2021 JEEP WRANGLER UNLIMITED engine

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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IN CASE OF EMERGENCY
184
Power Distribution Center (PDC)
The Power Distribution Center (PDC) is
located in the engine compartment near the
battery. This center contains cartridge fuses,
mini fuses, and relays. The PDC top cover is
labeled with each serviceable fuse/relay loca-
tion, function, and size. NOTE:
Fuses for safety systems (marked with *)
must be serviced by an authorized dealer.
Power Distribution Center
CavityCartridge Fuse Micro Fuse Description
F01– –Spare
F02 40 Amp Green –Starter
(*)
F03 –5 Amp Tan Intelligent Battery Sensor (IBS)
(*)
F04 –20 Amp Yellow Fuel Pump MTR/FPCM
(*)
F05 –5 Amp Tan Security Gateway

(*)
F06 – –Spare
F07 –15 Amp Blue Low Temp Radiator Cooling Pump (LTR) — If Equipped
(*)
F08 –15 Amp Blue Trans Control Module TCM-8HP CYGNUS
(*)
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185
F09– –Spare
F10 –15 Amp Blue Key Ignition Node (KIN)/Radio Frequency Hub (RF HUB)/
Electric Steering Column Lock (ESCL)
(*)
F11 –10 Amp Red UCI Port (USB & AUX)
F12 –25 Amp Clear HIFI Amplifier
F13 – –Spare
F14 – –Spare
F15 –15 Amp Blue Instrument Panel Cluster (IPC)/Switch Bank-Heavy Duty
Electrical Pkg (SWITCH BANK-HD ELEC)
(*)
F16 – –
Spare
F17 – –Spare
F18 –10 Amp Red Air Conditioning Clutch (AC CLUTCH)
(*)
F19 – –Spare
F20 30 Amp Pink –Central Body Controller (CBC) 1-INTERIOR LIGHTS
F21 –20 Amp Yellow REAR WIPER
F22 –10 Amp Red Engine Control Module (ECM)/Powertrain Control Module
(PCM)/Motor Generator Unit (MGU) WAKE UP/Power Pack
Unit (PPU) WAKE UP
(*)
F23 –10 Amp Red Powertrain Control Module (PCM)/Engine Control Module
(ECM)
(*)
CavityCartridge Fuse Micro Fuse Description
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187
F38 20 Amp Blue
–Engine Control Module ECM
(*)
F39 – –Spare
F40 –15 Amp Blue DriveTrain Control Module (DTCM)/Axle Lock (AXLE LOC)
FT_RR
(*)
F41 –15 Amp Blue Instrument Cluster (IC)/Security GateWay (SGW) WAKE UP
(*)
F42 –10 Amp Red Power Control Relay Control Feed (Electric Stop/Start)/Spare
(Belt Starter Generator) -- If Equipped
(*)
F43 –20 Amp Yellow PWR OUTLET (CARGO) BATT
(*)
F44 –10 Amp Red InfraRed Camera (IRCAM) HEATERS
(*)
F45 –20 Amp Yellow PWR OUTLET (CARGO) IGN*
(*)
F46 –10 Amp Red AUTO HDLP LVL MOD/LVL MTR/HDLP SW
(*)
F47 – –Spare
F48 – –Spare
F49 –10 Amp Red Occupant Restraint Controller ORC
(*)
F50 –10 Amp Red HD ACC — If Equipped
(*)
CavityCartridge Fuse Micro Fuse Description
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IN CASE OF EMERGENCY
192
(Continued)
JACKING AND TIRE
CHANGING
F109–20 Amp Yellow TRAILER TOW STOP/TURN RT — If Equipped
F110 30 Amp Pink –POWER INVERTER
(*)
F111 20 Amp Blue –TRAILER TOW BACKUP — If Equipped
Cavity Cartridge Fuse Micro Fuse Description
CAUTION!
When installing the power distribution
center cover, it is important to ensure
the cover is properly positioned and fully
latched. Failure to do so may allow water
to get into the power distribution center
and possibly result in an electrical
system failure.
When replacing a blown fuse, it is
important to use only a fuse having the
correct amperage rating. The use of a
fuse with a rating other than indicated
may result in a dangerous electrical
system overload. If a properly rated fuse
continues to blow, it indicates a problem
in the circuit that must be corrected.
WARNING!
Do not attempt to change a tire on the
side of the vehicle close to moving
traffic. Pull far enough off the road to
avoid the danger of being hit when oper-
ating the jack or changing the wheel.
Being under a jacked-up vehicle is
dangerous. The vehicle could slip off the
jack and fall on you. You could be
crushed. Never put any part of your body
under a vehicle that is on a jack. If you
need to get under a raised vehicle, take
it to a service center where it can be
raised on a lift.
Never start or run the engine while the
vehicle is on a jack.
The jack is designed to be used as a tool
for changing tires only. The jack should
not be used to lift the vehicle for service
purposes. The vehicle should be jacked
on a firm level surface only. Avoid ice or
slippery areas.
WARNING! (Continued)
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195
(Continued)
Jacking Instructions
Jack Warning Label1. Remove the spare tire, jack and tools
from the stored location.
2. Loosen (but do not remove) the wheel lug nuts by turning them to the left one turn
while the wheel is still on the ground.
3. Assemble the jack and jacking tools. Connect the jack handle driver to the
extension, then to the lug wrench.
Assembled Jack And Tools
WARNING!
Carefully follow these tire changing
warnings to help prevent personal injury or
damage to your vehicle:
Always park on a firm, level surface as
far from the edge of the roadway as
possible before raising the vehicle.
Turn on the Hazard Warning flashers.
Block the wheel diagonally opposite the
wheel to be raised.
Apply the parking brake firmly and shift
an automatic transmission to PARK.
Never start or run the engine with the
vehicle on a jack.
Do not let anyone sit in the vehicle when
it is on a jack.
Do not get under the vehicle when it is
on a jack. If you need to get under a
raised vehicle, take it to a service center
where it can be raised on a lift.
Only use the jack in the positions indi -
cated and for lifting this vehicle during a
tire change.
If working on or near a roadway, be
extremely careful of motor traffic.
To assure that spare tires, flat or
inflated, are securely stowed, spares
must be stowed with the valve stem
facing the ground.
WARNING! (Continued) CAUTION!
Do not attempt to raise the vehicle by
jacking on locations other than those
indicated.
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IN CASE OF EMERGENCY
200
Jack Usage Precautions
To complete the Use and Maintenance
Handbook to which this supplement is
attached, given below are some instructions
on the proper use of the jack.MaintenanceMake sure grime does not build up on the
“worm screw.”
Keep the “worm screw” lubricated.
Never modify the jack.
Conditions Of Non-Use:
Temperatures below −40°C.
On sandy or muddy ground.
On uneven ground.
On steep roads.
In extreme weather conditions: thunder -
storms, typhoons, hurricanes, blizzards,
storms, etc.
NOTE:
The jack requires no adjustment.
The jack cannot be repaired, and in the
event of a fault, it must be replaced by
another genuine one.
No tool other than its cranking device may
be fitted on the jack.
WARNING!
When using the crank, make sure it turns
freely without the risk of scraping hands
against the ground.
Even the moving parts of the jack, the
“worm screw” and joints can cause
injuries: avoid contact with them. Clean it
thoroughly if dirtied with grease.
CAUTION!
The jack is a tool designed exclusively for
changing a wheel, in case of a puncture or
damage to a tire of the vehicle on which it
is fitted or on vehicles of the same model.
Any other use, e.g. to jack up other vehicle
models or different things, is strictly
prohibited. Never use it to carry out
maintenance or repairs under the vehicle
or to change summer/winter wheels and
vice versa. Never go under the raised
vehicle. If any work under the vehicle is
necessary, contact an authorized dealer.
Incorrect placing of the jack can cause the
vehicle to drop: use it only in the positions
indicated. Do not use the jack for loads
higher than that specified on the label.
Never start the engine with vehicle raised.
If the vehicle is raised more than
necessary, everything can become more
unstable, with the risk of the vehicle
dropping violently. Therefore raise the
vehicle only as much as necessary for the
wheel/spare.
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201
JUMP STARTING
If your vehicle has a discharged battery, it
can be jump started using a set of jumper
cables and a battery in another vehicle, or by
using a portable battery booster pack. Jump
starting can be dangerous if done improp-
erly, so please follow the procedures in this
section carefully.
NOTE:
When using a portable battery booster pack,
follow the manufacturer's operating instruc -
tions and precautions.
Preparations For Jump Start
The battery in your vehicle is located in the
left rear of the engine compartment.
Positive Battery Post
Positive Battery Post NOTE:
The positive battery post is covered with a
protective cap. Lift up on the cap to gain
access to the post.
WARNING!
Do not attempt jump starting if the battery
is frozen. It could rupture or explode and
cause personal injury.
CAUTION!
Do not use a portable battery booster pack
or any other booster source with a system
voltage greater than 12 Volts or damage to
the battery, starter motor, alternator or
electrical system may occur.
WARNING!
Take care to avoid the radiator cooling
fan whenever the hood is raised. It can
start anytime the ignition switch is ON.
You can be injured by moving fan blades.
Remove any metal jewelry such as rings,
watch bands and bracelets that could
make an inadvertent electrical contact.
You could be seriously injured.
Batteries contain sulfuric acid that can
burn your skin or eyes and generate
hydrogen gas which is flammable and
explosive. Keep open flames or sparks
away from the battery.
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