2021 NISSAN TITAN spark plugs replace

8 Do-it-yourself
Maintenance precautions.......................8-2
Engine compartment check locations ...........8-3
Engine cooling system ..........................8-5
Checking engine coolant level ................8-6
Changing engine coolant ....................8-6
Engine oil .......................................8-7
Checking engine oil level .....................8-7
Changing engine oil and oil filter ..............8-7
Automatic Transmission Fluid (ATF) .............8-13
Power Steering Fluid (PSF) ......................8-13
Brake fluid ...................................... 8-14
Windshield-washer fluid ........................8-15
Windshield-washer fluid reservoir ...........8-15
Battery......................................... 8-16
Jump starting ............................... 8-18
Variable voltage control system
(if so equipped) ................................. 8-19
Drive belt ....................................... 8-19
Spark plugs .................................... 8-20
Replacing spark plugs .......................8-20
Air cleaner ..................................... 8-21
In-cabin microfilter .......................... 8-21Windshield wiper blades
........................8-22
Cleaning .................................... 8-22
Replacing ................................... 8-22
Brakes ......................................... 8-23
Fuses .......................................... 8-24
Engine compartment .......................8-24
Passenger compartment ...................8-25
Battery replacement ........................... 8-27
NISSAN Intelligent Key® ......................8-27
Lights .......................................... 8-29
Headlights .................................. 8-29
Fog lights (if so equipped) ...................8-29
Daytime Running Light (DRL)
(if so equipped) .............................. 8-30
Exterior and interior lights ...................8-32
Wheels and tires ............................... 8-35
Tire pressure ................................
8-35
Tir

e labeling ................................. 8-39
Types of tires ................................ 8-41
Tire chains .................................. 8-42
Changing wheels and tires ..................8-43

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 a NISSAN dealer
for this service.
2. Have the belt checked regularly for con- dition and tension in accordance with
the maintenance schedule. For addi-
tional information, see the "Mainte-
nance and schedules" section of this
manual.
REPLACING SPARK PLUGS
Iridium-tipped spark plugs
It is not necessary to replace iridium-
tipped spark 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.
LDI2972
SPARK PLUGS
8-20Do-it-yourself

Essentials:
• Replace engine oil & filter
• Replace brake fluid
• Replace differential gear oil
• Lubricate steering stopper cap (XD mod-els only)
• Replace transfer case oil (4WD models)105,000 miles/(168,000 km)/
84 months
Perform at number of miles, kilometers or
months, whichever comes first.
Standard maintenance:
Inspections:
• Automatic transmission fluid (1)
• Brake lines and cables
• Brake pads and rotors
• Engine drive belt *
• Propeller shaf t
• Differential gear oil
• Transfer case oil (4WD models)
• Drive shaf t boots (4WD models)
• 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 Essentials:
• Replace engine coolant * (2)
• Replace engine oil & filter
• Replace in-cabin microfilter
• Replace spark plugs
• Tire rotation
Severe maintenance:
Not Applicable. Proceed to next interval
(1) Request the dealer to inspect the fluid
deterioration data using a CONSULT. If the
deterioration data is more than 77000, re-
place the AT fluid.
(2) 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.
9-28Maintenance and schedules

Registering a vehicle in another
country.....................10-17Remote Engine Start..........3-22,5-17Reporting safety defects (US only). . . .10-58
S
Safety
Child safety rear door lock.........3-9Child seat
belts........1-28, 1-34, 1-40, 1-45, 1-49Reporting safety defects (US only). .10-58Seat
Memory seat............3-40, 3-42Seat adjustmentFront manual seat adjustment......1-4Front power seat adjustment.......1-6Seat beltChild safety.................1-25Infants and small children........1-26Injured person................1-19Larger children...............1-26Precautions on seat belt usage.....1-16Pregnant women..............1-19Rear center seat belt...........1-23Seat belt extenders............1-24Seat belt maintenance..........1-24Seat belts................1-16,7-7Shoulder belt height adjustment. . . .1-24Three-point type with retractor.....1-19Seat belt extenders..............1-24Seat belt warning light............2-16Seatback pockets...............2-70
SeatsAdjustment..................1-2Front seats..................1-2Heated seats................2-54Manual front seat adjustment......1-4Rear seat.................. .1-4Security indicator light............2-16Security system (NISSAN Vehicle Immobilizer
System), engine start.........2-38, 5-16Security systems
Vehicle security system..........2-37Self-adjusting brakes.............8-23Service manual order form........10-60Servicing air conditioner...........4-42Shif tingAutomatic transmission.........5-20Shoulder belt height adjustment......1-24Side air bag system (See supplemental side
air bag, curtain and rollover air bag
systems)
.....................1-78Snow plow................. .10-56Spark plug replacement...........8-20Spark plugs...................8-20Specifications.................10-9Speedometer..................2-7Speedometer and odometer........2-6SRS warning label...............1-82Stability control................5-118Standard maintenance............9-8Starting
Before starting the engine........5-16Jump starting............6-10,8-18Precautions when starting and
driving................. .5-4, 5-10
Push starting................6-12Starting the engine............5-16Starting the engine..............5-16Steering
Power steering fluid............8-13Power steering system.........5-115Steering wheel.................3-28Stop light................... .8-32Storage.................... .2-69Storage tray..................2-73Sun visors....................3-30Sunglasses case................2-75Sunglasses holder..............2-75Sunroof..................2-85, 7-5Supplemental air bag warning labels. . .1-82Supplemental air bag warning
light................... .1-82, 2-16Supplemental front impact air bag
system..................1-60, 1-75Supplemental restraint system
Information and warning labels.....1-82Precautions on supplemental restraint
system................ .1-53, 1-68Supplemental restraint system
(Supplemental air bag system).......1-53Switch
Autolight switch..............2-44Automatic power window switch. . .2-83Electronic locking rear differential (E-Lock)
system switch...............2-59Fog light switch...............2-51Hazard warning flasher switch......6-2Headlight aiming control.........2-49Headlight and turn signal switch. . . .2-43
11-6