tires Lexus LC500 2021 / LEXUS 2021 LC500,LC500H (OM11559U) Service Manual

3978-1. Specifications
8
Vehicle specifications
Tire size (P.398)
Run-flat tire (RFT) or standard tire ( P.362)
This vehicle can be equipped with either run-flat tires (RFT) or standard tires. A
mark is molded on the sidewall of the run-flat tire.
DOT and Tire Identification Number (TIN) ( P.398)
Location of treadwear indicators ( P.313)
Tire ply composition and materials
Plies are layers of rubber-coated parallel cords. Cords are the strands which form the plies
in a tire.
Radial tires or bias-ply tires
A radial tire has “RADIAL” on the sidewall. A tire not marked “RADIAL” is a bias-ply tire.
TUBELESS or TUBE TYPE
A tubeless tire does not have a tube and air is directly put into the tire. A tube type tire has a
tube inside the tire and the tube maintains the air pressure.
Load limit at maximum cold tire inflation pressure ( P.400)
Maximum cold tire inflation pressure ( P.400)
This means the pressure to which a tire may be inflated.
Uniform tire quality grading
For details, see “Uniform Tire Quality Grading” that follows.
Tire information
Typical tire symbols
A
B
C
D
E
F
G
H
I
J

3988-1. Specifications
Summer tires or all season tires (P.314)
An all season tire has “M+S” on the sidewall. A tire not marked “M+S” is a summer tire.
Type A
DOT symbol
*
Tire Identification Number (TIN)
Tire manufacturer’s identification
mark
Tire size code
Manufacturer’s optional tire type
code (3 or 4 letters)
Manufacturing week
Manufacturing year
*:The DOT symbol cert ifies that the tire
conforms to applicable Federal Motor
Vehicle Safety Standards.
Type B
DOT symbol
*
Tire Identification Number (TIN)
Tire manufacturer’s identification
mark
Manufacturer’s code
Manufacturing week
Manufacturing year
*: The DOT symbol certifies that the tire conforms to applicable Federal Motor
Vehicle Safety Standards.
■Typical tire size information
The illustration indicates typical tire
size.
K
Typical DOT and Tire Identifica-
tion Number (TIN)
A
B
C
D
E
F
GTire size
A
B
C
D
E
F

3998-1. Specifications
8
Vehicle specifications
Tire use (P = Passenger car, T =
Temporary use)
Section width (millimeters)
Aspect ratio (tire height to section
width)
Tire construction code (R = Radial,
D = Diagonal)
Run-flat tire code
Wheel diameter (inches)
Load index (2 digits or 3 digits)
Speed symbol (alphabet with one
letter)
■Tire dimensionsSection width
Tire height
Wheel diameter Bead
Sidewall
Shoulder
Tread
Belt
Inner liner
Reinforcing rubber
Carcass
Rim lines
Bead wires
Chafer
This information has been prepared in
accordance with regulations issued by
the National Highway Traffic Safety
Administration of the U.S. Department
of Transportation.
It provides the purchasers and/or pro-
spective purchasers of Lexus vehicles
with information on uniform tire quality
grading.
Your Lexus dealer will help answer any
questions you may have as you read this
information.
■DOT quality grades
All passenger vehicle tires must con-
form to Federal Safety Requirements in
addition to these grades. Quality
grades can be found where applicable
on the tire sidewall between tread
shoulder and maximum section width.
For example: Treadwear 200 Traction AA
Temperature A
Tire section names
A
B
C
D
E
F
G
H
A
B
C
Uniform Tire Quality Grading
A
B
C
D
E
F
G
H
I
J
K

4008-1. Specifications
■Treadwear
The treadwear grade is a comparative
rating based on the wear rate of the tire
when tested under controlled condi-
tions 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

4178-3. Items to initialize
8
Vehicle specifications
8-3.Items to initialize
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
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.318
Power windows• When functioning abnormallyP.138
Lexus parking assist monitor
• The steering wheel has been moved while the 12-volt battery
was being reinstalled.
• 12-volt battery power is low.Refer to “NAV- IGATION SYSTEM
OWNER’S
MANUAL”.
Message indicating maintenance is
required• After the maintenance is per- formedP.295
Oil maintenance (LC500h)• After the maintenance is per-formedP.307

442Alphabetical index
...........................................................................136
Mirror position memory........................... 127
Outside rear view mirror defoggers . 261
Outside temperature.................................... 82
Overheating ....................................... 376, 379
P
Paddle shift switches ...... 167, 168, 173, 174
Panic mode ..................................................... 108
Parking assist sensors (intuitive parking assist) ............................................................. 225
Parking brake.................................................. 176 Indicator ........................................................ 350
Operation........................................................ 176
Parking brake engaged warning buzzer...........................................................................178
Warning message.......................................178
Parking lights .................................................... 181 Light switch ...................................................... 181
Replacing light bulbs................................ 336
PCS (Pre-Collision System) ...................200 Function ..........................................................200
PCS OFF switch ........................................ 202
Warning light ............................................... 349
Personal lights................................................. 271
Pop-up display ................................................. 84
Pop Up Hood................................................... 36
Power control unit.......................................... 65
Power control unit coolant ......................308 Capacity .........................................................390
Checking ...................................................... 308
Preparing and checking before winter.........................................................................250
Power easy access system ........................ 127
Power outlet ...................................................277
Power steering (Elect ric power steering
system).......................................................... 243 Warning light ...............................................348
Warning message..................................... 357
Power switch (engine switch) ........152, 156 Auto power off function ................155, 160
Changing the power switch (engine switch) modes ................................ 155, 159
If your vehicle has to be stopped in an emergency ................................................ 338
Starting the hybrid system (engine) ................................................................. 152, 156
Power windows ............................................. 138 Door lock linked window operation . 139
Jam protection function ........................... 139
Operation ....................................................... 138
Window lock switch.................................. 139
Pre-Collision System (PCS) ...................200 Function ......................................................... 200
PCS OFF switch ........................................202
Warning light ...............................................349
R
Radar cruise control (dynamic radar cruise control with full-speed range)............... 214
Radiator ........................................................... 309
Rear side marker lights ................................ 181 Light switch ...................................................... 181
Replacing light bulbs ................................336
Rear turn signal lights .................................. 175 Replacing light bulbs ................................336
Turn signal lever ...........................................175
Rear view mirror Inside rear view mirror ..............................134
Outside rear view mirrors...................... 135
Rear window defogger ...............................261
Refueling ............................................................ 191 Capacity ........................................................ 388
Fuel types ...................................................... 388
If the fuel filler do or cannot be opened
......................................................................... 366
Opening the fuel tank cap ....................... 191
Regenerative braking ................................... 63
Remote Touch .............................................. 254
Replacing Electronic key battery ............................. 330
Fuses.................................................................. 331
Light bulbs .....................................................336
Tires ....................................................................321

Alphabetical index443
Resetting the message indicating mainte-nance is required ...................................... 295
Rev indicator .................................................... 83
Rev peak............................................................. 84
Run-flat tires......................................... 315, 362
S
Seat belt reminder ligh t...............................351
Seat belts............................................................ 24 Automatic Locking Retractor ................ 26
Child restraint system installation ......... 45
Cleaning and maintaining the seat belt.........................................................................289
Emergency Locking Retractor .............. 26
How to wear your seat belt ..................... 25
How your child should wear the seat belt ............................................................................ 25
Pregnant women, proper seat belt use .............................................................................24
Reminder light and buzzer .....................351
Seat belt extender ........................................ 25
Seat belt guide ............................................... 26
Seat belt pretensioners ...............................27
SRS warning light ......................................348
Seat heaters ................................................... 268
Seating capacity............................................ 150
Seat lights.......................................................... 271
Seat position memory.................................. 127
Seats....................................................................125 Adjustment precautions ...........................125
Adjustment......................................................125
Child seats/child restraint system installa-tion .................................................................... 44
Cleaning.........................................................289
Driving position memory......................... 127
Head restraints .............................................. 131
Jam protection function............................ 127
Power easy access system ..................... 127
Properly sitting in the seat .........................23
Seat heaters ..................................................268
Seat position memory ............................... 127
Seat ventilators............................................268 Seat ventilators ............................................. 268
Sensor
Automatic headlight system .................... 181
Automatic High Beam system ............. 184
Inside rear view mirror ..............................134
Intuitive parking assist .............................. 225
LKA (Lane-Keeping Assist) ................. 207
Radar sensor ..................................... 194, 233
Rain-sensing windshield wipers .......... 188
Service plug ...................................................... 65
Service reminder message ..................... 295
Shift lever Automatic transmission ............................162
Hybrid transmission................................... 169
Shift lever light ................................................ 271
Shift position and gear position ................ 82
Side airbags ...................................................... 28
Side marker lights........................................... 181 Light switch ...................................................... 181
Replacing light bulbs ................................336
Side mirrors .....................................................135 Adjustment ..................................................... 135
BSM (Blind Spot Monitor)......................231
Folding.............................................................. 136
Linked mirror functi on when reversing
........................................................................... 136
Mirror position memory ........................... 127
Side turn signal lights ................................... 175 Replacing light bulbs ................................336
Turn signal lever ...........................................175
Side windows ................................................. 138
Slip indicator .................................................. 349
Smart access system with push-button start.................................................................... 117Antenna location ........................................... 117
Entry functions ................................................ 110
Starting the engine ..................................... 152
Starting the hybrid system ...................... 156
Snow mode ............................................ 166, 173
Snow tires ....................................................... 250
Spark plug ........................................................391
Specifications ................................................ 386

Alphabetical index445
Uniform Tire Quality Grading............399
Tire pressure warning system ..................315 Function ............................................................315
Initializing ........................................................ 318
Installing tire pressure warning valves and transmitters ........................................ 317
Registering ID codes ............................... 320
Warning light ............................................... 352
Tires.....................................................................313 Chains ...............................................................251
Checking .........................................................313
If you have a flat tire .................................. 362
Inflation pressure........................................ 325
Information .................................................... 397
Replacing ......................................................... 321
Rotating tires ..................................................315
Run-flat tires ...................................... 315, 362
Size.................................................................... 393
Snow tires ......................................................250
Tire inflation pressu re display function
...........................................................................315
Tire pressure warning system ...............315
Warning light ............................................... 352
Tools.................................................................. 322
Top tether strap............................................... 53
Total load capacity ....... ............................... 386
Towing Dinghy towing ................................................ 151
Emergency towing ..................................... 341
Towing eyelet .............................................. 343
Trailer towing .................................................. 151
TRAC (Traction Control) ........................ 243
Traction battery (hybrid battery) ............. 65 Hybrid battery (traction battery) air vents............................................................................ 68
Location............................................................. 65
Specification ................................................ 388
Warning message........................................ 68
Traction Control (TRAC) ........................ 243
Traction motor (electric motor) ............... 62
Trailer towing ................................................... 151
Transmission Automatic transmission ............................162
Driving mode select switch .................. 224
Hybrid transmission................................... 169
M mode ................................................. 168, 174
Paddle shift switches .. 167, 168, 173, 174
Snow mode.......................................... 166, 173
Trip meters ........................................................ 82
Trunk .................................................................... 114 Internal trunk release lever....................... 116
Smart access system with push-button start ................................................................... 115
Trunk features .............................................. 275
Trunk grip ......................................................... 116
Trunk light ......................................................... 116
Trunk opener main switch........................ 117
Trunk opener switch ................................... 115
Wireless remote control ........................... 115
Trunk light .......................................................... 116
Turn signal lights ............................................ 175 Replacing light bulbs ................................336
Turn signal lever ...........................................175
U
Units ..................................................................... 89
V
Vanity lights.....................................................277Wattage ..........................................................394
Vanity mirrors ................................................277
Variable Gear Ratio Steering (VGRS) .......................................................................... 243
VDIM (Vehicle Dynamics Integrated Man- agement)...................................................... 244
Vehicle data recordings ..................................7
Vehicle Dynamics Integrated Manage- ment (VDIM).............................................. 244
Vehicle identification number ................ 386
Vehicle Stability Control (VSC) ........... 243
Ventilators (seat ventilators)................... 268
VGRS (Variable Gear Ratio Steering) .......................................................................... 243