2021 INFINITI Q50 fuel cap

driving a long distance at high speeds
may damage the tires.— Do not drive at speeds above 50 MPH (80 km/h) and do not drive
more than approximately 93 miles
(150 km) with a punctured run-
flat tire. The actual distance the
vehicle can be driven on a flat tire
depends on outside temperature,
vehicle load, road conditions and
other factors.
— If you detect any unusual sounds or vibrations while driving with a
punctured run-flat tire, pull off
the road to a safe location and
stop the vehicle as soon as possi-
ble. The tire may be seriously
damaged and need to be replaced.
. Since the spare tire is not equipped
with the TPMS, when a spare tire is
mounted or a wheel is replaced, the
TPMS will not function and the low
tire pressure warning light will flash
for approximately 1 minute. The light
will remain on after the 1 minute.
Have your tires replaced and/or
TPMS system reset as soon as pos-
sible. It is recommended you visit an
INFINITI retailer for these services.
. Replacing tires with those not origin-
ally 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 the malfunction indicator light comes on
steady or blinks while the engine is running,
it may indicate a potential emission control
malfunction.
The malfunction indicator light 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 US 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 remains on 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.
(See “Readiness for Inspection/Mainte-
nance (I/M) test (US only)” (P.10-23).)
Operation:
The malfunction indicator light will come on
in one of two ways:
.
Malfunction indicator light on steady —
An emission control system malfunction
has been detected. Check the fuel-filler
cap if the Loose Fuel Cap warning
appears in the vehicle information dis-
play. If 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 recommended you visit an
INFINITI retailer for this service. You do
not need to have your vehicle towed to
the retailer.
. Malfunction indicator light blinking — An
engine misfire has been detected which
may damage the emission control sys-
tem.
Instruments and controls2-15

2-22Instruments and controls
reaches the empty (0) position.
There is a small reserve of fuel remaining in
the tank when the fuel gauge reaches the
empty (0) position.
11. Low washer fluid warning
This warning appears when the washer tank
fluid is at a low level. Add washer fluid as
necessary. (See “Window washer fluid” (P.8-
10).)
12. Door/trunk open warning
This warning appears if any of the doors
and/or the trunk lid are open or not closed
securely. The vehicle icon indicates which
door or the trunk lid is open on the display.
13. Intelligent Key system warning
This warning appears if there is a malfunc-
tion in the Intelligent Key system.
If this warning appears while the engine is
stopped, the engine cannot be started. If this
warning appears while the engine is running,
the vehicle can be driven. However, in these
cases, have the system checked as soon as
possible. It is recommended you visit an
INFINITI retailer for this service.
14. Loose Fuel Cap warning
This warning appears when the fuel-filler
cap is not tightened correctly after thevehicle has been refueled. (See “Fuel-filler
cap” (P.3-25).)
15. Tire Pressure Low - Add Air
warning
This warning appears when the low tire
pressure warning light in the meter illumi-
nates and low tire pressure is detected. The
warning appears each time the ignition
switch is placed in the ON position as long
as the low tire pressure warning light
remains illuminated. If this warning appears,
stop the vehicle and adjust the pressure to
the recommended COLD tire pressure
shown on the Tire and Loading Information
label. (See “Low tire pressure warning light”
(P.2-13) and “Tire Pressure Monitoring
System (TPMS)” (P.5-5).)
16. Flat Tire - Visit dealer warning
(if so equipped)
This warning appears when the low tire
pressure warning light in the meter illumi-
nates and one or more flat tires are detected
while driving. A chime also sounds for
approximately 10 seconds. (See “Low tire
pressure warning light” (P.2-13) and “Tire
Pressure Monitoring System (TPMS)” (P.5-
5).)
17. Low oil pressure warning
This warning appears if low engine oil
pressure is detected. If the warning appears
during normal driving, pull off the road in a
safe area, stop the engine immediately and
call an INFINITI retailer or other authorized
repair shop.
The low oil pressure warning is not designed
to indicate a low oil level. Use the dipstick to
check the oil level. (See “Engine oil” (P.8-7).)
18. All-Wheel Drive (AWD) warning
(if so equipped)
This warning appears when the Intelligent
All-Wheel Drive (AWD) system is not func-
tioning properly while the engine is running.
The displayed message will vary depending
on the condition of the AWD system mal-
function. (See “Intelligent All-Wheel Drive
(AWD)” (P.5-120).)
19. Extended storage fuse warning
(if so equipped)
This warning may appear if the extended
storage fuse switch is not pushed in
(switched on). When this warning appears,
push in (switch on) the extended storage
fuse switch to turn off the warning. For
more information, see “Extended storage
fuse switch” (P.8-19).

3 Pre-driving checks and adjustments
Keys ........................................................................\
.............. 3-2Intelligent Key .............................................................. 3-2
Valet hand-off ............................................................. 3-4
Doors ........................................................................\
............ 3-4 Locking with mechanical key ................................... 3-4
Locking with inside lock knob ................................. 3-5
Locking with power door lock switch ................... 3-5
Automatic door locks ................................................. 3-5
Child safety rear door lock ....................................... 3-6
Intelligent Key system ..................................................... 3-6
Intelligent Key operating range ............................... 3-8
Door locks/unlocks precaution .............................. 3-9
Intelligent Key operation ........................................... 3-9
Battery saver system ............................................... 3-13
Warning signals ......................................................... 3-13
Troubleshooting guide ............................................. 3-14
Log-in function .......................................................... 3-15
Remote keyless entry system ...................................... 3-15 How to use remote keyless entry system .......... 3-16
Remote engine start (if so equipped) ........................ 3-19
Remote engine start operating range ................ 3-20
Remote starting the engine .................................. 3-20
Extending engine run time ..................................... 3-20
Canceling a remote engine start ........................... 3-21 Conditions the remote engine start will
not work .................................................................... 3-21
Hood ........................................................................\
.......... 3-22
Trunk lid ........................................................................\
.... 3-22 Trunk lid release switch ......................................... 3-23
Trunk open request switch ................................... 3-23
TRUNK button ......................................................... 3-23
Trunk release power cancel switch .................... 3-24
Interior trunk lid release ........................................ 3-24
Fuel-filler door ................................................................ 3-25
Opening the fuel-filler door ................................. 3-25
Fuel-filler cap ........................................................... 3-25
Tilt/telescopic steering ................................................. 3-27
Manual operation (if so equipped) ..................... 3-28
Electric operation (if so equipped) ..................... 3-28
Sun visors ........................................................................\
. 3-29
Mirrors ........................................................................\
...... 3-29 Inside mirror .............................................................. 3-29
Outside mirrors ....................................................... 3-30
Vanity mirror ............................................................ 3-32
Memory seat (if so equipped) ..................................... 3-33 Entry/exit function ................................................. 3-33
Memory storage ...................................................... 3-33
System operation .................................................... 3-34

that people become locked inside the trunk
or in the event of the loss of electrical power
such as a discharged battery.
Releasing inside the trunk
To open the trunk lid from the inside, pull the
release handleuntil the lock releases and
push up on the trunk lid. The release lever is
made of a material that glows in the dark
after a brief exposure to ambient light.
The handle is located on the back of the
trunk lid as illustrated.
Releasing from the rear seat
You can access the release handle through
the trunk pass-through (rear seat armrest).
(See “Armrest” (P.1-7).)
To open the trunk lid from the rear seat, pull
the release handle towards front of vehicle
until the lock releases.
If you cannot reach the release handle,
contact an INFINITI retailer.SPA2735
OPENING THE FUEL-FILLER
DOOR
To open the fuel-filler door, unlock the fuel-
filler door by using one of the following
operations, then push the upper left side of
the door.
. Touch the one touch unlock sensor on
one of the front door handles and then
push the door handle request switch
while carrying the Intelligent Key.
. Push the UNLOCK button on the Intel-
ligent Key twice.
. Push the power door lock switch to the
UNLOCK position. To lock, close the fuel-filler door securely
and lock all doors by operating the door
handle request switch, the LOCK button on
the Intelligent Key or the power door lock
switch.
FUEL-FILLER CAP
WARNING
.
Gasoline is extremely flammable and
highly explosive under certain condi-
tions. You could be burned or ser-
iously injured if it is misused or
mishandled. Always stop engine and
do not smoke or allow open flames or
sparks near the vehicle when refuel-
ing.
. Do not attempt to top off the fuel
tank after the fuel pump nozzle shuts
off automatically. Continued refuel-
ing may cause fuel overflow, resulting
in fuel spray and possibly a fire.
. 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 emission control system. An in-
correct cap can result in a serious
malfunction and possible injury. It
could also cause the Malfunction
Pre-driving checks and adjustments3-25
FUEL-FILLER DOOR

3-26Pre-driving checks and adjustments
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 containers for flammable liquid.
CAUTION
. If fuel is spilled on the vehicle body,
flush it away with water to avoid
paint damage.
. Insert the cap straight into the fuel-
filler tube, then tighten the fuel-filler
cap until a single click is heard. Failure to tighten the fuel-filler cap properly
may cause the
Malfunction In-
dicator Light (MIL) to illuminate. If
the
light illuminates because the
fuel-filler cap is loose or missing,
tighten or install the cap and con-
tinue 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
recommended you visit an INFINITI
retailer for this service.
. The Loose Fuel Cap warning will
appear if the fuel-filler cap is not
properly tightened. It may take a few
driving trips for the warning to be
displayed. Failure to tighten the fuel-
filler cap properly after the Loose
Fuel Cap warning appears may cause
the
Malfunction Indicator Light
(MIL) to illuminate.
. For additional information, see “Mal-
function Indicator Light (MIL)” (P.2-
15).
JVP0204X
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
while 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.

JVP0455X
Loose Fuel Cap warning
The Loose Fuel Cap warning appears 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 warning to be displayed.
To turn off the warning, perform the
following:
1. Remove and install the fuel-filler cap assoon as possible. (See “Fuel-filler cap”
(P.3-25).)
2. Tighten the fuel-filler cap until a single click is heard.
3. Push the
orswitchon the
steering wheel for longer than 1 second to turn off the Loose Fuel Cap warning
after tightening the fuel-filler cap.
WARNING
.
Do not adjust the steering wheel
while driving. You could lose control
of your vehicle and cause an accident.
. Do not adjust the steering wheel any
closer to you than is necessary for
proper steering operation and com-
fort. The driver’s air bag inflates with
great force. If you are unrestrained,
leaning forward, sitting sideways or
out of position in any way, you are at
greater risk of injury or death in a
crash. You may also receive serious or
fatal injuries from the air bag if you
are up against it when it inflates.
Always sit back against the seatback
and as far away as practical from the
steering wheel. Always use the seat
belts.
Pre-driving checks and adjustments3-27
TILT/TELESCOPIC STEERING

8-2Do-it-yourself
When performing any inspection or main-
tenance work on your vehicle, always take
care to prevent serious accidental injury to
yourself or damage to the vehicle. The
following are general precautions which
should be closely observed.
WARNING
.Park the vehicle on a level surface,
apply the parking brake securely and
block the wheels to prevent the
vehicle from moving. Move the shift
lever to P (Park).
. Be sure the ignition switch is in the
OFF or LOCK position when per-
forming any parts replacement or
repairs.
. Never connect or disconnect the
battery or any transistorized compo-
nent while the ignition switch is in the
ON position.
. Never leave the engine or automatic
transmission related component har-
nesses disconnected while the igni-
tion switch is in the ON position.
. 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 working on your vehicle.
. Always wear eye protection when-
ever you work on your vehicle.
. 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 fuel tank and the
battery.
. Your vehicle is equipped with an
automatic engine cooling fan. It may
come on at any time without warn-
ing, even if the ignition key is in the
OFF position and the engine is not
running. To avoid injury, always dis-
connect the negative battery cable
before working near the fan.
. Because the fuel lines are under high
pressure even when the engine is off,
it is recommended you visit an
INFINITI retailer for service of the fuel filter or fuel lines.
CAUTION
.
Do not work under the hood while the
engine is hot. Turn the engine off and
wait until it cools down.
. Avoid direct contact with used en-
gine oil and coolant. Improperly dis-
posed engine oil, coolant, and/or
other vehicle fluids can damage the
environment. Always conform to lo-
cal regulations for disposal of vehicle
fluid.
This “8. Do-it-yourself” section gives in-
structions regarding only those items which
are relatively easy for an owner to perform.
A genuine INFINITI Service Manual is also
available. (See “Owner’s Manual/Service
Manual order information” (P.10-24).)
You should be aware that incomplete or
improper servicing may result in operating
difficulties or excessive emissions, and could
affect your warranty coverage. If in doubt
about any servicing, it is recommended you
have it done by an INFINITI retailer.
MAINTENANCE PRECAUTIONS

The following descriptions are provided to
give you a better understanding of the
scheduled maintenance items that should
be regularly checked or replaced. The main-
tenance schedule indicates at which mile-
age/time intervals each item requires
service.
In addition to scheduled maintenance, your
vehicle requires that some items be checked
during normal day-to-day operation. Refer
to “General maintenance” (P.9-2).
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 vehicle. Other
maintenance items and intervals are re-
quired.
When applicable, additional information can
be found in the “8. 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
validated by INFINITI.
For recommended fuel, lubricants, fluids,grease, and refrigerant, refer to “Capacities
and recommended fluids/lubricants” (P.10-
2) of this manual.
EMISSION CONTROL SYSTEM
MAINTENANCE
Drive belts*:
Check engine drive belts for wear, fraying or
cracking and for proper tension. Replace any
damaged drive belts.
Engine air filter:
Replace at specified intervals. When driving
for prolonged periods in dusty conditions,
check/replace the filter more frequently.
Engine coolant*:
Replace coolant at the specified interval.
When adding or replacing coolant, be sure to
use only Genuine NISSAN Long Life Anti-
freeze/Coolant (blue) or equivalent with the
proper mixture. (Refer to “Engine cooling
system” (P.8-3) to determine the proper
mixture for your area.)
NOTE:
Mixing any other type of coolant or the use
of non-distilled water may reduce the
recommended service interval of the cool-
ant.
Intercooler coolant:
Intercooler coolant is maintenance-free.
Engine oil and oil filter:
Replace engine oil and oil filter at the
specified intervals. For recommended oil
grade and viscosity refer to “Capacities and
recommended fluids/lubricants” (P.10-2).
Engine valve clearance*:
Inspect only if valve noise increases. Adjust
valve clearance if necessary.
Evaporative emissions control vapor lines*:
Check vapor lines for leaks or looseness.
Tighten connections or replace parts as
necessary.
Fuel lines*:
Check the fuel hoses, piping and connections
for leaks, looseness, or deterioration. Tight-
en connections or replace parts as necessary.
Spark plugs:
Replace at specified intervals. Install new
plugs of the type as originally equipped.
CHASSIS AND BODY MAINTE-
NANCE
Brake lines and cables:
Visually inspect for proper installation.
Check for chafing, cracks, deterioration,
and signs of leaking. Replace any deterio-
rated or damaged parts immediately.
Brake pads, rotors, drums and linings:
Maintenance and schedules9-5
EXPLANATION OF SCHEDULED
MAINTENANCE ITEMS