2021 LEXUS NX300h flat tire

4408-1. Specifications
LEXUS NX300h Owners Manual_USA_M78578_en
GrooveThe space between two
adjacent tread ribs
Innerliner
The layer(s) forming the
inside surface of a tubeless
tire that contains the inflat-
ing medium within the tire
Innerliner
separationThe parting of the innerliner
from cord material in the
carcass
Intended
outboard
sidewall
(a) The sidewall that con-
tains a whitewall, bears
white lettering, or bears
manufacturer, brand, and/or
model name molding that is
higher or deeper than the
same molding on the other
sidewall of the tire, or
(b) The outward facing side-
wall of an asymmetrical tire
that has a particular side
that must always face out-
ward when mounted on a
vehicle
Light truck
(LT) tire
A tire designated by its
manufacturer as primarily
intended for use on light-
weight trucks or multipur-
pose passenger vehicles
Load rating
The maximum load that a
tire is rated to carry for a
given inflation pressure
Maximum
load rating
The load rating for a tire at
the maximum permissible
inflation pressure for that
tire
Tire related
termMeaning
Maximum
permissible
inflation
pressureThe maximum cold inflation
pressure to which a tire may
be inflated
Measuring
rimThe rim on which a tire is fit-
ted for physical dimension
requirements
Open splice
Any parting at any junction
of tread, sidewall, or inner-
liner that extends to cord
material
Outer diam-
eterThe overall diameter of an
inflated new tire
Overall
width
The linear distance between
the exteriors of the sidewalls
of an inflated tire, including
elevations due to labeling,
decorations, or protective
bands or ribs
Passenger
car tire
A tire intended for use on
passenger cars, multipur-
pose passenger vehicles,
and trucks, that have a gross
vehicle weight rating
(GVWR) of 10,000 lb. or
less.
PlyA layer of rubber-coated
parallel cords
Ply separa-
tionA parting of rubber com-
pound between adjacent
plies
Tire related termMeaning

4418-1. Specifications
LEXUS NX300h Owners Manual_USA_M78578_en
8
Vehicle specifications
*:Table 1  Occupant loading and distri-
bution for vehicle normal load for vari-
ous designated seating capacities
Pneumatic
tire
A mechanical device made
of rubber, chemicals, fabric
and steel or other materials,
that, when mounted on an
automotive wheel, provides
the traction and contains
the gas or fluid that sustains
the load
Radial ply
tire
A pneumatic tire in which
the ply cords that extend to
the beads are laid at sub-
stantially 90 degrees to the
centerline of the tread
Reinforced
tire
A tire designed to operate
at higher loads and at
higher inflation pressures
than the corresponding
standard tire
Section
width
The linear distance between
the exteriors of the sidewalls
of an inflated tire, excluding
elevations due to labeling,
decoration, or protective
bands
SidewallThat portion of a tire
between the tread and bead
Sidewall sep-
arationThe parting of the rubber
compound from the cord
material in the sidewall
Tire related termMeaning
Snow tire
A tire that attains a traction
index equal to or greater
than 110, compared to the
ASTM E-1136 Standard
Reference Test Tire, when
using the snow traction test
as described in ASTM F-
1805-00, Standard Test
Method for Single Wheel
Driving Traction in a
Straight Line on Snow-and
Ice-Covered Surfaces, and
which is marked with an
Alpine Symbol ( ) on at
least one sidewall
Test rim
The rim on which a tire is fit-
ted for testing, and may be
any rim listed as appropri-
ate for use with that tire
Tread
That portion of a tire that
comes into contact with the
road
Tread ribA tread section running cir-
cumferentially around a tire
Tread sepa-
rationPulling away of the tread
from the tire carcass
Treadwear
indicators
(TWI)
The projections within the
principal grooves designed
to give a visual indication of
the degrees of wear of the
tread
Wheel-hold-
ing fixtureThe fixture used to hold the
wheel and tire assembly
securely during testing
Tire related termMeaning

4548-3. Initialization
LEXUS NX300h Owners Manual_USA_M78578_en
8-3.Initialization
*:If equipped
Items to initialize
The following items must be initialized for normal system operation after such
cases as the 12-volt battery being re connected, or maintenance being per-
formed on the vehicle.
List of the items to initialize
ItemWhen to initializeReference
Parking Support Brake function (for
static objects)
*After reconnecting or changing the
12-volt batteryP.259
Message indicating maintenance is
required (Except for Canada)After the maintenance is performedP.339
Tire pressure warning system
• When rotating the tires on vehi- cles with differing front and rear
tire inflation pressures
• When changing the tire inflation pressure by changing traveling
speed or load weight, etc.
•When changing the tire size
P.363
Oil maintenanceAfter the maintenance is performedP.350
Lexus parking assist monitor*
• After reconnecting or changing the 12-volt battery
• After changing a fuse
Refer to the
“NAVIGA-
TION AND MULTIME- DIA SYS- TEM
OWNER’S
MANUAL”.
Panoramic view monitor*
Power back door*P.121
Power window
When functioning abnormally
P.148
Moon roof*P.151

470What to do if... (Troubleshooting)
LEXUS NX300h Owners Manual_USA_M78578_en
Stop the vehicle in a safe place and
replace the flat tire with the spare
tire. ( P.402)
 Try the procedure for when the vehi-
cle becomes stuck in mud, dirt, or
snow. ( P.421)
When a problem has occurred
If you have a flat tire
The vehicle becomes stuck

474Alphabetical Index
LEXUS NX300h Owners Manual_USA_M78578_en
Replacing the battery...............................369
Electronically Controlled Brake System (ECB) .............................................................272
Emergency flashers ....................................380
Emergency, in case of If a warning buzzer sounds ................. 388
If a warning light turns on ..................... 388
If a warning message is displayed.....398
If the 12-volt battery is discharged ...... 414
If the electronic key does not operate properly......................................................... 412
If the fuel filler door cannot be opened .............................................................................411
If the hybrid system will not start ........409
If the vehicle is trapped in rising water .......................................................................... 381
If you have a flat tire .................................. 402
If you lose your keys.....................................411
If you think something is wrong .........386
If your vehicle becomes stuck............... 421
If your vehicle has to be stopped in an
emergency ............................................... 380
If your vehicle needs to be towed .....383
If your vehicle overheats ......................... 418
Energy monitor ............................................... 99
Engine .............................................................. 425 Accessory mode ......................................... 177
Compartment .............................................348
Engine switch................................................. 174
Hood................................................................ 346
How to start the hybrid system ............ 174
Identification number ............................... 425
If your vehicle has to be stopped in an
emergency ............................................... 380
Ignition switch (power switch) .............. 174
Overheating.................................................. 418
Power switch ................................................. 174
Engine compartment cover .................... 349
Engine coolant Capacity ......................................................... 427
Checking .........................................................351
Preparing and checking before winter .......................................................................... 279
Warning light .............................................. 389
Engine coolant temperature gauge ....... 84
Engine oil Capacity ......................................................... 426
Checking .......................................................349
Warning light .............................................. 389
Engine switch .................................................. 174
EPS (Electronic Power Steering) Function .......................................................... 272
Warning light .............................................. 390
EV drive mode................................................178
EV indicator ...................................................... 68
Event data recorder (E DR) ........................... 8
F
Flat tire ............................................................. 402
Tire pressure warning system ............ 359
Floor mats .......................................................... 24
Fluid Brake ................................................................ 429
Transmission.................................................428
Washer ...........................................................353
Fog lights Replacing light bulbs ................................375
Switch................................................................ 196
Front passenger occupant classification system ................................................................ 41
Front passenger’s seat belt reminder light .......................................................................... 393
Front seat heaters........................................300
Front seats ........................................................132 Adjustment ......................................................132
Cleaning .........................................................335
Correct driving posture ............................ 25
Driving position memory ........................ 138
Head restraints............................................... 141
Power easy access system .................... 138
Seat heaters ................................................. 300
Seat position memory .............................. 138
Front side marker lights Light switch .................................................... 190

LEXUS NX300h Owners Manual_USA_M78578_en
Alphabetical Index479
How to wear your seat belt ......................27
How your child should wear the seat belt
.............................................................................27
Pregnant women, proper seat belt use ............................................................................ 26
Reminder light and buzzer ................... 393
Seat belt extender .........................................27
Seat belt instructions for Canadian own- ers...................................................................456
Seat belt pretensioners .............................. 30
SRS warning light ......................................390
Seat heaters ................................................... 299
Seat position memory................................. 138
Seat ventilators .............................................. 301
Seating capacity................................. 164, 424
Seats Adjustment............................................132, 133
Adjustment precautions .................132, 134
Child seats/child restraint system installa-tion .....................................................................47
Cleaning......................................................... 335
Driving position memory........................ 138
Folding down the rear seatbacks........134
Front seat heaters ..................................... 300
Head restraint..................................................141
Power easy access system .................... 138
Properly sitting in the seat ........................ 25
Rear seat heaters ...................................... 300
Seat position memory .............................. 138
Seat ventilators............................................. 301
Sécurité de l’enfant Précautions avec les coussins gonflables.........................................................................460
Sensor Automatic High Beam system..............193
BSM (Blind Spot Monitor) ................... 265
Inside rear view mirror..............................145
Intuitive parking assist.............................. 248
Kick sensor....................................................... 118
Radar sensor................................................205
Rain-sensing windshield wipers.........200
Service plug ...................................................... 70 Service reminder message ..................... 339
Shift lever ......................................................... 180
Shift lock system.............................................. 181
Side airbags ...................................................... 32
Side doors.......................................................... 110
Side marker lights
Light switch .................................................... 190
Replacing light bulbs ....................375, 376
Wattage ............................................................431
Side mirrors .....................................................146 Adjusting and folding................................ 146
Blind Spot Monitor (BSM).................... 262
Heaters............................................................ 292
Side turn signal lights Replacing light bulbs ................................375
Turn signal lever .......................................... 183
Smart access system with push-button start...................................................................126Antenna location ..........................................126
Entry functions ....................................... 110, 115
Starting the hybrid system .......................174
Warning message .................................... 398
Snow tires ....................................................... 279
Spare tire Inflation pressure ....................................... 430
Storage location .........................................402
Spark plug ...................................................... 428
Specifications ................................................ 424
Speedometer ................................................... 84
Sport mode .................................................... 270
Steering wheel Adjustment ......................................................143
Heated steering wheel ............................299
Power easy access system .................... 138
Stop lights Replacing light bulbs ................................375
Storage feature ............................................305
Storage precautions...................................305
Stuck If the vehicle becomes stuck ..................421
Sun visors ..........................................................312

480Alphabetical Index
LEXUS NX300h Owners Manual_USA_M78578_en
Switch
ASC (Active Sound Control) dial ..... 188
Automatic High Beam switch ...............193
Brake hold switch........................................187
BSM (Blind Spot Monitor) main switch......................................................................... 262
Cruise control switch .............................. 237
Door lock switch............................................112
Driving mode select switch .................. 270
Driving position memory switches .... 138
Emergency flashers switch .................. 380
EV drive mode switch ..............................178
Fog light switch .............................................196
Garage door opener switches .......... 322
Heated steering wheel............................ 299
HUD (Head-up display) switches ....... 95
Ignition switch................................................ 174
LDA switch ..................................................... 231
Light switches ............................................... 190
LTA switch .................................................... 223
Meter control switches .............................. 89
Moon roof switches .................................. 150
Outside rear view mirror switches .....146
Paddle shift switches ..................................182
Parking brake switch ................................ 184
Power back door opener and closer switch................................................................117
Power switch ................................................. 174
Power window switch .............................. 148
Rear window and outside rear view mir- ror defoggers switch ............................ 292
Rear window wiper and washer switch ...........................................................................201
Seat heater switches ................................ 299
“SOS” button .................................................. 60
Tire pressure warning reset switch .. 363
Vehicle-to-vehicle distance switch .. 237
VSC off switch ............................................ 273
Window lock switch ..................................149
Windshield wipers and washer switch ................................................................ 196, 201T
Tachometer....................................................... 84
Tail lights Light switch .................................................... 190
Replacing light bulbs ................................375
Theft deterrent system Alarm....................................................................77
Immobilizer system ...................................... 75
Tire inflation pressure Maintenance data ..................................... 430
Warning light ...............................................394
Tire information ............................................ 434 Glossary ........................................................ 438
Size ....................................................................436
Tire identification number......................435
Uniform Tire Quality Grading ............ 437
Tire pressure warning system Function ......................................................... 359
Initializing........................................................363
Installing tire pres sure warning valves
and transmitters.......................................362
Registering ID codes ...............................364
Warning light ...............................................394
Tires................................................................... 357 Chains ............................................................ 280
Checking .......................................................357
Glossary ........................................................ 438
If you have a flat tire ..................................402
Inflation pressure ........................... 365, 430
Replacing .......................................................402
Rotating tires ............................................... 358
Size ................................................................... 430
Snow tires ...................................................... 279
Spare tire ........................................... 402, 430
Tire identification number......................435
Tire pressure warning system ............ 359
Uniform Tire Quality Grading ............ 437
Warning light ...............................................394
Tools.................................................................. 402
Top tether strap............................................... 57
Total load capacity ...................................... 424

484
LEXUS NX300h Owners Manual_USA_M78578_en
GAS STATION INFORMATION
Auxiliary catch lever (P.346)
Back door opener switch
* (  P.117)
Fuel filler door ( P.203)
Hood lock release lever ( P.346)
Tire inflation pressure ( P.430)
*: Vehicles with power back door
Fuel tank capacity (Ref-
erence)14.8 gal. (56 L, 12.3 Imp.gal.)
Fuel typeUnleaded gasoline onlyP.425
Cold tire inflation pres-
sureP.430
Engine oil capacity
(Drain and refill — ref-
erence)
P.426
Engine oil typeP.426
A
B
C
D
E