Jeep Grand Cherokee WK (2022 year). Manual in english

266

SERVICING AND MAINTENANCE

3. Remove the engine air cleaner filter from the

housing assembly.

Engine Air Cleaner Filter Assembly

Engine Air Cleaner Filter Installation

NOTE:

Inspect and clean the housing if significant dirt or

debris is present before replacing the engine air

cleaner filter.
1. Install the engine air cleaner filter into the

housing assembly with the engine air cleaner

filter inspection surface facing downward.

2. Install the engine air cleaner filter cover onto

the housing assembly locating tabs.

3. Latch the spring clips and lock the engine air

cleaner filter cover to the housing assembly.

ONDITIONER

AINTENANCE

For best possible performance, the air conditioner

should be checked and serviced by an authorized

dealer at the start of each warm season. This

service should include cleaning of the condenser

fins and a performance test. Drive belt tension

should also be checked at this time.

Refrigerant Recovery And Recycling

R-134a — If Equipped

R-134a Air Conditioning Refrigerant is a Hydrofluo

rocarbon (HFC) that is an ozone-friendly

substance. The manufacturer recommends that

air conditioning service be performed by an

authorized dealer or other service facilities using

recovery and recycling equipment.

NOTE:

Use only the manufacturer approved A/C system

PAG compressor oil and refrigerants.

1 — Engine Air Cleaner Filter Cover
2 — Engine Air Cleaner Filter

WARNING!



Use only refrigerants and compressor lubri

cants approved by the manufacturer for your

air conditioning system. Some unapproved

refrigerants are flammable and can explode,

injuring you. Other unapproved refrigerants or

lubricants can cause the system to fail,

requiring costly repairs. Refer to Warranty Infor

mation Book, for further warranty information.



The air conditioning system contains refrig

erant under high pressure. To avoid risk of

personal injury or damage to the system,

adding refrigerant or any repair requiring lines

to be disconnected should be done by an

experienced technician.

CAUTION!

Do not use chemical flushes in your air

conditioning system as the chemicals can

damage your air conditioning components. Such

damage is not covered by the New Vehicle

Limited Warranty.

SERVICING AND MAINTENANCE

267

Refrigerant Recovery And Recycling

R-1234yf — If Equipped

R-1234yf Air Conditioning Refrigerant is a Hydroflu

oroolefin (HFO) that is endorsed by the

Environmental Protection Agency and is an

ozone-friendly substance with a low

global-warming potential. The manufacturer

recommends that air conditioning service be

performed by an authorized dealer using recovery

and recycling equipment.

NOTE:

Use only the manufacturer approved A/C system

PAG compressor oil, and refrigerants.

Cabin Air Filter

For the proper maintenance intervals

page 258.

The cabin air filter is located in the fresh air inlet

behind the glove compartment. Perform the

following procedure to replace the filter:
1. Open the glove compartment and remove all

contents.

Glove Compartment

2. There are glove compartment travel stops on

both sides of the glove compartment door,

partially close the glove compartment door

and push inward to release the glove

compartment travel stop on one side and

repeat this procedure for the opposite side.

3. Pull the right hand side of the glove

compartment door toward the rear of the

vehicle to disengage the glove compartment

door from its hinges.

NOTE:

When disengaging the glove compartment door

from its hinges, there will be some resistance.
4. With the glove compartment door loose,

remove the glove compartment tension tether

and tether clip by sliding the clip toward the

face of the glove compartment door and lifting

the clip out of glove compartment door.

Right Side Of Glove Compartment

WARNING!

Do not remove the cabin air filter while the

vehicle is running, or while the ignition is in the

ACC or ON/RUN mode. With the cabin air filter

removed and the blower operating, the blower

can contact hands and may propel dirt and

debris into your eyes, resulting in personal injury.

1 — Glove Compartment Travel Stops
2 — Glove Compartment Tension Tether
3 — Glove Compartment Door

1 — Glove Compartment Tension Tether
2 — Glove Compartment Door

268

SERVICING AND MAINTENANCE

(Continued)

5. Remove the filter cover by disengaging the

retaining tab and mid way snap that secures

the filter cover to the HVAC housing. Disengage

the mid way snap by pulling the door outward.

Unhinge the filter cover on the right side to fully

remove the cover.

Cabin Air Filter Cover

6. Remove the cabin air filter by pulling it straight

out of the housing.

7. Install the cabin air filter with the arrow on the

filter pointing toward the floor. When installing

the filter cover, make sure the retaining tabs

fully engage the cover.

8. Reinstall the glove compartment door on the

door hinge and reattach the tension tether by

inserting the tether clip in the glove

compartment and sliding the clip away from

the face of the glove compartment door.

9. Push the door to the near closed position to

reengage the glove compartment travel stops.

NOTE:

Ensure the glove compartment door hinges and

glove compartment travel stops are fully engaged.

CCESSORY

RIVE

ELT

NSPECTION

When inspecting accessory drive belts, small

cracks that run across the ribbed surface of the

belt from rib to rib, are considered normal. This is

not a reason to replace belt. However, cracks

running along a rib (not across) are not normal. Any

belt with cracks running along a rib must be

replaced. Also have the belt replaced if it has

excessive wear, frayed cords or severe glazing.

Accessory Belt (Serpentine Belt)

1 — Retaining Tab
2 — Mid Way Snap
3 — Filter Cover Hinge

CAUTION!

The cabin air filter is identified with an arrow to

indicate airflow direction through the filter.

Failure to properly install the filter will result in

the need to replace it more often.

WARNING!



Do not attempt to inspect an accessory drive

belt with vehicle running.



When working near the radiator cooling fan,

disconnect the fan motor lead. The fan is

temperature controlled and can start at any

time regardless of ignition mode. You could be

injured by the moving fan blades.



You can be badly injured working on or around

a motor vehicle. Only do service work for which

you have the knowledge and the proper equip

ment. If you have any doubt about your ability

to perform a service job, take your vehicle to a

competent mechanic.

WARNING!

SERVICING AND MAINTENANCE

269

Conditions that would require replacement:



Rib chunking (one or more ribs has separated

from belt body)



Rib or belt wear



Longitudinal belt cracking (cracks between

two ribs)



Belt slips



“Groove jumping" (belt does not maintain

correct position on pulley)



Belt broken (identify and correct problem before

new belt is installed)



Noise (objectionable squeal, squeak, or rumble

is heard or felt while drive belt is in operation)

Some conditions can be caused by a faulty

component such as a belt pulley. Belt pulleys

should be carefully inspected for damage and

proper alignment.
Belt replacement on some models requires the

use of special tools, we recommend having your

vehicle serviced at an authorized dealer.

ODY

UBRICATION

Locks and all body pivot points, including such

items as seat tracks, door hinge pivot points and

rollers, liftgate, tailgate, decklid, sliding doors and

hood hinges, should be lubricated periodically use

a lithium-based grease, such as Mopar® Spray

White Lube to ensure quiet, easy operation and to

protect against rust and wear. Prior to the

application of any lubricant, the parts concerned

should be wiped clean to remove dust and grit;

after lubricating, excess oil and grease should be

removed. Particular attention should also be given

to hood latching components to ensure proper

function. When performing other underhood

services, the hood latch, release mechanism and

safety catch should be cleaned and lubricated.
The external lock cylinders should be lubricated

twice a year, preferably in the Autumn and Spring.

Apply a small amount of a high quality lubricant,

such as Mopar® Lock Cylinder Lubricant directly

into the lock cylinder.

INDSHIELD

IPER

LADES

Clean the rubber edges of the wiper blades and the

windshield periodically with a sponge or soft cloth

and a mild nonabrasive cleaner. This will remove

accumulations of salt or road film.

Operation of the wipers on dry glass for long

periods may cause deterioration of the wiper

blades. Always use washer fluid when using the

wipers to remove salt or dirt from a dry windshield.
Avoid using the wiper blades to remove frost or ice

from the windshield. Keep the blade rubber out of

contact with petroleum products such as engine

oil, gasoline, etc.

NOTE:

Life expectancy of wiper blades varies depending

on geographical area and frequency of use. If chat

tering, marks, water lines or wet spots are present,

clean the wiper blades or replace as necessary.
The wiper blades and wiper arms should be

inspected periodically, not just when wiper

performance problems are experienced. This

inspection should include the following points:



Wear or uneven edges



Foreign material



Hardening or cracking



Deformation or fatigue

If a wiper blade or wiper arm is damaged, replace

the affected wiper arm or blade with a new unit. Do

not attempt to repair a wiper arm or blade that is

damaged.

270

SERVICING AND MAINTENANCE

Front Wiper Blade Removal/Installation

1. Lift the wiper arm to raise the wiper blade off

of the glass, until the wiper arm is in the full

up position.

Wiper Blade With Release Tab In Locked Position

2. To disengage the wiper blade from the wiper

arm, flip up the release tab on the wiper blade

and while holding the wiper arm with one

hand, slide the wiper blade down towards the

base of the wiper arm.

Wiper Blade With Release Tab In Unlocked Position

3. With the wiper blade disengaged, remove the

wiper blade from the wiper arm by holding the

wiper arm with one hand and separating the

wiper blade from the wiper arm with the other

hand (move the wiper blade toward the right

side of the vehicle to separate the wiper blade

from the wiper arm).

Wiper Blade Removed From Wiper Arm

4. Gently lower the wiper arm onto the glass.

CAUTION!

Do not allow the wiper arm to spring back

against the glass without the wiper blade in

place or the glass may be damaged.

1 — Wiper
2 — Release Tab
3 — Wiper Arm

1 — Wiper Blade
2 — Release Tab
3 — Wiper Arm

SERVICING AND MAINTENANCE

271

Installing The Front Wipers
1. Lift the wiper arm off of the glass, until the

wiper arm is in the full up position.

2. Position the wiper blade near the hook on the

tip of the wiper arm with the wiper release tab

open and the blade side of the wiper facing up

and away from the windshield.

3. Insert the hook on the tip of the arm through

the opening in the wiper blade under the

release tab.

4. Slide the wiper blade up into the hook on the

wiper arm and rotate the wiper blade until it is

flush against the wiper arm. Fold down the

latch release tab and snap it into its locked

position. Latch engagement will be

accompanied by an audible click.

5. Gently lower the wiper blade onto the glass.

Rear Wiper Blade Removal/Installation

1. Lift the rear wiper arm pivot cap away from

the glass to allow the rear wiper blade to be

raised off of the glass.

NOTE:

The rear wiper arm cannot be fully raised off the

glass unless the wiper arm pivot cap is unsnapped

first. Attempting to fully raise the rear wiper arm

without unsnapping the wiper arm pivot cap may

damage the vehicle.

Wiper Pivot Cap In Unlocked Position

2. Lift the rear wiper arm fully off the glass.
3. To remove the wiper blade from the wiper arm,

grasp the bottom end of the wiper blade

nearest to wiper arm with your right hand. With

your left hand, hold the wiper arm as you pull

the wiper blade away from the wiper arm past

its stop far enough to unsnap the wiper blade

pivot pin from the receptacle on the end of the

wiper arm.

NOTE:

Resistance will be accompanied by an audible

snap.

Wiper Blade In Folded Out Position

4. Gently lower the tip of the wiper arm onto the

glass.

1 — Wiper Arm Pivot Cap
2 — Wiper Arm

1 — Wiper Blade
2 — Wiper Arm
3 — Wiper Arm Pivot Cap

272

SERVICING AND MAINTENANCE

(Continued)

Installing The Rear Wiper
1. Lift the rear wiper arm fully off the glass.

NOTE:

The rear wiper arm cannot be fully raised off the

glass unless the wiper arm pivot cap is unsnapped

first. Attempting to fully raise the rear wiper arm

without unsnapping the wiper arm pivot cap may

damage the vehicle.
2. Insert the wiper blade pivot pin into the

opening on the end of the wiper arm. Grab the

bottom end of the wiper arm with one hand,

and press the wiper blade flush with the wiper

arm until it snaps into place.

3. Lower the wiper blade onto the glass and snap

the wiper arm pivot cap back into place.

XHAUST

YSTEM

The best protection against carbon monoxide entry

into the vehicle body is a properly maintained

engine exhaust system.
If you notice a change in the sound of the exhaust

system; or if the exhaust fumes can be detected

inside the vehicle; or when the underside or rear of

the vehicle is damaged; have an authorized

technician inspect the complete exhaust system

and adjacent body areas for broken, damaged,

deteriorated, or mispositioned parts. Open seams

or loose connections could permit exhaust fumes

to seep into the passenger compartment.

In addition, have the exhaust system inspected

each time the vehicle is raised for lubrication or oil

change. Replace as required.

Under normal operating conditions, the catalytic

converter will not require maintenance. However, it

is important to keep the engine properly tuned to

ensure proper catalyst operation and prevent

possible catalyst damage.

NOTE:

Intentional tampering with emissions control

systems can result in civil penalties being

assessed against you.
In unusual situations involving grossly

malfunctioning engine operation, a scorching odor

may suggest severe and abnormal catalyst

overheating. If this occurs, stop the vehicle, turn off

the engine and allow it to cool. Service, including a

tune-up to the manufacturer specifications, should

be obtained immediately.

WARNING!



Exhaust gases can injure or kill. They contain

Carbon Monoxide (CO), which is colorless and

odorless. Breathing it can make you uncon

scious and can eventually poison you

page 234.



A hot exhaust system can start a fire if you

park over materials that can burn. Such mate

rials might be grass or leaves coming into

contact with your exhaust system. Do not park

or operate your vehicle in areas where your

exhaust system can contact anything that can

burn.

CAUTION!



The catalytic converter requires the use of

unleaded fuel only. Leaded gasoline will

destroy the effectiveness of the catalyst as an

emissions control device and may seriously

reduce engine performance and cause

serious damage to the engine.



Damage to the catalytic converter can result if

your vehicle is not kept in proper operating

condition. In the event of engine malfunction,

particularly involving engine misfire or other

apparent loss of performance, have your

vehicle serviced promptly. Continued opera

tion of your vehicle with a severe malfunction

could cause the converter to overheat,

resulting in possible damage to the converter

and vehicle.

CAUTION!

SERVICING AND MAINTENANCE

273

(Continued)

To minimize the possibility of catalytic converter

damage:



Do not interrupt the ignition when the transmis

sion is in gear and the vehicle is in motion.



Do not try to start the vehicle by pushing or

towing the vehicle.



Do not idle the engine with any ignition compo

nents disconnected or removed, such as when

diagnostic testing, or for prolonged periods

during very rough idle or malfunctioning oper

ating conditions.

OOLING

YSTEM

Engine Coolant Checks

Check the engine coolant (antifreeze) protection

every 12 months (before the onset of freezing

weather, where applicable). If the engine coolant is

dirty, the system should be drained, flushed, and

refilled with fresh Organic Additive Technology

(OAT) coolant (conforming to MS.90032) by an

authorized dealer. Check the front of the A/C

condenser for any accumulation of bugs, leaves,

etc. If dirty, clean by gently spraying water from a

garden hose vertically down the face of the

condenser.
Check the engine 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.

Cooling System — Drain, Flush And Refill

NOTE:

Some vehicles require special tools to add coolant

properly. Failure to fill these systems properly

could lead to severe internal engine damage. If any

coolant is needed to be added to the system,

please contact an authorized dealer.
If the engine coolant (antifreeze) is dirty or

contains visible sediment, have an authorized

dealer clean and flush with Organic Additive

Technology (OAT) coolant (conforming to

MS.90032).
For the proper maintenance intervals

page 258.

Selection Of Coolant

For further information

page 317.

NOTE:



Mixing of engine coolant (antifreeze) other than

specified Organic Additive Technology (OAT)

engine coolant, may result in engine damage

and may decrease corrosion protection. OAT

engine coolant is different and should not be

mixed with Hybrid Organic Additive Technology

(HOAT) engine coolant or any “globally compat

ible” coolant. If a non-OAT engine coolant is

introduced into the cooling system in an emer

gency, the cooling system will need to be

drained, flushed, and refilled with fresh OAT

coolant (conforming to MS.90032), by an autho

rized dealer as soon as possible.

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 open the hood until the

radiator has had time to cool. Never open a

cooling system pressure cap when the radi

ator or coolant bottle is hot.



Keep hands, tools, clothing, and jewelry away

from the radiator cooling fan when the hood is

raised. The fan starts automatically and may

start at any time, whether the engine is

running or not.



When working near the radiator cooling fan,

disconnect the fan motor lead or turn the igni

tion to the OFF mode. The fan is temperature

controlled and can start at any time the igni

tion is in the ON mode.

WARNING!

274

SERVICING AND MAINTENANCE



Do not use water alone or alcohol-based engine

coolant products. Do not use additional rust

inhibitors or antirust products, as they may not

be compatible with the radiator engine coolant

and may plug the radiator.



This vehicle has not been designed for use with

propylene glycol-based engine coolant. Use of

propylene glycol-based engine coolant is not

recommended.



Some vehicles require special tools to add

coolant properly. Failure to fill these systems

properly could lead to severe internal engine

damage. If any coolant is needed to be added to

the system please contact an authorized dealer.

Adding Coolant

Your vehicle has been built with an improved

engine coolant (OAT coolant conforming to

MS.90032) that allows extended maintenance

intervals. This engine coolant (antifreeze) can be

used up to 10 years or 150,000 miles

(240,000 km) before replacement. To prevent

reducing this extended maintenance period, it is

important that you use the same engine coolant

(OAT coolant conforming to MS.90032) throughout

the life of your vehicle.
Please review these recommendations for using

Organic Additive Technology (OAT) engine coolant

that meets the requirements of the manufacturer

Material Standard MS.90032. When adding

engine coolant:



We recommend using Mopar® Antifreeze/

Coolant 10 Year/150,000 Mile (240,000 km)

Formula OAT that meets the requirements of the

manufacturer Material Standard MS.90032.



Mix a minimum solution of 50% OAT engine

coolant that meets the requirements of the

manufacturer Material Standard MS.90032

and distilled water. Use higher concentrations

(not to exceed 70%) if temperatures below

−34°F (−37°C) are anticipated. Please contact

an authorized dealer for assistance.



Use only high purity water such as distilled or

deionized water when mixing the water/engine

coolant solution. The use of lower quality water

will reduce the amount of corrosion protection

in the engine cooling system.

NOTE:



It is the owner's responsibility to maintain the

proper level of protection against freezing

according to the temperatures occurring in the

area where the vehicle is operated.



Some vehicles require special tools to add

coolant properly. Failure to fill these systems

properly could lead to severe internal engine

damage. If any coolant is needed to be added

to the system, please contact a local authorized

dealer.



Mixing engine coolant types is not recom

mended and can result in cooling system

damage. If HOAT and OAT coolant are mixed in

an emergency, have an authorized dealer drain,

flush, and refill with OAT coolant (conforming to

MS.90032) as soon as possible.

Cooling System Pressure Cap

The cap must be fully tightened to prevent loss of

engine coolant (antifreeze), and to ensure that

engine coolant will return to the radiator from the

coolant expansion bottle/recovery tank

(if equipped).
The cap should be inspected and cleaned if there

is any accumulation of foreign material on the

sealing surfaces.

WARNING!



Do not open hot engine cooling system. Never

add engine coolant (antifreeze) when the

engine is overheated. Do not loosen or

remove the cap to cool an overheated engine.

Heat causes pressure to build up in the

cooling system. To prevent scalding or injury,

do not remove the pressure cap while the

system is hot or under pressure.



Do not use a pressure cap other than the one

specified for your vehicle. Personal injury or

engine damage may result.

SERVICING AND MAINTENANCE

275

Disposal Of Used Coolant

Used ethylene glycol-based coolant (antifreeze) is

a regulated substance requiring proper disposal.

Check with your local authorities to determine the

disposal rules for your community. To prevent

ingestion by animals or children, do not store

ethylene glycol-based coolant in open containers

or allow it to remain in puddles on the ground,

clean up any ground spills immediately. If ingested

by a child or pet, seek emergency assistance

immediately.

Coolant Level

The coolant bottle provides a quick visual method

for determining that the coolant level is adequate.

With the engine OFF and cold, the level of the

engine coolant (antifreeze) in the bottle should be

between the ranges indicated on the bottle.
The radiator normally remains completely full, so

there is no need to remove the radiator/coolant

pressure cap unless checking for engine coolant

freeze point or replacing coolant. Advise your

service attendant of this. As long as the engine

operating temperature is satisfactory, the coolant

bottle need only be checked once a month.
When additional engine coolant is needed to

maintain the proper level, only OAT coolant that

meets the requirements of the manufacturer

Material Standard MS.90032 should be added to

the coolant bottle. Do not overfill.

Cooling System Notes

NOTE:

When the vehicle is stopped after a few miles/kilo

meters of operation, you may observe vapor

coming from the front of the engine compartment.

This is normally a result of moisture from rain,

snow, or high humidity accumulating on the

radiator and being vaporized when the thermostat

opens, allowing hot engine coolant (antifreeze) to

enter the radiator.
If an examination of your engine compartment

shows no evidence of radiator or hose leaks, the

vehicle may be safely driven. The vapor will soon

dissipate.



Do not overfill the coolant expansion bottle.



Check the coolant freeze point in the radiator

and in the coolant expansion bottle. If engine

coolant needs to be added, the contents of the

coolant expansion bottle must also be protected

against freezing.



If frequent engine coolant additions are

required, the cooling system should be pressure

tested for leaks.



Maintain engine coolant concentration at a

minimum of 50% OAT coolant (conforming to

MS.90032) and distilled water for proper corro

sion protection of your engine which contains

aluminum components.



Make sure that the coolant expansion bottle

overflow hoses are not kinked or obstructed.



Keep the front of the radiator clean. If your

vehicle is equipped with air conditioning, keep

the front of the condenser clean.



Do not change the thermostat for Summer or

Winter operation. If replacement is ever neces

sary, install ONLY the correct type thermostat.

Other designs may result in unsatisfactory

engine cooling performance, poor gas mileage,

and increased emissions.

RAKE

YSTEM

In order to ensure brake system performance, all

brake system components should be inspected

periodically. For the proper maintenance intervals

page 258.

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.

276

SERVICING AND MAINTENANCE

(Continued)

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. For

further information

page 317.

UTOMATIC

RANSMISSION

Special Additives

The manufacturer strongly recommends against

using any special additives in the transmission.

Automatic Transmission Fluid (ATF) is an

engineered product and its performance may be

impaired by supplemental additives. Therefore, do

not add any fluid additives to the transmission.

Avoid using transmission sealers as they may

adversely affect seals.

WARNING!



Use only the manufacturer recommended

brake fluid

page 317. 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.



To avoid contamination from foreign matter or

moisture, use only new brake fluid or fluid that

has been in a tightly closed container. Keep

the master cylinder reservoir cap secured at

all times. Brake fluid in an open container

absorbs moisture from the air resulting in a

lower boiling point. This may cause it to boil

unexpectedly during hard or prolonged

braking, resulting in sudden brake failure. This

could result in a collision.



Overfilling the brake fluid reservoir can result

in spilling brake fluid on hot engine parts,

causing the brake fluid to catch fire. Brake

fluid can also damage painted and vinyl

surfaces, care should be taken to avoid its

contact with these surfaces.



Do not allow petroleum based fluid to contam

inate the brake fluid. Brake seal components

could be damaged, causing partial or

complete brake failure. This could result in a

collision.

WARNING!

CAUTION!

Do not use chemical flushes in your

transmission as the chemicals can damage your

transmission components. Such damage is not

covered by the New Vehicle Limited Warranty.

SERVICING AND MAINTENANCE

277

Fluid Level Check

The fluid level is preset at the factory and does not

require adjustment under normal operating

conditions. Routine fluid level checks are not

required; therefore the transmission has no

dipstick. An authorized dealer can check the

transmission fluid level using special service tools.

If you notice fluid leakage or transmission

malfunction, visit an authorized dealer

immediately to have the transmission fluid level

checked. Operating the vehicle with an improper

fluid level can cause severe transmission damage.

Fluid And Filter Changes

Under normal operating conditions, the fluid

installed at the factory will provide satisfactory

lubrication for the life of the vehicle.
Routine fluid and filter changes are not required.

However, change the fluid and filter if the fluid

becomes contaminated (with water, etc.), or if the

transmission is disassembled for any reason.

Selection Of Lubricant

It is important to use the proper transmission fluid

to ensure optimum transmission performance and

life. Use only the manufacturer specified

transmission fluid

page 317. It is important to

maintain the transmission fluid at the correct level

using the recommended fluid.

NOTE:

No chemical flushes should be used in any trans

mission; only the approved lubricant should be

used.

RONT

EAR

XLE

LUID

For normal service, periodic fluid level checks are

not required. When the vehicle is serviced for other

reasons, the exterior surfaces of the axle assembly

should be inspected. If gear oil leakage is

suspected inspect the fluid level.

Front Axle Fluid Level Check

The front axle oil level needs to be no lower than

1/8 inch (3 mm) below the bottom of the fill hole.
The front axle fill and drain plugs should be

tightened to 22 to 29 ft lb (30 to 40 N·m).

Rear Axle Fluid Level Check

The rear axle oil level needs to be no lower than

1/8 inch (3 mm) below the bottom of the fill hole.
The rear axle fill and drain plugs should be

tightened to 22 to 29 ft lb (30 to 40 N·m).

Selection Of Lubricant

Use only the manufacturer recommended fluid

page 317.

CAUTION!

If a transmission fluid leak occurs, visit an

authorized dealer immediately. Severe

transmission damage may occur. An authorized

dealer has the proper tools to adjust the fluid

level accurately.

CAUTION!

Using a transmission fluid other than the

manufacturer recommended fluid may cause

deterioration in transmission shift quality and/or

torque converter shudder

page 317.

CAUTION!

Do not overtighten the plugs as it could damage

them and cause them to leak.

CAUTION!

Do not overtighten the plugs as it could damage

them and cause them to leak.

278

SERVICING AND MAINTENANCE

(Continued)

RANSFER

ASE

Fluid Level Check

For normal service, periodic fluid level checks are

not required. When the vehicle is serviced for other

reasons the exterior surfaces of the transfer case

assembly should be inspected. If oil leakage is

suspected inspect the fluid level.

Adding Fluid

With the vehicle in a level position, fill the transfer

case to bottom edge of fill plug opening.

Drain

First remove fill plug, then remove drain plug.

Recommended tightening torque for drain and fill

plugs is 15 to 25 ft lb (20 to 34 N·m).

Selection Of Lubricant

Use only the manufacturer recommended fluid

page 317.

USES

General Information

CAUTION!

When installing plugs, do not overtighten. You

could damage them and cause them to leak.

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.

The use of a fuse with a rating other than indi

cated 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. Never replace a

blown fuse with metal wires or any other mate

rial. Do not place a fuse inside a circuit

breaker cavity or vice versa. 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 disengaged.



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, transmission

system) or steering system blows, contact an

authorized dealer.

WARNING!

SERVICING AND MAINTENANCE

279

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 using power outlets for

extended periods of time with the engine off may

result in vehicle battery discharge.

Blade Fuses

Underhood Fuses

The Power Distribution Center is located in the

engine compartment on the passenger’s side,

directly behind the headlamp. This center contains

cartridge fuses, micro fuses, relays, and circuit

breakers. A description of each fuse and

component may be stamped on the inside cover,

otherwise the cavity number of each fuse is

stamped on the inside cover that corresponds to

the following chart.

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.

1 — Fuse Element
2 — Blade Fuse with a good/functional fuse

element
3 — Blade fuse with a bad/not functional fuse

element (blown fuse)

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.

SERVICING AND MAINTENANCE

281

F05

40 Amp Green

–

Air Suspension Comp *

F06

40 Amp Green

–

ABS Pump MTR

F07

30 Amp Pink

–

Starter Solenoid

F08

–

Spare

F09

30 Amp Pink

–

VAC Pump *

F10

40 Amp Green

–

CBC #2 / Ext Light

F11

30 Amp Pink

–

Trailer Tow Brake *

F12

40 Amp Green

–

CBC #3 / Power Locks

F13

40 Amp Green

–

HVAC BLWR MTR

F14

40 Amp Green

–

CBC #4 / Ext Light

F15

–

Spare

F16

–

Spare

F17

30 Amp Pink

–

Headlamp Washer *

F18

–

Spare

F19

–

Spare

F20

30 Amp Pink

–

Passenger Door Mod

F21

–

Spare

F22

20 Amp Blue

–

ECM *

F23

30 Amp Pink

–

CBC #1 / Int Light

F24

30 Amp Pink

–

Driver Door Mod

Cavity

Cartridge Fuse

Micro Fuse

Description

* If Equipped

Jeep Grand Cherokee WK (2022 year). Manual in english - page 17