tires LEXUS LS500H 2020 Workshop Manual

4618-1. Specifications
8
Vehicle specifications
Tire size (P.462)
Run-flat tire (RFT) or standard tire ( P.433)
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.462)
Location of treadwear indicators ( P.387)
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.387)
Maximum cold tire inflation pressure ( P.456)
This means the pressure to which a tire may be inflated.
Uniform tire quality grading
For details, see “Uniform Tire Quality Grading” that follows.
Summer tires or all season tires ( P.387)
Tire information
Typical tire symbols
A
B
C
D
E
F
G
H
I
J
K

4638-1. Specifications
8
Vehicle specifications
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
■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 performance 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.
Tire section names
A
B
C
A
B
C
D
E
F
G
H
I
J
K
Uniform Tire Quality Grading

4648-1. Specifications
■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 pressure
Tire 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
Accessory weight
The combined weight (in excess of those standard
items which may be replaced) of automatic trans-
mission, power steering, power brakes, power win-
dows, power seats, radio and heater, to the extent
that these items are available as factory-installed
equipment (whether installed or not)

4848-3. Initialization
8-3.Initialization
*:If equipped
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 items to initialize
ItemWhen to initializeReference
PKSB (Parking Support
Brake)
*• After reconnecting or changing the batteryP.278
Intuitive parking assist*• After reconnecting or changing the batteryP.261
Message indicating
maintenance is
required
• After maintenance is performedP.368
Oil maintenance• After maintenance is performedP.381
Tire pressure warning
system
• When the tire inflation pressure is changed, such as when changing trav-
eling speed or load weight.
• When the tire inflation pressure is changed, such as when the tire size is
changed.
• When rotating the tires.
• After performing the transmitter ID code registration procedure.
P.392
Lexus parking assist
monitor
*
• Battery has been reinstalled.
• The steering wheel has been moved while the battery was being reinstalled.
• Battery power is low.Refer to the “NAVI-
GATION AND MUL- TIMEDIA SYSTEM OWNER’S MAN- UAL”.
Panoramic view moni-
tor
*
• Battery has been reinstalled.
• The steering wheel has been moved while the battery was being reinstalled.
• Battery power is low.Refer to the “NAVI-
GATION AND MUL- TIMEDIA SYSTEM OWNER’S MAN- UAL”.

507Alphabetical Index
Pre-Collision System (PCS)Function ............................................... 205, 216
PCS OFF switch ............................. 208, 218
Warning light ............................................... 425
R
Radar cruise control (dynamic radar cruise control with full-speed range)... 238, 241
Radiator ........................................................... 383
RCD (Rear camera detection) .............. 257 Function .......................................................... 270
Warning message....................................... 271
RCTA Function .......................................................... 266
Warning message..................................... 267
RCTA (Rear Cross Traffic Alert) ......... 257
RCTA function ..............................................267
Rear automatic air conditioning system .......................................................................... 327
Rear Cross Traffic Alert (RCTA) ......... 266
Rear door sunshades ..... ............................ 350
Rear Multi Operation Panel .....................312
Rear seat position memory .......................134
Rear seats .........................................................125 Adjustment...................................................... 126
Head restraints .............................................135
Rear seat position memory .................... 134
Relaxation system........................................128
Seat heaters ..................................................330
Seat ventilators............................................330
Rear side marker lights Light switch .................................................... 180
Replacing light bulbs............................... 408
Rear sunshades ............................................ 352
Rear turn signal lights Replacing light bulbs............................... 408
Turn signal lever ........................................... 175
Rear view mirror Inside rear view mirror............................. 140
Outside rear view mirrors ........................141
Rear window defogger .............................. 318 Refueling
Capacity .......................................................... 451
Fuel types ........................................................ 451
If the fuel filler do or cannot be opened
..........................................................................436
Opening the fuel tank cap ..................... 190
Remote Touch ..............................................308
Replacing Electronic key battery ............................. 403
Fuses................................................................ 405
Light bulbs .................................................... 408
Tires ................................................................. 395
Resetting the message indicating mainte- nance is required ...................................... 368
Rev indicator .................................................... 78
Rev peak............................................................. 78
Road Sign Assist .......................................... 238
RSA (Road Sign Assist) ............................ 238
Run-flat tires....................................... 389, 433
S
Seat belt buckle lights ................................ 334
Seat belt reminder light............................. 422
Seat belts............................................................ 24 Automatic Locking Retractor................. 26
Child restraint system installation ......... 46
Cleaning and maintaining the seat belt......................................................................... 365
Easy Access Buckle .................................... 26
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 ................... 422
Seat belt extender......................................... 25
SRS warning light.......................................420
Seat heaters ................................................... 330
Seat position memory....................... 130, 134
Seat ventilators ............................................. 330
Seating capacity.............................................163

508Alphabetical Index
SeatsAdjustment............................................. 119, 126
Adjustment precautions ............................ 119
Child seats/child restraint system installa-tion .................................................................... 45
Cleaning.........................................................365
Driving position memory........................ 130
Front seat refresh system......................... 124
Head restraints .............................................135
Power easy access system .................... 130
Properly sitting in the seat .........................23
Rear seat relaxation system....................128
Seat heaters ..................................................330
Seat position memory .................... 130, 134
Seat ventilators............................................330
Secondary Collision Brake ..................... 297
Sensor Automatic headlight system.................. 180
Automatic High Beam system............. 183
Inside rear view mirror............................. 140
Intuitive parking assist.............................. 259
LTA (Lane Tracing Assist).................... 226
Parking Support Brake function (rear-crossing vehicles)......................285
Parking Support Brake function (static objects)........................................................280
Radar sensor........................... 192, 199, 253
Rain-sensing windshield wipers.......... 186
RCTA .............................................................. 267
Service reminder message ..................... 368
Shift lever Automatic transmission ............................169
Shift lever light .............................................. 334
Shopping bag hooks .................................. 343
Side airbags ...................................................... 29
Side marker lights Light switch .................................................... 180
Replacing light bulbs............................... 408
Side mirrors Adjustment........................................................141
BSM (Blind Spot Monitor) .....................251
Folding .............................................................. 142 Linked mirror functi
on when reversing
............................................................................. 141
Mirror position memory .......................... 130
RCTA function ............................................266
Side turn signal lights Replacing light bulbs ............................... 408
Turn signal lever ...........................................175
Side windows ..................................................143
Smart access system with push-button startAntenna location ............................................. 111
Entry functions .............................................. 100
Starting the engine ..................................... 165
Snow mode ...................................................... 172
Snow tires ....................................................... 303
Spark plug ...................................................... 453
Specifications ................................................ 450
Speedometer ............................................73, 76
Steering lock Column lock release ................................. 165
Steering lock system warning message........................................................................... 165
Steering wheel Adjustment ..................................................... 139
Heated steering wheel ........................... 330
Meter control switches ............................... 81
Power easy access system .................... 130
Steering wheel position memory........ 130
Stop lights Replacing light bulbs ............................... 408
Storage features .......................................... 338
Stuck If the vehicle becomes stuck ................ 447
Suggestion function....................................... 86
Sun visors ........................................................350
Sunshade Roof.................................................................... 146
Switches Activating the Automatic High Beam183
Automatic High Beam system ............. 183
Brake Hold switch...................................... 178
Door lock switches .................................... 102

509Alphabetical Index
Driving mode select switch .................. 292
Driving position memory switches .... 130
Dynamic radar cruise control with full-speed range switch ......................... 241
Electronic roof sunshade switches .... 148
Emergency flashers switch .................... 410
Engine switch................................................ 165
Garage door opener switches .......... 354
Heated steering wheel switch.............330
HUD (Head-up display) switch............ 89
Ignition switch............................................... 165
Instrument panel light control switches ....................................................................75, 79
Intuitive parking assist switch...............260
Light switches ............................................... 180
LTA (Lane Tracing As sist) switch..... 232
Meter control switches ................................81
Moon roof switches ...................................146
“ODO TRIP” switch ............................ 74, 79
Outside rear view mirror switches .......141
Paddle shift switches ........................ 173, 174
Panoramic moon roof switches .......... 148
Parking brake switch ................................. 176
PCS OFF switch ............................. 208, 218
PKSB (Parking Support Brake) switch ......................................................................... 274
Power door lock switch ...........................102
Power window switches ..........................143
RCD (Rear Camera Detection) switch ......................................................................... 270
RCTA switch................................................ 266
Rear door sunshade switch................. 350
Rear seat heater ......................................... 328
Rear seat position memory switches. 134
Rear seat ventilator ................................... 328
Rear sunshades switch ........................... 352
Rear window and outside rear view mir- ror defoggers switch .............................. 317
Seat heater switches ................................330
Seat ventilator switches ..........................330
Snow mode switch ..................................... 172
“SOS” button .................................................. 58 Tilt and telescopic steering control switch
........................................................................... 139
Tire pressure warning reset switch...392
Trunk closer switch ....................................108
Trunk opener main switch........................ 110
Trunk opener switch ................................. 106
Vehicle-to-vehicle distance switch.....241
VSC OFF switch .......................................299
Window lock switch.................................. 145
Windshield wiper and washer switch185
Windshield wiper de-icer switch....... 322
T
Tachometer................................................73, 76 Rev indicator ................................................... 78
Rev peak............................................................ 78
Tail lights Light switch ....................................................180
Replacing light bulbs ............................... 408
Theft deterrent system Alarm...................................................................65
Engine immobilizer system...................... 63
Tire inflation pressure Maintenance data ..................................... 456
Tire inflation pressure display function......................................................................... 389
Warning light ............................................... 423
Tire information ..............................................461 Glossary .........................................................464
Size .................................................................... 462
Tire identification number...................... 462
Uniform Tire Quality Grading ............463
Tire pressure display ... ............................... 389
Tire pressure warning system Function ......................................................... 389
Initializing........................................................392
Installing tire pres sure warning valves
and transmitters........................................ 391
Registering ID codes ...............................393
Warning light ............................................... 423
Tires Chains ............................................................ 304

510Alphabetical Index
Checking ....................................................... 387
If you have a flat tire .................................. 433
Inflation pressure........................................399
Information ......................................................461
Replacing .......................................................395
Rotating tires ............................................... 388
Run-flat tires .................................... 389, 433
Size....................................................................456
Snow tires ......................................................303
Tire inflation pressure display function
.........................................................................389
Tire pressure warning system .............389
Warning light ............................................... 423
Top tether strap............................................... 55
Total load capacity ....... ............................... 450
Towing Dinghy towing ...............................................164
Emergency towing ..................................... 413
Towing eyelet ................................................416
Trailer towing .................................................163
TRAC (Traction Control) ........................ 298
Traction Control (TRAC) ........................ 298
Trailer towing ..................................................163
Transmission Automatic transmission ............................169
Driving mode select switch .................. 292
M mode ............................................................ 174
Paddle shift switches ........................ 173, 174
Snow mode .................................................... 172
Trip meters .................................................74, 79
Trunk .................................................................. 104 Hands Free Power Trunk Lid ...............107
Internal trunk release lever .................... 109
Power trunk opener and closer .......... 106
Smart access system with push-button start ..................................................................107
Trunk closer switch.................................... 108
Trunk easy closer........................................ 108
Trunk features.............................................. 343
Trunk grip ....................................................... 108
Trunk lid light................................................. 108
Trunk light....................................................... 108 Trunk opener main switch........................ 110
Trunk opener switch ................................. 106
Wireless remote control ......................... 107
Trunk lid light .................................................. 108
Trunk light ........................................................ 108
Turn signal lights Replacing light bulbs ............................... 408
Turn signal lever ...........................................175
U
USB charging ports.................................... 346
V
Vanity lights....................................................350
Vanity mirrors ...............................................350
Variable Gear Ratio Steering (VGRS)298
VDIM (Vehicle Dynamics Integrated Man-agement)...................................................... 298
Vehicle data recording ....................................7
Vehicle Dynamics Integrated Manage- ment (VDIM).............................................. 298
Vehicle identification number ................ 450
Vehicle Stability Control (VSC) ........... 297
Ventilators (seat ventilators)................... 330
VGRS (Variable Gear Ratio Steering)298
VSC (Vehicle Stability Control) ........... 297
W
Warning buzzers ABS .....................................................................421
Airbags............................................................420
Approach warning.................................... 247
Brake hold ..................................................... 426
Brake Override System ...........................421
Brake system................................................. 419
Charging system........................................420
Downshifting ..................................................174
Drive-Start Control.....................................421
Electric power steering........................... 422
Engine..............................................................420