2019 INFINITI QX50 fuel cap

To remove the fuel-filler cap:1. Turn the fuel-filler cap counterclockwise to remove.
2. Put the fuel-filler cap on the cap holder
Awhile refueling.
To install the fuel-filler cap: 1. Insert the fuel-filler cap straight into the fuel-filler tube.
2. Turn the fuel-filler cap clockwise until a single click is heard.
Loose Fuel Cap warning
The Loose Fuel Cap warning will appear in
the vehicle information display when the
fuel-filler cap is not tightened correctly after
the vehicle has been refueled. It may take a
few driving trips for the message to be dis-
played. To turn off the warning, perform the
following:
1. Remove and install the fuel-filler cap as soon as possible. For additional informa-
tion, refer to “Fuel-filler cap” in this sec-
tion.
2. Tighten the fuel-filler cap until it a single click is heard. 3. Press the
buttonAon the steer-
ing wheel for about 1 second to turn off
the Loose Fuel Cap warning message in
the vehicle information display
B.
LPD2726LPD2786
Pre-driving checks and adjustments3-33

When performing any inspection or mainte-
nance work on your vehicle, always take care
to prevent serious accidental injury to your-
self or damage to the vehicle. The following
are general precautions which should be
closely observed.
WARNING
∙ Park the vehicle on a level surface, applythe parking brake securely and block the
wheels to prevent the vehicle from mov-
ing. Move the shift lever to P (Park).
∙ Be sure the ignition switch is in the OFF or LOCK position when performing any
parts replacement or repairs.
∙ If you must work with the engine running, keep your hands, clothing, hair and tools
away from moving fans, belts and any
other moving parts.
∙ It is advisable to secure or remove any loose clothing and remove any jewelry,
such as rings, watches, etc. before work-
ing on your vehicle.
∙ Always wear eye protection whenever you work on your vehicle. ∙ Your vehicle is equipped with an auto-
matic engine cooling fan. It may come on
at any time without warning, even if the
ignition switch is in the OFF position and
the engine is not running. To avoid injury,
always disconnect the negative battery
cable before working near the fan.
∙ If you must run the engine in an enclosed space such as a garage, be sure there is
proper ventilation for exhaust gases to
escape.
∙ Never get under the vehicle while it is supported only by a jack. If it is necessary
to work under the vehicle, support it with
safety stands.
∙ Keep smoking materials, flame and sparks away from the fuel tank and
battery.
∙ Because the fuel lines on gasoline engine models are under high pressure even
when the engine is off, it is recommended
that you visit an INFINITI retailer for ser-
vice of the fuel filter or fuel lines.
CAUTION
∙ Do not work under the hood while theengine is hot. Turn the engine off and
wait until it cools down. ∙ Avoid contact with used engine oil and
coolant. Improperly disposed engine oil,
engine coolant and/or other vehicle flu-
ids can damage the environment. Always
conform to local regulations for disposal
of vehicle fluid.
∙ Never leave the engine or Continuously Variable Transmission (CVT) related
component harnesses disconnected
while the ignition switch is in the ON
position.
∙ Never connect or disconnect the battery or any transistorized component while
the ignition switch is in the ON position.
This “Do-it-yourself” section gives instruc-
tions regarding only those items which are
relatively easy for an owner to perform.
A Genuine INFINITI service manual is also
available. For additional information, refer to
“Owner’s Manual/Service Manual order in-
formation” in the “Technical and consumer
information” section of this manual.
You should be aware that incomplete or im-
proper servicing may result in operating diffi-
culties or excessive emissions, and could af-
fect warranty coverage. If in doubt about any
servicing, it is recommended that you have it
done by an INFINITI retailer.
MAINTENANCE PRECAUTIONS
8-2Do-it-yourself

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

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 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 refer to
“Recommended fluids/lubricants and capaci-
ties” in the “Technical and consumer informa-
tion” section of this manual.
Engine valve clearance*: Inspect only if valve
noise increases. Adjust valve clearance if nec-
essary.
Evaporative emissions control vapor lines*:
Check vapor lines for leaks or looseness.
Tighten connections or replace parts as nec-
essary. Fuel lines*:
Check the fuel hoses, piping and
connections for leaks, looseness, or deterio-
ration. Tighten connections or replace 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 immedi-
ately.
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 exhaust
pipes, muffler and hangers for leaks, cracks,
deterioration, and damage. Tighten connec-
tions or replace parts as necessary.
In-cabin microfilter: Replace at specified in-
tervals. When driving for prolonged periods in
dusty conditions, replace the filter more fre-
quently. Propeller shaft(s):
Check for damage, loose-
ness, and grease leakage. (AWD)
Steering gear and linkage, axle and suspen-
sion parts, drive shaft boots: Check for dam-
age, 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) according to the
instructions under “Explanation of general
maintenance items” in this section. When ro-
tating tires, check for damage and uneven
wear. Replace if necessary.
Transmission fluid/oil, differential oil and
transfer case oil: Visually inspect for signs of
leakage at specified intervals.
Replace at specified intervals.
9-6Maintenance 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

The following are approximate capacities. The actual refill capacities may be slightly different. When refilling, follow the procedure described
in the “Do-it-yourself” section to determine the proper refill capacity.
Fluid typeCapacity (approximate) Recommended Fluids/Lubricants
Metric
Measure US
Measure Imperial
Measure
Fuel 60 L 15-7/8 gal 13-1/4 gal• For additional information, refer to “Fuel recommendation” in this
section.
Engine oil*1
Drain and refill
*1 For additional information,
refer to “Engine oil” in the “Do-it-
yourself” section of this manual. With oil filter
change 4.7 L 5 qt 4-1/8 qt
• Genuine “Nissan Motor Oil Ester 5W-30 SN” is recommended.
• If the above motor oil is not available, use an equivalent motor oil that
matches the above grade and viscosity. For additional information, re-
fer to “Engine oil and oil filter recommendations” in this section.
Without oil filter
change 4.4 L 4-5/8 qt 3-7/8 qt
Engine coolant
(with reservoir) 7.7 L 2 gal 1-3/4 gal• Pre-diluted Genuine NISSAN Long Life Antifreeze/Coolant (blue) or
equivalent
Continuously Variable Transmission (CVT) fluid ———• Genuine NISSAN CVT Fluid NS-3
• INFINITI recommends using Genuine NISSAN CVT Fluid NS-3 (or
equivalent) ONLY in INFINITI CVTs. Do not mix with other fluids. Us-
ing fluids that are not equivalent to Genuine NISSAN CVT Fluid NS-3
may damage the CVT. Damage caused by the use of fluids other than
as recommended is not covered under the INFINITI’s New Vehicle
Limited Warranty.
Differential gear oil ———• Genuine NISSAN HYPOID FLUID•S1 GL-5 75W-80 or equivalent
• The use of differential gear oil other than the specified may cause ve-
hicle malfunctions and result in non-warranty vehicle repairs.
Transfer oil ———• Genuine NISSAN Differential Oil Hypoid Super GL-5 80W-90 or
equivalent conventional (non-synthetic) oil
Brake fluid ———• Genuine NISSAN Super Heavy Duty Brake Fluid*2 or equivalent DOT
3
*2: Available in mainland USA through an INFINITI retailer.
Multi-purpose grease ——— • NLGI No. 2 (Lithium Soap base)
RECOMMENDED FLUIDS/
LUBRICANTS AND CAPACITIES
10-2Technical and consumer information

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

ENGINE OIL AND OIL FILTER
RECOMMENDATIONS
Selecting the correct oil
It is essential to choose the correct grade,
quality and viscosity engine oil to ensure sat-
isfactory engine life and performance. For
additional information, refer to "Recom-
mended fluids/lubricants and capacities" in
this section. INFINITI recommends the use of
an energy conserving oil in order to improve
fuel economy.
Select only engine oils that meet the Ameri-
can Petroleum Institute (API) certification orInternational Lubricant Standardization and
Approval Committee (ILSAC) certification
and SAE viscosity standard. These oils have
the API certification mark on the front of the
container. Oils which do not have the speci-
fied quality label should not be used as they
could cause engine damage.
Oil additives
INFINITI does not recommend the use of oil
additives. The use of an oil additive is not
necessary when the proper oil type is used
and maintenance intervals are followed.
Oil which may contain foreign matter or has
been previously used should not be used.
Oil viscosity
The engine oil viscosity or thickness changes
with temperature. Because of this, it is impor-
tant to select the engine oil viscosity based on
the temperatures at which the vehicle will be
operated before the next oil change. Choos-
ing an oil viscosity other than that recom-
mended could cause serious engine damage.
Selecting the correct oil filter
Your new INFINITI vehicle is equipped with a
high-quality Genuine NISSAN oil filter. When
replacing, use a Genuine NISSAN oil filter or
its equivalent for the reason described in
“Change intervals”.
Change intervals
The oil and oil filter change intervals for your
engine are based on the use of the specified
quality oils and filters. Using engine oil and
filters that are not of the specified quality, or
exceeding recommended oil and filter change
intervals could reduce engine life.
LTI2061
10-6Technical and consumer information