2021 INFINITI QX50 service

NOTE:
This vehicle's occupant classification sensor
system generally keeps the classification
locked during driving, so it is important that
you confirm that the front passenger is prop-
erly classified prior to driving. However, the
occupant classification sensor may recalculate
the weight of the occupant under some condi-
tions (both while driving and when stopped),
so front passenger seat occupants should con-
tinue to remain seated as outlined above.
Troubleshooting
If you think the front passenger air bag status
light is incorrect:
1. If the light is ON with an adult occupyingthe front passenger seat:
• Occupant is a small adult — the air bag light is functioning as intended. The front pas-
senger air bag and passenger knee air bag
are suppressed.
However, if the occupant is not a small adult,
then this may be due to the following condi-
tions that may be interfering with the weight
sensors:
• Occupant is not sitting upright, leaning against the seatback, and centered on the
seat cushion with his/her feet comfortably
extended to the floor. • A child restraint or other object pressing
against the rear of the seatback.
• A rear passenger pushing or pulling on the back of the front passenger seat.
• Forcing the front seat or seatback against an object on the seat or floor behind it.
• An object placed under the front passenger seat.
• An object placed between the seat cushion and center console or between the seat
cushion and the door.
If the vehicle is moving, please come to a stop
when it is safe to do so. Check and correct
any of the above conditions. Restart the ve-
hicle and wait 1 minute.
NOTE:
A system check will be performed during
which the front passenger air bag status
light will remain lit for about 7 seconds
initially.
If the light is still ON after this, the person
should be advised not to ride in the front
passenger seat and the vehicle should be
checked as soon as possible. It is recom-
mended that you visit an INFINITI retailer for
this service. 2. If the light is OFF with a small adult, child
or child restraint occupying the front pas-
senger seat.
This may be due to the following condi-
tions that may be interfering with the
weight sensors:
• Small adult or child is not sitting upright, leaning against the seatback, and centered
on the seat cushion with his/her feet com-
fortably extended to the floor.
• The child restraint is not properly installed, as outlined in the “Child Restraints”
(P. 1-22) section of this manual.
• An object weighing over 4 kg (9.1 lbs.) hanging on the seat or placed in the seat-
back pocket.
• A child restraint or other object pressing against the rear of the seatback.
• A rear passenger pushing or pulling on the back of the front passenger seat.
• Forcing the front seat or seatback against an object on the seat or floor behind it.
• An object placed under the front passenger seat.
• An object placed between the seat cushion and center console.
1-54Safety-Seats, seat belts and supplemental restraint system

If the vehicle is moving, please come to a stop
when it is safe to do so. Check and correct
any of the above conditions. Restart the ve-
hicle and wait 1 minute.
NOTE:
A system check will be performed during
which the front passenger air bag status
light will remain lit for about 7 seconds
initially.
If the light is still OFF after this, the small
adult, child or child restraint should be repo-
sitioned in the rear seat and the vehicle
should be checked as soon as possible. It is
recommended that you visit an INFINITI re-
tailer for this service.
3. If the light is OFF with no front passengerand no objects on the front passenger
seat, the vehicle should be checked. It is
recommended that you visit an INFINITI
retailer as soon as possible.
Other supplemental front-impact air bag
precautions
WARNING
• Do not place any objects on the steering
wheel pad or on the instrument panel.
Also, do not place any objects between
any occupant and the steering wheel or
instrument panel. Such objects may be-
come dangerous projectiles and cause in-
jury if the front air bags inflate.
• Immediately after inflation, several
front air bag system components will be
hot. Do not touch them; you may se-
verely burn yourself.
• No unauthorized changes should be
made to any components or wiring of the
supplemental air bag system. This is to
prevent accidental inflation of the
supplemental air bag or damage to the
supplemental air bag system.
• Do not make unauthorized changes to
your vehicle's electrical system, suspen-
sion system or front end structure. This
could affect proper operation of the
front air bag system. •
Tampering with the front air bag system
may result in serious personal injury.
Tampering includes changes to the
steering wheel and the instrument panel
assembly by placing material over the
steering wheel pad and above the instru-
ment panel or by installing additional
trim material around the air bag system.
• Removing or modifying the front pas-
senger seat may affect the function of
the air bag system and result in serious
personal injury.
• Modifying or tampering with the front
passenger seat may result in serious per-
sonal injury. For example, do not change
the front seats by placing material on the
seat cushion or by installing additional
trim material, such as seat covers, on the
seat that are not specifically designed to
assure proper air bag operation. Addi-
tionally, do not stow any objects under
the front passenger seat or the seat
cushion and seatback. Such objects may
interfere with the proper operation of
the occupant classification sensor
(weight sensor).
Safety-Seats, seat belts and supplemental restraint system1-55

WARNING
• Do not place any objects between the
knee bolster and the driver’s or passen-
ger’s seat. Such objects may become
dangerous projectiles and cause injury if
a knee air bag inflates.
• Right after inflation, the knee air bag
system components will be hot. Do not
touch them; you may severely burn
yourself.
• No unauthorized changes should be
made to any components or wiring of the
knee air bag system. This is to prevent
damage to or accidental inflation of the
knee air bag system.
• Do not make unauthorized changes to
your vehicle's electrical system or sus-
pension system. This could affect proper
operation of the knee air bag system.
• Tampering with the knee air bag system
may result in serious personal injury. For
example, do not change the driver knee
bolster or install additional trim material
around the knee air bag. •
It is recommended that you visit an
INFINITI retailer for work on and around
the knee air bag. It is also recommended
that you visit an INFINITI retailer for in-
stallation of electrical equipment. The
SRS wiring harnesses* should not be
modified or disconnected. Unauthorized
electrical test equipment and probing
devices should not be used on the knee
air bag system.
*The SRS wiring harness or connectors are
yellow or orange for easy identification.
When selling your vehicle, we request that
you inform the buyer about the knee air bag
system and guide the buyer to the appropri-
ate sections in this manual.
Seat belt with pretensioner(s) (front
and rear outboard seats)
WARNING
• The pretensioner(s) cannot be reused af-
ter activation. They must be replaced to-
gether with the retractor and buckle as a
unit. •
If the vehicle becomes involved in a colli-
sion but pretensioner(s) are not acti-
vated, be sure to have the pretensioner
system checked and, if necessary, re-
placed. It is recommended that you visit
an INFINITI retailer for this service.
• No unauthorized changes should be
made to any components or wiring of the
pretensioner system. This is to prevent
damage to or accidental activation of the
pretensioner(s). Tampering with the pre-
tensioner system may result in serious
personal injury.
• It is recommended that you visit an
INFINITI retailer for work on and around
the pretensioner system. It is also recom-
mended that you visit an INFINITI re-
tailer for installation of electrical equip-
ment. Unauthorized electrical test
equipment and probing devices should
not be used on the pretensioner system.
• If you need to dispose of the pretension-
er(s) or scrap the vehicle, it is recom-
mended that you visit an INFINITI re-
tailer for this service. Incorrect disposal
procedures could cause personal injury.
Safety-Seats, seat belts and supplemental restraint system1-59

The pretensioner system may activate with
the supplemental air bag system in certain
types of collisions. Working with the seat belt
retractor, the pretensioner(s) help tighten the
seat belt when the vehicle becomes involved
in certain types of collisions, helping to re-
strain front seat occupants.
The pretensioner(s) are encased within the
seat belt retractor and to the seat belt anchor
affixed to the floor of the vehicle. These seat
belts are used the same way as conventional
seat belts.
When pretensioner(s) activate, smoke is re-
leased and a loud noise may be heard. This
smoke is not harmful and does not indicate a
fire. Care should be taken not to inhale it, as it
may cause irritation and choking. Those with
a history of a breathing condition should get
fresh air promptly.
After the pretensioner(s’) activation, load lim-
iters allow the seat belt to release webbing (if
necessary) to reduce forces against the chest.The supplemental air bag warning lightis used to indicate malfunctions in the preten-
sioner system. For additional information,
see "Supplemental air bag warning light"
(P. 1-61). If the operation of the supplemental
air bag warning light indicates there is a mal-
function, have the system checked. It is rec-
ommended that you visit an INFINITI retailer
for this service.
When selling your vehicle, we request that
you inform the buyer about the pretensioner
system and guide the buyer to the appropri-
ate sections in this Owner's Manual.
SUPPLEMENTAL AIR BAG
WARNING LABELS
Warning labels about the supplemental
front-impact air bag systems are placed in
the vehicle as shown in the illustration.
WARNING
Do not use a rear-facing child restraint on a
seat protected by an air bag in front of it. If
the air bag deploys, it may cause serious
injury or death.
WRS0885
1. SRS air bag warning labels (located on the sun visors)
1-60Safety-Seats, seat belts and supplemental restraint system

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

WARNING
• Once a front air bag, side air bag, curtain
air bag or knee air bag has inflated, the
air bag module will not function again
and must be replaced. Additionally, the
activated pretensioner(s) must also be
replaced. The air bag module and preten-
sioner(s) should be replaced. It is recom-
mended that you visit an INFINITI re-
tailer for this service. However, the air
bag module and pretensioner(s) cannot
be repaired.
• The front air bag, side air bag, curtain air
bag, knee air bag systems and the pre-
tensioner system should be inspected if
there is any damage to the front end or
side portion of the vehicle. It is recom-
mended that you visit an INFINITI re-
tailer for this service.
• If you need to dispose of a supplemental
air bag or pretensioner systems or scrap
the vehicle, it is recommended that you
visit an INFINITI retailer. Incorrect dis-
posal procedures could cause personal
injury. •
If there is an impact to your vehicle from
any direction, your Occupant Classifica-
tion Sensor (OCS) should be checked to
verify it is still functioning correctly. It is
recommended that you visit an INFINITI
retailer for this service. The OCS should
be checked even if no air bags deploy as a
result of the impact. Failure to verify
proper OCS function may result in an im-
proper air bag deployment resulting in
injury or death.
1-62Safety-Seats, seat belts and supplemental restraint system

FUEL GAUGE
The gauge indicates theapproximatefuel
level in the tank.
The gauge may move slightly during braking,
turning, acceleration, or going up or down
hills.
The gauge needle returns to 0 (Empty) after
the ignition switch is placed in the OFF
position.
The low fuel warning comes on when the
amount of fuel in the tank is getting low. Refill the fuel tank once the Low Fuel warn-
ing indicator in the vehicle information dis-
play illuminates as indicated by
Low
Fuel.
The
indicates that the fuel-filler door is
located on the driver's side of the vehicle.
CAUTION
• If the vehicle runs out of fuel, the
Malfunction Indicator Light (MIL) may
come on. Refuel as soon as possible. Af-
ter a few driving trips. the
light
should turn off. If the light remains on
after a few driving trips, have the vehicle
inspected. It is recommended that you
visit an INFINITI retailer for this service.
• For additional information, see “Mal-
function Indicator Light (MIL)”
(P. 2-15).
DISTANCE TO EMPTY (DTE)
Displays the estimated distance the vehicle
can be driven before refueling. The value is
calculated based on recent fuel economy, the
amount of fuel remaining in the fuel tank, and
the actual fuel consumption. Changes in driving patterns or conditions can
cause the DTE value to vary. As a result, the
value displayed may differ from the actual
distance that can be driven.
DTE display will change to “---” when the fuel
level in the tank is getting low, prior to the fuel
gauge reaching 0 (Empty).
NOTE:
• The DTE value after refill is estimated
based on recent fuel economy and amount
of fuel added.
• If a small amount of fuel is added, or the ignition is on during refueling, the display
may not be updated.
• Conditions that affect the fuel economy will also affect the estimated DTE value
(city/highway driving, idle time, remote
start time, terrain, seasonal weather,
added vehicle weight, added deflectors,
roof racks, etc.).
LIC3851
Instruments and controls2-7

Warning/Indicator light (red)Warning/Indicator light (yellow) Warning/Indicator light (other)
Slip indicator light
Vehicle Dynamic Control (VDC) OFF
indicator light
CHECKING LIGHTS
With all doors closed, apply the parking
brake, fasten the seat belts and place the
ignition switch in the ON position without
starting the engine. The following lights (if so
equipped) will come on:
,,,,or,
The following lights (if so equipped) come on
briefly and then go off:
or,,,,,or,,
If any light fails to come on or operate in a
way other than described, it may indicate a
burned-out bulb and/or a system malfunc-
tion. Have the system checked. It is recom-
mended that you visit an INFINITI retailer for
this service. Some indicators and warnings are also dis-
played in the vehicle information display be-
tween the speedometer and tachometer. For
additional information, see “Vehicle informa-
tion display” (P. 2-19).
WARNING/INDICATOR LIGHTS
(red)
For additional information, see “Vehicle in-
formation display” (P. 2-19).
orBrake warning
light
This light functions for the foot brake system.
Low brake fluid warning light
When the ignition switch is placed in the ON
position, the light warns of a low brake fluid
level. If the light comes on while the engine is
running, with the parking brake not applied,
stop the vehicle and perform the following:
1. Check the brake fluid level. Add brake fluid
as necessary. For additional information,
see “Brake fluid” (P. 8-10).
2. If the brake fluid level is correct, have the warning system checked. It is recom-
mended that you visit an INFINITI retailer
for this service.
2-10Instruments and controls