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Jeep Grand Cherokee (2023 year). Manual in english - page 21

332

SERVICING AND MAINTENANCE

Inspect the front and rear axle fluid,

change if using your vehicle for police,

taxi, fleet, off-road or frequent trailer

towing.

Inspect the brake linings, parking brake

function.

Inspect transfer case fluid.

Additional Maintenance
Replace engine air cleaner filter.

Replace the cabin air filter.

To be replaced every 12,000 miles (19,000 km).

Replace spark plugs — 2.0L.

Replace spark plugs — 3.6L & 5.7L.

Flush and replace the engine coolant at

10 years or 150,000 miles (240,000 km)

whichever comes first.

Replace accessory drive belt.

Mileage Or Time Passed

(Whichever Comes First)

20,000

30,000

40,000

50,000

60,000

70,000

80,000

90,000

100,000

110,000

120,000

130,000

140,000

150,000

Or Years:

Or Kilometers:

32,000

48,000

64,000

80,000

96,000

112,000

128,000

144,000

160,000

176,000

192,000

208,000

224,000

240,000

SERVICING AND MAINTENANCE

333

Inspect accessory drive belt tensioner

and pulley, replace if necessary.

Change transfer case fluid - Normal

Usage.

Change transfer case fluid — Severe

Usage (police, taxi, fleet, off-road, or

frequent trailer towing.)

Replace PCV valve.

1. The spark plug change interval is mileage-based only, yearly intervals do not apply.

Mileage Or Time Passed

(Whichever Comes First)

20,000

30,000

40,000

50,000

60,000

70,000

80,000

90,000

100,000

110,000

120,000

130,000

140,000

150,000

Or Years:

Or Kilometers:

32,000

48,000

64,000

80,000

96,000

112,000

128,000

144,000

160,000

176,000

192,000

208,000

224,000

240,000

WARNING!



You can be badly injured working on or around a motor vehicle. Do only service work for which you have the knowledge and the right equipment. If you have

any doubt about your ability to perform a service job, take your vehicle to a competent mechanic.



Failure to properly inspect and maintain your vehicle could result in a component malfunction and affect vehicle handling and performance. This could cause

an accident.

334

SERVICING AND MAINTENANCE

ENGINE COMPARTMENT

2.0L E

NGINE

1 — Washer Fluid Reservoir Cap

5 — Brake Fluid Reservoir Access

2 — Power Distribution Center (Fuses)

6 — Engine Coolant Pressure Cap

3 — Engine Oil Dipstick

7 — Intercooler Coolant Reservoir Cap

4 — Engine Oil Fill

8 — Engine Air Cleaner Filter

SERVICING AND MAINTENANCE

335

3.6L E

NGINE

1 — Washer Fluid Reservoir Cap

5 — Engine Oil Filter Access

2 — Power Distribution Center (Fuses)

6 — Engine Oil Fill

3 — Engine Coolant Pressure Cap

7 — Brake Fluid Reservoir Access

4 — Engine Oil Dipstick

8 — Engine Air Cleaner Filter

336

SERVICING AND MAINTENANCE

5.7L E

NGINE

1 — Washer Fluid Reservoir Cap

5 — Brake Fluid Reservoir Access

2 — Power Distribution Center (Fuses)

6 — Engine Oil Dipstick

3 — Engine Coolant Pressure Cap

7 — Engine Air Cleaner Filter

4 — Engine Oil Fill

SERVICING AND MAINTENANCE

337

HECKING

EVEL

To ensure proper engine lubrication, the engine oil

must be maintained at the correct level. Check the

oil level at regular intervals, such as every fuel

stop. The best time to check the engine oil level is

about five minutes after a fully warmed up engine

is shut off.
Checking the oil while the vehicle is on level ground

will improve the accuracy of the oil level readings.
There are four possible dipstick types:



Crosshatched zone.



Crosshatched zone marked SAFE.



Crosshatched zone marked with MIN at the low

end of the range and MAX at the high end of the

range.



Crosshatched zone marked with dimples at the

MIN and the MAX ends of the range.

NOTE:

Always maintain the oil level within the crosshatch

markings on the dipstick.
Adding 1 qt (1.0 L) of oil when the reading is at the

low end of the dipstick range will raise the oil level

to the high end of the range marking.

NOTE:

Always maintain the oil level within the crosshatch

markings on the dipstick.

NOTE:

Use care when filling under hood fluids such as

engine oil, washer fluid, antifreeze, etc., to

minimize spillage onto the top of the engine. Any

excess fluid that is spilled onto the top of the

engine should be removed using compressed air

or an absorbent cloth.

DDING

ASHER

LUID

The instrument cluster display will indicate when

the washer fluid level is low. When the sensor

detects a low fluid level, the Low Washer Fluid

Warning Light will illuminate and the “Washer Fluid

Low” message will display.
The fluid reservoir for the windshield washers and

the rear window washer is shared. The fluid

reservoir is located in the engine compartment, be

sure to check the fluid level at regular intervals. Fill

the reservoir with windshield washer solvent only

(not radiator antifreeze). When refilling the washer

fluid reservoir, take some washer fluid and apply it

to a cloth or towel and wipe clean the wiper blades,

this will help blade performance. To prevent

freeze-up of your windshield washer system in cold

weather, select a solution or mixture that meets or

exceeds the temperature range of your climate.

This rating information can be found on most

washer fluid containers.

NOTE:

Use care when filling under hood fluids such as

engine oil, washer fluid, antifreeze, etc., to

minimize spillage onto the top of the engine. Any

excess fluid that is spilled onto the top of the

engine should be removed using compressed air

or an absorbent cloth.

WARNING!

Commercially available windshield washer

solvents are flammable. They could ignite and

burn you. Care must be exercised when filling or

working around the washer solution.

CAUTION!

Do not travel with the windshield washer fluid

reservoir empty: the windshield washers are

essential for improving visibility.

338

SERVICING AND MAINTENANCE

AINTENANCE

-F

REE

ATTERY

Your vehicle is equipped with a maintenance-free

battery. Water will never have to be added, and

periodic maintenance is not required.

RESSURE

ASHING

Cleaning the engine compartment with a high

pressure washer is not recommended.

VEHICLE MAINTENANCE

An authorized dealer has the qualified service

personnel, special tools, and equipment to

perform all service operations in an expert

manner. Service Manuals are available which

include detailed service information for your

vehicle. Refer to these Service Manuals before

attempting any procedure yourself.

NOTE:

Intentional tampering with emissions control

systems may void your warranty and could result in

civil penalties being assessed against you.

NGINE

Engine Oil Selection

Use only the manufacturer's recommended fluid

page 401.

WARNING!



Battery fluid is a corrosive acid solution and

can burn or even blind you. Do not allow

battery fluid to contact your eyes, skin, or

clothing. Do not lean over a battery when

attaching clamps. If acid splashes in eyes or

on skin, flush the area immediately with large

amounts of water. Refer to Jump Starting

Procedure

page 320.



Battery gas is flammable and explosive. Keep

flame or sparks away from the battery. Do not

use a booster battery or any other booster

source with an output greater than 12 Volts.

Do not allow cable clamps to touch each

other.



Battery posts, terminals, and related accesso

ries contain lead and lead compounds. Wash

hands after handling.

CAUTION!



It is essential when replacing the cables on

the battery that the positive cable is attached

to the positive post and the negative cable is

attached to the negative post. Battery posts

are marked positive (+) and negative (-) and

are identified on the battery case. Cable

clamps should be tight on the terminal posts

and free of corrosion.



If a “fast charger” is used while the battery is

in the vehicle, disconnect both vehicle battery

cables before connecting the charger to the

battery. Do not use a “fast charger” to provide

starting voltage.

CAUTION!

Precautions have been taken to safeguard all

parts and connections however, the pressures

generated by these machines is such that

complete protection against water ingress

cannot be guaranteed.

WARNING!

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

equipment. If you have any doubt about your

ability to perform a service job, take your vehicle

to a competent mechanic.

SERVICING AND MAINTENANCE

339

NOTE:

Hemi engines at times can tick right after startup

and then quiet down after approximately 30

seconds. This is normal and will not harm the

engine. This characteristic can be caused by short

drive cycles. For example, if the vehicle is started

then shut off after driving a short distance. Upon

restarting, you may experience a ticking sound.

Other causes could be if the vehicle is unused for

an extended period of time, incorrect oil, extended

oil changes or extended idling. If the engine

continues to tick or if the Malfunction Indicator

Light (MIL) comes on, see the nearest authorized

dealer.

American Petroleum Institute (API)

Approved Engine Oil

These symbols mean that the oil has been certified

by the API. The manufacturer only recommends API

trademark oils.

The API Starburst trademark certifies

0W-20, 0W-30 and 5W-30 engine oils.

The API Donut trademark certifies 0W-40

and 5W-40 engine oil.

Synthetic Engine Oils

Your engine was designed for synthetic engine oils,

only use synthetic API approved engine oils.
Synthetic engine oils which do not have both the

correct API trademark and the correct SAE viscosity

grade numbers should not be used.

Materials Added To Engine Oil

The manufacturer strongly recommends against

the addition of any additives (other than leak

detection dyes) to the engine oil. Engine oil is an

engineered product and its performance may be

impaired by supplemental additives.

Disposing Of Used Engine Oil And Oil

Filters

Care should be taken in disposing of used engine

oil and oil filters from your vehicle. Used oil and oil

filters, indiscriminately discarded, can present a

problem to the environment. Contact an

authorized dealer, service station or governmental

agency for advice on how and where used oil and

oil filters can be safely discarded in your area.

NGINE

ILTER

The engine oil filter should be replaced with a new

filter at every engine oil change.
Engine Oil Filter Selection
A full-flow type disposable oil filter should be used

for replacement. The quality of replacement filters

varies considerably. Only high quality Mopar®

filters should be used. If a Mopar® Engine Oil Filter

is unavailable only use filters that meet or exceed

SAE/USCAR-36 Filter Performance Requirements.

NGINE

LEANER

ILTER

For the proper maintenance intervals

page 331.

CAUTION!

Do not use chemical flushes in your engine oil as

the chemicals can damage your engine. Such

damage is not covered by the New Vehicle

Limited Warranty.

WARNING!

The air induction system (air cleaner, hoses,

etc.) can provide a measure of protection in the

case of engine backfire. Do not remove the air

induction system (air cleaner, hoses, etc.) unless

such removal is necessary for repair or

maintenance. Make sure that no one is near the

engine compartment before starting the vehicle

with the air induction system (air cleaner, hoses,

etc.) removed. Failure to do so can result in

serious personal injury.

340

SERVICING AND MAINTENANCE

Engine Air Cleaner Filter Selection
The quality of replacement engine air cleaner

filters varies considerably. Only high quality

Mopar® filters should be used.

Engine Air Cleaner Filter Inspection and

Replacement

Engine Air Cleaner Filter Removal
1. With a suitable tool, fully loosen fasteners on

the engine air cleaner filter cover.

2. Lift the engine air cleaner filter cover and

rotate hinge to access the air cleaner filter.

Engine Air Cleaner Filter Cover

3. Remove the engine air cleaner filter from the

housing assembly.

Engine Air Cleaner Filter Installation

NOTE:

Inspect and clean the housing assembly if signif

icant 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. Tighten the fasteners on the engine air cleaner

filter assembly.

ONDITIONER

AINTENANCE

For best possible performance, your 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.

1 — Engine Air Cleaner Filter Cover
2 — Fasteners

CAUTION!

Do not overtighten the engine air cleaner filter

cover lid screws or damage may result.

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

Information Book, for further warranty infor

mation.



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

341

Refrigerant Recovery And Recycling —

R–1234yf

R–1234yf Air Conditioning Refrigerant is a

Hydrofluoroolefin (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 manufacturer approved A/C system PAG

compressor oil, and refrigerants.

Cabin Air Filter Replacement

For the proper maintenance intervals

page 331.

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.

2. There is a glove compartment travel stop on

the right side of the glove compartment door.

Partially close the glove compartment door

and pull the travel stop toward you to release

the glove compartment travel stop.

Glove Compartment

3. 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.

Side Of Glove Compartment

4. Lower the glove compartment door to the floor.
5. Squeeze the retaining tabs together that

secures the cabin air filter cover to the HVAC

housing. Unhinge the filter cover on the right

side to fully remove the cover.

WARNING!

Do not remove the cabin air filter while the

vehicle is running, or while the ignition is in the

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 Stop
2 — Glove Compartment Door

1 — Glove Compartment Tension Tether
2 — Glove Compartment Door

342

SERVICING AND MAINTENANCE

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 into the HVAC housing.

8. Lift the glove compartment door up 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 travel stops are

fully engaged.

CCESSORY

RIVE

ELT

NSPECTION

When inspecting accessory drive belts, small

cracks that run across ribbed surface of belt from

rib to rib, are considered normal. These are 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)

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)

1 — Retaining Tabs

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.

SERVICING AND MAINTENANCE

343



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 with

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. Poor

performance of blades may be present with chat

tering, marks, water lines or wet spots. If any of

these conditions 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.

Front Wiper Blade Removal/Installation

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.

344

SERVICING AND MAINTENANCE

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.

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.

1 — Wiper
2 — Release Tab
3 — Wiper Arm

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

SERVICING AND MAINTENANCE

345

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 fully off the glass.

Wiper Blade In Folded Out Position

2. To remove the wiper blade from the wiper arm,

grab the bottom end of the wiper blade

nearest to wiper arm with your left hand. With

your right 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 from the receptacle on the end of the

wiper arm).

NOTE:



Resistance will be accompanied by an

audible snap.



The wiper arm does not stay in the service

up position.

3. Still grabbing the bottom end of the wiper

blade, move the wiper blade upward and away

from the wiper arm to disengage.

Wiper Blade Removed From Wiper Arm

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

glass.

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

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.

1 — Wiper Blade
2 — Wiper Arm

346

SERVICING AND MAINTENANCE

(Continued)

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 manufacturer's specifications, should

be obtained immediately.

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

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. To

avoid breathing CO

page 303.



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!

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.

SERVICING AND MAINTENANCE

347

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 331.

Selection Of Coolant

Refer to Engine Fluids And Lubricants

page 401.

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.



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 to use the same engine coolant (OAT

coolant conforming to MS.90032) throughout the

life of your vehicle.



When working near the radiator cooling fan,

disconnect the fan motor lead or turn the igni

tion to the OFF position. The fan is tempera

ture controlled and can start at any time the

ignition is in the ON position.

WARNING!

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