air condition INFINITI Q50 2021 Repair Manual

JVT0220X
TIRE AND LOADING INFORMA-
TION LABEL
The cold tire pressure is shown on the Tire
and Loading Information label affixed to the
pillar as illustrated.
STI0721
AIR CONDITIONER SPECIFICA-
TION LABEL
The air conditioner specification label is
attached as shown.
Technical and consumer information10-13

10-14Technical and consumer information
Air conditioner specification label symbols:
Symbol Name Reference Graphic
Caution ISO 7000 0434
Air Conditioning System (MAC) ISO 2575 D01
MAC System Lubricant Type
(PAG–POE)
Requires Registered Technician
to Service MAC System
Flammable Refrigerant

TRACTION AA, A, B AND C
The traction grades, from highest to lowest,
are AA, A, B and C. Those grades represent
the tire’s ability to stop on wet pavement as
measured under controlled conditions on
specified government test surfaces of as-
phalt and concrete. A tire marked C may
have poor traction performance.
WARNING
The traction grade assigned to this tire is
based on straight-ahead braking trac-
tion tests, and does not include accel-
eration, cornering, hydroplaning, or peak
traction characteristics.
TEMPERATURE A, B AND C
The temperature grades A (the highest), B,
and C, representing the tire’s resistance to
the generation of heat and its ability to
dissipate heat when tested under controlled
conditions on a specified indoor laboratory
test wheel. Sustained high temperature can
cause the material of the tire to degenerate
and reduce tire life, and excessive tempera-
ture can lead to sudden tire failure. The
grade C corresponds to a level of perfor-
mance which all passenger car tires must
meet under the Federal Motor VehicleSafety Standard No. 109. Grades B and A
represent higher levels of performance on
the laboratory test wheel than the minimum
required by law.
WARNING
The temperature grade for this tire is
established for a tire that is properly
inflated and not overloaded. Excessive
speed, under-inflation, or excessive
loading, either separately or in combina-
tion, can cause heat build-up and possi-
ble tire failure.
Your INFINITI is covered by the following
emission warranties.
For USA:
.
Emission Defects Warranty
. Emissions Performance Warranty
Details of these warranties may be found
with other vehicle warranties in your War-
ranty Information Booklet that comes with
your INFINITI. If you did not receive a
Warranty Information Booklet, or it has
become lost, you may obtain a replacement
by writing to:
. INFINITI Division
Nissan North America, Inc.
Consumer Affairs Department
P.O. Box 685003
Franklin, TN 37068-5003
For Canada:
Emission Control System Warranty
Details of these warranties may be found
with other vehicle warranties in your War-
ranty and Roadside Assistance Information
that comes with your INFINITI. If you did not
receive a Warranty and Roadside Assistance
Information, or it has become lost, you may
obtain a replacement by writing to:
. Nissan Canada Inc.
5290 Orbitor Drive
Mississauga, Ontario,
Technical and consumer information10-21
EMISSION CONTROL SYSTEM
WARRANTY

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)

10-24Technical and consumer information
This vehicle is equipped with an Event Data
Recorder (EDR). The main purpose of an
EDR is to record, in certain crash or near
crash-like situations, such as an air bag
deployment or hitting a road obstacle, data
that will assist in understanding how a
vehicle’s systems performed. The EDR is
designed to record data related to vehicle
dynamics and safety systems for a short
period of time, typically 30 seconds or less.
The EDR in this vehicle is designed to record
such data as:
.How various systems in your vehicle were
operating;
. Whether or not the driver and passenger
safety belts were buckled/fastened;
. How far (if at all) the driver was depres-
sing the accelerator and/or brake pedal;
and,
. How fast the vehicle was traveling.
. Sounds are not recorded.
These data can help provide a better under-
standing of the circumstances in which
crashes and injuries occur.
NOTE: EDR data are recorded by your
vehicle only if a nontrivial crash situation
occurs; no data are recorded by the EDR
under normal driving conditions and no
personal data (e.g. name, gender, age and
crash location) are recorded. However, other
parties, such as law enforcement, could combine the EDR data with the type of
personally identifying data routinely ac-
quired during a crash investigation.
To read data recorded by an EDR, special
equipment is required and access to the
vehicle or the EDR is needed. In addition to
the vehicle manufacturer and INFINITI re-
tailer, other parties, such as law enforce-
ment, that have the special equipment, can
read the information if they have access to
the vehicle or the EDR. EDR data will only be
accessed with the consent of the vehicle
owner or lessee or as otherwise required or
permitted by law.Genuine INFINITI Service Manual for this
model year and prior can be purchased. A
genuine INFINITI Service Manual is the best
source of service and repair information for
your vehicle. This manual is the same one
used by the factory-trained technicians
working at INFINITI retailers. Genuine
INFINITI Owner’s Manuals can also be
purchased.
For USA:
For current pricing and availability of genu-
ine
INFINITI Service Manuals, contact:
www.infiniti-techinfo.com
For current pricing and availability of genu-
ineINFINITI Owner’s Manuals, contact:
1-800-247-5321
For Canada:
To purchase a copy of a genuine INFINITI
Service Manual or Owner’s Manual for this
model year and prior, contact an INFINITI
retailer. For the phone number and location
of an INFINITI retailer in your area call the
INFINITI Satisfaction Center at 1-800-361-
4792 and a bilingual INFINITI representative
will assist you.
EVENT DATA RECORDERS (EDR) OWNER’S MANUAL/SERVICE
MANUAL ORDER INFORMATION

11 Index
A
ABS (Anti-lock Braking System) ................... 5-126
Active Lane Control ............................................ 5-25
Active noise cancellation ................................. 5-137
Active sound enhancement ............................ 5-137
Active trace control .......................................... 5-129
Air bag systemFront-seat mounted side-impact
upplemental air bag system ....................... 1-57
Roof-mounted curtain side-impact
supplemental air bag system ..................... 1-57
Air bag warning labels ....................................... 1-60
Air bag warning light .............................. 1-60, 2-12
Air cleaner housing filter ................................... 8-15
Air conditioner
Air conditioner operation ............................ 4-36
Air conditioner service ................................ 4-42
Air conditioner specification label ......... 10-13
Air conditioning system refrigerant and
lubricant recommendations ....................... 4-42
Air conditioning system refrigerant and
oil recommendations .................................... 10-7
Automatic air conditioner ........................... 4-37
DUAL mode setting ..................................... 4-40
Heater and air conditioner .......................... 4-36
Servicing air conditioner ............................. 4-42
Air deflectors ...................................................... 10-16 Alarm
How to stop alarm (see vehicle
security system) ............................................. 2-31
Alcohol, drugs and driving ................................ 5-10
Android Auto .......................................................... 4-2
Antenna .................................................................. 4-43
Anti-lock Braking System (ABS) ................... 5-126
Appearance care
Exterior appearance care ............................... 7-2
Interior appearance care ................................ 7-5
Apple CarPlay
®...................................................... 4-2
Armrest ...................................................................... 1-7
Around View
®Monitor ...................................... 4-11
Audible reminders ................................................. 2-17
Autolight system .................................................. 2-36
Automatic Automatic air conditioner ........................... 4-37
Automatic Transmission Fluid (ATF) ......... 8-9
Driving with automatic transmission ....... 5-16
Automatic door locks ............................................ 3-5
Automatic seat positioner ................................ 3-33
Avoiding collision and rollover ............................ 5-9
B
Back-up Collision Intervention (BCI) .............. 5-60
Battery .................................................................... 8-11
Battery replacement, Intelligent Key ......... 3-2
Battery saver system .................................... 2-39
Intelligent Key ................................................. 8-19 Variable voltage control system ............... 8-13
Before starting the engine ................................ 5-14
Belts (See drive belts) ......................................... 8-13
Blind Spot Intervention
®(BSI) ......................... 5-48
Blind Spot Warning (BSW) .............................. 5-40
Brake
Anti-lock Braking System (ABS) ............. 5-126
Brake fluid ...................................................... 8-10
Brake force distribution ............................ 5-128
Brake system ................................................ 5-125
Parking brake operation ............................. 5-20
Brake warning light .............................................. 2-11
Break-in schedule .............................................. 5-118
Bulb check/instrument panel ............................ 2-11
Bulb replacement ................................................. 8-22
C
Camera aiding sonar function ......................... 4-25
Capacities and
recommended fluids/lubricants ....................... 10-2
Car phone or CB radio ....................................... 4-43
Card holder ............................................................ 2-50
Catalytic converter Three-way catalyst ......................................... 5-5
Changing intercooler coolant ............................. 8-6
Chassis control ................................................... 5-131
Check tire pressure warning ............................. 2-22
Checking intercooler coolant level .................... 8-6

11-2
Child restraints ..................................................... 1-22LATCH system ............................................... 1-24
Precautions on child restraints .................. 1-22
Child safety ............................................................ 1-19
Child safety rear door lock .................................. 3-6
Chimes Audible reminders .......................................... 2-17
Seat belt warning light
and chime ............................................. 1-14, 2-12
Circuit breaker
Fusible link ....................................................... 8-18
Cleaning exterior and interior .................... 7-2, 7-5
Climate control
Automatic air conditioner ........................... 4-37
Clock ...................................................................... 2-29
Coat hooks ............................................................ 2-51
Cockpit ...................................................................... 2-3
Cold weather driving ........................................ 5-134
Console box ........................................................... 2-50
Coolant Capacities and
recommended fluids/lubricants ................. 10-2
Changing engine coolant ............................... 8-5
Checking engine coolant level ...................... 8-4
Corrosion protection ............................................. 7-7
Courtesy light ....................................................... 2-59
Cruise control ....................................................... 5-69
Fixed speed cruise control (on
ICC system) ..................................................... 5-87
Intelligent Cruise Control (ICC) ................. 5-71
Cruise indicator .................................................... 2-23 Cup holders ........................................................... 2-48
Current fuel consumption ................................. 2-27
D
Daytime running light system .......................... 2-39
Defroster switch
Rear window and outside mirror
defroster switch ............................................. 2-35
Dimensions ......................................................... 10-10
Direct Adaptive Steering ................................. 5-123
Distance Control Assist (DCA) ........................ 5-91
Distance to empty ............................................... 2-27
Drive belts .............................................................. 8-13
Drive positioner .................................................... 3-33
Driver assist system indicator .......................... 2-24
Driving Cold weather driving ................................. 5-134
Driving with automatic transmission ....... 5-16
Precautions when starting and driving ..... 5-4
E
ECO drive indicator light .................................... 2-17
ECO mode ............................................................. 5-22
ECO pedal system ............................................... 5-22
EconomyFuel .................................................................. 5-119
Elapsed time ......................................................... 2-27
Elapsed time and trip odometer ..................... 2-27
Emergency Call (SOS) button .......................... 2-46
Emission control information label ............... 10-12 Emission control system warranty ............... 10-21
Engine
Before starting the engine .......................... 5-14
Break-in schedule ........................................ 5-118
Capacities and
recommended fluids/lubricants ................. 10-2
Changing engine coolant ............................... 8-5
Changing engine oil and filter ...................... 8-7
Checking engine coolant level ...................... 8-4
Checking engine oil level ............................... 8-7
Coolant temperature gauge ......................... 2-8
Emergency engine shut off ......................... 5-13
Engine block heater .................................... 5-135
Engine compartment check locations ........ 8-3
Engine cooling system ................................... 8-3
Engine oil ........................................................... 8-7
Engine oil and filter
replacement indicator ................................... 2-25
Engine oil and oil
filter recommendation .................................. 10-6
Engine oil viscosity ........................................ 10-7
Engine serial number ................................. 10-12
Engine specifications ................................... 10-8
Engine start operation indicator ............... 2-21
If your vehicle overheats ................................ 6-7
Remote engine start ..................................... 3-19
Remote engine start
operation indicator ........................................ 2-21
Starting the engine ....................................... 5-15
Engine coolant temperature gauge .................. 2-8

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

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