Jeep Wrangler JK (2018 year). Manual

Totally Integrated Power Module

The Totally Integrated Power Module is located in the
engine compartment near the battery. This center contains
cartridge fuses, mini fuses, and relays. A label that identi-
fies each component is printed on the inside of the cover.

Cavity

Cartridge Fuse

Mini Fuse

Description

–

30 Amp Pink

–

Transfer Case Module

–

25 Amp Clear

–

Driver Door Node

25 Amp Clear

–

Passenger Door Node

40 Amp Green

–

Anti-Lock Brake System (ABS) Pump/

Stability Control System

30 Amp Pink

–

Anti-Lock Brake System (ABS) Valve/

Stability Control System

–

Totally Integrated Power Module

IN CASE OF EMERGENCY

339

Cavity

Cartridge Fuse

Mini Fuse

Description

40 Amp Green

–

PZEV Sec Motor/Flex Fuel – If Equipped

J10

30 Amp Pink

–

Headlamp Wash Relay/Manifold Tuning

Valve

J11

30 Amp Pink

–

Sway Bar

J12

–

J13

60 Amp Yellow

–

Ignition Off Draw (IOD) – Main

J14

40 Amp Green

–

Rear Defroster

J15

40 Amp Green

–

Front Blower

J17

40 Amp Green

–

Starter Solenoid

J18

20 Amp Blue

–

Powertrain Control Module (PCM) Trans

Range

J19

60 Amp Yellow

–

Radiator Fan

J20

30 Amp Pink

–

Front Wiper LO/HI

J21

20 Amp Blue

–

Front/Rear Washer

J22

–

Spare

–

15 Amp Blue

Center High-Mounted Stop Light (CHMSL)/

Switch Stop Lamp Feed

–

20 Amp Yellow

Relay Trailer Lighting (Stop lamp)

–

20 Amp Yellow

Front/Rear Axle Locker Relay

–

2 Amp Grey

Clock Spring

340

IN CASE OF EMERGENCY

Cavity

Cartridge Fuse

Mini Fuse

Description

–

25 Amp Clear

Power Inverter – If Equipped

–

20 Amp Yellow

Power Outlet #1/Rain Sensor

–

20 Amp Yellow

Power Outlet #2 (BATT/ACC SELECT)

–

20 Amp Yellow

Front Heated Seat

–

20 Amp Yellow

Rear Heated Seat – If Equipped

M10

–

15 Amp Blue

Ignition Off Draw – Vehicle Entertainment

System, Satellite Digital Audio Receiver

(SDARS), DVD, Hands-Free Module, RA-

DIO, Antenna, Universal Garage Door

Opener, Vanity Lamp

M11

–

10 Amp Red

(Ignition Off Draw) Climate Control System,

Underhood Lamp

M12

–

30 Amp Green

Amplifier

M13

–

20 Amp Yellow

Ignition Off Draw – Cabin Compartment

Node, Wireless Control Module, SIREN,

Multifunction Control Switch

M14

–

20 Amp Yellow

Trailer Tow (Export Only)

IN CASE OF EMERGENCY

341

Cavity

Cartridge Fuse

Mini Fuse

Description

M15

–

20 Amp Yellow

Climate Control System, Rear View Mirror,

Cabin Compartment Node, Transfer Case

Switch, Multi-Function Control Switch, Tire

Pressure Monitor, Glow Plug Module – Ex-

port Diesel Only

M16

–

10 Amp Red

Airbag Module

M17

–

15 Amp Blue

Left Tail/License/Park Lamp

M18

–

15 Amp Blue

Right Tail/Park/Run Lamp

M19

–

25 Amp Clear

Auto Shut Down (ASD #1 and #2)

M20

–

15 Amp Blue

Cabin Compartment Node Interior Light,

Switch Bank

M21

–

20 Amp Yellow

Auto Shut Down (ASD #3)

M22

–

10 Amp Red

Right Horn (HI/LOW)

M23

–

10 Amp Red

Left Horn (HI/LOW)

M24

–

25 Amp Clear

Rear Wiper

M25

–

20 Amp Yellow

Fuel Pump, Diesel Lift Pump – Export Only

M26

–

10 Amp Red

Power Window Switch, Driver Window

Switch

M27

–

10 Amp Red

Ignition Switch Feed, Wireless Module

M28

–

10 Amp Red

Powertrain Control Module

M29

–

10 Amp Red

Powertrain

342

IN CASE OF EMERGENCY

Cavity

Cartridge Fuse

Mini Fuse

Description

M30

–

15 Amp Blue

Wiper Motor Frt, J1962 Diagnostic Feed

M31

–

20 Amp Yellow

Backup Lamps

M32

–

10 Amp Red

Airbag Controller, TT EUROPE

M33

–

10 Amp Red

Powertrain Controller

M34

–

10 Amp Red

Park Assist, Climate Control System, Head-

lamp Wash, Compass

M35

–

10 Amp Red

Heated Mirrors

M36

–

20 Amp Yellow

Power Outlet

M37

–

10 Amp Red

Anti-Lock Brake System, Electronic Stability

Control, Stop Lamp Switch, Fuel Pump Re-

lay

M38

–

25 Amp Clear

Lock/Unlock Motors

CAUTION!

• When installing the Integrated Power Module cover,

it is important to ensure the cover is properly posi-
tioned and fully latched. Failure to do so may allow
water to get into the Integrated Power Module, and
possibly result in an electrical system failure.

(Continued)

CAUTION! (Continued)

• 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.

IN CASE OF EMERGENCY

343

JACKING AND TIRE CHANGING

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
operating 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.

Jack Location

The jack and lug wrench are located in the rear storage
compartment.

NOTE:

Turn the black plastic wing nut counterclockwise to

loosen the jack from the storage bin.

Jack Storage

344

IN CASE OF EMERGENCY

Spare Tire Removal

To remove the spare tire from the carrier, remove the tire
cover, if equipped, and remove the lug nuts with the lug
wrench turning them counterclockwise.

NOTE:

If you have added aftermarket accessories to the

spare tire mounted carrier, it cannot exceed a gross weight
of 85 lbs (38.5 kg) including the weight of the spare tire.

Preparations For Jacking

1. Park on a firm, level surface. Avoid ice or slippery areas.

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 being hit when operating the jack or
changing the wheel.

2. Turn on the Hazard Warning flasher.

3. Apply the parking brake.

4. Shift the automatic transmission into PARK, or a manual

transmission into REVERSE.

5. Turn the ignition to LOCK.

6. Block both the front and rear of the wheel diagonally

opposite the jacking position. For example, if the right
front wheel is being changed, block the left rear wheel.

NOTE:

Passengers should not remain in the

vehicle when the vehicle is being jacked.

Plastic Wing Nut Location

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345

Jacking Instructions

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 flasher.

• Block the wheel diagonally opposite the wheel to be

raised.

• Set the parking brake firmly and set an automatic

transmission in PARK; a manual transmission in
REVERSE.

• Never start or run the engine with the vehicle 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 indicated and for

lifting this vehicle during a tire change.

• If working on or near a roadway, be extremely

careful of motor traffic.

(Continued)

WARNING! (Continued)

• To assure that spare tires, flat or inflated, are securely

stowed, spares must be stowed with the valve stem
facing the ground.

CAUTION!

Do not attempt to raise the vehicle by jacking on
locations other than those indicated.

Jack Warning Label

346

IN CASE OF EMERGENCY

1. 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.

4. Operate the jack from the front or the rear of the vehicle.

Place the jack under the axle tube, as shown. Do not
raise the vehicle until you are sure the jack is fully
engaged.

5. Raise the vehicle by turning the jack screw clockwise.

Raise the vehicle only until the tire just clears the surface
and enough clearance is obtained to install the spare tire.
Minimum tire lift provides maximum stability.

WARNING!

Raising the vehicle higher than necessary can make the
vehicle less stable. It could slip off the jack and hurt
someone near it. Raise the vehicle only enough to
remove the tire.

Front Jacking Location

Rear Jacking Location

IN CASE OF EMERGENCY

347

6. Remove the lug nuts and wheel.

7. Position the spare wheel/tire on the vehicle and install

the lug nuts with the cone-shaped end toward the
wheel. Lightly tighten the lug nuts clockwise.

WARNING!

To avoid the risk of forcing the vehicle off the jack, do
not tighten the wheel nuts fully until the vehicle has
been lowered. Failure to follow this warning may
result in serious injury.

8. Lower the vehicle by turning the jack screw to the left,

and remove the jack.

9. Finish tightening the lug nuts. Push down on the

wrench while tightening for increased leverage. Alter-
nate nuts until each nut has been tightened twice. Refer
to “Torque Specifications” in “Technical Specifications”
for correct lug nut torque.

10. Remove the jack assembly and wheel blocks.

11. Secure the tire, jack, and tools in their proper locations.

WARNING!

A loose tire or jack thrown forward in a collision or
hard stop, could endanger the occupants of the vehicle.
Always stow the jack parts and the spare tire in the
places provided.

Road Tire Installation

1. Mount the road tire on the axle.

2. Install the remaining lug nuts with the cone shaped end

of the nut toward the wheel. Lightly tighten the lug
nuts.

WARNING!

To avoid the risk of forcing the vehicle off the jack, do
not tighten the wheel nuts fully until the vehicle has
been lowered. Failure to follow this warning may
result in serious injury.

348

IN CASE OF EMERGENCY

3. Lower the vehicle to the ground by turning the jack

handle counterclockwise.

4. Finish tightening the lug nuts. Push down on the

wrench while at the end of the handle for increased
leverage. Tighten the lug nuts in a star pattern until each
nut has been tightened twice. For the correct lug nut
torque refer to “Torque Specifications” in “Technical
Specifications”. If in doubt about the correct tightness,
have them checked with a torque wrench by your
authorized dealer or service station.

5. After 25 miles (40 km), check the lug nut torque with a

torque wrench to ensure that all lug nuts are properly
seated against the wheel.

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 improperly, so please
follow the procedures in this section carefully.

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.

NOTE:

When using a portable battery booster pack, follow

the manufacturer’s operating instructions and precautions.

IN CASE OF EMERGENCY

349

Preparations For Jump Start

The battery in your vehicle is located in the right rear of the
engine compartment, behind the Power Distribution Cen-
ter.

1 — Positive Battery Post
2 — Negative Battery Post

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.

1. Apply the parking brake, shift the automatic transmis-

sion into PARK (manual transmission in NEUTRAL)
and turn the ignition to LOCK.

2. Turn off the heater, radio, and all unnecessary electrical

accessories.

3. If using another vehicle to jump start the battery, park

the vehicle within the jumper cables reach, set the
parking brake and make sure the ignition is OFF.

Battery Posts

350

IN CASE OF EMERGENCY

WARNING!

Do not allow vehicles to touch each other as this could
establish a ground connection and personal injury
could result.

Jump Starting Procedure

WARNING!

Failure to follow this jump starting procedure could
result in personal injury or property damage due to
battery explosion.

CAUTION!

Failure to follow these procedures could result in
damage to the charging system of the booster vehicle
or the discharged vehicle.

NOTE:

Make sure at all times that unused ends of jumper

cables are not contacting each other or either vehicle while
making connections.

Connecting The Jumper Cables

1. Connect the positive (+) end of the jumper cable to the

remote positive (+) post of the discharged vehicle.

2. Connect the opposite end of the positive (+) jumper

cable to the positive (+) post of the booster battery.

3. Connect the negative end (-) of the jumper cable to the

negative (-) post of the booster battery.

4. Connect the opposite end of the negative (-) jumper

cable to a good engine ground (exposed metal part of
the discharged vehicle’s engine) away from the battery
and the fuel injection system.

WARNING!

Do not connect the jumper cable to the negative (-) post
of the discharged battery. The resulting electrical spark
could cause the battery to explode and could result in
personal injury. Only use the specific ground point, do
not use any other exposed metal parts.

5. Start the engine in the vehicle that has the booster

battery, let the engine idle a few minutes, and then start
the engine in the vehicle with the discharged battery.

IN CASE OF EMERGENCY

351

CAUTION!

Do not run the booster vehicle engine above 2000 rpm
since it provides no charging benefit, wastes fuel and
can damage booster vehicle engine.

6. Once the engine is started, remove the jumper cables in

the reverse sequence:

Disconnecting The Jumper Cables

1. Disconnect the negative (-) end of the jumper cable from

the engine ground of the vehicle with the discharged
battery.

2. Disconnect the opposite end of the negative (-) jumper

cable from the negative (-) post of the booster battery.

3. Disconnect the positive (+) end of the jumper cable from

the positive (+) post of the booster battery.

4. Disconnect the opposite end of the positive (+) jumper

cable from the remote positive (+) post of the discharged
vehicle.

5. Reinstall the protective cover over the remote positive

(+)

post of the discharged vehicle.

If frequent jump starting is required to start your vehicle
you should have the battery and charging system tested at
an authorized dealer.

CAUTION!

Accessories plugged into the vehicle power outlets
draw power from the vehicle’s battery, even when not
in use (i.e., cellular devices, etc.). Eventually, if plugged
in long enough without engine operation, the vehicle’s
battery will discharge sufficiently to degrade battery
life and/or prevent the engine from starting.

IF YOUR ENGINE OVERHEATS

In any of the following situations, you can reduce the
potential for overheating by taking the appropriate action.
• On the highways — slow down.
• In city traffic — while stopped, shift transmission into

NEUTRAL, but do not increase engine idle speed.

CAUTION!

Driving with a hot cooling system could damage your
vehicle. If the temperature gauge reads HOT (H), pull

(Continued)

352

IN CASE OF EMERGENCY

CAUTION! (Continued)

over and stop the vehicle. Idle the vehicle with the air
conditioner turned off until the pointer drops back
into the normal range. If the pointer remains on HOT
(H), and you hear continuous chimes, turn the engine
off immediately and call for service.

NOTE:

There are steps that you can take to slow down an

impending overheat condition:
• If your air conditioner (A/C) is on, turn it off. The A/C

system adds heat to the engine cooling system and
turning the A/C off can help remove this heat.

• You can also turn the temperature control to maximum

heat, the mode control to floor and the blower control to
high. This allows the heater core to act as a supplement
to the radiator and aids in removing heat from the
engine cooling system.

WARNING!

You or others can be badly burned by hot engine
coolant (antifreeze) or steam from your radiator. If you
see or hear steam coming from under the hood, do not

(Continued)

WARNING! (Continued)

open the hood until the radiator has had time to cool.
Never try to open a cooling system pressure cap when
the radiator or coolant bottle is hot.

GEAR SELECTOR OVERRIDE

If a malfunction occurs and the gear selector cannot be
moved out of the PARK position, you can use the following
procedure to temporarily move the gear selector:

1. Turn the engine OFF.

2. Firmly apply the parking brake.

3. Using a small screwdriver or similar tool, remove the

gear selector override access cover (located to the right
of the gear selector).

4. Turn the ignition to the ACC or ON/RUN position, but

do not start the engine.

IN CASE OF EMERGENCY

353

5. Press and maintain firm pressure on the brake pedal.

6. Insert the screwdriver or similar tool into the access

port, and push and hold the override release lever
down.

7. Move the gear selector to the NEUTRAL position.

8. The vehicle may then be started in NEUTRAL.

9. Reinstall the gear selector override access cover.

FREEING A STUCK VEHICLE

If your vehicle becomes stuck in mud, sand or snow, it can
often be moved using a rocking motion. Turn the steering
wheel right and left to clear the area around the front
wheels. Then, shift back and forth between DRIVE and
REVERSE (with automatic transmission) or SECOND
GEAR and REVERSE (with manual transmission), while
gently pressing the accelerator. Use the least amount of
accelerator pedal pressure that will maintain the rocking
motion, without spinning the wheels or racing the engine.

CAUTION!

Racing the engine or spinning the wheels may lead to
transmission overheating and failure. Allow the en-
gine to idle with the transmission in NEUTRAL for at
least one minute after every five rocking-motion
cycles. This will minimize overheating and reduce the
risk of clutch or transmission failure during prolonged
efforts to free a stuck vehicle.

Gear Selector Override Access Cover

354

IN CASE OF EMERGENCY

Jeep Wrangler JK (2018 year). Manual - part 22