2021 NISSAN FRONTIER check oil

brake needs adjustment, it is recom-
mended that you visit a NISSAN dealer for
this service.
Seats:
Check seat position controls such as
seat adjusters, seatback recliner, etc., to en-
sure they operate smoothly and all latches
lock securely in every position. Check that the
head restraints/headrests move up and
down smoothly and the locks (if so equipped)
hold securely in all latched positions.
Seat belts: Check that all parts of the seat
belt system (for example, buckles, anchors,
adjusters and retractors) operate properly
and smoothly, and are installed securely.
Check the belt webbing for cuts, fraying,
wear or damage.
Steering wheel: Check for changes in the
steering system, such as excessive free
play, hard steering or strange noises.
Warning lights and chimes: Make sure all
warning lights and chimes are operating
properly.
Windshield defroster: Check that the air
comes out of the defroster outlets properly
and in sufficient quantity when operating
the heater or air conditioner.
Windshield wiper and washer*: Check
that the wipers and washer operate prop-
erly and that the wipers do not streak.
Under the hood and vehicle
The maintenance items listed here should
be checked periodically (for example, each
time you check the engine oil or refuel).
Battery (for maintenance free batter-
ies)*: This vehicle is equipped with a sealed
maintenance free battery. It is recom-
mended that you visit a NISSAN dealer for
service.
NOTE:
Care should be taken to avoid situations
that can lead to potential battery dis-
charge and potential no-start conditions
such as:
1. Installation or extended use of elec-
tronic accessories that consume bat-
tery power when the engine is not run-
ning (Phone chargers, GPS, DVD
players, etc.).
2. 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.
Brake fluid level*: Make sure that the fluid
level is between the MAX and MIN lines on
the reservoir. Engine coolant level*:
Check the coolant
level when the engine is cold.
Engine drive belts*: Make sure the drive
belts are not frayed, worn, cracked or oily.
Engine oil level*: Check the level af ter
parking the vehicle on a level spot and
turning off the engine. Wait more than 15
minutes for the oil to drain back into the oil
pan.
Exhaust system: Make sure there are no
loose supports, cracks or holes. If the
sound of the exhaust seems unusual or
there is a smell of exhaust fumes, immedi-
ately have the exhaust system inspected. It
is recommended that you visit a NISSAN
dealer for this service. For additional infor-
mation, refer to “Exhaust gas (carbon mon-
oxide)” in the “Starting and driving” section
of this manual.
Fluid leaks: Check under the vehicle for
fuel, oil, water or other fluid leaks af ter the
vehicle has been parked for a while. Water
dripping from the air conditioner af ter use
is normal. If you should notice any leaks or if
fuel fumes are evident, check for the cause
and have it corrected immediately.
9-4Maintenance and schedules

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 re-
duce 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
capacities” in the “Technical and consumer
information” section of this manual.
Evaporative emissions control vapor
lines*: Check vapor lines for leaks or loose-
ness. Tighten connections or replace parts
as necessary.
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,
deterioration and fluid leaks. Replace any
deteriorated or damaged parts immedi-
ately.
Exhaust system: Visually inspect the ex-
haust pipes, muffler and hangers for leaks,
cracks, deterioration, and damage. Tighten
connections or replace parts as necessary.
Propeller shaf t(s): Check for damage,
looseness, and grease leakage.
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:
Tires should be rotated every
7,500 miles (12,000 km). When rotating tires,
check for damage and uneven wear. Re-
place if necessary.
Transmission fluid/oil, differential oil: Vi-
sually inspect for signs of leakage at speci-
fied intervals.
Off-road maintenance: Check the follow-
ing items frequently whenever you drive
off-road through deep sand, mud or water:
• Brake pads and rotors
• Brake linings and drums
• Brake lines and hoses
• Differential, transmission and transfer case oil
• Steering linkage
• Propeller shaf t(s) and front drive shaf ts
• Engine air filter
• Clutch housing drain (AWD only)
9-6Maintenance and schedules

3. Try to rearrange the trailer load so it isbalanced as described in this section.
• Be careful when passing other vehicles. Passing while towing a trailer requires
considerably more distance than normal
passing. Remember, the length of the
trailer must also pass the other vehicle
before you can safely change lanes.
• Downshif t the transmission to a lower gear for engine braking when driving
down steep or long hills. This will help
slow the vehicle without applying the
brakes.
• Avoid holding the brake pedal down too long or too frequently. This could cause
the brakes to overheat, resulting in re-
duced braking efficiency.
• Increase your following distance to allow for greater stopping distances while tow-
ing a trailer. Anticipate stops and brake
gradually.
• NISSAN recommends that the cruise control not be used while towing a trailer.
• Some states or provinces have specific regulations and speed limits for vehicles
that are towing trailers. Obey the local
speed limits. • Check your hitch, trailer wiring harness
connections, and trailer wheel lug nuts
af ter 50 miles (80 km) of travel and at
every break.
• When launching a boat, don't allow the water level to go over the exhaust tail
pipe or rear bumper.
• Make sure you disconnect the trailer lights before backing the trailer into the
water or the trailer lights may burn out.
When towing a trailer, final drive gear oil
should be replaced and transmission oil/
fluid should be changed more fre-
quently. For additional information, refer
to the “Do-it-yourself ” section in this
manual.FLAT TOWING – 4WD WITH
AUTOMATIC TRANSMISSION
Towing a vehicle behind a recreational ve-
hicle, such as a motor home, is sometimes
called flat towing.

EngineBefore starting the engine........5-13Capacities and recommended
fuel/lubricants...............10-2Changing engine coolant.........8-5Changing engine oil............8-6Changing engine oil filter.........8-6Checking engine coolant level......8-5Checking engine oil level.........8-6Engine coolant temperature gauge. . .2-7Engine cooling system...........8-4Engine oil.................. .8-6Engine oil and oil filter
recommendation.............10-7Engine oil pressure warning light. . . .2-17Engine oil viscosity.............10-7Engine serial number...........10-11Engine specifications...........10-9Engine Block Heater.............5-41Engine coolant temperature gauge. . . .2-7Enter button...............4-5, 4-10Event Data recorders............10-40Exhaust gas (Carbon monoxide)......5-2Explanation of maintenance items.....9-2Explanation of scheduled maintenance
items...................... .9-5Extended storage switch..........8-23Eyeglass case.................2-45
F
First aid kit....................6-2
Flashers
(See hazard warning flasher switch). . . .6-2Flat tire.................. .6-3, 6-4Floor mat positioning aid...........7-6Fluid
Brake fluid..................8-11Capacities and recommended
fuel/lubricants...............10-2Engine coolant................8-4Engine oil.................. .8-6Power steering fluid............8-10Windshield-washer fluid.........8-12Fog light switch................2-33Front air bag system
(See supplemental restraint system). . .1-77Front power seat adjustment........1-5Front seats....................1-2Front-door pocket..............2-40Fuel
Capacities and recommended
fuel/lubricants
...............10-2Fuel economy................5-23Fuel gauge................. .2-8Fuel octane rating.............10-6Fuel recommendation..........10-4Fuel-filler cap................3-13Fuel-filler lid.................3-13Loose fuel cap warning..........2-6Fuel efficient driving tips...........5-21Fuel gauge................... .2-8Fuel-filler door.................3-13Fuses......................8-20Fusible links..................8-22
G
Garage door opener, HomeLink® Universal
Transceiver............2-56, 2-58, 2-59Gas cap.....................3-13Gauge
Engine coolant temperature gauge. . .2-7Fuel gauge................. .2-8Odometer.................. .2-5Speedometer................2-5Tachometer..................2-7Trip computer................2-9Trip odometer................2-5General maintenance.............9-2Glove box................... .2-44
H
Hands-free phone system, Bluetooth®. .4-96Hazard warning flasher switch........6-2Head restraints.................1-10Headlight and turn signal switch.....2-30Headlight control switch...........2-30Headlights...................8-26Heated seat switches............2-35Heater
Heater and air conditioner controls. .4-34Heater operation..........4-25, 4-35Hill descent control switch.........2-36Hill descent control system.........5-37Hill start assist system............5-38HomeLink® Universal
Transceiver............2-56, 2-58, 2-59
11-3

M
MaintenanceGeneral maintenance...........9-2Inside the vehicle..............9-3Maintenance precautions.........8-2Outside the vehicle.............9-2Seat belt maintenance..........1-24Under the hood and vehicle.......9-4Maintenance requirements..........9-2Maintenance schedules............9-7Maintenance under severe operation
conditions....................9-10Malfunction indicator light..........2-22Manual front seat adjustment........1-3Manual windows...............2-49Map lights.................. .2-55Map pocket..................2-40Meters and gauges..............2-4Instrument brightness control.....2-33Mirror
Automatic anti-glare inside mirror. . .3-18Outside mirrors...............3-19Rearview...................3-17Vanity mirror.................3-17Mirrors......................3-17Mobile apps...................4-72Moonroof................ .2-52, 7-5
N
NISSAN Intelligent Key®..........3-2,3-8NISSAN Intelligent Key® battery discharge
indicator.....................5-12NISSAN Vehicle Immobilizer
System..................2-27,5-13NISSAN voice recognition system. . . .4-106NissanConnect®................4-72
O
Octane rating (See fuel octane rating). .10-6Odometer................... .2-5Oil
Capacities and recommended
fuel/lubricants
...............10-2Changing engine oil............8-6Changing engine oil filter.........8-6Checking engine oil level.........8-6Engine oil.................. .8-6Engine oil and oil filter
recommendation.............10-7Engine oil viscosity.............10-7One shot call..................4-99Outside mirrors................3-19Overhead sunglasses holder........2-45Overheat
If your vehicle overheats.........6-13Owner's manual order form........10-41Owner's manual/service manual order
information................. .10-41
P
Parking
Parking brake operation.........5-19Parking/parking on hills..........5-31Phone, Bluetooth® hands-free system. .4-96PowerFront seat adjustment...........1-5Power door locks...........3-5, 3-6Power outlet................2-39Power steering fluid............8-10Power steering system..........5-32Power windows..............2-50Rear power windows...........2-51Power outlet................. .2-39Power steering................5-32Power steering fluid..............8-10Precautions
Maintenance precautions.........8-2On-pavement and off-road driving
precautions................. .5-6Precautions on booster
seats...........1-39, 1-42, 1-54, 1-65Precautions on child
restraints.........1-39, 1-42, 1-54, 1-65Precautions on seat belt usage.....1-15Precautions on supplemental restraint
system....................1-70Precautions when starting and
driving.....................5-2Programmable features...........4-13Push starting..................6-13
11-5