turn signal bulb JEEP WRANGLER UNLIMITED 2020 Owner handbook (in English)

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.
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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.
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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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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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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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324
INDEX
Recreational Towing ........................... 176Shifting Into Transfer CaseNeutral (N)................................. 177
Shifting Out Of Transfer Case Neutral (N)................................. 178
Release, Hood ..................................... 55
Reminder, Seat Belt............................. 99
Remote Control Starting System ............................... 14
Remote Keyless Entry Arm The Alarm................................. 15
Disarm The Alarm ............................ 15
Remote Sound System (Radio)
Control ............................................. 279
Remote Starting System ....................... 14
Removable Doors ........................... 21 , 23
Front............................................... 21
Rear................................................ 23
Removable Top .........................47 , 51 , 53
Removal ............................................. 51
Removing............................................ 53
Replacement Bulbs ............................ 179
Replacement Keys ............................... 12
Replacement Tires ............................. 236
Restraints, Head .................................. 28
Roll Over Warning .................................. 2
Roof Type Carrier ................................. 58
Rotation, Tires ................................... 241 S
Safety Checks Inside Vehicle .............. 136
Safety Checks Outside Vehicle ............ 137
Safety Tips ....................................... 135
Safety, Exhaust Gas ........................... 135
Schedule, Maintenance...............210
, 216
Seat Belt Reminder ............................. 67
Seat Belts ....................................98 , 136
Adjustable Shoulder Belt ................ 103
Adjustable Upper Shoulder Anchorage ................................. 103
Adjustable Upper Shoulder Belt Anchorage ................................. 103
Energy Management Feature ........... 104
Front Seat ........................ 98 , 100 , 102
Inspection ..................................... 136
Lap/Shoulder Belt Operation ........... 102
Lap/Shoulder Belt Untwisting .......... 103
Lap/Shoulder Belts......................... 100
Operating Instructions .................... 102 Pregnant Women ........................... 104
Pretensioners................................. 104
Rear Seat ...................................... 100
Reminder ........................................ 99
Seat Belt Pretensioner .................... 104Seat Belt Reminder ......... 67 , 74 , 75 , 99
Untwisting Procedure ..................... 103
Seat Belts Maintenance ..................... 245 Seats ..................................................24
Adjustment ......................................24
Fold And Tumble Rear ......................27
Rear Folding ....................................24
Tilting .............................................24
Security Alarm ............................... 15 , 68
Arm The System ...............................15
Disarm The System ...........................15
Selection Of Coolant (Antifreeze) .........254
Sentry Key Replacement .......................12
Service Assistance .............................304
Shifting .............................................143 Automatic Transmission .......... 143 , 145
Transfer Case, Shifting Into Transfer Case Neutral (N).............177
Transfer Case, Shifting Out Of Transfer Case Neutral (N).............178
Shoulder Belts ...................................100
Signals, Turn ................74 , 137 , 181 , 182
Siri ...................................................300
Snow Chains (Tire Chains) ..................240
Snow Tires ........................................237
Soft Top ........................................ 47 , 53
Spare Tires ........................ 193 , 237 , 238
Spark Plugs .......................................254
Specifications Fuel (Gasoline) ...............................254
Oil ................................................254
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