abnormally high brake
temperatures, excessive lining wear, and
possible brake damage. You would not
have your full braking capacity in an
emergency. WARNING!
Use only manufacturer's recommended
brake fluid. Refer to “Fluids And Lubri -
cants” in “Technical Specifications” for
further information. Using the wrong
type of brake fluid can severely damage
your brake system and/or impair its
performance. The proper type of brake
fluid for your vehicle is also identified on
the original factory installed hydraulic
master cylinder reservoir.
2020_JEEP_JL_WRANGLER_UG_RHD_UK.book Page 230

259
Off Road & Performance:
• Bumpers• Performance Brakes• Rock Rails
• Winches • Axle Locker Kit• Grille Guard
• Performance Axles • Differential Covers• Spare Tire Carrier
• Performance Hoods • LED Off Road Lights• Fender Flares
• Lift Kits • Skid Plates• Tailgate Reinforcement
Exterior:
• Wheels • Hood Lock• Front End Cover
• Spare Tire Covers • Wheel Locks• Parking Cover
• Fuel Doors • Trailer Hitches• LED Lights
• Air Deflectors • Body Graphics• Valve Stem Caps
• Locking Gas Cap • Hood Graphics• Ski And Snowboard Carriers
• Tubular Steps • Satin Black Grille• Roof Basket
• Molded Side Steps • Camping Tent• Roof Basket Net
• Windshield Tie Down Strap • Hood Cover• Towing Kit
• Splash Guards
Interior:
• Hard Top Headliner • Door Sill Guards• Trailrail Cargo Rail
• Premium Carpet Floor Mats • Storage Bags• Trailrail Vertical Cargo Divider
• All Weather Floor Mats • Cargo Tub• Tailgate Table
• Radio Screen Protector • Cargo Tray• Dog Kennel
• Grab Handles • Cargo Net• Dog Partition
Electronics:
• Electronic Vehicle Tracking System
2020_JEEP_JL_WRANGLER_UG_RHD_UK.book Page 259

319
INDEX
A
Accessories ....................................... 258Mopar ........................................... 258
Active Speed Limiter .......................... 156
Adaptive Cruise Control (ACC)
(Cruise Control) ................................. 158
Adding Fuel ...................................... 169
Additives, Fuel .................................. 249
Air Bag Air Bag Operation ........................... 107Air Bag Warning Light ..................... 105
Disable, Passenger Air Bag.............. 107

Enhanced Accident Response ... 115 , 209

Event Data Recorder (EDR) ............. 209
Front Air Bag ................................. 106
If Deployment Occurs ..................... 114
Knee Impact Bolsters ..................... 112
Maintaining Your Air Bag System ..... 116
Maintenance .................................. 116
Redundant Air Bag Warning Light .... 105
Transporting Pets ........................... 134
Air Bag Light ........................65 , 105 , 136
Air Conditioning................................... 44
Air Conditioning Filter .......................... 46
Air Conditioning System ....................... 44
Air Conditioning, Operating Tips ............ 45 Air Pressure
Tires ............................................. 233
Alarm Arm The System .............................. 15
Disarm The System .......................... 15
Security Alarm ............................15 , 68
Alarm (Security Alarm) ......................... 16
Alterations/Modifications Vehicle ............................................. 2
Android Auto...................... 266 , 271 , 302
Apps ............................................. 274
Communication ............................. 273
Maps ............................................ 272
Music ........................................... 273
Antifreeze (Engine Coolant) ................ 253
Anti-Lock Brake System (ABS) .............. 78
Anti-Lock Warning Light ....................... 68
Apple CarPlay .................... 267 , 274 , 303
Apps ............................................. 276
Maps ............................................ 276
Messages ...................................... 275
Music ........................................... 275
Phone ........................................... 275
Assist, Hill Start .................................. 85
Audio Systems (Radio) ................260 , 262
Auto Down Power Windows ................... 46
Automatic Headlights .......................... 33 Automatic High Beams .........................33
Automatic Temperature Control (ATC) ....44
Automatic Transmission......................145
Fluid Level Check ................... 231 , 232
Fluid Type ............................. 231 , 257
Special Additives ............................231

Auxiliary Electrical Outlet (Power Outlet)... 56

Auxiliary Power Outlet ..........................56
Auxiliary Switches ................................58
Axle Fluid..........................................257
Axle Lock ..........................................151
B
Battery ........................................ 66 , 225
Charging System Light ......................66
Belts, Seat ........................................136
Blind Spot Monitoring ..........................87
Brake Assist System .............................79
Brake Control System ...........................79
Brake Fluid ............................... 230 , 257
Brake System ....................................230 Fluid Check ...................................230
Master Cylinder ..............................230
Warning Light...................................65
Brake/Transmission Interlock...............144
Bulb Replacement ..................... 179 , 181
Bulbs, Light .............................. 137 , 179
2020_JEEP_JL_WRANGLER_UG_RHD_UK.book Page 319

320
INDEX
C
Camera, Rear .................................... 167
Capacities, Fluid................................ 253
Caps, FillerFuel ...................................... 169 , 170
Oil (Engine) ................................... 221
Car Washes ....................................... 243
Carbon Monoxide Warning .................. 135
Center High Mounted Stop Light ......... 183
Certification Label ............................. 174
Chains, Tire ...................................... 240
Change Oil Indicator ............................ 61
Changing A Flat Tire .......................... 232
Checking Your Vehicle For Safety ........ 135
Checks, Safety .................................. 135
Cleaning Wheels .......................................... 239
Climate Control Automatic........................................ 37
Clock Settings ................................... 261
Compact Spare Tire ........................... 238
Connector UCI ............................................... 280
Universal Consumer Interface (UCI) ........................... 280
Cooling System .................................. 229 Cooling Capacity ............................ 253Inspection ..................................... 230
Selection Of Coolant (Antifreeze) ........................ 253 , 254 Cruise Control (Speed Control) ............ 158
Cruise Light ...................................74
, 76
Customer Assistance .......................... 304
Cybersecurity .................................... 260
D
Daytime Running Lights ....................... 32
Dealer Service ................................... 226
Defroster, Windshield......................... 136
Delay (Intermittent) Wipers .................. 35
Diagnostic System, Onboard ................. 77
Diesel Display Messages ............................. 62
Dimmer Switch Headlight ........................................ 32
Dipsticks Oil (Engine) ................................... 224
Disabled Vehicle Towing .................... 207
Do Not Disturb ...........................292 , 301
Door Ajar .......................................66 , 68
Door Ajar Light ...............................66 , 68
Doors ................................................. 18 Removal.....................................21 , 23
Removal, Front ................................ 21
Removal, Rear ................................. 23
Drag And Drop Menu ..................264 , 269
Driver’s Seat Back Tilt ......................... 24
Dual Top .......................................47 , 53 E
Electric Brake Control System ...............79
Anti-Lock Brake System ....................78
Electronic Roll Mitigation ............ 80 , 87

Electrical Outlet, Auxiliary (Power Outlet) .. 56

Electrical Power Outlets ........................56
Electronic Speed Control
(Cruise Control) ..................................157
Electronic Stability Control (ESC) ..........80
Electronic Throttle Control Warning
Light ...................................................66
Emergency, In Case Of Jacking .................................. 192 , 232
Jump Starting ................................201
Emissions..........................................258
Engine ..............................................221 Break-In Recommendations .............143Compartment ................. 221 , 222 , 223
Compartment Identification .............. 221 , 222 , 223
Coolant (Antifreeze) ........................254
Cooling ..........................................229 Exhaust Gas Caution .......................135
Fuel Requirements ................. 248 , 253
Jump Starting ................................201
Oil ........................................ 253 , 254
Oil Filler Cap ..................................221
Oil Selection ..................................253
Overheating....................................204
Starting .........................................138
2020_JEEP_JL_WRANGLER_UG_RHD_UK.book Page 320

321
Enhanced Accident Response
Feature ..................................... 115, 209
Exhaust Gas Caution .......................... 135
Exhaust System ......................... 135 , 228
Exterior Lights ............................. 32 , 137
F
Fabric Care ....................................... 244
Fabric Top ........................................ 244
Filters Air Conditioning ............................... 46
Engine Oil ..................................... 254
Flashers Hazard Warning ............................. 179Turn Signal.................................... 137
Turn Signals .....................74 , 181 , 182
Flash-To-Pass ...................................... 33
Flat Tire Changing ..................... 232 , 237
Flat Tire Stowage ....................... 232 , 237
Fluid Capacities................................. 253
Fluid Leaks ....................................... 137
Fluid Level Checks Brake ............................................ 230
Engine Oil ..................................... 224
Fluid, Brake ...................................... 257
Fluids And Lubricants ........................ 254
Fog Lights ..............................33 , 72 , 182
Fog Lights, Rear .................................. 33 Fog Lights, Service ............................ 182
Fold And Tumble Rear Seat .................. 27
Fold-Flat Seats .................................... 24
Folding Rear Seats .............................. 26
Forward Collision Warning .................... 89
Four Wheel Drive ............................... 146
Operation ...................................... 146
Shifting......................................... 146
System ......................................... 146
Four Wheel Drive Operation ................ 148
Four-Way Hazard Flasher.................... 179
Freedom Panels .................................. 51
Freeing A Stuck Vehicle ..................... 206
Fuel ................................................. 248 Adding .......................................... 169
Additives ....................................... 249
Consumption ................................. 258
Filler Cap (Gas Cap) ................169 , 170
Gasoline........................................ 248
Materials Added............................. 249
Octane Rating.........................248 , 254
Requirements ................................ 253
Specifications................................ 254
Tank Capacity................................ 253
Fueling ............................................. 169
Fuses ............................................... 183 G
Gas Cap (Fuel Filler Cap) ............ 169
, 170
Gasoline Particulate Filter (GPF)............59
Gasoline, (Fuel) .................................248
Glass Cleaning ...................................246
GVWR ...............................................174
H
Hard Top .............................................51
Hazard Warning Flashers ....................179
Head Restraints ...................................28
Headlights Automatic ........................................33
Bulb Replacement ..........................181
Cleaning ........................................242
High Beam/Low Beam Select Switch .........................................32
Leveling...........................................34 Lights On Reminder ..........................34
Passing............................................33Replacing ......................................181
Heated Steering Wheel .........................31
High Beam/Low Beam Select
(Dimmer) Switch ..................................32
Hill Descent Control .............................83
Hill Descent Control Indicator ...............83
Hill Start Assist....................................85
Hood Prop ...........................................55
Hood Release ......................................55
2020_JEEP_JL_WRANGLER_UG_RHD_UK.book Page 321