2019 INFINITI QX50 service

∙ Do not use fuel that contains the octanebooster methylcyclopentadienyl manga-
nese tricarbonyl (MMT). Using fuel con-
taining MMT may adversely affect ve-
hicle performance and vehicle emissions.
Not all fuel dispensers are labeled to indi-
cate MMT content, so you may have to
consult your gasoline retailer for more
details. Note that Federal and California
laws prohibit the use of MMT in reformu-
lated gasoline.
∙ U.S. government regulations require ethanol dispensing pumps to be identi-
fied by a small, square, orange and black
label with the common abbreviation or
the appropriate percentage for that
region.
Gasoline specifications
INFINITI recommends using gasoline that
meets the World-Wide Fuel Charter
(WWFC) specifications where it is available.
Many of the automobile manufacturers de-
veloped this specification to improve emis-
sion control system and vehicle performance.
Ask your service station manager if the gaso-
line meets the WWFC specifications.
Reformulated gasoline
Some fuel suppliers are now producing refor-
mulated gasolines. These gasolines are spe-
cially designed to reduce vehicle emissions.
INFINITI supports efforts towards cleaner air
and suggests that you use reformulated
gasoline when available.
Gasoline containing oxygenates
Some fuel suppliers sell gasoline containing
oxygenates such as ethanol, MTBE and
methanol with or without advertising their
presence. INFINITI does not recommend the
use of fuels of which the oxygenate content
and the fuel compatibility for your INFINITI
cannot be readily determined. If in doubt, ask
your service station manager.
If you use oxygenate-blend gasoline, please
take the following precautions as the usage
of such fuels may cause vehicle performance
problems and/or fuel system damage.
∙ The fuel should be unleaded and have an
octane rating no lower than that recom-
mended for unleaded gasoline.
∙ If an oxygenate-blend other than
methanol blend is used, it should contain
no more than 15% oxygenate. ∙
If a methanol blend is used, it should con-
tain no more than 5% methanol (methyl
alcohol, wood alcohol). It should also
contain a suitable amount of appropri-
ate cosolvents and corrosion inhibitors.
If not properly formulated with appro-
priate cosolvents and corrosion inhibi-
tors, such methanol blends may cause
fuel system damage and/or vehicle per-
formance problems. At this time, suffi-
cient data is not available to ensure that
all methanol blends are suitable for use in
INFINITI vehicles.
If any driveability problems such as engine
stalling and difficult hot-starting are experi-
enced after using oxygenate-blend fuels, im-
mediately change to a non-oxygenate fuel or
a fuel with a low blend of MTBE.
Take care not to spill gasoline during refuel-
ing. Gasoline containing oxygenates can
cause paint damage.
E–15 fuel
E-15 fuel is a mixture of approximately 15%
fuel ethanol and 85% unleaded gasoline.
E-15 can only be used in vehicles designed to
run on E-15 fuel. U.S. government regula-
tions require fuel ethanol dispensing pumps
to be identified with small, square, orange
10-4Technical and consumer information

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

∙ While going downhill, the weight of thetrailer pushing on the tow vehicle may
decrease overall stability. Therefore, to
maintain adequate control, reduce your
speed and shift to a lower gear. Avoid
long or repeated use of the brakes when
descending a hill, as this reduces their
effectiveness and could cause overheat-
ing. Shifting to a lower gear instead pro-
vides “engine braking” and reduces the
need to brake as frequently.
∙ If the engine coolant temperature rises to a high temperature, refer to “If your ve-
hicle overheats” in the “In case of emer-
gency” section of this manual.
∙ Trailer towing requires more fuel than normal circumstances.
∙ Avoid towing a trailer for your vehicle’s first 500 miles (805 km).
∙ For the first 500 miles (805 km) that you do tow, do not drive over 50 mph
(80 km/h).
∙ Have your vehicle serviced more often than at intervals specified in the recom-
mended maintenance schedule in the
“Maintenance and schedules” section of
this manual. ∙ When making a turn, your trailer wheels
will be closer to the inside of the turn than
your vehicle wheels. To compensate for
this, make a larger than normal turning
radius during the turn.
∙ Crosswinds and rough roads will ad- versely affect vehicle/trailer handling,
possibly causing vehicle sway. When be-
ing passed by larger vehicles, be prepared
for possible changes in crosswinds that
could affect vehicle handling.
Do the following if the trailer begins to sway: 1. Take your foot off the accelerator pedal to allow the vehicle to coast and steer as
straight ahead as the road conditions
allow. This combination will help stabilize
the vehicle
– Do not correct trailer sway by steering or applying the brakes.
2. When the trailer sway stops, gently ap- ply the brakes and pull to the side of the
road in a safe area.
3. Try to rearrange the trailer load so it is balanced 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.
∙ Downshift 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
towing a trailer. Anticipate stops and
brake gradually.
∙ INFINITI 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.
Technical and consumer information10-27

DOT (Department of Transportation) Quality
Grades: All passenger car tires must conform
to federal safety requirements in addition to
these grades.
Quality grades can be found where appli-
cable on the tire sidewall between tread
shoulder and maximum section width. For
example:
Treadwear 200 Traction AA Temperature A
Treadwear
The treadwear grade is a comparative rating
based on the wear rate of the tire when
tested under controlled conditions on a
specified government test course. For ex-
ample, a tire graded 150 would wear one and
one-half (1 1/2) times as well on the govern-
ment course as a tire graded 100. The rela-
tive performance of tires depends upon the
actual conditions of their use, however, and
may depart significantly from the norm due
to variations in driving habits, service prac-
tices and differences in road characteristics
and climate.
Traction AA, A, B and C
The traction grades, from highest to lowest,
are AA, A, B, and C. Those grades represent
the tire’s ability to stop on wet pavement as
measured under controlled conditions onspecified government test surfaces of as-
phalt and concrete. A tire marked C may have
poor traction performance.
WARNING
The traction grade assigned to this tire is
based on straight-ahead braking traction
tests, and does not include acceleration,
cornering, hydroplaning, or peak traction
characteristics.
Temperature A, B and C
The temperature grades are A (the highest),
B, and C, representing the tire’s resistance to
the generation of heat, and its ability to dis-
sipate heat when tested under controlled
conditions on a specified indoor laboratory
test wheel. Sustained high temperature can
cause the material of the tire to degenerate
and reduce tire life, and excessive tempera-
ture can lead to sudden tire failure. The grade
C corresponds to a level of performance
which all passenger car tires must meet under
the Federal Motor Safety Standard No. 109.
Grades B and A represent higher levels of
performance on the laboratory test wheel
than the minimum required by law.
WARNING
The temperature grade for this tire is es-
tablished for a tire that is properly inflated
and not overloaded. Excessive speed,
under-inflation, or excessive loading, either
separately or in combination, can cause
heat build-up and possible tire failure.
UNIFORM TIRE QUALITY GRADING
Technical and consumer information10-29

Genuine INFINITI Service Manuals for this
model year and prior can be purchased. A
Genuine INFINITI Service Manual is the best
source of service and repair information for
your vehicle. This manual is the same one
used by the factory-trained technicians
working at INFINITI retailers. Genuine
INFINITI Owner’s Manuals can also be pur-
chased.
For USA
For current pricing and availability of Genuine
INFINITI Service Manuals, contact:
www.infiniti-techinfo.com
For current pricing and availability of Genuine
INFINITI Owner’s Manuals, contact:
1-800-247-5321
For Canada
To purchase a copy of a Genuine INFINITI
Service Manual or Owner’s Manual, for this
model year and prior, please contact your
nearest INFINITI retailer. For the phone num-
ber and location of an INFINITI retailer in
your area call the INFINITI Satisfaction Cen-
ter at 1-800-361-4792 and a bilingual
INFINITI representative will assist you.
OWNER’S MANUAL/SERVICE
MANUAL ORDER INFORMATION
Technical and consumer information10-33

Changing engine oil.............8-7
Changing engine oil filter .........8-8
Checking engine oil level ..........8-6
Engine oil ...................8-6
Engine oil and oil filter
recommendation ..............10-6
Engine oil viscosity ............10-6
Outside mirrors .................3-37
Overhead sunglasses holder .........2-57
Overheat If your vehicle overheats ..........6-7
Owner's manual order form ........10-33
Owner's manual/service manual order
information..................10-33
P
Parking Parking/parking on hills .........5-176
Parkingbrake ..........2-11,2-15,2-16
Personal lights .................2-72
Power Power door locks ..............3-6
Power outlet ................2-53
Power rear windows ...........2-67
Power steering system .....5-176, 5-176
Power windows ..............2-66
Rear power windows ...........2-67
Power outlet ..................2-53
Power steering ...........5- 176, 5-176
Precautions Maintenance precautions .........8-2
On-pavement and off-road driving
precautions..................5-9 Precautions on booster
seats..........1-22,1-29,1-35,1-40
Precautions on child
restraints
.......1-22,1-29,1-35,1-40
Precautionsonseatbeltusage .....1-11
Precautions on supplemental restraint
system ....................1-43
Precautions when starting and
driving .................5-4,5-11
Predictive Forward Collision Warning
(PFCW) ....................5-159
ProPILOT Assist ...............5-108
Push starting ...................6-7
R
Radio Car phone or CB radio ..........4-45
Rainsensor...................2-36
Readiness for inspection maintenance (I/M)
test.......................10-31
Rear Cross Traffic Alert (RCTA) .......5-74
Rear power windows .............2-67
Rearview mirror ................3-36
RearView Monitor ...............4-3
Rear window and outside mirror defroster
switch......................2-39
Rear window wiper and washer
switches .....................2-37
Recommended Fluids .............10-2
Recorders Event Data ................10-32
Refrigerant recommendation ........10-7
Registering a vehicle in another
country ....................10-10 Remote Engine Start
.........3-21, 5-18
Reporting safety defects (US only) . . . .10-30
Roadside assistance program .........6-2
Roof rack ................2-61, 2-62
S
Safety Child safety rear door lock .........3-7
Child seat belts . . .1-22, 1-29, 1-35, 1-40
Reporting safety defects (US only) . .10-30
Seat adjustment Front power

seat adjustment .......1-3
Second row bench seats ..........1-4
Seatback pockets ...............2-55
Seat belt Childsafety.................1-19
Infantsandsmallchildren ........1-20
Injured Person ...............1-14
Largerchildren...............1-20
Precautionsonseatbeltusage .....1-11
Pregnant women .............1-14
Seat belt extenders ............1-18
Seat belt maintenance ..........1-19
Seat belts ...............1-11,7-6
Three-point type with retractor .....1-14
Seat belt extenders ..............1-18
Seat belt warning light .........1-14,2-15
Seats 2nd row bench seat adjustment .....1-4
Adjustment ..................1-2
Armrests ...................1-5
Automatic drive positioner ....3-38, 3-41
Front seats ..................1-2
Heatedseats................ 2-48
11-5

Seats/floor mats................7-5
Security indicator light ............2-17
Security system (INFINITI vehicle immobilizer system),
engine start ..........2-33,3-4,5-17
Security systems Vehicle security system ..........2-32
Self-adjusting brakes .............8-18
Service manual order form .........10-33
Servicing air conditioner ...........4-43
Spark plug replacement ............8-14
Spark plugs ...................8-14
Specifications .................10-8
Speedometer ................2-4,2-5
Speedometer and odometer ..........2-4
SRS warning label ...............1-62
Stability control ................5-181
Standard maintenance .............9-9
Starting Before starting the engine ........5-17
Jump starting .............6-5,8-12
Precautions when starting and
driving .................5-4,5-11
Push starting .................6-7
Starting the engine ............5-17
Starting the engine ..............5-17
Steering Power steering system .....5-176, 5-176
Steering wheel .................3-34
Stoplight....................8-24
Storage.....................2-55
Storagebin...................2-60
Storagetray ..................2-56
Sunglasses case ................2-57
Sunglasses holder ...............2-57
Sunroof ......................7-5 Sun visors
....................3-35
Supplemental air bag warning labels ....1-62
Supplemental air bag warning
light....................1-62,2-15
Supplemental front impact air bag
system......................1-50
Supplemental restraint system Informationandwarninglabels.....1-62
Precautions on supplemental restraint
system ....................1-43
Supplemental restraint system
(Supplemental air bag system) ........1-43
Switch Autolight switch ..............2-40
Automatic power window switch ....2-67
Fog light switch ..............2-46
Hazard warning flasher switch ......6-2
Headlight aiming control .........2-44
Headlight and turn signal switch ....2-39
Instrument brightness control ......2-45
Power door lock switch ..........3-6
Rear window and outside mirror defroster
switch....................2-39
Rear window wiper and washer
switches ...................2-37
Turn signal switch .............2-45
T
Tachometer ...................2-6
Temperature gauge Engine coolant temperature gauge ....2-6
Theft (INFINITI vehicle immobilizer system),
engine start ..........2-33,3-4,5-17 Three-way catalyst
...............5-4
Tire Flat tire ....................6-3
Tire and Loading Information label . .10-12
Tire chains ................. 8

-35
Tirepressure................8-26
Tirerotation ................8-36
Types of tires ................8-32
Uniform tire quality grading ......10-29
Wheels and tires .............. 8-26
Wheel/tire size ...............10-9
Tire pressure Low tire pressure warning light .....2-12
Tire Pressure Monitoring System (TPMS) . .5-5
Top tether strap child restraint .......1-26
Towing 4-wheel drive models ...........6-10
Flattowing................10-28
Towing load/specification .......10-22
Towtrucktowing..............6-8
Trailertowing...............10-18
Towing a trailer ...............10-18
Transceiver HomeLink® Universal
Transceiver......... 2-72, 2-73, 2-74,
2-75, 2-75, 2-76
Transmission Continuously Variable Transmission (CVT)
fluid......................8-9
Driving with Continuously Variable
Transmission (CVT) ............5-19
Travel (See registering a vehicle in another
country) ....................10-10
Trip odometer ...............2-4,2-5
Trunklight.................... 2-72
Turn signal switch ............... 2-45
11-6