Infiniti QX80 (2021 year). Manual in english — page 26

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8-2

Do-it-yourself

When performing any inspection or main-
tenance work on your vehicle, always take
care to prevent serious accidental injury to
yourself or damage to the vehicle. The
following are general precautions which
should be closely observed.

WARNING

Park the vehicle on a level surface,
apply the parking brake securely and
block the wheels to prevent the
vehicle from moving. Move the shift
lever to P (Park).

Be sure the ignition switch is in the
OFF or LOCK position when per-
forming any parts replacement or
repairs.

Never connect or disconnect the
battery or any transistorized compo-
nent while the ignition switch is in the
ON position.

Never leave the engine or automatic
transmission related component har-
nesses disconnected while the igni-
tion switch is in the ON position.

If you must work with the engine
running, keep your hands, clothing,
hair and tools away from moving
fans, belts and any other moving

parts.

It is advisable to secure or remove
any loose clothing and remove any
jewelry, such as rings, watches, etc.
before working on your vehicle.

Always wear eye protection when-
ever you work on your vehicle.

If you must run the engine in an
enclosed space such as a garage, be
sure there is proper ventilation for
exhaust gases to escape.

Never get under the vehicle while it is
supported only by a jack. If it is
necessary to work under the vehicle,
support it with safety stands.

Keep smoking materials, flame and
sparks away from fuel tank and the
battery.

Your vehicle is equipped with an
automatic engine cooling fan. It may
come on at any time without warn-
ing, even if the ignition key is in the
OFF position and the engine is not
running. To avoid injury, always dis-
connect the negative battery cable
before working near the fan.

On gasoline engine models, the fuel
filter or fuel lines should be serviced
because the fuel lines are under high
pressure even when the engine is off.

It is recommended you visit an
INFINITI retailer for this service.

CAUTION

Do not work under the hood while the
engine is hot. Turn the engine off and
wait until it cools down.

Avoid direct contact with used en-
gine oil and coolant. Improperly dis-
posed engine oil, coolant, and/or
other vehicle fluids can damage the
environment. Always conform to lo-
cal regulations for disposal of vehicle
fluid.

This “8. Do-it-yourself” section gives in-
structions regarding only those items which
are relatively easy for an owner to perform.
A genuine INFINITI Service Manual is also
available. (See “Owner’s Manual/Service
Manual order information” (P.10-35).)
You should be aware that incomplete or
improper servicing may result in operating
difficulties or excessive emissions, and could
affect your warranty coverage.

If in doubt

about any servicing, it is recommended you
have it done by an INFINITI retailer.

MAINTENANCE PRECAUTIONS

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WAA0134X

VK56VD ENGINE MODEL

Window washer fluid reservoir

Fuse/fusible link holder

Engine oil dipstick

Power steering fluid reservoir

Engine oil filler cap

Brake fluid reservoir

Fuse/fusible link holder

Battery

Radiator filler cap

10. Engine coolant reservoir
11. Drive belts

12. Air cleaner

Do-it-yourself

8-3

ENGINE COMPARTMENT CHECK
LOCATIONS

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8-4

Do-it-yourself

The engine cooling system is filled at the
factory with a pre-diluted mixture of 50%
Genuine NISSAN Long Life Antifreeze/
Coolant (blue) and 50% water to provide
year-round anti-freeze and coolant protec-
tion. The antifreeze solution contains rust
and corrosion inhibitors. Additional engine
cooling system additives are not necessary.

WARNING

Never remove the radiator or coolant
reservoir cap when the engine is hot.
Wait until the engine and radiator
cool down. Serious burns could be
caused by high pressure fluid escap-
ing from the radiator. See precau-
tions in “If your vehicle overheats”
(P.6-14).

The radiator is equipped with a
pressure type radiator cap. To pre-
vent engine damage, use only a
genuine NISSAN radiator cap.

CAUTION

Never use any cooling system addi-
tives such as radiator sealer. Addi-
tives may clog the cooling system and
cause damage to the engine, trans-

mission and/or cooling system.

When adding or replacing coolant, be
sure to use only Genuine NISSAN
Long Life Antifreeze/Coolant (blue)
or equivalent. Genuine NISSAN Long
Life Antifreeze/Coolant (blue) is pre-
diluted to provide antifreeze protec-
tion to −34°F (−37°C). If additional
freeze protection is needed due to
weather where you operate your
vehicle, add Genuine NISSAN Long
Life Antifreeze/Coolant (blue) con-
centrate following the directions on
the container. If an equivalent cool-
ant other than Genuine NISSAN Long
Life Antifreeze/Coolant (blue) is
used, follow the coolant manufac-
turer’s instructions to maintain mini-
mum antifreeze protection to −34°F
(−37°C). The use of other types of
coolant solutions other than Genuine
NISSAN Long Life Antifreeze/Cool-
ant (blue) or equivalent may damage
the engine cooling system.

The life expectancy of the factory-fill
coolant is 105,000 miles (168,000
km) or 7 years. Mixing any other type
of coolant other than Genuine
NISSAN Long Life Antifreeze/Cool-
ant (blue) (or equivalent coolant),
including Genuine NISSAN Long Life
Antifreeze/Coolant (green), or the

use of non-distilled water will reduce
the life expectancy of the factory-fill
coolant. Refer to the "9. Mainte-
nance and schedules" section for
more details.

ENGINE COOLING SYSTEM

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JVM0744X

CHECKING ENGINE COOLANT
LEVEL

Check the coolant level

in the reservoir

when the engine is cold.

If the coolant level

is below MIN

, open the reservoir tank cap

and add coolant up to the MAX

level. If the

reservoir tank is empty, check the coolant
level in the radiator

when the engine is cold.

If there is insufficient coolant in the radiator,
fill the radiator with coolant up to the filler
opening and also add it to the reservoir tank
up to the MAX level

Tighten the cap securely after adding engine
coolant.

If the cooling system requires coolant fre-

quently, have it checked. It is recommended
you visit an INFINITI retailer for this
service.

CHANGING ENGINE COOLANT

It is recommended that major cooling system
repairs be performed by an INFINITI retailer.
The service procedures can be found in the
appropriate INFINITI Service Manual.

Improper servicing can result in reduced
heater performance and engine overheat-
ing.

WARNING

To avoid the danger of being scalded,
never change the coolant when the
engine is hot.

Never remove the radiator cap or
coolant reservoir cap when the en-
gine is hot. Serious burns could be
caused by high pressure fluid escap-
ing from the radiator.

Avoid direct skin contact with used
coolant. If skin contact is made, wash
thoroughly with soap or hand cleaner
as soon as possible.

Keep coolant out of reach of children
and pets.

Engine coolant must be disposed of prop-
erly. Check your local regulations.

Do-it-yourself

8-5

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8-6

Do-it-yourself

JVM0728X

CHECKING ENGINE OIL LEVEL

1. Park the vehicle on a level surface and

apply the parking brake.

2. Run the engine until it reaches operating

temperature.

3. Turn off the engine.

Wait more than 15

minutes for the oil to drain back into the
oil pan.

4. Remove the dipstick and wipe it clean.

Reinsert it all the way.

5. Remove the dipstick again and check the

oil level. It should be within the range

If the oil level is below

, remove the oil

filler cap and pour recommended oil
through the opening.

Do not overfill

6. Recheck oil level with the dipstick.

It is normal to add some oil between oil
maintenance intervals or during the break-
in period, depending on the severity of
operating conditions.

CAUTION

Oil level should be checked regularly.
Operating the engine with an insuffi-
cient amount of oil can damage the
engine, and such damage is not covered
by warranty.

CHANGING ENGINE OIL AND
FILTER

Vehicle set-up

1. Park the vehicle on a level surface and

apply the parking brake.

2. Run the engine until it reaches operating

temperature.

3. Turn the engine off and wait more than

15 minutes.

4. Raise and support the vehicle using a

suitable floor jack and safety jack stands.

Place the safety jack stands under the

vehicle jack-up points.

A suitable adapter should be attached

to the jack stand saddle.

5. Remove the engine undercover.

Remove the bolts that hold the under-

cover in place.

CAUTION

Make sure the correct lifting and sup-
port points are used to avoid vehicle
damage.

ENGINE OIL

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SDI2528

Engine oil and filter

1. Place a large drain pan under the drain

plug.

2. Remove the oil filler cap.
3. Remove the drain plug

with a wrench

and completely drain the oil.

CAUTION

Be careful not to burn yourself, as the
engine oil is hot.

Waste oil must be disposed of prop-

erly.

Check your local regulations.

4. (Perform steps 4 to 7 only when the

engine oil filter change is needed.)
Loosen the oil filter

with an oil filter

wrench. Remove the oil filter by turning it
by hand.

5. Wipe the engine oil filter mounting sur-

face with a clean rag.

CAUTION

Be sure to remove any old rubber gasket
remaining on the mounting surface of
the engine. Failure to do so could lead to
engine damage.

6. Coat the gasket on the new filter with

clean engine oil.

7. Screw in the oil filter clockwise until a

slight resistance is felt, then tighten
additionally more than 2/3 turn.

Oil filter tightening torque:

11 to 15 ft-lb
(15 to 21 N·m)

8. Clean and re-install the drain plug with a

new washer. Securely tighten the drain
plug with a wrench.

Drain plug tightening torque:

22 to 29 ft-lb
(29 to 39 N·m)

Do not use excessive force.

9. Refill engine with recommended oil and

install the oil filler cap securely.

CAUTION

The dipstick must be inserted in place to
prevent oil spillage from the dipstick
hole while filling the engine with oil.

See “Capacities and recommended
fluids/lubricants” (P.10-2) for drain and
refill capacity. The drain and refill capa-
city depends on the oil temperature and
drain time. Use these specifications for
reference only. Always use the dipstick
to determine the proper amount of oil in
the engine.

10. Start the engine and check for leakage

around the drain plug and the oil filter.
Correct as required.

11. Turn the engine off and wait more than

15 minutes. Check the oil level with the
dipstick. Add engine oil if necessary.

Do-it-yourself

8-7

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8-8

Do-it-yourself

After the operation

1. Install the engine undercover into posi-

tion as the following steps.
a. Pull the center of the small plastic clip

out.

b. Hold the engine undercover into posi-

tion.

c. Insert the clip through the undercover

into the hole in the frame, then push
the center of the clip in to lock the clip
in place.

d. Install the other bolts that hold the

undercover in place. Be careful not to
strip the bolts or over-tighten them.

2. Lower the vehicle carefully to the

ground.

3. Dispose of waste oil and filter properly.

WARNING

Prolonged and repeated contact with
used engine oil may cause skin cancer.

Try to avoid direct skin contact with
used oil. If skin contact is made, wash
thoroughly with soap or hand cleaner
as soon as possible.

Keep used engine oil out of reach of
children.

When checking or replacement is required,
we recommend an INFINITI retailer for
servicing.

CAUTION

It is recommended that you use only
Genuine NISSAN Matic S ATF. Do
not mix with other fluids.

Using automatic transmission fluid
other than Genuine NISSAN Matic S
ATF may cause deterioration in dri-
veability and automatic transmission
durability, and may damage the
automatic transmission. Damage
caused by the use of fluid other than
as recommended is not covered by
the INFINITI new vehicle limited
warranty.

SDI1765A

Check the fluid level in the reservoir.
The fluid level should be checked using the
HOT range ( : HOT MAX.,

: HOT MIN.) at

fluid temperatures of 122 to 176°F (50 to
80°C) or using the COLD range ( : COLD
MAX.,

: COLD MIN.) at fluid temperatures

of 32 to 86°F (0 to 30°C).
If the fluid is below the MIN line, add
Genuine NISSAN PSF or equivalent. Remove
the cap and fill through the opening.

CAUTION

Do not overfill.

AUTOMATIC TRANSMISSION
FLUID (ATF)

POWER STEERING FLUID

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Use Genuine NISSAN PSF or equiva-
lent.

For further brake fluid specification infor-
mation, see “Capacities and recommended
fluids/lubricants” (P.10-2).

WARNING

Use only new fluid from a sealed
container. Old, inferior or contami-
nated fluid may damage the brake
system. The use of improper fluids
can damage the brake system and
affect the vehicle’s stopping ability.

Be sure to clean the filler cap before
removing.

Brake fluid is poisonous and should
be stored carefully in marked con-
tainers out of the reach of children.

CAUTION

Do not add brake fluid with the
ignition switch in the ON position or
the engine running. Doing so could
make the brake fluid overfill when the
ignition switch is turned off.

Do not spill the fluid on painted
surfaces. This will damage the paint.
If fluid is spilled, wash the surface
with water.

SDI2513

BRAKE FLUID

Check the fluid level in the reservoir. If the
fluid is below the MIN line

or the brake

warning light comes on, add Genuine
NISSAN Super Heavy Duty Brake Fluid or
equivalent

DOT 3

fluid up to the MAX line

To add brake fluid:
1. Be sure the ignition switch is in the OFF

or LOCK position.

2. Depress and release the foot brake pedal

more than 40 times.

3. Open the reservoir filler cap and add

brake fluid up to the MAX line

. (See

“Capacities and recommended fluids/
lubricants” (P.10-2) for the recom-

Do-it-yourself

8-9

BRAKE FLUID

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8-10

Do-it-yourself

mended types of brake fluid.)

NOTE:

When the ignition switch is placed in the ON
position after adding brake fluid up to the
MAX line

in the reservoir, the brake fluid

decreases below the MAX line

. This is

normal.

If fluid must be added frequently, the system
should be checked. It is recommended you
visit an INFINITI retailer for this service.

SDI2517

WARNING

Antifreeze is poisonous and should be
stored carefully in marked containers
out of the reach of children.

Fill the window washer fluid reservoir per-
iodically. Add window washer fluid when the
low window washer fluid warning illumi-
nates.
To fill the window washer fluid reservoir, lift
the cap off the reservoir tank and pour the
window washer fluid into the tank opening.
Add a washer solvent to the washer for

better cleaning. In the winter season, add a
windshield washer antifreeze. Follow the
manufacturer’s instructions for the mixture
ratio.
Refill the reservoir more frequently when
driving conditions require an increased
amount of window washer fluid.
Recommended fluid is Genuine NISSAN
Windshield Washer Concentrate Cleaner &
Antifreeze or equivalent.

CAUTION

Do not substitute engine anti-freeze
coolant for window washer solution.
This may result in damage to the
paint.

Do not fill the window washer re-
servoir tank with washer fluid con-
centrates at full strength. Some
methyl alcohol based washer fluid
concentrates may permanently stain
the grille if spilled while filling the
window washer reservoir tank.

Pre-mix washer fluid concentrates
with water to the manufacturer’s
recommended levels before pouring
the fluid into the window washer
reservoir tank. Do not use the win-
dow washer reservoir tank to mix the

WINDOW WASHER FLUID

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washer fluid concentrate and water.

Keep the battery surface clean and dry.

Clean the battery with a solution of
baking soda and water.

Make certain the terminal connections

are clean and securely tightened.

If the vehicle is not to be used for 30 days

or longer, disconnect the negative (−)
battery terminal cable to prevent dis-
charging it.

NOTE:

Care should be taken to avoid situations
that can lead to potential battery discharge
and potential no-start conditions such as:

Installation or extended use of electro-
nic accessories that consume battery
power when the engine is not running
(Phone chargers, GPS, DVD players,
etc.)

Vehicle is not driven regularly and/or
only driven short distances.

In these cases, the battery may need to be
charged to maintain battery health.

WARNING

Do not expose the battery to flames
or electrical sparks. Hydrogen gas
generated by the battery is explosive.
Do not allow battery fluid to contact
your skin, eyes, fabrics, or painted

surfaces. After touching a battery or
battery cap, do not touch or rub your
eyes. Thoroughly wash your hands. If
the acid contacts your eyes, skin or
clothing, immediately flush with
water for at least 15 minutes and
seek medical attention.

Do not operate the vehicle if the fluid
in the battery is low. Low battery
fluid can cause a higher load on the
battery which can generate heat,
reduce battery life, and in some cases
lead to an explosion.

When working on or near a battery,
always wear suitable eye protection
and remove all jewelry.

Battery posts, terminals and related
accessories contain lead and lead
compounds. Wash hands after hand-
ling.

Keep the battery out of the reach of
children.

Do-it-yourself

8-11

BATTERY

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8-12

Do-it-yourself

DI0137MA

Check the fluid level in each cell (Remove the
battery cover if it is necessary). It should be
between the UPPER LEVEL

and LOWER

LEVEL

lines.

If it is necessary to add fluid, add only
distilled water to bring the level to the
indicator in each filler opening.

Do not

overfill.

SDI1480C

1. Remove the cell plugs

2. Add distilled water up to the UPPER

LEVEL

line.

If the side of the battery is not clear,
check the distilled water level by looking
directly above the cell; the condition
indicates OK and the conditions

needs

more to be added.

3. Tighten cell plugs

Vehicles operated in high temperatures or
under severe conditions require frequent
checks of the battery fluid level.

JUMP STARTING

If jump starting is necessary, see “Jump
starting” (P.6-11). If the engine does not
start by jump starting, the battery may have
to be replaced. It is recommended you visit
an INFINITI retailer for this service.

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CAUTION

Do not ground accessories directly to
the battery terminal. Doing so will
bypass the variable voltage control
system and the vehicle battery may
not charge completely.

Use electrical accessories with the
engine running to avoid discharging
the vehicle battery.

The variable voltage control system mea-
sures the amount of electrical discharge
from the battery and controls voltage gen-
erated by the generator.

SDI2533

Power steering fluid pump

Water pump

Alternator

Crankshaft pulley

Air conditioner compressor

WARNING

Be sure the ignition switch is in the OFF
or LOCK position before servicing drive
belts. The engine could rotate unexpect-
edly.

1. Visually inspect each belt for signs of

unusual wear, cuts, fraying or looseness.

If the belt is in poor condition or loose,
have it replaced or adjusted. It is recom-
mended you visit an INFINITI retailer for
this service.

2. Have the belts checked regularly for

condition and tension in accordance with
the maintenance schedule shown in the
“9. Maintenance and schedules” section.

Do-it-yourself

8-13

VARIABLE VOLTAGE CONTROL SYSTEM

DRIVE BELTS

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8-14

Do-it-yourself

WARNING

Be sure the engine and the ignition
switch are off and that the parking
brake is engaged securely.

CAUTION

Be sure to use the correct socket to
remove the spark plugs. An incorrect
socket can damage the spark plugs.

SDI2020

REPLACING SPARK PLUGS

If replacement is required, it is recommended
you visit an INFINITI retailer for this service.

Iridium-tipped spark plugs

It is not necessary to replace the iridium-
tipped spark plugs as frequently as the
conventional type spark plugs since they will
last much longer. Follow the maintenance
schedule shown in the “9. Maintenance and
schedules” section, but do not reuse them by
cleaning or regapping.

Always replace spark plugs with recom-
mended or equivalent ones.

SDI2515

To remove the filter, release the lock pins
and pull the unit upward

The filter element should not be cleaned and
reused. Replace it according to the main-
tenance intervals. See “9. Maintenance and
schedules” section for maintenance inter-
vals. When replacing the filter, wipe the
inside of the air cleaner housing and the
cover with a damp cloth.

WARNING

Operating the engine with the air
cleaner removed can cause you or
others to be burned. The air cleaner

SPARK PLUGS

AIR CLEANER

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not only cleans the air, it stops flame
if the engine backfires. If it isn’t
there, and the engine backfires, you
could be burned. Do not drive with
the air cleaner removed, and be care-
ful when working on the engine with
the air cleaner removed.

Never pour fuel into the throttle body
or attempt to start the engine with
the air cleaner removed. Doing so
could result in serious injury.

CLEANING

If your windshield is not clear after using the
windshield washer or if a wiper blade
chatters when running, wax or other materi-
al may be on the blade or windshield.
Clean the outside of the windshield with a
washer solution or a mild detergent. Your
windshield is clean if beads do not form
when rinsing with clear water.
Clean each blade by wiping it with a cloth
soaked in a washer solution or a mild
detergent. Then rinse the blade with clear
water. If your windshield is still not clear
after cleaning the blades and using the
wiper, replace the blades.
Worn windshield wiper blades can damage
the windshield and impair driver vision.

When a washer nozzle is clogged

It is recommended you see an INFINITI
retailer if a washer nozzle is clogged or any
malfunction occurs. Do not attempt to clean
the nozzle using a needle or a pin. Doing so
may damage the nozzle.

Do-it-yourself

8-15

WINDSHIELD WIPER BLADES

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8-16

Do-it-yourself

SDI2048

REPLACING

Replace the wiper blades if they are worn.
1. Pull the wiper arm.
2. Push the release tab

, and then move

the wiper blade down the wiper arm
while pushing the release tab to remove.

3. Insert the new wiper blade onto the

wiper arm until a click sounds.

4. Rotate the wiper blade so the dimple is in

the groove.

CAUTION

After wiper blade replacement, re-
turn the wiper arm to its original
position;

otherwise it may be damaged when
the hood is opened.

Make sure the wiper blades contact
the glass; otherwise the arm may be
damaged from wind pressure.

It is recommended you visit an INFINITI
retailer if checking or replacement is re-
quired.

REAR WINDOW WIPER BLADES

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