2021 INFINITI QX50 service

•Use only an original equipment type fuel-
filler cap as a replacement. It has a
built-in safety valve needed for proper
operation of the fuel system and emis-
sion control system. An incorrect cap can
result in a serious malfunction and pos-
sible injury. It could also cause the
Malfunction Indicator Light (MIL) to
come on.
• Never pour fuel into the throttle body to
attempt to start your vehicle.
• Do not fill a portable fuel container in the
vehicle or trailer. Static electricity can
cause an explosion of flammable liquid,
vapor or gas in any vehicle or trailer. To
reduce the risk of serious injury or death
when filling portable fuel containers:
– Always place the container on the
ground when filling.
– Do not use electronic devices when
filling.
– Keep the pump nozzle in contact with
the container while you are filling it.
– Use only approved portable fuel con-
tainers for flammable liquid.
CAUTION
• Do not use a fuel containing more than
15% ethanol in your vehicle. For addi-
tional information, see “Fuel recommen-
dation” (P. 10-3).
• The Loose Fuel Cap warning message
will be displayed if the fuel-filler cap is
not properly tightened. It may take a few
driving trips for the message to be dis-
played. Failure to tighten the fuel-filler
cap properly after the Loose Fuel Cap
warning is displayed may cause the Mal-
function Indicator Light (MIL) to
illuminate.
• Failure to tighten the fuel-filler cap
properly may cause the
Malfunc-
tion Indicator Light (MIL) to illuminate.
If the
light illuminates because the
fuel-filler cap is loose or missing, tighten
or install the cap and continue to drive
the vehicle. The
light should turn off
after a few driving trips. If thelight
does not turn off after a few driving
trips, have the vehicle inspected. It is rec-
ommended that you visit an INFINITI re-
tailer for this service. •
For additional information, see “Mal-
function Indicator Light (MIL)”
(P. 2-15).
• If fuel is spilled on the vehicle body, flush
it away with water to avoid paint
damage.
Pre-driving checks and adjustments3-29

When a new Intelligent Key is used, “Connec-
tion with the key has been done” will be dis-
played on the vehicle information display and
the memorized settings are available.
To engage the memorized settings, perform
the following:
1. Carry the Intelligent Key that is linked tothe memorized settings.
2. Unlock the doors by pushing the driver’s door handle request switch or the
button on the Intelligent Key.
3. Place the ignition switch in the ON posi- tion. The settings linked to the Intelligent
Key will start.
For additional information on using the cli-
mate control system, see “Heater and air con-
ditioner (automatic)” (P. 4-34).
For additional information, see “Monitor, cli-
mate, audio, phone and voice recognition
systems” (P. 4-2) or the separate INFINITI
InTouch™ Owner’s Manual.
SYSTEM OPERATION
The memory seat system will not work or will
stop operating under the following
conditions:
• When the vehicle speed is above 4 mph (7 km/h).
• When any of the memory switches are pushed while the memory seat is operating.
• When the switch for the driver’s seat and steering column is pushed while the
memory seat is operating.
• When the seat has already been moved to the memorized position.
• When no seat position is stored in the memory switch.
• When the shift lever is moved from P (Park) to any other position.
The memory seat system can be adjusted and
canceled. It is recommended you visit an
INFINITI retailer for this service.
3-38Pre-driving checks and adjustments

Refer to the INFINITI InTouchTMOwner’s
Manual that includes the following informa-
tion.
• INFINITI InTouch
TMServices
(if so equipped)
• Navigation system (if so equipped)
• Audio system
• Apple CarPlay®
• Android Auto
TM
• Bluetooth® Hands-Free Phone system
• Viewing information
• Other settings
• Voice recognition
• General system information
INFINITI INTOUCHTMOWNER’S
MANUAL
4-2Monitor, climate, audio, phone and voice recognition systems

• Do not use wax on the camera lens. Wipeoff any wax with a clean cloth that has
been dampened with a diluted mild clean-
ing agent, then wipe with a dry cloth.
System temporarily unavailable
When the “!” icon is displayed on the screen,
there are abnormal conditions in the Around
View® Monitor. This will not hinder normal
driving operation but the system should be
inspected. It is recommended that you visit an
INFINITI retailer for this service. When the “[X]” icon is displayed on the
screen, the camera image may be receiving
temporary electronic disturbances from sur-
rounding devices. This will not hinder normal
driving operation but the system should be
inspected. It is recommended that you visit an
INFINITI retailer for this service.
LHA5236LHA5237
4-22Monitor, climate, audio, phone and voice recognition systems

•If your vehicle sustains damage to the
parts where the camera is installed, leav-
ing it misaligned or bent, the sensing
zone may be altered and the MOD sys-
tem may not detect objects properly.
• When the temperature is extremely high
or low, the screen may not display ob-
jects clearly. This is not a malfunction.
NOTE:
The blue or green MOD icon will change to
orange if one of the following has occurred:
• When the system is malfunctioning.
• When the component temperature reaches a high level (icon will blink).
• When the Rear View camera has detected a blockage (icon will blink).
If the icon light continues to illuminate or-
ange, have the MOD system checked. It is
recommended that you visit an INFINITI re-
tailer for this service.
SYSTEM MAINTENANCE
CAUTION
• Do not use alcohol, benzine or thinner to
clean the camera. This will cause
discoloration.
• Do not damage the camera as the moni-
tor screen may be adversely affected. If dirt, rain or snow accumulates on any of the
cameras
O1, the MOD system may not oper-
ate properly. Clean the camera by wiping
with a cloth dampened with a diluted mild
cleaning agent and then wiping with a dry
cloth.
LHA4554
4-32Monitor, climate, audio, phone and voice recognition systems

–– If the surface temperature of thesteering-wheel is above the temperature
within which the system is designed to
operate, the system will not heat the
steering-wheel. This is not a malfunction. The air conditioner system in your INFINITI
vehicle is charged with a refrigerant designed
with the environment in mind.
This refrigerant does not harm the earth's
ozone layer.
Special charging equipment and lubricant is
required when servicing your INFINITI air
conditioner. Using improper refrigerants or
lubricants will cause severe damage to your
air conditioner system. For additional infor-
mation, see “Air conditioner system refriger-
ant and oil recommendations” (P. 10-7).
It is recommended that you visit an INFINITI
retailer for servicing your “environmentally
friendly” air conditioning system.
WARNING
The air conditioner system contains refrig-
erant under high pressure. To avoid per-
sonal injury, any air conditioner service
should be done only by an experienced
technician with proper equipment. There are USB/iPod® charging ports located
in the 1st row on the inside of the console box
and in the 2nd row on the back of the center
console. These ports will charge compatible
devices.
NOTE:
The USB/iPod® charging ports will not op-
erate with the display screen. Only the USB
connection port located beneath the instru-
ment panel will operate USB/iPod® devices.
LHA4564
1st row
SERVICING AIR CONDITIONER USB/iPod® CHARGING PORTS
4-42Monitor, climate, audio, phone and voice recognition systems

WARNING
• Do not leave children or adults who
would normally require the assistance of
others alone in your vehicle. Pets should
also not be left alone. They could acci-
dentally injure themselves or others
through inadvertent operation of the
vehicle. Also, on hot, sunny days, tem-
peratures in a closed vehicle could
quickly become high enough to cause se-
vere or possibly fatal injuries to people or
animals.
• Properly secure all cargo with ropes or
straps to help prevent it from sliding or
shifting. Do not place cargo higher than
the seatbacks. In a sudden stop or colli-
sion, unsecured cargo could cause per-
sonal injury.
EXHAUST GAS (carbon monoxide)
WARNING
• Do not breathe exhaust gases; they con-
tain colorless and odorless carbon mon-
oxide. Carbon monoxide is dangerous. It
can cause unconsciousness or death. •
If you suspect that exhaust fumes are
entering the vehicle, drive with all win-
dows fully open, and have the vehicle in-
spected immediately.
• Do not run the engine in closed spaces
such as a garage.
• Do not park the vehicle with the engine
running for any extended length of time.
• Keep the rear vent windows, liftgates,
doors and trunk lids (if so equipped)
closed while driving, otherwise exhaust
gases could be drawn into the passenger
compartment. If you must drive with one
of these open, follow these precautions:
1. Open all the windows.
2. Set the
air recirculation button
to off and the fan control dial to high
to circulate the air.
• If electrical wiring or other cable connec-
tions must pass to a trailer through the
seal on the liftgate or the body, follow
the manufacturer's recommendation to
prevent carbon monoxide entry into the
vehicle.
• The exhaust system and body should be
inspected by a qualified mechanic when-
ever:
a. The vehicle is raised for service. b. You suspect that exhaust fumes are
entering into the passenger
compartment.
c. You notice a change in the sound of the exhaust system.
d. You have had an accident involving damage to the exhaust system, un-
derbody, or rear of the vehicle.
THREE-WAY CATALYST
The three-way catalyst is an emission control
device installed in the exhaust system. Ex-
haust gases in the three-way catalyst are
burned at high temperatures to help reduce
pollutants.
WARNING
• The exhaust gas and the exhaust system
are very hot. Keep people, animals or
flammable materials away from the ex-
haust system components.
• Do not stop or park the vehicle over
flammable materials such as dry grass,
waste paper or rags. They may ignite and
cause a fire.
PRECAUTIONS WHEN STARTING
AND DRIVING
5-4Starting and driving

CAUTION
• Do not use leaded gasoline. Deposits
from leaded gasoline will seriously re-
duce the three-way catalyst's ability to
help reduce exhaust pollutants.
• Keep your engine tuned up. Malfunc-
tions in the ignition, fuel injection, or
electrical systems can cause over rich
fuel flow into the three-way catalyst,
causing it to overheat. Do not keep driv-
ing if the engine misfires, or if noticeable
loss of performance or other unusual op-
erating conditions are detected. Have
the vehicle inspected promptly. It is rec-
ommended that you visit an INFINITI re-
tailer for this service.
• Avoid driving with an extremely low fuel
level. Running out of fuel could cause the
engine to misfire, damaging the three-
way catalyst.
• Do not race the engine while warming it
up.
• Do not push or tow your vehicle to start
the engine.TIRE PRESSURE MONITORING
SYSTEM (TPMS)
Each tire, including the spare (if provided),
should be checked monthly when cold and
inflated to the inflation pressure recom-
mended by the vehicle manufacturer on the
vehicle placard or tire inflation pressure label.
(If your vehicle has tires of a different size
than the size indicated on the vehicle placard
or tire inflation pressure label, you should
determine the proper tire inflation pressure
for those tires.)
As an added safety feature, your vehicle has
been equipped with a Tire Pressure Monitor-
ing System (TPMS) that illuminates a low tire
pressure telltale when one or more of your
tires is significantly under-inflated. Accord-
ingly, when the low tire pressure telltale illu-
minates, you should stop and check all your
tires as soon as possible, and inflate them to
the proper pressure. Driving on a significantly
under-inflated tire causes the tire to overheat
and can lead to tire failure. Under-inflation
also reduces fuel efficiency and tire tread life,
and may affect the vehicle’s handling and
stopping ability. Please note that the TPMS is not a substitute
for proper tire maintenance, and it is the driv-
er’s responsibility to maintain correct tire
pressure, even if under-inflation has not
reached the level to trigger illumination of the
TPMS low tire pressure telltale.
Your vehicle has also been equipped with a
TPMS malfunction indicator to indicate
when the system is not operating properly.
The TPMS malfunction indicator is combined
with the low tire pressure telltale. When the
system detects a malfunction, the telltale will
flash for approximately one minute and then
remain continuously illuminated. This se-
quence will continue upon subsequent vehicle
start-ups as long as the malfunction exists.
When the malfunction indicator is illumi-
nated, the system may not be able to detect
or signal low tire pressure as intended. TPMS
malfunctions may occur for a variety of rea-
sons, including the installation of replace-
ment or alternate tires or wheels on the ve-
hicle that prevent the TPMS from functioning
properly. Always check the TPMS malfunc-
tion telltale after replacing one or more tires
or wheels on your vehicle to ensure that the
replacement or alternate tires and wheels al-
low the TPMS to continue to function
properly.
Starting and driving5-5