engine INFINITI Q70 2018 Owners Manual

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.
SDI2549
VK56VD engine
Do-it-yourself8-19
SPARK PLUGSAIR CLEANER

8-20Do-it-yourself
SDI2546
VQ37VHR engine
Remove the retainers
as illustrated and
pull out the filter element.
The filter element should not be cleaned and
reused. Replace it according to the main-
tenance schedule shown in the “9. Main-
tenance and schedules” section. 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
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.
SDI2048
REPLACING
Replace the wiper blades if they are worn.
Before replacing the wiper blades, the wiper
should be in the fully up position to avoid
scratching the engine hood or damaging the
wiper arm. To pull up the wiper arm, see
“Wiper and washer switch” (P.2-32).
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.
Do-it-yourself8-21
WINDSHIELD WIPER BLADES

SDI2584
SDI2566
ENGINE COMPARTMENT
WARNING
Never use a fuse of a higher or lower
amperage rating than that specified on
the fuse box cover. This could damage
the electrical system or electronic con-
trol units or cause a fire.
If any electrical equipment does not operate,
check for an open fuse.
1. Be sure the ignition switch is pushed to the OFF or LOCK position and the
headlight switch is turned to OFF.
2. Open the engine hood and remove the cover on the battery and the fuse/fusible
link holder.
3. Remove the fuse/fusible link holder cover.
4. Remove the fuse with the fuse puller.
SDI1754
5. If the fuse is open, replace it with a
new fuse. Spare fuses are stored in the
passenger compartment fuse box.
6. If a new fuse also opens, have the electrical system checked and repaired.
It is recommended you visit an INFINITI
retailer for this service.
The holder
also contains the fuses. It is
recommended you visit an INFINITI retailer
for checking and/or replacing.
Do-it-yourself8-23
FUSES

9-2Maintenance and schedules
Some day-to-day and regular maintenance
is essential to maintain your vehicle’s good
mechanical condition, as well as its emission
and engine performance.
It is the owner’s responsibility to make sure
that the scheduled maintenance, as well as
general maintenance, is performed.
As the vehicle owner, you are the only one
who can ensure that your vehicle receives
the proper maintenance. You are a vital link
in the maintenance chain.
GENERAL MAINTENANCE
General maintenance includes those items
which should be checked during normal day-
to-day operation. They are essential for
proper vehicle operation. It is your respon-
sibility to perform these procedures regularly
as prescribed.
Performing general maintenance checks re-
quires minimal mechanical skill and only a
few general automotive tools.
These checks or inspections can be done by
yourself, a qualified technician or, if you
prefer, an INFINITI retailer.
SCHEDULED MAINTENANCE
The maintenance items listed in this section
are required to be serviced at regular inter-
vals. However, under severe driving condi-
tions, additional or more frequent
maintenance will be required.
WHERE TO GO FOR SERVICE
If maintenance service is required or your
vehicle appears to malfunction, have the
systems checked and serviced. It is recom-
mended you visit an INFINITI retailer for this
service.
INFINITI technicians are well-trained spe-
cialists and are kept up to date with the
latest service information through technical
bulletins, service tips and training programs.
They are completely qualified to work on
INFINITI vehiclesbeforework begins.
You can be confident that an INFINITI
retailer’s service department can perform
the service needed to meet the maintenance
requirements on your vehicle. During the normal day-to-day operation of
the vehicle, general maintenance should be
performed regularly as prescribed in this
section. If you detect any unusual sounds,
vibrations or smell, be sure to check for the
cause, or it is recommended you visit an
INFINITI retailer to do it promptly. In addi-
tion, it is recommended you visit an INFINITI
retailer if you think that repairs are required.
When performing any checks or mainte-
nance work, see “Maintenance precautions”
(P.8-2).
EXPLANATION OF GENERAL
MAINTENANCE ITEMS
Additional information on the following
items with “*” is found in the “8. Do-it-
yourself” section of this manual.
Outside the vehicle
The maintenance items listed here should be
performed from time to time, unless other-
wise specified.
Doors and engine hood:
Check that all doors
and the engine hood, operate properly. Also
ensure that all latches lock securely. Lubri-
cate hinges, latches, latch pins, rollers and
links if necessary. Make sure that the
secondary latch keeps the hood from open-
ing when the primary latch is released.
When driving in areas using road salt or
MAINTENANCE REQUIREMENT GENERAL MAINTENANCE

9-4Maintenance and schedules
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 properly 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*: Check the fluid level in each cell. It
should be between the MAX and MIN lines.
Vehicles operated in high temperatures or
under severe condition require frequent
checks of the battery fluid level.
NOTE:
Care should be taken to avoid situations
that can lead to potential battery discharge
and potential no-start conditions such as:
1. Installation or extended use of electro-
nic accessories that consume battery
power when the engine is not running
(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 brake
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 that no belt is
frayed, worn, cracked or oily.
Engine oil level*: Check the level after
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, immediately have
the exhaust system inspected. It is recom-
mended you visit an INFINITI retailer for this
service. (See “Precautions when starting and
driving” (P.5-4) for exhaust gas (Carbon
monoxide).)
Fluid leaks: Check under the vehicle for fuel,
oil, water or other fluid leaks after the
vehicle has been parked for a while. Water
dripping from the air conditioner after use is
normal. If you should notice any leaks or if
gasoline fumes are evident, check for the
cause and have it corrected immediately. Power steering fluid level* and lines:
Check
the level when the fluid is cold, with the
engine off. Check the lines for proper
attachment, leaks, cracks, etc.
Radiator and hoses: Check the front of the
radiator and clean off any dirt, insects,
leaves, etc., that may have accumulated.
Make sure the hoses have no cracks, defor-
mation, rot or loose connections.
Underbody: The underbody is frequently
exposed to corrosive substances such as
those used on icy roads or to control dust. It
is very important to remove these sub-
stances, otherwise rust will form on the
floor pan, frame, fuel lines and around the
exhaust system. At the end of winter, the
underbody should be thoroughly flushed
with plain water, being careful to clean
those areas where mud and dirt may accu-
mulate. For additional information, see
“Cleaning exterior” (P.7-2).
Windshield washer fluid*: Check that there
is adequate fluid in the reservoir.

The following descriptions are provided to
give you a better understanding of the
scheduled maintenance items that should
be regularly checked or replaced. The main-
tenance schedule indicates at which mile-
age/time intervals each item requires
service.
In addition to scheduled maintenance, your
vehicle requires that some items be checked
during normal day-to-day operation. Refer
to “General maintenance” (P.9-2).
Items marked with “*” are recommended by
INFINITI for reliable vehicle operation. You
are not required to perform maintenance on
these items in order to maintain the warran-
ties which come with your vehicle. Other
maintenance items and intervals are re-
quired.
When applicable, additional information can
be found in the “8. Do-it yourself” section of
this manual.
NOTE:
INFINITI does not advocate the use of non-
OEM approved aftermarket flushing sys-
tems and strongly advises against perform-
ing these services on an INFINITI product.
Many of the aftermarket flushing systems
use non-OEM approved chemicals or sol-
vents, the use of which has not been
validated by INFINITI.For recommended fuel, lubricants, fluids,
grease, and refrigerant, refer to “Capacities
and recommended fluids/lubricants” (P.10-
2) of this manual.
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 intervals. 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 replacing coolant, be sure to
use only Genuine NISSAN Long Life Anti-
freeze/Coolant (blue) or equivalent with the
proper mixture. (Refer to “Engine cooling
system” (P.8-8) to determine the proper
mixture for your area.)
NOTE:
Mixing any other type of coolant or the use
of non-distilled water may reduce the
recommended service interval of the cool-
ant.
Engine oil and oil filter:
Replace engine oil and oil filter at the
specified intervals. For recommended oil
grade and viscosity refer to “Capacities and
recommended fluids/lubricants” (P.10-2).
Engine valve clearance*:
Inspect only if valve noise increases. Adjust
valve clearance if necessary.
Evaporative emissions control vapor lines*:
Check vapor lines for leaks or looseness.
Tighten connections or replace parts as
necessary.
Fuel lines*:
Check the fuel hoses, piping and connections
for leaks, looseness, or deterioration. Tight-
en connections or replace parts as necessary.
Spark plugs:
Replace at specified intervals. Install new
plugs of the type as originally equipped.
CHASSIS AND BODY MAINTE-
NANCE
Brake lines and cables:
Visually inspect for proper installation.
Check for chafing, cracks, deterioration,
and signs of leaking. Replace any deterio-
rated or damaged parts immediately.
Maintenance and schedules9-5
EXPLANATION OF SCHEDULED
MAINTENANCE ITEMS

9-8Maintenance and schedules
EMISSION CONTROL SYSTEM MAINTENANCE
Abbreviations: I = Inspect and correct or replace as necessary, R = Replace
MAINTENANCE OP-
ERATION
Perform at number of
miles, kilometers or
months, whichever
comes first.Miles × 1,000
(km × 1,000) Months MAINTENANCE INTERVAL
5
(8) 6 10
(16) 12 15
(24) 18 20
(32) 24 25
(40) 30 30
(48) 36 35
(56) 42 40
(64) 48 45
(72) 54 50
(80) 60 55
(88) 66 60
(96) 72
Drive belts See NOTE (1) I*I* I*
Air cleaner filter See NOTE (2) RR
EVAP vapor lines I*I* I*
Fuel lines I*I* I*
Fuel filter See NOTE (3)
Engine coolant* See NOTE (4) (5)
Engine oil R R R R R R R R R R R R
Engine oil filter R R R R R R R R R R R R
Spark plugs Replace every 105,000 miles (168,000 km)
Intake and exhaust valve
clearance* See NOTE (6)

MAINTENANCE OP-
ERATION
Perform at number of
miles, kilometers or
months, whichever
comes first.Miles × 1,000
(km × 1,000) Months MAINTENANCE INTERVAL
65
(104) 78 70
(112) 84 75
(120) 90 80
(128) 96 85
(136) 102 90
(144) 108 95
(152) 114 100
(160) 120 105
(168) 126 110
(176) 132 115
(184) 138 120
(192) 144
Drive belts See NOTE (1) I*I*I*I* I* I*
Air cleaner filter See NOTE (2) RR
EVAP vapor lines I*I* I*
Fuel lines I*I* I*
Fuel filter See NOTE (3)
Engine coolant* See NOTE (4) (5)
Engine oil R R R R R R R R R R R R
Engine oil filter R R R R R R R R R R R R
Spark plugs Replace every 105,000 miles (168,000 km)
Intake and exhaust valve
clearance* See NOTE (6)
NOTE:
(1) After 40,000 miles (64,000 km) or 48
months, inspect every 10,000 miles
(16,000 km) or 12 months. Replace the
drive belts if found damaged.
(2) If operating mainly in dusty conditions,
more frequent maintenance may be re-
quired.
(3) Periodic maintenance is not required.
(4) First replacement interval is 105,000
miles (168,000 km) or 84 months. After first replacement, replace every 75,000
miles (120,000 km) or 60 months.
(5) Use only Genuine NISSAN Long Life
Antifreeze/Coolant (blue) or equivalent
with proper mixture ratio of 50% anti-
freeze and 50% demineralized or distilled
water. Mixing any other type of coolant or
the use of non-distilled water may reduce
the life expectancy of the factory fill cool-
ant.
(6) Periodic maintenance is not required.
However, if valve noise increases, inspectvalve clearance.
*: Maintenance items and intervals with “*”
are recommended by INFINITI for reliable
vehicle operation. The owner need not to
perform such maintenance in order to
maintain the emission warranty or manu-
facturer recall liability. Other maintenance
items and intervals are required.
Maintenance and schedules9-9

10 Technical and consumer information
Capacities and recommended fluids/lubricants...... 10-2Fuel information (for VQ37VHR
engine model).............................................................. 10-4
Fuel information (for VK56VD engine model)..... 10-6
Engine oil and oil filter recommendation............. 10-9
Air conditioning system refrigerant and
lubricant recommendations .................................. 10-10
Specifications.................................................................. 10-11 Engine........................................................................\
.. 10-11
Wheels and tires ...................................................... 10-12
Dimensions ................................................................ 10-13
When traveling or registering in
another country............................................................. 10-14
Vehicle identification.................................................... 10-14 Vehicle Identification Number (VIN) plate ....... 10-14
Vehicle identification number
(chassis number) ...................................................... 10-14
Engine serial number .............................................. 10-15
F.M.V.S.S./C.M.V.S.S. certification label.......... 10-15
Emission control information label..................... 10-16
Tire and loading information label...................... 10-16
Air conditioner specification label ...................... 10-16 Installing front license plate....................................... 10-17
Vehicle loading information....................................... 10-18
Terms ........................................................................\
10-18
Vehicle load capacity............................................ 10-20
Loading tips ............................................................ 10-21
Measurement of weights.................................... 10-21
Towing a trailer............................................................. 10-22 Flat towing.............................................................. 10-22
Uniform tire quality grading...................................... 10-22 Treadwear ............................................................... 10-22
Traction AA, A, B and C...................................... 10-23
Temperature A, B and C...................................... 10-23
Emission control system warranty.......................... 10-23
Reporting safety defects............................................ 10-24
Readiness for Inspection/Maintenance (I/M) test
(US only)........................................................................\
.. 10-25
Event Data Recorders (EDR) .................................... 10-25
Owner’s Manual/Service Manual
order information ......................................................... 10-26