2019 INFINITI QX50 air condition

Some day-to-day and regular maintenance is
essential to maintain your vehicle good me-
chanical condition, as well as its emissions
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
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 responsi-
bility 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 pre-
fer, 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 mainte-
nance will be required.
WHERE TO GO FOR SERVICE
If maintenance service is required or your
vehicle appears to malfunction, have the sys-
tems checked and serviced. It is recom-
mended that you visit an INFINITI retailer for
this service.
INFINITI technicians are well-trained spe-
cialists and are kept up-to-date with the lat-
est service information through technical bul-
letins, service tips and training programs.
They are completely qualified to work on
INFINITI vehiclesbeforework begins.
You can be confident that an INFINITI retail-
er’s service department can perform the ser-
vice needed to meet the maintenance re-
quirements on your vehicle. During the normal day-to-day operation of
the vehicle, general maintenance should be
performed regularly as prescribed in this sec-
tion. If you detect any unusual sounds, vibra-
tions or smells, be sure to check for the cause
or have it checked promptly. In addition, it is
recommended that you visit an INFINITI re-
tailer if you think that repairs are required.
When performing any checks or maintenance
work, closely observe the “Maintenance pre-
cautions” in the “Do-it-yourself” section of
this manual.
EXPLANATION OF GENERAL
MAINTENANCE ITEMS
Additional information on the following
items with“*”isfound in the “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 the doors
and engine hood operate properly. Also en-
sure that all latches lock securely. Lubricate
hinges, latches, latch pins, rollers and links if
necessary. Make sure that the secondary
MAINTENANCE REQUIREMENTS GENERAL MAINTENANCE
9-2Maintenance and schedules

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.
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.
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 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 (except for maintenance free bat-
teries)*: Check the fluid level in each cell. It
should be between the MAX and MIN lines.
Vehicles operated in high temperatures or
under severe conditions 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 elec-
tronic 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 belt*: Make sure the drive belt is
not 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 recommended
that you visit an INFINITI retailer for this
service. For additional information, refer to
“Exhaust gas (carbon monoxide)” in the
“Starting and driving” section of this manual.
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 fuel fumes
are evident, check for the cause and have it
corrected immediately.
9-4Maintenance and schedules

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, deformation, rot or
loose connections.
Underbody: The underbody is frequently ex-
posed to corrosive substances such as those
used on icy roads or to control dust. It is very
important to remove these substances, oth-
erwise rust may 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 accumulate. For additional informa-
tion, refer to the “Appearance and care” sec-
tion of this manual.
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 sched-
uled maintenance items that should be regu-
larly checked or replaced. The maintenance
schedule indicates at which mileage/time in-
tervals each item requires service.
In addition to scheduled maintenance, your
vehicle requires that some items be checked
during normal day-to-day operation. For ad-
ditional information, refer to “General main-
tenance” in this section.
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 INFINITI. Other
maintenance items and intervals are required.
When applicable, additional information can
be found in the “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 vali-
dated by INFINITI.
For recommended fuel, lubricants, fluids,
grease, and refrigerant, refer to “Recom-
mended fluids/lubricants and capacities” in
the “Technical and consumer information”
section of this manual.
EMISSION CONTROL SYSTEM
MAINTENANCE:
Drive belt*:
Check engine drive belt for wear,
fraying or cracking and for proper tension.
Replace any damaged drive belt.
Engine air filter: Replace at specified inter-
vals. When driving for prolonged periods in
dusty conditions, check/replace the filter
more frequently.
EXPLANATION OF SCHEDULED
MAINTENANCE ITEMS
Maintenance and schedules9-5

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 frequent
maintenance may be required.After
90,000 miles (144,000 km)/144 months,
continue maintenance at the same
mileage/time interval.
EMISSION CONTROL SYSTEM MAINTENANCE
Abbreviations: 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
3.75 (6)6 7.5
(12) 12 11.25
(18)18 15
(24) 24 18.75
(30)30 22.5
(36) 36 26.25
(42)42 30
(48) 48 33.75
(54)54 37.5
(60) 60 41.25
(66)66 45
(72) 72
Drive belt See NOTE (1) I*I*I*
Air cleaner filter See NOTE (2) R
EVAP vapor lines I*I*I*
Fuel lines I*I*I*
Fuel filter See NOTE (3)
Engine coolant* See NOTE (4)(5)
Engine oil See NOTE (6)RRRRRR
Engine oil filter See NOTE (6)RRRRRR
Spark plugs See NOTE (7)Replace every 105,000 miles (168,000 km)
Intake and exhaust valve clearances* See NOTE (8)
STANDARD MAINTENANCE
Maintenance and schedules9-9

MAINTENANCE OPERATION
Perform at number of miles, kilometers or months, whichever comes first. Miles x 1,000
(km x 1,000) Months MAINTENANCE INTERVAL
48.75 (78)78 52.5
(84) 84 56.25
(90)90 60
(96) 96 63.75
(102) 102 67.5
(108) 108 71.25
(114) 114 75
(120) 120 78.75
(126) 126 82.5
(132) 132 86.25
(138) 138 90
(144) 144
Drive belt See NOTE (1)I*I*I*I*I*I*
Air cleaner filter See NOTE (2)R R
EVAP vapor lines I*I*I*
Fuel lines I*I*I*
Fuel filter See NOTE (3)
Engine coolant* See NOTE (4)(5)
Engine oil See NOTE (6)RRRRRR
Engine oil filter See NOTE (6)RRRRRR
Spark plugs See NOTE (7)Replace every 105,000 miles (168,000 km)
Intake and exhaust valve clearances* See NOTE (8)
NOTE:
(1) After 30,000 miles (48,000 km) or 48 months, inspect every 7,500 miles (12,000 km) or 12 months. Replace the drive belts if found
damaged.
(2) If operating mainly in dusty conditions, more frequent maintenance may be required.
(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% antifreeze 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 coolant.
(6) If the oil replacement indicator is displayed, change the engine oil and filter within two weeks or less than 500 miles (800 km)
(7) Replace spark plug when the plug gap exceeds 0.045 in (1.15 mm) even if within specified periodic replacement mileage.
(8) Periodic maintenance is not required. However, if valve noise increased, inspect valve clearance.
* Maintenance items and intervals with “*” are recommended by INFINITI for reliable vehicle operation. The owner need not perform such
maintenance in order to maintain the emission warranty or manufacturer recall liability. Other maintenance items and intervals are required.
9-10Maintenance and schedules

10 Technical and consumer information
Recommended fluids/lubricants and capacities . . 10-2Fuel recommendation ....................... 10-3
Engine oil and oil filter recommendations .....10-6
Air conditioner system refrigerant and oil
recommendations ........................... 10-7
Specifications .................................. 10-8
Engine ...................................... 10-8
Wheels and tires ............................ 10-9
Dimensions and weights .....................10-9
When traveling or registering in another
country ....................................... 10-10
Vehicle identification .......................... 10-10
Vehicle Identification Number (VIN) plate . . . 10-10
Vehicle identification number
(chassis number) ........................... 10-10
Engine serial number ....................... 10-11
F.M.V.S.S./C.M.V.S.S. certification label .....10-11
Emission control information label ..........10-11
Tire and Loading Information label ..........10-12
Air conditioner specification label ...........10-12
Installing front license plate ....................10-12Vehicle loading information
....................10-14
Terms ..................................... 10-14
Vehicle load capacity ....................... 10-15
Securing the load ........................... 10-16
Loading tips ............................... 10-17
Measurement of weights ...................10-17
Towing a trailer ............................... 10-18
Maximum load limits ....................... 10-19
Towing load/specification ..................10-22
Towing safety ............................. 10-23
Flat towing for front wheel drive vehicle
(if so equipped) ............................. 10-28
Flat towing for all–wheel drive vehicle
(if so equipped) ............................. 10-28
Uniform tire quality grading ....................10-29
Emission control system warranty .............10-30
Reporting safety defects ......................10-30
Readiness for Inspection/Maintenance (I/M)
test ........................................... 10-31
Event DataRecorders

(EDR)................... 10-32
Owner’s Manual/Service Manual order
information ................................... 10-33

Fluid typeCapacity (approximate) Recommended Fluids/Lubricants
Metric
Measure US
Measure Imperial
Measure
Air conditioning system refrigerant ———• HFC-134a (R-134a)
• For additional information, refer to “Air conditioner system refrigerant
and oil recommendations” in this section.
Air conditioning system oil ———• Genuine NISSAN A/C System oil ND-OIL8 or equivalent
• For additional information, refer to “Air conditioner system refrigerant
and oil recommendations” in this section.
Windshield-washer fluid ———• Genuine NISSAN Windshield Washer Concentrate Cleaner & Anti-
freeze fluid or equivalent
FUEL RECOMMENDATION
Use unleaded premium gasoline with an oc-
tane rating of at least 91 AKI (Anti-Knock
Index) number (Research octane number 96).
If unleaded premium gasoline is not available,
unleaded regular gasoline with an octane rat-
ing of at least 87 AKI number (Research oc-
tane number 91) may be temporarily used,
but only under the following precautions:
∙ Have the fuel tank filled only partially with unleaded regular gasoline, and fill up
with unleaded premium gasoline as soon
as possible.
∙ Avoid full throttle driving and abrupt ac- celeration. Use unleaded premium gasoline for maxi-
mum vehicle performance.
CAUTION
∙ Using a fuel other than that specified
could adversely affect the emission con-
trol system, and may also affect the war-
ranty coverage.
∙ Under no circumstances should a leaded gasoline be used, because this will dam-
age the three-way catalyst. ∙ Do not use a fuel containing more than
15% ethanol in your vehicle. Your vehicle
is not designed to run on a fuel containing
more than 15% ethanol. Using a fuel con-
taining more than 15% ethanol in a ve-
hicle not specifically designed for a fuel
containing more than 15% ethanol can
adversely affect the emission control de-
vices and systems of the vehicle. Damage
caused by such fuel is not covered by the
INFINITI New Vehicle Limited Warranty.
Technical and consumer information10-3

CAUTION
Damage to engine caused by improper
maintenance or use of incorrect oil and fil-
ter quality and/or viscosity is not covered
by the INFINITI New Vehicle Limited
Warranty.
Your engine was filled with a high-quality
engine oil when it was built. You do not have
to change the oil before the first recom-
mended change interval. Oil and filter change
intervals depend upon how you use your ve-
hicle.
Operation under the following conditions
may require more frequent oil and filter
changes: ∙ repeated short distance driving at cold outside temperatures
∙ driving in dusty conditions
∙ extensive idling
∙ towing a trailer
∙ stop and go commuting
For additional information on maintenance
schedules, refer to the “Maintenance and
schedules” section of this manual.
AIR CONDITIONER SYSTEM
REFRIGERANT AND OIL
RECOMMENDATIONS
The air conditioner system in your INFINITI
vehicle must be charged with the refrigerant
HFC-134a (R-134a) and the oil, Genuine
NISSAN A/C System Oil Type ND-OIL8 or
the exact equivalents.
CAUTION
The use of any other refrigerant or oil will
cause severe damage to the air condition-
ing system and will require the replacement
of all air conditioner system components.
The refrigerant HFC-134a (R-134a) in your
INFINITI vehicle does not harm the earth’s
ozone layer. Although this refrigerant does
not affect the earth’s atmosphere, certain
government regulations require the recovery
and recycling of any refrigerant during auto-
motive air conditioner system service. An
INFINITI retailer has the trained technicians
and equipment needed to recover and recycle
your air conditioner system refrigerant.
It is recommended that you visit an INFINITI
retailer when servicing your air conditioner
system.
Technical and consumer information10-7