2018 INFINITI Q50 tire pressure

other corrosive materials, check lubrication
frequently.
Lights*:Clean the headlights on a regular
basis. Make sure that the headlights, stop
lights, tail lights, turn signal lights, and other
lights are all operating properly and installed
securely. Also check headlight aim.
Road wheel nuts (lug nuts)*: When checking
the tires, make sure no wheel nuts are
missing, and check for any loose wheel nuts.
Tighten if necessary.
Tire rotation*: Tires should be rotated every
5,000 miles (8,000 km). If your vehicle is
equipped with different sized tires in the
front and rear, tires cannot be rotated.
Tires*: Check the pressure with a gauge
often and always prior to long distance trips.
If necessary, adjust the pressure in all tires,
including the spare, to the pressure speci-
fied. Check carefully for damage, cuts or
excessive wear.
Tire Pressure Monitoring System (TPMS)
transmitter components: Replace the TPMS
transmitter grommet seal, valve core and
cap when the tires are replaced due to wear
or age.
Wheel alignment and balance: If the vehicle
should pull to either side while driving on a
straight and level road, or if you detect
uneven or abnormal tire wear, there may be
a need for wheel alignment. If the steering wheel or seat vibrates at
normal highway speeds, wheel balancing
may be needed.
For additional information regarding tires,
refer to “Important Tire Safety Information”
(US) or “Tire Safety Information” (Canada) in
the INFINITI Warranty Information Booklet.
Windshield:
Clean the windshield on a
regular basis. Check the windshield at least
every six months for cracks or other damage.
Have a damaged windshield repaired by a
qualified repair facility.
Windshield wiper blades*: Check for cracks
or wear if they do not wipe properly.
Inside the vehicle
The maintenance items listed here should be
checked on a regular basis, such as when
performing scheduled maintenance, cleaning
the vehicle, etc.
Accelerator pedal: Check the pedal for
smooth operation and make sure the pedal
does not catch or require uneven effort.
Keep the floor mat away from the pedal.
Automatic transmission P (Park) mechan-
ism: On a fairly steep hill, check that your
vehicle is held securely with the shift lever in
the P (Park) position without applying any
brakes.
Brake pedal: Check the pedal for smooth
operation. If the brake pedal suddenly goes down further than normal, the pedal feels
spongy or the vehicle seems to take longer to
stop, have your vehicle checked immediately.
It is recommended you visit an INFINITI
retailer for this service. Keep the floor mat
away from the pedal.
Brakes:
Check that the brakes do not pull the
vehicle to one side when applied.
Parking brake: Check the parking brake
operation regularly. The vehicle should be
securely held on a fairly steep hill with only
the parking brake applied. If the parking
brake needs adjusted, it is recommended you
visit an INFINITI retailer for this service.
Seats: Check seat position controls such as
seat adjusters, seatback recliner, etc. to
ensure they operate smoothly and that all
latches lock securely in every position. Check
that the head restraints move up and down
smoothly and that the locks (if so equipped)
hold securely in all latched positions.
Seat belts: Check that all parts of the seat
belt system (for example, buckles, anchors,
adjuster and retractors) operate properly
and smoothly, and are installed securely.
Check the belt webbing for cuts, fraying,
wear or damage.
Steering wheel: Check for changes in the
steering conditions, such as excessive free
play, hard steering or strange noises.
Maintenance and schedules9-3

10-12Technical and consumer information
WHEELS AND TIRES
Road wheel
TypeSize Offset in (mm)
Conventional 17 × 7.5J
1.77 (45)
18 × 7.5J 1.77 (45)
19 × 8.5J 1.97 (50)
19 × 9J 1.85 (47)
19 × 9.5J 1.97 (50)
Spare (if so equipped) 18 × 4T 0 (0)
Tire
TypeSize Pressure PSI (kPa) [Cold]
Conventional P225/55RF17 95V
35 (240)
P225/50RF18 94V
P245/40RF19 94V
245/40RF19 94W
Front: 245/40R19 94Y
Rear: 265/35R19 94W
Front: 245/40RF19 94W
Rear: 265/35RF19 94W
Spare (T-type) (if so equipped) T145/70R18 107M 60 (420)

10-16Technical and consumer information
STI0719
EMISSION CONTROL INFORMA-
TION LABEL
The emission control information label is
attached as shown.
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.

Gross Axle Weight Rating (GAWR)
for your vehicle. (See “Measurement
of weights” (P.10-21).)
Also check tires for proper inflation
pressures. See the Tire and Loading
Information label.
LOADING TIPS
.The GVW must not exceed GVWRor GAWR as specified on the F.M.
V.S.S./C.M.V.S.S. certification la-
bel.
.Do not load the front and rear axleto the GAWR. Doing so will exceed
the GVWR.
WARNING
.Properly secure all cargo to help
prevent it from sliding or shift-
ing. Do not place cargo higher
than the seatbacks. In a sudden
stop or collision, unsecured car-
go could cause personal injury.
.Do not load your vehicle any
heavier than the GVWR or the
maximum front and rear GAWRs. If you do, parts of
your vehicle can break, tire
damage could occur, or it can
change the way your vehicle
handles. This could result in loss
of control and cause personal
injury.
.Overloading could not only
shorten the life of your vehicle
and the tires, but also could
lead to hazardous vehicle hand-
ling and long braking distance.
This may cause a premature tire
malfunction, which could result
in a serious accident and perso-
nal injury. Failures caused by
overloading are not covered by
the vehicle’s warranty.
MEASUREMENT OF WEIGHTS
Secure loose items to prevent weight
shifts that could affect the balance of
your vehicle. When the vehicle is
loaded, drive to a scale and weigh
the front and the rear wheels sepa-
rately to determine axle loads. Indivi-
dual axle loads should not exceedeither of the gross axle weight ratings
(GAWR). The total of the axle loads
should not exceed the gross vehicle
weight rating (GVWR). These ratings
are given on the vehicle certification
label. If weight ratings are exceeded,
move or remove items to bring all
weights below the ratings.
Technical and consumer information10-21

11 Index
A
ABS (Anti-lock Braking System) ................... 5-131
Active Lane Control ............................................ 5-26
Active noise cancellation ................................ 5-144
Active sound enhancement ........................... 5-144
Active trace control .......................................... 5-134
Air bag systemFront-seat mounted side-impact
supplemental air bag system ..................... 1-56
Roof-mounted curtain side-impact
supplemental air bag system ..................... 1-56
Air bag warning labels ....................................... 1-59
Air bag warning light ............................... 1-59, 2-15
Air cleaner housing filter ................................... 8-21
Air conditioner
Air conditioner specification label ......... 10-16
Air conditioning system refrigerant and
lubricant recommendations ..................... 10-10
Air deflectors ..................................................... 10-18
Alarm How to stop alarm (see vehicle
security system) ............................................. 2-31
Alcohol, drugs and driving ................................ 5-10
Antenna .................................................................... 4-3
Anti-lock Braking System (ABS) ................... 5-131
Appearance care
Exterior appearance care ............................... 7-2
Interior appearance care ................................ 7-5
Armrest ...................................................................... 1-7 Ashtray ................................................................... 2-46
Audible reminders ................................................ 2-18
Autolight system .................................................. 2-36
Automatic
Automatic Transmission Fluid (ATF) ....... 8-13
Driving with automatic transmission ....... 5-16
Automatic door locks ............................................ 3-6
Automatic drive positioner ............................... 3-33
Automatic seat positioner ................................ 3-33
Avoiding collision and rollover ............................ 5-9
B
Back-up Collision Intervention (BCI) .............. 5-61
Battery .................................................................... 8-16 Battery replacement, Intelligent Key ......... 3-2
Battery saver system .................................... 2-39
Intelligent Key ................................................. 8-26
Variable voltage control system ............... 8-19
Before starting the engine ................................ 5-14
Belts (See drive belts) ......................................... 8-19
Blind Spot Intervention® (BSI) ........................ 5-49
Blind Spot Warning (BSW) ............................... 5-41
Brake
Anti-lock Braking System (ABS) ............. 5-131
Brake fluid ....................................................... 8-14
Brake force distribution ............................. 5-133
Brake system ............................................... 5-130
Parking brake operation .............................. 5-21
Brake warning light .............................................. 2-11 Break-in schedule .............................................. 5-122
Bulb check/instrument panel ........................... 2-10
Bulb replacement ................................................. 8-28
C
Capacities and
recommended fluids/lubricants ....................... 10-2
Car phone or CB radio ......................................... 4-3
Card holder ............................................................ 2-49
Catalytic converter
Three-way catalyst ......................................... 5-5
Changing intercooler coolant ........................... 8-10
Chassis and body maintenance ....................... 9-13
Chassis control ................................................... 5-136
Check tire pressure warning ............................. 2-22
Checking intercooler coolant level .................. 8-10
Child restraints ..................................................... 1-23 LATCH system ............................................... 1-26
Precautions on child restraints .................. 1-24
Child safety ............................................................ 1-21
Child safety rear door lock .................................. 3-6
Chimes Audible reminders .......................................... 2-18
Seat belt warning light and chime ............ 2-15
Circuit breaker
Fusible link ...................................................... 8-24
Cleaning exterior and interior .................... 7-2, 7-5
Clock ...................................................................... 2-29
Coat hooks ............................................................ 2-49

11-4
ON indicator ......................................................... 2-24
Intelligent Key .......................................................... 3-2
Intelligent Key system ........................................... 3-7Battery replacement ..................................... 8-26
Key operating range ....................................... 3-8
Key operation ................................................. 3-10
Warning signals .............................................. 3-14
Intercooler cooling system .................................. 8-9
Interior light control switch .............................. 2-56
Interior light replacement .................................. 8-29
Interior lights ......................................................... 2-55
Interior trunk lid release .................................... 3-25
ISOFIX child restraint ......................................... 1-26
J
Jump starting ........................................................... 6-9
K
Keyless entry (See remote keyless
entry system) ........................................................ 3-16
Keys ........................................................................\
.... 3-2 For Intelligent Key system ............................. 3-7
L
Labels
Air bag warning labels ................................. 1-59
Air conditioner specification label ......... 10-16
Emission control information label ........ 10-16
Engine serial number ................................. 10-15 F.M.V.S.S./C.M.V.S.S.
certification label ........................................ 10-15
Tire and Loading
information label ............................. 8-34, 10-16
Vehicle identification number (VIN) ...... 10-14
Lane Departure Warning (LDW)/Lane
Departure Prevention (LDP) ............................ 5-34
LATCH system ..................................................... 1-26
License plate Installing front license plate ..................... 10-17
Light Air bag warning light .................................... 1-59
Bulb replacement .......................................... 8-28
Fog light switch ............................................. 2-42
Headlight switch ............................................ 2-35
Indicator lights ................................................ 2-16
Interior light control switch ........................ 2-56
Interior lights ................................................... 2-55
Map lights ........................................................ 2-55
Personal lights ................................................ 2-55
Replacement .................................................. 8-28
Trunk light ....................................................... 2-57
Vanity mirror lights ....................................... 2-57
Warning/indicator lights and
audible reminders .......................................... 2-10
Lights Exterior and interior light replacement .... 8-29
Loading information (See vehicle
loading information) ......................................... 10-19
Lock Automatic door locks ..................................... 3-6 Door locks .......................................................... 3-4
Power door lock ............................................... 3-4
Trunk lid ........................................................... 3-23
Locking with mechanical key ............................. 3-4
Log-in function .................................................... 3-16
Loose Fuel Cap warning ....................... 2-22, 3-28
Low fuel warning light ....................................... 2-12
Low outside temperature warning ................. 2-23
Low tire pressure warning light ...................... 2-12
Low tire pressure warning system (See Tire
Pressure Monitoring
System (TPMS)) ................................ 5-5, 6-3, 8-32
M
Maintenance
Battery .............................................................. 8-16
General maintenance ...................................... 9-2
Indicators for maintenance (vehicle
information display) ...................................... 2-25
Inside the vehicle ............................................. 9-3
Maintenance log ............................................ 9-17
Maintenance precautions .............................. 8-3
Maintenance requirements ........................... 9-2
Maintenance schedules ................................. 9-6
Maintenance under severe
driving conditions .......................................... 9-16
Outside the vehicle ......................................... 9-2
Seat belt maintenance ................................. 1-20
Standard maintenance .................................... 9-7
Under the hood and vehicle ......................... 9-4
Maintenance schedules ........................................ 9-6

T
Tachometer ............................................................. 2-8
Temperature gaugeEngine coolant temperature gauge ............ 2-8
Theft (INFINITI Vehicle Immobilizer System)
Engine start ..................................................... 2-31
Thigh extension ....................................................... 1-5
Three-way catalyst ................................................ 5-5
Tilt/telescopic steering ...................................... 3-28
Tire Flat Tire - Visit dealer warning ................. 2-22
Run-flat tires .................................................... 6-4
Tire replacement indicator .......................... 2-25
Tire rotation .................................................... 8-41
Tire pressure
Low tire pressure warning light ................ 2-12
Tire Pressure Low - Add Air warning ........... 2-22
Tires
Flat tire ............................................................... 6-3
Low tire pressure
warning system ........................... 5-5, 6-3, 8-32
Run-flat tires .................................................. 8-39
Spare tire ........................................................ 8-44
Tire and Loading
information label ............................. 8-34, 10-16
Tire chains ....................................................... 8-40
Tire dressing ...................................................... 7-4
Tire pressure ................................................... 8-32
Tire Pressure Monitoring
System (TPMS) ........................... 5-5, 6-3, 8-32 Types of tires ................................................. 8-38
Uniform tire quality grading .................... 10-22
Wheel/tire size ............................................ 10-12
Wheels and tires ............................................ 8-32
Towing Flat towing ................................................... 10-22
Tow truck towing .......................................... 6-17
Towing a trailer ........................................... 10-22
TPMS Tire Pressure
Monitoring System .................... 5-5, 6-3, 8-32
TPMS, Tire pressure monitoring system TPMS with Tire Inflation Indicator ............ 5-8
Trailer towing .................................................... 10-22
Transceiver HomeLink® Universal Transceiver ........... 2-58
Transmission Automatic Transmission Fluid (ATF) ....... 8-13
Driving with automatic transmission ....... 5-16
Transmission shift lever lock release ....... 5-19
Transmitter (See remote keyless
entry system) ........................................................ 3-16
Traveling or registering in
another country ................................................ 10-14
Trip computer ....................................................... 2-27
Trip odometer ....................................................... 2-27
Trunk Interior trunk lid release .............................. 3-25
Light .................................................................. 2-57
Pass-through ..................................................... 1-7
Trunk hooks ................................................... 2-50 Trunk lid ........................................................... 3-23
Trunk lid release switch ............................... 3-24
Trunk open request switch ......................... 3-24
Trunk release power cancel switch .......... 3-25
Turn signal switch ............................................... 2-41
U
Underbody cleaning ............................................... 7-3
Uniform tire quality grading .......................... 10-22
V
Vanity mirror ......................................................... 3-32
Vanity mirror lights ............................................. 2-57
Variable voltage control system ..................... 8-19
Vehicle Dimensions ................................................... 10-13
Recovery (freeing a stuck vehicle) ............ 6-19
Vehicle Dynamic Control (VDC)
off switch ......................................................... 2-42
Vehicle dynamic control
(VDC) system ................................................ 5-132
Vehicle Dynamic Control (VDC)
warning light ................................................... 2-15
Vehicle identification number (VIN) ............ 10-14
Vehicle information display .............................. 2-19
Vehicle loading information ............................ 10-19
Vehicle security system ...................................... 2-30
Vehicle speedAverage speed ............................ 2-27
Ventilators ............................................................... 4-2
11-7

11-8
W
WarningFlat Tire - Visit dealer warning ................. 2-22
Hazard warning flasher switch .................... 6-2
Indicators for operation (vehicle
information display) ...................................... 2-21
Lights ................................................................ 2-10
Power steering warning light ..................... 2-14
Predictive Forward Collision
Warning (PFCW) ......................................... 5-112
Tire Pressure Monitoring
System (TPMS) ........................... 5-5, 6-3, 8-32
Vehicle information display ........................ 2-19
Warning lights, indicator lights and
audible reminders .......................................... 2-10
Warning labels Air bag warning labels ................................. 1-59
Warning light
Air bag warning light ........................ 1-59, 2-15
Anti-lock braking system (ABS)
warning light ................................................... 2-10
Brake warning light ....................................... 2-11
Forward Emergency Braking (FEB)
system warning light .................................... 2-11
Low fuel warning light ................................. 2-12
Low tire pressure warning light ................ 2-12
Seat belt warning light and chime ............ 2-15
Warranty Emission control system warranty ........ 10-23 Washer switch
Wiper and washer switch ........................... 2-33
Washing .................................................................... 7-2
Waxing ....................................................................... 7-2
Welcome light and farewell light function .... 3-11
Wheel/tire size ................................................... 10-12
Wheels and tires .................................................. 8-32
Care of wheels .................................................. 7-3
Cleaning aluminum alloy wheels .................. 7-3
Cleaning bright wheels .................................. 7-4
Window washer fluid ......................................... 8-15
Window(s) Cleaning ............................................................... 7-3
Power windows ............................................ 2-50
Wiper Rain-sensing auto wiper system ............... 2-34
Wiper and washer switch ........................... 2-33
Wiper blades ................................................... 8-21
Wiper and washer switch ................................. 2-33