2020 INFINITI QX60 spark plugs replace

8 Do-it-yourself
Maintenance precautions.........................8-2
Engine compartment check locations ..............8-3
Engine cooling system ........................... 8-4
Checking engine coolant level ..................8-5
Changing engine coolant ......................8-5
Engine oil ........................................8-6
Checking engine oil level .......................8-6
Changing engine oil and oil filter ...............8-6
Continuously Variable Transmission (CVT) fluid . . 8-10
Power Steering Fluid (PSF) .....................8-10
Brake fluid ...................................... 8-11
Windshield-washer fluid ......................... 8-11
Windshield-washer fluid reservoir .............8-11
Battery ........................................ 8-13
Jump starting ............................... 8-14
Drive belt ...................................... 8-15
Spark plugs .................................... 8-15
Replacing spark plugs ....................... 8-15
Air cleaner ..................................... 8-16
In-cabin microfilter .......................... 8-16Windshield wiper blades
........................ 8-17
Cleaning .................................... 8-17
Replacing ................................... 8-17
Brakes ......................................... 8-19
Fuses .......................................... 8-19
Engine compartment ........................ 8-20
Passenger compartment .....................8-21
Battery replacement ............................ 8-22
INFINITI Intelligent Key ......................8-22
Lights ......................................... 8-24
Headlights .................................. 8-24
Fog lights ................................... 8-24
Exterior and interior lights ...................8-24
Wheels and tires ............................... 8-26
Tire pressure ................................ 8-26
Tire labeling ................................. 8-30
Types of tires ............................... 8-33
Tire chains .................................. 8-34
Changing wheels

and tires ................... 8-35

1. Drive belt automatic tensioner pulley
2. Generator pulley
3. Air conditioner compressor pulley
4 Crankshaft pulley
WARNING
Be sure the ignition key is in the OFF or
LOCK position before servicing drive belt.
The engine could rotate unexpectedly.1. Visually inspect the belt for signs of un- usual wear, cuts, fraying or looseness. If
the belt is in poor condition or is loose,
have it replaced or adjusted. It is recom-
mended that you visit an INFINITI re-
tailer for this service. 2. Have the belt checked regularly for con-
dition and tension in accordance with
the maintenance schedule found in your
"Maintenance and schedules" section of
this manual.
REPLACING SPARK PLUGS
Iridium-tipped spark plugs
It is not necessary to replace iridium-tipped
Aspark plugs as frequently as conventional
type spark plugs because they last much lon-
ger. Follow the maintenance log shown in the
"Maintenance and schedules" section of this
manual. Do not service iridium-tipped spark
plugs by cleaning or regapping.
∙ Always replace spark plugs with recom-
mended or equivalent ones.
LDI2099SDI1895
DRIVE BELT SPARK PLUGS
Do-it-yourself8-15

WARNING
Be sure the engine and 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.
If replacement is required, it is recommended
that you visit an INFINITI retailer for this
service.
WARNING
∙ Operating the engine with the air cleaner filter off can cause you or others to be
burned. The air cleaner filter not only
cleans the intake air, it also stops the
flame if the engine backfires. If the air
cleaner is not installed and the engine
backfires, you could be burned. Never
drive with the air cleaner filter off. Be
cautious working on the engine when the
air cleaner is off. ∙ 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.
To remove the filter from the air cleaner, push
the tabs
Aand pull the cover upward.
The viscous paper type filter element should
not be cleaned and reused. Replace it accord-
ing to the maintenance log shown in the
“Maintenance and schedules” section of this
manual.
When replacing the air filter, wipe the inside
of the air cleaner housing and the cover with
a damp cloth.
NOTE:
After installing a new air cleaner filter, make
sure the air cleaner cover is seated in the
housing and latch the clips
A.
IN-CABIN MICROFILTER
The in-cabin microfilter restricts the entry of
airborne dust and pollen particles and re-
duces some objectionable outside odors. The
filter is located behind the glove box. Refer to
the "Maintenance and schedules" section of
this manual for change intervals.
LDI3279
AIR CLEANER
8-16Do-it-yourself

Engine coolant*:Replace coolant at the
specified interval. When adding or replacing
coolant, be sure to use only Genuine NISSAN
Long Life Antifreeze/Coolant (blue) or
equivalent with the proper mixture. (For ad-
ditional information on the proper mixture for
your area, refer to “Engine cooling system” in
the “Do-it-yourself” section of this manual.)
NOTE: Mixing any other type of coolant or
the use of non-distilled water may reduce
the recommended service interval of the
coolant.
Engine oil and oil filter: Replace engine oil
and oil filter at the specified intervals. For
recommended oil grade and viscosity refer to
“Recommended fluids/lubricants and capaci-
ties” in the “Technical and consumer informa-
tion” section of this manual.
Engine valve clearance*: Inspect only if valve
noise increases. Adjust valve clearance if nec-
essary.
Evaporative emissions control vapor lines*:
Check vapor lines for leaks or looseness.
Tighten connections or replace parts as nec-
essary. Fuel lines*:
Check the fuel hoses, piping and
connections for leaks, looseness, or deterio-
ration. Tighten connections or replace parts
as necessary.
Spark plugs: Replace at specified intervals.
Install new plugs of the same type as origi-
nally equipped.
CHASSIS AND BODY
MAINTENANCE:
Brake lines and cables: Visually inspect for
proper installation. Check for chafing, cracks,
deterioration, and signs of leaking. Replace
any deteriorated or damaged parts immedi-
ately.
Brake pads and rotors: Check for wear, de-
terioration and fluid leaks. Replace any dete-
riorated or damaged parts immediately.
Exhaust system: Visually inspect the exhaust
pipes, muffler and hangers for leaks, cracks,
deterioration, and damage. Tighten connec-
tions or replace parts as necessary.
In-cabin microfilter: Replace at specified in-
tervals. When driving for prolonged periods in
dusty conditions, replace the filter more fre-
quently. Propeller shaft(s):
Check for damage, loose-
ness, and grease leakage. (AWD)
Steering gear and linkage, axle and suspen-
sion parts, drive shaft boots: Check for dam-
age, looseness, and leakage of oil or grease.
Under severe driving conditions, inspect more
frequently.
Tire rotation: Tires should be rotated every
7,500 miles (12,000 km) according to the
instructions under “Explanation of general
maintenance items” in this section. When ro-
tating tires, check for damage and uneven
wear. Replace if necessary.
Transmission fluid/oil, differential oil and
transfer case oil: Visually inspect for signs of
leakage at specified intervals.
Replace at specified intervals.
9-6Maintenance and schedules

The following tables show the standard
maintenance schedule. Depending upon
weather and atmospheric conditions, varying
road surfaces, individual driving habits and
vehicle usage, additional or more frequentmaintenance may be required.
After
120,000 miles (192,000 km)/96 months,
continue maintenance at the same
mileage/time interval.
STANDARD MAINTENANCEAbbreviations: I = Inspect and correct or replace as necessary, R = Replace
MAINTENANCE OPERATION
Perform at number of miles, kilometers or months, whichever comes first. Miles x
1,000 (km x
1,000)
Months MAINTENANCE INTERVAL
7.5
(12) 6 15
(24) 12 22.5
(36) 18 30
(48) 24 37.5
(60) 30 45
(72) 36 52.5
(84) 42 60
(96) 48 67.5
(108) 54 75
(120) 60 82.5
(132) 66 90
(144) 72 97.5
(156) 78 105
(168) 84 112.5
(180) 90 120
(192) 96
Air cleaner filter NOTE (1)RR RR
Brake fluid RR R R
Brake lines and cables IIII IIII
Brake pads and rotors IIIIIIII
CVT fluid NOTE (2)IIII IIII
Drive belts NOTE (3) I*I*I*I*I*
Engine coolant* NOTE (4)(5)
Engine oil & oil filter  RRRRRRRRRRRRRRRR
EVAP vapor lines & Fuel lines I*I* I*I*
Exhaust system II I I
Fuel filter NOTE (6)
Intelligent Key battery IR R RR
In-cabin microfilter RR R R RRRR
Intake & exhaust valve clearance* NOTE (7)
Propeller shaft (AWD models) & drive shaft boots IIIIIIII
Spark plugs NOTE (8)Replace every 105,000 miles (168,000 km)
Steering gear & linkage, axle & suspension parts II I I
Tire rotation NOTE (9)
Transfer fluid & differential gear oil NOTE (10)IIII IIII
STANDARD MAINTENANCE
9-8Maintenance and schedules

Automatic drive positioner....3-37,3-39
Frontseats..................1-2
Seats/floor mats ..............7-5,7-6
Security indicator light ............2-14
Security system (INFINITI vehicle immobilizer system),
engine start ..........2-34,3-4,5-17
Security systems Vehicle security system ..........2-32
Self-adjusting brakes .............8-19
Service manual order form .........10-34
Servicing air conditioner ...........4-44
Spark plug replacement ............8-15
Spark plugs ...................8-15
Specifications .................10-8
Speedometer ...................2-5
Speedometer and odometer ..........2-4
SRS warning label ...............1-68
Stability control ...............5-140
Standard maintenance ..........9-8,9-8
Starting Before starting the engine ........5-17
Jump starting ............6-11,8-14
Precautions when starting
anddriving ..............5-4,5-11
Push starting ................6-13
Starting the engine ............5-17
Starting the engine ..............5-17
Startupdisplay.................2-17
Steering Power steering fluid ............8-10
Power steering system .........5-137
Steering wheel .................3-31
Stoplight....................8-24 Storage.....................2-56
Storagebin...................2-61
Storagetray ..................2-57
Sunglasses case
................2-59
Sunglasses holder ...............2-59
Sunroof ..................2-67,7-4
Sunroof (see Moonroof) ...........2-66
Sun visors ....................3-32
Supplemental air bag warning labels ....1-68
Supplemental air bag warning
light....................1-69,2-12
Supplemental front impact air bag
system......................1-57
Supplemental restraint system Informationandwarninglabels.....1-68
Precautions on supplemental
restraint system ..............1-50
Supplemental restraint system
(Supplemental air bag system) ........1-50
Switch Autolight switch ..............2-40
Automatic power window switch ....2-65
Fog light switch ..............2-45
Hazard warning flasher switch ......6-2
Headlight and turn signal switch ....2-39
Headlight control switch .........2-39
Instrument brightness control ......2-44
Power door lock switch ..........3-6
Power inverter switch ...........2-52
Rear window and outside mirror
defroster switch ..............2-39
Rear window wiper and washer
switches ...................2-38
Turn signal switch .............2-44 T
Tachometer ...................2-6
Temperature gauge Engine coolant temperature gauge ....2
-6
Theft (INFINITI vehicle immobilizer system),
engine start ..........2-34, 3-4, 5-17
Three-way catalyst ...............5-4
Tire Flat tire ....................6-3
Spare tire ...............6-5,8-38
Tire and Loading Information label . .10-12
Tire chains ................. 8-34
Tirepressure............ 8-26, 8-26
Tirerotation ................8-35
Types of tires ................8-33
Uniform tire quality grading ......10-30
Wheels and tires .............. 8-26
Wheel/tire size ...............10-9
Tire pressure Low tire pressure warning light .....2-10
Tire Pressure Monitoring System
(TPMS) ......................5-5
Top tether strap child restraint .......1-33
Towing 4-wheel drive models ...........6-16
Flattowing................10-29
Towing load/specification .......10-21
Towtrucktowing............. 6-14
Trailertowing...............10-17
Towing a trailer ................10-17
11-6