maintenance INFINITI QX50 2021 Owner's Manual


2021 OWNER’S MANUAL
AND MAINTENANCE INFORMATION
For your safety, read carefully and keep in this vehicle.

The information contained within this supplement revises or adds to the
“MAINTENANCE SCHEDULES” section in the “Maintenance and schedules”
section in the 2021 INFINITI QX50 Owner’s manual.
Read carefully and keep in the vehicle.
Printing: September 2020
Publication No. SU21E0 0J55U0
OWNER’S MANUAL SUPPLEMENT

30,000 miles/(48,000 km)/
48 months
Perform at number of miles, kilometers or
months, whichever comes first.
Standard maintenance:
Inspections:
• Brake lines & cables
• Brake pads & rotors
• CVT transmission fluid
• Engine drive belts*
• Fuel tank vapor vent system*
• Fuel lines/connections*
• Exhaust system
• Propeller shaft (AWD models)
• Steering gear and linkage
• Axle & suspension parts
• Differential gear oil (AWD models) (1)
• Transfer case oil (AWD models) (1)
• Drive shaft boots
• Horn, lights, signals, wipers, rear hatch/
hood lift supports
• All fluids inspected (engine, wiper, brake,
power steering, coolant)
• Engine drive belt and hose inspection
• Engine air filter• Suspension components (shocks, sub-
frame, tie rods)
• Differential and fluid (AWD models)
• Battery terminals and cables, battery test
• Tire pressure, treadwear and depth
Essentials:
• Replace engine oil & filter (2)
• Replace engine air filter (3)
• Replace brake fluid
• Tire rotation
Severe maintenance:
Inspections:
• Brake pads & rotors
• Exhaust system
• Propeller shaft (AWD models)
• Drive shaft boots
• Steering gear & linkage
• Axle & suspension parts
Essentials:
• Replace brake fluid
(1) If towing a trailer, using a camper or a
car-top carrier, or driving on rough or muddy
roads, change (not just inspect) oil every
20,000 miles (32,000 km) or 24 months.(2) If the oil replacement indicator is dis-
played, change the engine oil and filter within
two weeks or less than 500 miles (800 km).
(3) If operating mainly in dusty conditions,
more frequent maintenance may be required.
* Maintenance items and intervals with“*”
are recommended by NISSAN for reliable ve-
hicle operation. The owner need not perform
such maintenance in order to maintain the
emission warranty or manufacturer recall li-
ability. Other maintenance items and inter-
vals are required.

This manual was prepared to help you under-
stand the operation and maintenance of your
vehicle so that you may enjoy many miles
(kilometers) of driving pleasure. Please read
through this manual before operating your
vehicle.
A separate Warranty Information Booklet is
included in your Owner’s literature portfolio.
The “Maintenance and schedules” section of
this manual explains details about maintain-
ing and servicing your vehicle. Always carry
it with you when you take your vehicle to an
INFINITI retailer. The Warranty Information
Booklet contents provide complete informa-
tion about all warranties covering this ve-
hicle, the requirements to keep the warran-
ties in effect as well as the INFINITI
Roadside Assistance program.
Additionally, a separate Customer Care and
Lemon Law Information Booklet will explain
how to resolve any concerns you may have
with your vehicle, as well as clarify your
rights under your state’s lemon law.
In addition to factory-installed options, your
vehicle may also be equipped with additional
accessories installed prior to delivery. It is
recommended that you visit an INFINITI re-
tailer for details concerning the particular ac-
cessories with which your vehicle is equipped.It is important that you familiarize yourself
with all disclosures, warnings, cautions and
instructions concerning proper use of such
accessories prior to operating the vehicle
and/or accessory. It is recommended that
you visit an INFINITI retailer for details con-
cerning the particular accessories with which
your vehicle is equipped.
Before driving your vehicle, please read this
Owner's Manual carefully. This will ensure
familiarity with controls and maintenance re-
quirements, assisting you in the safe opera-
tion of your vehicle.
WARNING
IMPORTANT SAFETY INFORMATION
REMINDERS!
Follow these important driving rules to
help ensure a safe and comfortable trip for
you and your passengers!
• NEVER drive under the influence of alco-
hol or drugs.
• ALWAYS observe posted speed limits
and never drive too fast for conditions.
• ALWAYS give your full attention to
driving and avoid using vehicle features
or taking other actions that could dis-
tract you.
• ALWAYS use your seat belts and appro-
priate child restraint systems. Pre-teen
children should be seated in the rear seat.
• ALWAYS provide information about the
proper use of vehicle safety features to
all occupants of the vehicle.
• ALWAYS review this Owner’s Manual
for important safety information.
FOREWORD READ FIRST—THEN DRIVE SAFELY

Table of
contentsIllustrated table of contents
Safety-Seats, seat belts and supplemental restraint system
Instruments and controls
Pre-driving checks and adjustments
Monitor, climate, audio, phone and voice recognition systems
Starting and driving
In case of emergency
Appearance and care
Do-it-yourself
Maintenance and schedules
Technical and consumer information
Index
0
1
2
3
4
5
6
7
8
9
10
11

1 Safety-Seats, seat belts and supplemental
restraint system
Seats............................................1-2
Front power seat adjustment ..................1-3
Rear bench seat adjustment ...................1-4
Armrests .....................................1-5
Flexible seating ...............................1-5
Head restraints/headrests .......................1-7
Adjustable head restraint/headrest
components ..................................1-8
Non-adjustable head restraint/headrest
components ..................................1-8
Remove ......................................1-9
Install ........................................1-9
Adjust ...................................... 1-10
Seat belts ....................................... 1-11
Precautions on seat belt usage ...............1-11
Seat belt warning light and chime .............1-14
Injured persons .............................. 1-14
Pregnant women ............................ 1-14
Three-point type seat belt with retractor ......1-15
Seat belt extenders .......................... 1-19
Seat belt maintenance .......................1-19Child safety
.................................... 1-20
Infants ..................................... 1-20
Small Children .............................. 1-20
Larger children ............................... 1-21
Child restraints .................................. 1-22
Precautions on child restraints ................1-22
LATCH (Lower Anchors and Tethers for
CHildren) system ............................ 1-24
Rear-facing child restraint installation
using LATCH ................................ 1-27
Rear-facing child restraint installation
using the seat belts ......................... 1-29
Forward-facing child restraint installation
using LATCH ............................... 1-32
Forward-facing child restraint installation
using the seat belts ......................... 1-34
Booster seats ............................... 1-38
Supplemental Restraint System (SRS) ............1-41
Precautions on SRS .......................... 1-41
Supplemental air bag warning labels .........1-60
Supplemental air bag warning light ...........1-61

Seat belt hook
When the seat belt is not in use and when
folding down the rear seats, hook the rear
seat belts on the seat belt hooks.
SEAT BELT EXTENDERS
If, because of body size or driving position, it
is not possible to properly fit the lap/shoulder
belt and fasten it, an extender that is compat-
ible with the installed seat belts is available
for purchase. The extender adds approxi-
mately 8 in (200 mm) of length and may be
used for all seating positions.Seat belt extenders are available for the:
• Driver and front passenger seating
positions
• Rear seating positions
It is recommended that you visit an INFINITI
retailer for assistance with purchasing an ex-
tender if an extender is required.
WARNING
• Only INFINITI seat belt extenders, made
by the same company which made the
original equipment seat belts, should be
used with INFINITI seat belts.
• Adults and children who can use the
standard seat belt should not use an ex-
tender. Such unnecessary use could re-
sult in serious personal injury in the event
of an accident.
• Never use seat belt extenders to install
child restraints. If the child restraint is
not secured properly, the child could be
seriously injured or killed in a collision or
a sudden stop.
SEAT BELT MAINTENANCE
• To clean the seat belt webbing, apply a
mild soap solution or any solution recom-
mended for cleaning upholstery or carpet.
Then wipe with a cloth and allow the seat
belts to dry in the shade. Do not allow the
seat belts to retract until they are com-
pletely dry.
• If dirt builds up in the shoulder belt guide of
the seat belt anchors, the seat belts may
retract slowly. Wipe the shoulder belt guide
with a clean, dry cloth.
• Periodically check to see that the seat belt
and the metal components, such as buck-
les, tongues, retractors, flexible wires and
anchors, work properly. If loose parts, de-
terioration, cuts or other damage on the
webbing is found, the entire seat belt as-
sembly should be replaced.
LRS3035
Safety-Seats, seat belts and supplemental restraint system1-19

SUPPLEMENTAL AIR BAG
WARNING LIGHT
The supplemental air bag warning light, dis-
playingin the instrument panel, moni-
tors the circuits for the air bag systems, pre-
tensioner(s) and all related wiring.
When the ignition switch is placed in the ON
position, the supplemental air bag warning
light illuminates for about 7 seconds and then
turns OFF. This means the system is
operational. If any of the following conditions occur, the
front air bag, side air bag, curtain air bag,
knee air bag and pretensioner systems need
servicing:
• The supplemental air bag warning light re-
mains on after approximately 7 seconds.
• The supplemental air bag warning light flashes intermittently.
• The supplemental air bag warning light does not come on at all.
Under these conditions, the front air bag, side
air bag, curtain air bag, knee air bag or pre-
tensioner systems may not operate properly.
They must be checked and repaired. It is rec-
ommended that you visit an INFINITI retailer
for this service.
WARNING
If the supplemental air bag warning light is
on, it could mean that the front air bag, side
air bag, curtain air bag, knee air bag and/or
pretensioner systems will not operate in an
accident. To help avoid injury to yourself or
others, have your vehicle checked as soon
as possible. It is recommended that you
visit an INFINITI retailer for this service.
Repair and replacement procedure
The front air bags, side air bags, curtain air
bags, knee air bags and pretensioner(s) are
designed to inflate on a one-time-only basis.
As a reminder, unless it is damaged, the
supplemental air bag warning light remains
illuminated after inflation has occurred.
These systems should be repaired and/or re-
placed as soon as possible. It is recom-
mended that you visit an INFINITI retailer for
this service.
When maintenance work is required on the
vehicle, the front air bags, side air bags, cur-
tain air bags, knee air bags, pretensioner(s)
and related parts should be pointed out to the
person performing the maintenance. The ig-
nition switch should always be in the LOCK
position when working under the hood or
inside the vehicle.
LRS0100
Safety-Seats, seat belts and supplemental restraint system1-61

•When replacing a wheel without the
TPMS such as the spare tire, the TPMS
will not function and the low tire pres-
sure warning light will flash for approxi-
mately 1 minute. The light will remain on
after 1 minute. Have your tires replaced
and/or TPMS system reset as soon as
possible. It is recommended that you
visit an INFINITI retailer for these
services.
• Replacing tires with those not originally
specified by INFINITI could affect the
proper operation of the TPMS.
CAUTION
• The TPMS is not a substitute for the
regular tire pressure check. Be sure to
check the tire pressure regularly.
• If the vehicle is being driven at speeds of
less than 16 mph (25 km/h), the TPMS
may not operate correctly.
• Be sure to install the specified size of
tires to the four wheels correctly.
Malfunction Indicator Light
(MIL)
If this indicator light comes on steady or
blinks while the engine is running, it may indi-
cate a potential emission control
malfunction.
The MIL may also come on steady if the
fuel-filler cap is loose or missing, or if the
vehicle runs out of fuel. Check to make sure
the fuel-filler cap is installed and closed
tightly, and that the vehicle has at least 3
gallons (11.4 liters) of fuel in the fuel tank.
After a few driving trips, the
light should
turn off if no other potential emission control
system malfunction exists.
If this indicator light comes on steady for 20
seconds and then blinks for 10 seconds when
the engine is not running, it indicates that the
vehicle is not ready for an emission control
system inspection/maintenance test. For ad-
ditional information, see “Readiness for
Inspection/Maintenance (I/M) test”
(P. 10-32).
Master warning light
When the ignition switch is in the ON posi-
tion, the master warning light illuminates if
any of the following (if so equipped) are dis-
played on the vehicle information display:
• I-Key system warnings
• Low washer fluid warning
• Door/ liftgate open warning (when vehicle is stopped)
• Loose fuel cap warning
• Low tire pressure warning
• Flat tire warning
• Transmission system warning
• Headlight warning
• Driver Attention Support system warning
• Shipping mode warning
• All Wheel Drive (AWD) system warning
• Adaptive Front lighting System (AFS) warning
• Driving Aids malfunction warning
• Chassis Control system warning
• Engine warnings
For additional information, see “Vehicle in-
formation display” (P. 2-19).
Instruments and controls2-15

When the vehicle speed lowers to less than
approximately 16 mph (25 km/h), the head-
light uses the low beam.
To turn off the High Beam Assist system, turn
the headlight switch to the
position or
select the low beam position by placing the
lever in the neutral position.
Ambient image sensor maintenance
The ambient image sensorO1for the High
Beam Assist system is located in front of the
inside mirror. To maintain the proper opera-
tion of the High Beam Assist system and
prevent a system malfunction, be sure to ob-
serve the following:
• Always keep the windshield clean.
• Do not attach a sticker (including transpar- ent material) or install an accessory near
the ambient image sensor.
• Do not strike or damage the areas around the ambient image sensor. Do not touch the
sensor lens that is located on the ambient
image sensor. If the ambient image sensor is damaged due
to an accident, it is recommended that you
visit an INFINITI retailer.
Battery saver system
The battery saver system automatically turns
off the ignition after a period of time when
the ignition switch is left in the AUTO ACC or
ON position.
The battery saver system automatically turns
off the following lights after a period of time
when the ignition switch is placed in the OFF
position and the doors are closed:
• Headlights, when the headlight switch is in
the
orposition
• Interior lights, when left in the ON position
CAUTION
Even though the battery saver feature au-
tomatically turns off the headlights after a
period of time, you should turn the head-
light switch to the OFF position when the
engine is not running to avoid discharging
the vehicle battery.
LIC3821LIC4259
Instruments and controls2-39