spark plugs replace NISSAN MAXIMA 2021 Owner´s Manual

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) .......................8-11
Brake fluid ....................................... 8-11
Windshield-washer fluid ........................8-12
Windshield-washer fluid reservoir ...........8-12
Battery......................................... 8-13
Jump starting ............................... 8-15
Drive belt ....................................... 8-15
Spark plugs .................................... 8-16
Replacing spark plugs .......................8-16
Air cleaner ..................................... 8-16
In-cabin microfilter .......................... 8-17Windshield wiper blades
........................8-17
Cleaning .................................... 8-17
Replacing ................................... 8-17
Brakes ......................................... 8-18
Fuses .......................................... 8-19
Engine compartment ....................... 8-19
Passenger compartment ...................8-20
Battery replacement ........................... 8-21
NISSAN Intelligent Key® ......................8-22
Lights .......................................... 8-23
Headlights .................................. 8-23
Front park/turn signal/side marker
light ......................................... 8-23
Fog lights (if so equipped) ...................8-23
Exterior and interior lights ...................8-24
Wheels and tires ............................... 8-26
Tire pressure ................................ 8-26
Tire labeling .................................
8-30
T

ypes of tires ................................ 8-33
Tire chains .................................. 8-34
Changing wheels and tires ..................8-34

REPLACING SPARK PLUGS
Iridium-tipped spark plugs
It is not necessary to replace iridium-
tipped
OAspark plugs as frequently as con-
ventional type spark plugs because they
last much longer. Follow the maintenance
log shown in the “Maintenance and sched-
ules” section of this manual. Do not service
iridium-tipped spark plugs by cleaning or
regapping.
• Always replace spark plugs with rec-
ommended or equivalent ones.
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 re-
move the spark plugs. An incorrect
socket can damage the spark plugs.
If replacement is required, it is recom-
mended that you visit a NISSAN dealer for
this service. The air cleaner filter should not be cleaned
and reused. Replace it according to the
maintenance log shown in the “Mainte-
nance and schedules” section of this
manual. When replacing the filter, wipe the
inside of the air cleaner filter housing and
the cover with a damp cloth.
To remove the air cleaner filter:
• Unlatch the clips
OAand move the air
cleaner cover upward.
• Remove the air cleaner filter.
• Wipe the inside of the air cleaner filter housing and cover with a damp cloth.
SDI1895LDI2756
SPARK PLUGS AIR CLEANER
8-16Do-it-yourself

NOTE:
NISSAN does not advocate the use of
non-OEM approved af termarket flush-
ing systems and strongly advises
against performing these services on a
NISSAN product. Many of the af termar-
ket flushing systems use non-OEM ap-
proved chemicals or solvents, the use of
which has not been validated by NISSAN.
For recommended fuel, lubricants, fluids,
grease, and refrigerant, see “Recom-
mended fluids/lubricants and capaci-
ties” (P. 10-2).
EMISSION CONTROL SYSTEM
MAINTENANCE:
Drive belts*:Check engine drive belts for
wear, fraying or cracking and for proper
tension. Replace any damaged drive belts.
Engine air filter: Replace at specified inter-
vals. When driving for prolonged periods in
dusty conditions, check/replace the filter
more frequently.
Engine coolant*: Replace coolant at the
specified interval. When adding or replac-
ing coolant, be sure to use only Genuine
NISSAN Long Life Antifreeze/Coolant (blue)
or equivalent with the proper mixture. (For additional information on the proper mix-
ture for your area, see “Engine cooling sys-
tem” (P. 8-5.)
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, see
“Recommended fluids/lubricants and ca-
pacities” (P. 10-2).
Fuel lines*: Check the fuel hoses, piping
and connections for leaks, looseness, or
deterioration. Tighten connections or re-
place 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 immediately. 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 ex-
haust pipes, muffler and hangers for leaks,
cracks, deterioration, and damage. Tighten
connections or replace parts as necessary.
In-cabin microfilter: Replace at specified
intervals. When driving for prolonged peri-
ods in dusty conditions, replace the filter
more frequently.
Steering gear and linkage, axle and sus-
pension parts, drive shaf t boots: Check
for damage, looseness, and leakage of oil
or grease. Under severe driving conditions,
inspect more frequently.
Tire rotation: Rotate tires at the specified
interval shown in the maintenance sched-
ule. When rotating tires, check for damage
and uneven wear. Replace if necessary.
Transmission fluid/oil: Visually inspect for
signs of leakage at specified intervals.
If using a car-top carrier, or driving on rough
or muddy roads, replace the CVT fluid every
60,000 miles (96,000 km) or request the
dealer to inspect the fluid deterioration data
using a CONSULT. If the deterioration data is
more than 210000, replace the CVT fluid.
9-6Maintenance and schedules

105,000 miles/(168,000 km)/
84 months
Perform at number of miles, kilometers or
months, whichever comes first.
Standard maintenance:
Inspections:
• Brake lines and cables
• Brake pads and rotors
• CVT transmission fluid
• Engine drive belts*
• Front drive shaf t boots
• Horn, lights, signals, wipers, rear hatch/hood lif t supports
• All fluids inspected (engine, wiper, brake, power steering, coolant)
• Hose inspections
• Engine air filter
• Suspension components (shocks, sub- frame, tie rods)
• Battery terminals and cables, battery test
• Tire pressure, treadwear and depth Essential:
• Replace engine oil & filter
• Replace in-cabin microfilter
• Replace spark plugs (1)(2)
• Replace engine coolant * (3)
• Tire rotation
Severe maintenance:
Not Applicable. Proceed to next interval
(1) Replace spark plug when the plug gap
exceeds 0.053 in (1.35 mm) even if within
specified replacement mileage.
(2) Performed based on the number of
miles only.
(3) First replacement interval is 105,000
miles (168,000 km) or 84 months. Af ter first
replacement, replace every 75,000 miles
(120,000 km) or 60 months.
* Maintenance items and intervals with “*”
are recommended by NISSAN for reliable
vehicle operation. The owner need not per-
form such maintenance in order to main-
tain the emission warranty or manufac-
turer recall liability. Other maintenance
items and intervals are required.
105,000 miles/(168,000 km)/
126 months
Perform at number of miles, kilometers or
months, whichever comes first.
Standard maintenance:
Not Applicable. Proceed to next interval
Severe maintenance:
Inspections:
• Brake pads & rotors
• Exhaust system
• Front drive shaf t boots
• Steering gear & linkage
• Axle & suspension parts
• Horn, lights, signals, wipers, rear hatch/
hood lif t supports
• All fluids inspected (engine, wiper, brake, power steering, coolant)
• Hose inspections
• Engine air filter
• Suspension components (shocks, sub- frame, tie rods)
• Battery terminals and cables, battery test
• Tire pressure, treadwear and depth
Essential:
• Replace engine oil & filter
9-22Maintenance and schedules

SeatMemory seat.............3-30, 3-32Seat adjustmentFront power seat adjustment.......1-3Seat beltChild safety.................1-20Infants and small children.....1-20,1-21Injured person................1-14Larger children...............1-21Precautions on seat belt usage.....1-11Pregnant women..............1-14Seat belt extenders............1-19Seat belt maintenance..........1-19Seat belts................1-11,7-8Shoulder belt height adjustment. . . .1-18Three-point type with retractor.....1-15Seat belt extenders..............1-19Seat belt warning light.........1-14,2-10Seatback pockets...............2-61SeatsAdjustment..................1-2Armrests....................1-7Front seats..................1-2Heated seats............2-52, 2-54Rear seat.................. .1-5Security indicator light............2-10Security system (NISSAN Vehicle Immobilizer
System), engine start.........2-41, 5-14Security systems
Vehicle security system.........2-39Self-adjusting brakes.............8-18Service manual order form........10-22Servicing air conditioner...........4-32
Shif tingContinuously Variable Transmission
(CVT)
.....................5-17Shoulder belt height adjustment......1-18Spark plug replacement...........8-16Spark plugs...................8-16Specifications................ .10-8Speedometer................. .2-4Spotlights (See map light)..........2-72SRS warning label...............1-64Stability control................5-113Standard maintenance............9-8Starting
Before starting the engine........5-14Jump starting.............6-9, 8-15Precautions when starting and
driving.................... .5-4Push starting................6-11Starting the engine............5-14Starting the engine..............5-14Steering
Heated steering wheel..........2-56Power steering fluid............8-11Power steering system.........5-112Steering wheel.................3-24Stop light....................8-24Storage.................... .2-61Storage tray..................2-62Sun visors....................3-26Sunglasses case...............2-63Sunglasses holder..............2-63Sunroof..................2-68, 7-7Supplemental air bag warning
light................... .1-64, 2-10
Supplemental front impact air bag
system..................... .1-51Supplemental restraint system
Information and warning labels.....1-64Precautions on supplemental restraint
system................... .1-43Supplemental restraint system
(Supplemental air bag system).......1-43Switch
Autolight switch..............2-46Automatic power window switch. . .2-67Fog light switch...............2-51Hazard warning flasher switch......6-2Headlight and turn signal switch. . . .2-45Headlight control switch.........2-45Instrument brightness control.....2-50Power door lock switch..........3-6Rear window and outside mirror defroster
switch................... .2-45Turn signal switch.............2-51
T
Tachometer...................2-5Temperature gauge
Engine coolant temperature gauge. . .2-6Thef t (NISSAN Vehicle Immobilizer System),
engine start...............2-41, 5-14Three-way catalyst...............5-4TireFlat tire................. .6-3, 6-4Spare tire................6-5, 8-37Tire and Loading Information label. .10-12
11-6