2021 Lexus LC500C flat tire

3628-1. Specifications
■Treadwear
The treadwear grade is a comparative
rating based on the wear rate of the
tire when tested under controlled con-
ditions on a specified government test
course.
For example, a tire graded 150 would
wear one and a half (1 - 1/2) times as well
on the government course as a tire graded
100.
The relative performa nce of tires depends
upon the actual conditions of their use.
Performance may differ significantly from
the norm due to variatio ns in driving habits,
service practices and differences in road
characteristics and climate.
■Traction AA, A, B, C
The traction grades, from highest to
lowest, are AA, A, B and C, and they
represent the tire’s ability to stop on
wet pavement as measured under con-
trolled conditions on specified govern-
ment test surfaces of asphalt and
concrete.
A tire marked C may have poor traction
performance.
Warning: The traction grade assigned to
this tire is based on braking (straight ahead) traction tests and does not include
cornering (turning) traction.
■Temperature A, B, C
The temperature grades are 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 condi-
tions 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 temperature
can lead to sudd en tire failure.
Grade C corresponds to a level of perfor-
mance which all passenger car tires must
meet under the Fede ral Motor Vehicle
Safety 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 grades of a tire
assume that it is properly inflated and not
overloaded.
Excessive speed, unde rinflation, or exces-
sive loading, either separately or in combi-
nation, can cause heat buildup and
possible tire failure.
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation
pressureTire pressure when the vehicle has been parked for three hours or
more, or has not been driven more than 1 mile or 1.5 km under that
condition
Maximum inflation
pressureThe maximum cold inflated pressure to which a tire may be inflated,
shown on the sidewall of the tire
Recommended
inflation pressureCold tire inflation pressure recommended by a manufacturer

3648-1. Specifications
Vehicle maximum
load on the tireThe load on an individual tire that is determined by distributing to
each axle its share of the maximum loaded vehicle weight, and divid-
ing by two
Vehicle normal load
on the tire
The load on an individual tire that is determined by distributing to
each axle its share of curb weight, accessory weight, and normal
occupant weight (distributed in accordance with Table 1
* below),
and dividing by two
Weather sideThe surface area of the rim not covered by the inflated tire
BeadThe part of the tire that is made of steel wires, wrapped or reinforced
by ply cords and that is shaped to fit the rim
Bead separationA breakdown of the bond between components in the bead
Bias ply tire
A pneumatic tire in which the ply cords that extend to the beads are
laid at alternate angles substantia lly less than 90 degrees to the cen-
terline of the tread
CarcassThe tire structure, except tread and sidewall rubber which, when
inflated, bears the load
ChunkingThe breaking away of pieces of the tread or sidewall
CordThe strands forming the plies in the tire
Cord separationThe parting of cords from adjacent rubber compounds
CrackingAny parting within the tread, sidewall, or innerliner of the tire extend-
ing to cord material
CT
A pneumatic tire with an inverted fl ange tire and rim system in which
the rim is designed with rim flanges pointed radially inward and the
tire is designed to fit on the unde rside of the rim in a manner that
encloses the rim flanges inside the air cavity of the tire
Extra load tireA tire designed to operate at high er loads and at higher inflation
pressures than the corre sponding standard tire
GrooveThe space between two adjacent tread ribs
InnerlinerThe layer(s) forming the inside surfac e of a tubeless tire that contains
the inflating medium within the tire
Innerliner separa-
tionThe parting of the innerliner from cord material in the carcass
Tire related termMeaning

3658-1. Specifications
8
Vehicle specifications
Intended outboard
sidewall
(a) The sidewall that contains 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 sidewall of an asymmetrical tire that has a
particular side that must always face outward when mounted on a
vehicle
Light truck (LT) tireA tire designated by its manufactur er as primarily intended for use
on lightweight trucks or mu ltipurpose passenger vehicles
Load ratingThe maximum load that a tire is rated to carry for a given inflation
pressure
Maximum load rat-
ingThe load rating for a tire at the maximum permissible inflation pres-
sure for that tire
Maximum permissi-
ble inflation pres-
sure
The maximum cold inflation pressure to which a tire may be inflated
Measuring rimThe rim on which a tire is fitted for physical dimension requirements
Open spliceAny parting at any junction of tread, sidewall, or innerliner that
extends to cord material
Outer diameterThe overall diameter of an inflated new tire
Overall width
The linear distance between the exteriors of the sidewalls of an
inflated tire, including elevations du e to labeling, decorations, or pro-
tective bands or ribs
Passenger car tire
A tire intended for use on passenger cars, multipurpose passenger
vehicles, and trucks, that have a gr oss vehicle weight rating (GVWR)
of 10,000 lb. or less.
PlyA layer of rubber-c oated parallel cords
Ply separationA parting of rubber compound between adjacent plies
Pneumatic tire
A mechanical device made of rubber, chemicals, fabric and steel or
other materials, that, when mounted on an automotive wheel, pro-
vides the traction and contains the gas or fluid that sustains the load
Radial ply tireA pneumatic tire in which the ply cords that extend to the beads are
laid at substantially 90 degree s to the centerline of the tread
Reinforced tireA tire designed to operate at high er loads and at higher inflation
pressures than the corre sponding standard tire
Tire related termMeaning

3668-1. Specifications
*:Table 1  Occupant loading and distribution for vehicle normal load for various desig-
nated seating capacities
Section width
The linear distance between the exteriors of the sidewalls of an
inflated tire, excluding elevations due to labeling, decoration, or pro-
tective bands
SidewallThat portion of a tire between the tread and bead
Sidewall separationThe parting of the rubber compound from the cord material in the
sidewall
Snow tire
A tire that attains a traction index equal to or greater than 110, com-
pared to the ASTM E-1136 Standa rd Reference Test Tire, when
using the snow traction test as de scribed in ASTM F-1805-00, Stan-
dard Test Method for Single Whee l Driving Traction in a Straight
Line on Snow-and Ice-Covered Surf aces, and which is marked with
an Alpine Symbol ( ) on at least one sidewall
Test rimThe rim on which a tire is fitted fo r testing, and may be any rim listed
as appropriate for use with that tire
TreadThat portion of a tire that comes into contact with the road
Tread ribA tread section running circumferentially around a tire
Tread separationPulling away of the tread from the tire carcass
Treadwear indica-
tors (TWI)The projections within th e principal grooves designed to give a visual
indication of the degree s of wear of the tread
Wheel-holding fix-
tureThe fixture used to hold the wheel and tire assembly securely during
testing
Designated seating capacity,
Number of occupantsVehicle normal load, Num- ber of occupantsOccupant distribution in a normally loaded vehicle
2 through 422 in front
5 through 1032 in front, 1 in second seat
11 through 1552 in front, 1 in second seat, 1 in
third seat, 1 in fourth seat
16 through 2072 in front, 2 in second seat, 2 in third seat, 1 in fourth seat
Tire related termMeaning

3788-3. Items to initialize
8-3.Items to initialize
Items to initialize
The following items must be initialized for normal system operation after such
cases as the battery being reconnected, or maintenance being performed on
the vehicle:
List of the items to initialize
ItemWhen to initializeReference
Tire pressure warning system
• When rotating the tires.
• When the tire inflation pressure is changed by changing tire size.
(When there are multiple speci-
fied pressures)
• After registering the ID codes.
• When the tire inflation pressure is changed such as when changing
traveling speed.
P.286
Power windows• When functioning abnormallyP.123
Lexus parking assist monitor
• The steering wheel has been moved while the battery was
being reinstalled.
• Battery power is low.Refer to “NAV- IGATION SYSTEM
OWNER’S
MANUAL”.
Message indicating maintenance is
required• After the maintenance is per- formedP.265

393What to do if... (Troubleshooting)
Is the window lock switch pressed?
The windows other than the side window at
the driver’s seat cannot be operated if the
window lock switch is pressed. ( P.125)
 The auto power off function will be
operated if the vehicle is left in ACC
or ON (the engine is not running)
for a period of time. ( P.149)
 The seat belt reminder light is flash-
ing
Are the driver and the passengers wearing
the seat belts? ( P.318)
 The parking brake indicator is on
Is the parking brake released? ( P.157)
Depending on the situation, other
types of warning buzzer may also
sound. ( P.314, 323)
 Did anyone inside the vehicle open
a door during setting the alarm?
The sensor detects it and the alarm sounds.
(  P.65)
To stop the alarm, turn the engine switch to ON, or start the engine.

Is the electronic key left inside the
vehicle?
Check the message on the multi-informa-
tion display. ( P.323)
 When a warning light turns on or a
warning message is displayed, refer
to P.314, 323.
 Slow down the vehicle, drive with
extra caution, and take your vehicle
to the nearest Lexus dealer or
authorized tire dealer as soon as
possible to have the tire replaced.
( P.327)
 Try the procedure for when the
vehicle becomes stuck in mud, dirt,
or snow. ( P.347)
The side windows or rear quar-
ter windows do not open or close
by operating the power window
switches
The engine switch is turned off
automatically
A warning buzzer sounds during
driving
An alarm is activated and the
horn sounds
A warning buzzer sounds when
leaving the vehicle
A warning light turns on or a
warning message is displayed
When a problem has occurred
If you have a flat tire
The vehicle becomes stuck

396Alphabetical index
Door lock.......................................................... 96
Open door warning buzzer .......... 97, 99
Outside rear view mirrors ....................... 119
Drive info 1/Drive info 2 .............................. 80
Drive information ........................................... 80
Driver’s seat position memory .................. 112 Driving position memory...........................112
Memory recall function ..............................114
Power easy access system .......................112
Drive-start control ........................................ 137
Driving................................................................136 Break-in tips ................................................... 137
Correct driving posture .............................23
Driving mode select switch .................. 203
Procedures .....................................................136
Winter drive tips......................................... 223
Driving mode select switch ..................... 203
Driving position memory Power easy access system .......................112
Dynamic radar cruise control with full- speed range..................................................194Warning message.......................................201
E
ECB (Electronically Controlled Brake Sys- tem) ..................................................................218
Eco drive mode ............................................ 203
Eco Driving Indicator.....................................73
Eco Driving Indicator Light .........................73
EDR (Event data recorder) ............................7
Elapsed time ..................................................... 80
Electric Power Steering (EPS) Function ............................................................ 219
Warning light .................................................315
Electronically Controlled Brake System (ECB) ..............................................................218
Electronic key .................................................. 92 Battery-saving function ........................... 104
If the electronic key does not operate properly.......................................................330
Replacing the battery............................... 297
Emergency, in case of If a warning buzzer sounds.....................314
If a warning light turns on.........................314
If a warning message is displayed ..... 323
If the battery is discharged .................... 332
If the electronic key does not operate
properly ...................................................... 330
If the engine will not start........................328
If the fuel filler do or cannot be opened
......................................................................... 330
If the soft top roof cannot be closed 338
If the vehicle is trapped in rising water ..........................................................................307
If you have a flat tire .................................. 327
If you lose your keys .................................329
If you think something is wrong............312
If your vehicle becomes stuck ............. 347
If your vehicle has to be stopped in an emergency ................................................ 306
If your vehicle needs to be towed .... 309
If your vehicle overheats ........................345
Emergency flashers .................................... 306
Engine ACC.................................................................. 149
Compartment.............................................. 274
Engine switch ................................................ 146
Fuel pump shut off system...................... 313
Hood ................................................................ 272
How to start the engine ........................... 146
Identification number ................................ 351
If the engine will not start........................328
If your vehicle has to be stopped in an emergency ................................................ 306
Ignition switch (engine switch)............. 146
Overheating .................................................345
Engine coolant...............................................276 Capacity .........................................................352
Checking ....................................................... 276
Preparing and checking before winter.......................................................................... 223
Engine coolant temperature gauge ....... 75
Engine immobilizer system ........................ 63
Engine oil .........................................................274

Alphabetical index397
Capacity ...........................................................351
Checking ....................................................... 274
Preparing and checking before winter......................................................................... 223
Warning light .................................................314
Engine oil temperature gauge ...................75
Engine switch ..................................................146 Auto power off function ...........................149
Changing the engine switch modes..149
If your vehicle has to be stopped in an
emergency ................................................306
Starting the engine ......................................146
EPS (Electric Power Steering) ................219 Function ............................................................ 219
Warning light .................................................315
Event data recorder (EDR) ............................7
F
First-aid kit storage belt ............................ 248
Flat tire ............................................................. 327 Tire pressure warning system ............. 283
Floor mats ...........................................................22
Fluid Automatic transmission ..........................353
Brake................................................................ 354
Washer ........................................................... 278
Footwell light ................................................. 244
Front passenger occupant classification system ................................................................ 41
Front seats ......................................................... 110 Adjustment....................................................... 110
Cleaning......................................................... 262
Correct driving posture .............................23
Driving position memory...........................112
Head restraints .............................................. 116
Jam protection function............................... 111
Memory recall function ..............................114
Neck heaters ............................................... 240
Power easy access system .......................112
Seat heaters .................................................. 240
Seat position memory .................................112
Seat ventilators............................................ 240 Front side marker light ................................. 161
Light switch ...................................................... 161
Replacing light bulbs ............................... 303
Front turn signal lights .................................156 Replacing light bulbs ............................... 303
Turn signal lever .......................................... 156
Fuel ....................................................................... 171 Capacity .......................................................... 351
Fuel gauge ........................................................ 75
Fuel pump shut off system...................... 313
Information ....................................................357
Refueling............................................................ 171
Type ................................................................... 351
Warning light ................................................ 318
Fuel consumption Average fuel consumpt ion after refueling
............................................................................ 80
Average fuel economy ............................. 80
Current fuel consumption ....................... 80
Fuel filler door .................................................. 171 If the fuel filler do or cannot be opened
......................................................................... 330
Refueling............................................................ 171
Fuel gauge ......................................................... 75
Fuel pump shut off system..........................313
Fuses ................................................................. 299
G
Garage door opener ................................. 250
Gauges ............................................................... 75
Gear positions ...................................................81
G-force.................................................................81
Glove box ....................................................... 246
Glove box light ............................................. 246
H
Headlights ......................................................... 161 Automatic High Beam system ............. 164
Light switch ...................................................... 161
Replacing light bulbs ............................... 303
Headlights aim .............................................. 302