maintenance INFINITI Q50 2021 Repair Manual

10-6Technical and consumer information
may cause excessive fuel consumption or
damage to the engine. If any of the above
symptoms are encountered, have your ve-
hicle checked. It is recommended you visit an
INFINITI retailer for servicing.
However, now and then you may notice
light spark knock for a short time while
accelerating or driving up hills. This is no
cause for concern, because you get the
greatest fuel benefit when there is light
spark knock for a short time under heavy
engine load.
JVT0342X
API certification mark
API service symbol
ENGINE OIL AND OIL FILTER
RECOMMENDATION
Selecting the correct oil
It is essential to choose the correct grade,
quality, and viscosity engine oil to ensure
satisfactory engine life and performance,
see “Capacities and recommended fluids/
lubricants” (P.10-2). INFINITI recommends
the use of an energy conserving oil in order
to improve fuel economy.
Select only engine oils that meet the Amer-
ican Petroleum Institute (API) certificationor International Lubricant Standardization
and Approval Committee (ILSAC) certifica-
tion and SAE viscosity standard. These oils
have the API certification mark on the front
of the container. Oils which do not have the
specified quality label should not be used as
they could cause engine damage.Oil additives
INFINITI does not recommend the use of oil
additives. The use of an oil additive is not
necessary when the proper oil type is used
and maintenance intervals are followed.
Oil which may contain foreign matter or has
been previously used should not be used.

Oil viscosity
The engine oil viscosity or thickness changes
with temperature. Because of this, it is
important that the engine oil viscosity be
selected based on the temperatures at which
the vehicle will be operated before the next
oil change. Choosing an oil viscosity other
than that recommended could cause serious
engine damage.
Selecting the correct oil filter
Your new vehicle is equipped with a high-
quality genuine NISSAN oil filter. When
replacing, use the genuine oil filter or its
equivalent for the reason described in
change intervals.
Change intervals
The oil and oil filter change intervals for your
engine are based on the use of the specified
quality oils and filters. Oil and filter other
than the specified quality, or oil and filter
change intervals longer than recommended
could reduce engine life. Damage to engines
caused by improper maintenance or use of
incorrect oil and filter quality and/or vis-
cosity is not covered by the new INFINITI
vehicle limited warranties.
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 vehicle. Operation under the following
conditions may require more frequent oil and
filter changes.
AIR CONDITIONING SYSTEM RE-
FRIGERANT AND OIL RECOM-
MENDATIONS
The air conditioner system in your INFINITI
vehicle must be charged with the refriger-
ant HFO-1234yf (R-1234yf) and NISSAN
A/C System Oil SP-A2 (PAG) or the exact
equivalents.
CAUTION
The use of any other refrigerant or oil
will cause severe damage to the air
conditioning system and will require the
replacement of all air conditioner system
components.
The refrigerant HFO-1234yf (R-1234yf) 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 automotive air conditioner system service. Air conditioner system should only
be serviced by trained and certified techni-
cians to ensure proper and safe operation
(SAE J2845). An INFINITI retailer has the
trained technicians and equipment needed
to recover and recycle your air conditioner
system refrigerant. Only new and
SAEJ2842 certified evaporator(s) shall be
used as replacement parts.
A damaged or leaking air conditioning
evaporator shall never be repaired or re-
placed with one removed from a used or
salvaged vehicle. To replace a damaged or
leaking evaporator, use only new and SAE
J2842 certified evaporator(s). It is recom-
mended that you visit an INFINITI retailer
when servicing your air conditioner system.
Technical and consumer information10-7

wwwapps.tc.gc.ca/Saf-Sec-Sur/7/
PCDB-BDPP/fc-cp.aspx?lang=fra
(French speakers).
Additional information concerning
motor vehicle safety may be obtained
from Transport Canada’s Road
Safety Information Centre at 1-
800-333-0371 or online at www.tc.
gc.ca/ roadsafety (English speakers)
or www.tc.gc.ca/securiteroutiere
(French speakers).
To notify INFINITI of any safety
concerns please contact our Consu-
mer Information Centre toll free at 1-
800- 361-4792.
WARNING
A vehicle equipped with Intelligent All-
Wheel Drive (AWD) should never be
tested using a two wheel dynamometer
(such as the dynamometers used by
some states for emissions testing), or
similar equipment. Make sure you inform
test facility personnel that your vehicle
is equipped with AWD before it is placed
on a dynamometer. Using the wrong test
equipment may result in transmission
damage or unexpected vehicle move-
ment which could result in serious vehicle
damage or personal injury.
Due to legal requirements in some states/
areas, your vehicle may be required to be in
what is called the “ready condition” for an
Inspection/Maintenance (I/M) test of the
emission control system.
The vehicle is set to the “ready condition”
when it is driven through certain driving
patterns. Usually, the “ready condition” can
be obtained by ordinary usage of the vehicle.
If a powertrain system component is re-
paired or the battery is disconnected, the
vehicle may be reset to a “not ready condi-
tion”. Before taking the I/M test, check the
vehicle’s inspection/maintenance test readi- ness condition. Place the ignition switch in
the ON position without starting the engine.
If the Malfunction Indicator Light (MIL)
comes on steady for 20 seconds and then
blinks for 10 seconds, the I/M test condition
is “not ready”. If the MIL does not blink after
20 seconds, the I/M test condition is
“ready”.
It is recommended you visit an INFINITI
retailer to set the “ready condition” or to
prepare the vehicle for testing.
Technical and consumer information10-23
READINESS FOR INSPECTION/
MAINTENANCE (I/M) TEST (US only)

Entry/exit functionMemory seat ................................................... 3-33
Event Data Recorders (EDR) ........................ 10-24
Exhaust gas (carbon monoxide) ........................ 5-4
Explanation of scheduled
maintenance items ................................................. 9-5
F
F.M.V.S.S./C.M.V.S.S. certification label .... 10-12
Filter Air cleaner housing filter ............................. 8-15
Changing engine oil and filter ...................... 8-7
Flashers (See hazard warning
flasher switch) ......................................................... 6-2
Flat tire ...................................................................... 6-3
Flat Tire - Visit dealer warning ....................... 2-22
Flat towing ......................................................... 10-20
Floor mat cleaning ................................................. 7-5
Floor mat installation ............................................ 7-6
Fluid Automatic Transmission Fluid (ATF) ......... 8-9
Brake fluid ...................................................... 8-10
Capacities and
recommended fluids/lubricants ................. 10-2
Engine coolant .................................................. 8-3
Engine oil ........................................................... 8-7
Window washer fluid .................................. 8-10
Fog light switch ................................................... 2-42
Forward Emergency Braking (FEB) ............ 5-102
Forward Emergency Braking (FEB) system
warning light ......................................................... 2-13 Front passenger air bag and status light ..... 1-50
Front power seat adjustment ............................. 1-3
Front seat
Front seat adjustment .................................... 1-3
Fuel Capacities and
recommended fluids/lubricants ................. 10-2
Fuel economy ............................................... 5-119
Fuel information ........................................... 10-4
Fuel octane rating ........................................ 10-4
Fuel-filler cap .................................................. 3-25
Fuel-filler door ............................................... 3-25
Gauge .................................................................. 2-9
Fuel Efficient Driving Tips .............................. 5-118
Fuses ....................................................................... 8-17
Fusible links ........................................................... 8-18
G
Garage door opener HomeLink®Universal Transceiver ............ 2-59
Gas cap ................................................................... 3-25
Gauge ........................................................................\
. 2-6 Engine coolant temperature gauge ............ 2-8
Fuel gauge ......................................................... 2-9
Odometer ............................................................ 2-7
Speedometer ...................................................... 2-7
Tachometer ....................................................... 2-8
Trip computer ................................................. 2-27
General maintenance ............................................. 9-2 Glove box ............................................................... 2-50
H
Hazard warning flasher switch ........................... 6-2
Head restraints/headrests .................................. 1-8
Headlights
Aiming control (See Adaptive Front
lighting System (AFS)) ................................ 2-40
Headlight switch ............................................ 2-35
Heated seats ......................................................... 2-43
Heated steering wheel ....................................... 2-44
Heater Engine block heater .................................... 5-135
Heater and air conditioner ................................ 4-36
High beam assist ................................................. 2-37
Hill start assist system ..................................... 5-131
HomeLink
®Universal Transceiver .................. 2-59
Hood release ......................................................... 3-22
Hook Coat hooks ...................................................... 2-51
Trunk hooks .................................................... 2-51
Horn ........................................................................\
. 2-42
I
Ignition switch (Push-button) ................................................. 5-11
Automatic transmission models ................ 5-16
Immobilizer system .............................................. 2-31
Indicator
Vehicle information display ........................ 2-18
11-3

11-4
Indicators for operation (vehicle
information display) ............................................ 2-21
INFINITI Drive Mode Selector ......................... 5-21
INFINITI InTouch Owner’s Manual .................. 4-2
INFINITI Vehicle Immobilizer System ............ 2-31Engine start ..................................................... 2-31
Inside mirror .......................................................... 3-29
Inspection/maintenance (I/M) test ............. 10-23
Instrument brightness control ......................... 2-41
Instrument panel ..................................................... 2-5
Intelligent All-Wheel Drive (AWD) .............. 5-120
Intelligent Cruise Control (ICC) ........................ 5-71
Intelligent Cruise Control (ICC) system
ON indicator ......................................................... 2-23
Intelligent Key .......................................................... 3-2
Intelligent Key system ........................................... 3-6
Battery replacement ..................................... 8-19
Key operating range ....................................... 3-8
Key operation ................................................... 3-9
Warning signals .............................................. 3-13
Intercooler cooling system .................................. 8-5
Interior light control switch .............................. 2-57
Interior light replacement .................................. 8-23
Interior lights ......................................................... 2-56
Interior trunk lid release .................................... 3-24
ISOFIX child restraint ......................................... 1-24
J
Jump starting ........................................................... 6-5
K
Keyless entry (See remote keyless
entry system) ........................................................ 3-15
Keys ........................................................................\
.... 3-2 For Intelligent Key system ............................ 3-6
L
LabelsAir bag warning labels ................................. 1-60
Air conditioner specification label ......... 10-13
Emission control information label ........ 10-12
Engine serial number ................................. 10-12
F.M.V.S.S./C.M.V.S.S.
certification label ........................................ 10-12
Tire and Loading
information label ............................. 8-27, 10-13
Vehicle identification number (VIN) ....... 10-11
Lane Departure Warning (LDW)/Lane
Departure Prevention (LDP) ............................ 5-33
LATCH system ..................................................... 1-24
License plate Installing front license plate .................... 10-15
Light
Air bag warning light .................................... 1-60
Bulb replacement ........................................... 8-22
Fog light switch ............................................. 2-42
Headlight switch ............................................ 2-35
Interior light control switch ........................ 2-57
Interior lights ................................................... 2-56
Map lights ........................................................ 2-56 Personal lights ................................................ 2-57
Replacement ................................................... 8-22
Trunk light ....................................................... 2-59
Vanity mirror lights ....................................... 2-58
Lights Exterior and interior light replacement .... 8-23
Loading information (See vehicle
loading information) ......................................... 10-17
Lock Automatic door locks ..................................... 3-5
Door locks .......................................................... 3-4
Power door lock ............................................... 3-4
Trunk lid ........................................................... 3-22
Locking with mechanical key ............................. 3-4
Log-in function .................................................... 3-15
Loose Fuel Cap warning ....................... 2-22, 3-27
Low fuel warning light ....................................... 2-13
Low outside temperature warning ................. 2-23
Low tire pressure warning light ...................... 2-13
Low tire pressure warning system
(See Tire Pressure Monitoring
System (TPMS)) ................................ 5-5, 6-3, 8-25
M
Maintenance Battery .............................................................. 8-11
General maintenance ...................................... 9-2
Indicators for maintenance (vehicle
information display) ...................................... 2-24
Inside the vehicle ............................................. 9-3
Maintenance precautions .............................. 8-2

Maintenance requirements ........................... 9-2
Maintenance schedules ................................. 9-6
Outside the vehicle ......................................... 9-2
Seat belt maintenance ................................. 1-19
Standard maintenance ................................... 9-8
Under the hood and vehicle ......................... 9-4
Maintenance schedules ........................................ 9-6
Malfunction indicator light (MIL) .................... 2-15
Map lights .............................................................. 2-56
Master warning light ............................... 2-12, 2-16
Mechanical key (Intelligent Key system) .......... 3-3
Memory seat ......................................................... 3-33
Memory storage
Memory seat ................................................... 3-33
Meter Trip computer ................................................. 2-27
Meters and gauges ................................................ 2-6 Instrument brightness control ................... 2-41
Mirror
Inside mirror .................................................... 3-29
Outside mirrors ............................................. 3-30
Vanity mirror ................................................... 3-32
Monitor Around View
®Monitor ................................ 4-11
RearView Monitor ........................................... 4-3
Moonroof ............................................................... 2-54
Moving Object Detection (MOD) .................. 4-30
N
New vehicle break-in ........................................ 5-118
O
Odometer .................................................................. 2-7
Off-road recovery .................................................. 5-9
Oil Capacities and
recommended fluids/lubricants ................. 10-2
Changing engine oil and filter ...................... 8-7
Checking engine oil level ............................... 8-7
Engine oil ........................................................... 8-7
Engine oil viscosity ........................................ 10-7
One touch unlock sensor (See Intelligent
Key system) .............................................................. 3-9
Operation Indicators for operation ............................... 2-21
Outside air temperature .................................... 2-29
Outside mirrors .................................................... 3-30
Overheat, If your vehicle overheats .................. 6-7
Owner’s Manual/Service Manual
order information ............................................. 10-24
P
Panic alarm ............................................................ 3-17
Parking
Parking brake operation ............................. 5-20
Parking on hills ............................................. 5-122
Parking brake break-in .................................... 5-126 Personal lights ...................................................... 2-57
PERSONAL mode ............................................... 5-24
Phone
Car phone or CB radio ................................ 4-43
Power Power door lock ............................................... 3-4
Power outlet ................................................... 2-45
Power steering system .............................. 5-123
Power windows ............................................. 2-52
Power moonroof ................................................. 2-55
Power steering warning light ........................... 2-16
Pre-crash seat belts with
comfort function ................................................... 1-15
Precautions Braking precautions .................................... 5-125
Child restraints ............................................... 1-22
Cruise control ................................................. 5-69
Maintenance ..................................................... 8-2
Seat belt usage .............................................. 1-12
Supplemental restraint system .................. 1-42
When starting and driving ............................ 5-4
Predictive Forward Collision
Warning (PFCW) .............................................. 5-109
Push starting ............................................................ 6-7
Push-button ignition switch .............................. 5-11R
Radio Car phone or CB radio ................................ 4-43
Rain-sensing auto wiper system ..................... 2-34
Rapid air pressure loss .......................................... 5-9
11-5

11-6
Readiness for inspection/maintenance
(I/M) test (US only) .......................................... 10-23
Rear door lockChild safety rear door lock ........................... 3-6
Rear seats ................................................................. 1-5
Rear window and outside mirror
defroster switch ................................................... 2-35
RearView Monitor ................................................. 4-3
Recorders Event data .................................................... 10-24
Registering your vehicle in
another country ................................................. 10-11
Remote engine start ........................................... 3-19
Remote keyless entry system .......................... 3-15
Reporting safety defects ................................ 10-22
Request switch (See Intelligent
Key system) .............................................................. 3-9
Roadside assistance program ............................. 6-2
Rollover ..................................................................... 5-9
Roof Moonroof ......................................................... 2-55
Run-flat tires .......................................................... 6-4
S
Safety Child seat belts ............................................... 1-19
Reporting safety defects .......................... 10-22
Seat adjustment Front power seat adjustment ....................... 1-3
Front seats ......................................................... 1-3 Seat belt(s)
Child safety ..................................................... 1-19
Infants ............................................................... 1-20
Injured persons ............................................... 1-15
Larger children ............................................... 1-20
Pre-crash seat belts with
comfort function ............................................ 1-15
Precautions on seat belt usage ................. 1-12
Pregnant women ........................................... 1-15
Seat belt cleaning ............................................. 7-7
Seat belt extenders ....................................... 1-18
Seat belt maintenance ................................. 1-19
Seat belt warning light
and chime ............................................. 1-14, 2-12
Seat belts ......................................................... 1-12
Seat belts with pretensioners .................... 1-59
Shoulder belt height adjustment ............... 1-18
Small children .................................................. 1-20
Three-point type ............................................ 1-15
Seat(s) Driver-side memory ...................................... 3-33
Heated seats ................................................... 2-43
Seats .................................................................... 1-2
Security system Vehicle security system ............................... 2-30
Security system (INFINITI Vehicle
Immobilizer System) Engine start ..................................................... 2-31
Servicing air conditioner .................................... 4-42
Shift lever Shift lock release ........................................... 5-19 Shift lock release, Transmission ...................... 5-19
Shifting
Automatic transmission ............................... 5-16
Shoulder belt height adjustment ..................... 1-18
SNOW mode ......................................................... 5-22
Sonar system ...................................................... 5-132 Camera aiding sonar function
(models with Around View
®Monitor) ..... 4-25
Sonar system settings ...................................... 5-133
Spare tire ............................................................... 10-9
Spark plugs ............................................................ 8-14
Speedometer ............................................................ 2-7
SPORT mode ........................................................ 5-22
SPORT+ mode ...................................................... 5-22
Standard maintenance ......................................... 9-8
STANDARD mode ............................................... 5-22
Starting
Before starting the engine .......................... 5-14
Jump starting .................................................. 8-13
Precautions when starting and driving ..... 5-4
Push starting ...................................................... 6-7
Starting the engine ....................................... 5-15
Status light, Front passenger air bag ............ 1-50
Steering Direct Adaptive Steering ........................... 5-123
Heated steering wheel ................................ 2-44
Power steering system .............................. 5-123
Tilt/telescopic steering ................................ 3-27
Storage ................................................................... 2-48
Storage box ........................................................... 2-51
Sun visors ............................................................... 3-29