2020 JEEP WRANGLER UNLIMITED bulb

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.
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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.
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181
Bulb Replacement
NOTE:
Lens fogging can occur under certain atmo-
spheric conditions. This will usually clear as
atmospheric conditions change to allow the
condensation to change back into a vapor.
Turning the lamps on will usually accelerate
the clearing process.
Halogen Headlamps
NOTE:
We advise referring to an authorized dealer
for service.
1. Open hood and support using prop rod.
2. Remove the front grille. Turn the retainers along the top a quarter turn
counterclockwise and remove.
3. Pull the bottom of the grille away starting at one side and working toward the other.
4. Remove the three screws holding the headlamp to the vehicle.
5. Remove lamp from the vehicle.
6. Remove the lamp from the collar. 7. Grasp the bulb and turn a quarter turn
counterclockwise.
8. Pull the bulb from the housing.
9. Push connector locking tab to the unlock position.
10. Remove connector from bulb.
11. Push connector onto new bulb base, and push the connector locking tab to the
lock position.
12. Reinstall bulb housing. Rotate the bulb a quarter turn clockwise.
Front Park/Turn Signal
NOTE:
We advise referring to an authorized dealer
for service.
1. Remove the front wheel liner fasteners toaccess bulb sockets.
Wheel Liner
2. Turn the socket assembly a quarter turn counterclockwise and remove from
housing. Pull the bulb straight from the
socket to replace.
LED Front Side Marker
Please see an authorized dealer for service.
CAUTION!
Do not touch the new bulb with your
fingers. Oil contamination will severely
shorten bulb life. If the bulb comes in
contact with any oily surface, clean the
bulb with rubbing alcohol.
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IN CASE OF EMERGENCY
182
Halogen Front Fog Lamp
NOTE:
We advise referring to an authorized dealer
for service.
1. Reach under the vehicle to access theback of the front fog lamp.
2. Disconnect the wire harness connector from the front fog lamp connector recep -
tacle.
3. Firmly grasp the bulb by the two latch features and squeeze them together to
unlock the bulb from the back of the
front fog lamp housing.
4. Pull the bulb straight out from the keyed opening in the housing and then connect
the replacement bulb. LED Front Fog Lamp
Please see an authorized dealer for service.
Rear Tail, Stop, Turn Signal, And Backup
Lamp
1. Remove interior trim panel cap to access
single retaining screw for tail lamp
assembly.
Trim Cap
2. Remove retaining screw and disconnect electrical connector, then remove tail
lamp assembly from the vehicle.
NOTE:
If necessary, push in on the assembly tab
located inboard behind the lamp housing. Retaining Screw
3. Remove the three screws from assembly bracket to access bulb sockets.
Assembly Bracket
4. Rotate the appropriate socket a quarter turn counterclockwise, then remove it
from the housing.

5. Pull the bulb straight from the socket to replace.

CAUTION!
Do not touch the new bulb with your
fingers. Oil contamination will severely
shorten bulb life. If the bulb comes in
contact with any oily surface, clean the
bulb with rubbing alcohol.
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183
(Continued)
Center High Mounted Stop Lamp (CHMSL)
Please see an authorized dealer for service.
License Plate Lamps
1. Reach under the vehicle to access theback of the lamp.
2. Firmly grasp the bulb by the two latch features and squeeze them together to
unlock the bulb from the back of the
lamp housing.
Rear Fog Lamp
NOTE:
We advise referring to an authorized dealer
for service.
1. Reach under the vehicle to access theback of the fog lamp.
2. Disconnect the wire harness connector from the fog lamp connector receptacle.
3. Rotate the socket a quarter turn counter -
clockwise, then remove it from the
housing.
4. Pull the bulb straight out from the keyed opening in the housing and then connect
the replacement bulb and reassemble.
FUSES
General Information
The fuses protect electrical systems against
excessive current.
When a device does not work, you must
check the fuse element inside the blade fuse
for a break/melt.
Also, please be aware that when using power
outlets for extended periods of time with the
engine off may result in vehicle battery
discharge.
CAUTION!
Do not touch the new bulb with your
fingers. Oil contamination will severely
shorten bulb life. If the bulb comes in
contact with any oily surface, clean the
bulb with rubbing alcohol.
WARNING!
When replacing a blown fuse, always use
an appropriate replacement fuse with
the same amp rating as the original fuse.
Never replace a fuse with another fuse of
higher amp rating. Never replace a blown
fuse with metal wires or any other mate-
rial. Failure to use proper fuses may
result in serious personal injury, fire and/
or property damage.
Before replacing a fuse, make sure that
the ignition is off and that all the other
services are switched off and/or disen -
gaged.
If the replaced fuse blows again, contact
an authorized dealer.
If a general protection fuse for safety
systems (air bag system, braking
system), power unit systems (engine
system, gearbox system) or steering
system blows, contact an authorized
dealer.
CAUTION!
If it is necessary to wash the engine
compartment, take care not to directly hit
the fuse box, and the windshield wiper
motors with water.
WARNING! (Continued)
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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
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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
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322
INDEX
I
Ignition ............................................... 12Switch ............................................ 12
Installation.......................................... 51
Installing ............................................ 53
Instrument Cluster ............................... 61 Descriptions .................................... 74
Display ............................................ 60
Menu Items ..................................... 61
Instrument Panel Lens Cleaning .......... 246
Integrated Power Module (Fuses)......... 184
Interior Appearance Care .................... 245
Intermittent Wipers (Delay Wipers) ........ 35
Introduction .......................................... 1
Inverter Power.............................................. 57
J
Jack Location .................................... 193
Jack Operation .......................... 195 , 232
Jacking Instructions ........................... 195
Jump Starting ................................... 201 K
Key Fob
Arm The System .............................. 15
Disarm The System .......................... 15
Keyless Enter-N-Go.............................. 18 Passive Entry ................................... 18
Keys................................................... 11 Replacement ................................... 12
L
Lap/Shoulder Belts ............................ 100
Latches ............................................ 137 Hood .............................................. 55
Leaks, Fluid ...................................... 137
Leveling Headlights....................................... 34
Life Of Tires...................................... 235
Light Bulbs ................................137 , 179
Lights............................................... 137 Air Bag ............................ 65 , 105 , 136
Automatic Headlights ....................... 33
Brake Assist Warning........................ 82
Brake Warning ................................. 65
Bulb Replacement ..................179 , 181
Center Mounted Stop ..................... 183 Cruise ........................................74 , 76 Daytime Running ..............................32
Dimmer Switch, Headlight.................32
Electronic Stability Program (ESP)
Indicator ......................................67
Engine Temperature Warning .............67 Exterior.................................... 32 , 137
Fog ......................................... 72 , 182
Hazard Warning Flasher ..................179
Headlight Leveling ............................34
Headlights .....................................181
High Beam.......................................32
High Beam/Low Beam Select .............32 Hill Descent Control Indicator ............83Lights On Reminder ..........................34
Malfunction Indicator (Check Engine) .............................69
Park ................................................74
Passing............................................33 Rear Servicing ................................182
Rear Tail Lamps .............................182
Seat Belt Reminder .............. 67 , 74 , 75
Security Alarm .................................68
Service .................................. 179 , 181
Side Marker ...................................182
Tire Pressure Monitoring (TPMS) ........92
Traction Control................................82
Turn Signal ....................................137
Turn Signals..................... 74 , 181 , 182
Warning Instrument Cluster Descriptions ........................... 67 , 74
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