
4028-1. Specifications
■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 th
e 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 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 performance of tires depends
upon the actual conditions of their use.
Performance may differ significantly from
the norm due to variations 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

4038-1. Specifications
8
Vehicle 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 sudden tire failure.
Grade C corresponds to a level of perfor-
mance which all passenger car tires must
meet under the Federal 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, underinflation, 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
Accessory weight
The combined weight (in excess of those standard items which may
be replaced) of automatic transmission, power steering, power
brakes, power windows, power seats, radio and heater, to the extent
that these items are available as factory-installed equipment
(whether installed or not)
Curb weight
The weight of a motor vehicle with standard equipment, including the
maximum capacity of fuel, oil and coolant, and if so equipped, air
conditioning and additional weight optional engine

4198-3. 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 battery being reconnected, or maintenance being performed on
the vehicle:
List of the items to initialize
ItemWhen to initializeReference
Intuitive parking assist*After reconnecting or changing the
batteryP.218
PKSB (Parking Support Brake)*After reconnecting or changing the
batteryP.238
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.324
Power windows
When functioning abnormally
P.123
Moon roof*P.126
Panoramic moon roof*P.129
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 “NAV- IGATION
AND MULTI- MEDIA SYS- TEM
OWNER’S
MANUAL”.

444Alphabetical index
Panic mode ....................................................... 94
Panoramic moon roofJam protection function............................129
Operation........................................................128
Parking assist sensors (intuitive parking assist) ............................................................... 216
Parking brake..................................................154 Operation........................................................154
Parking brake engaged warning buzzer.......................................................................... 155
Warning light ............................................... 357
Warning message...................................... 155
Parking lights .................................................. 158 Light switch.................................................... 158
Parking Support Brake function (rear- crossing vehicles) .......................... 232, 242
Parking Support Brake function (rear pedestrians) ..................................... 232, 244 Function .......................................................... 244
Parking Support Brake function (static objects) .............................................. 232, 239 Function .......................................................... 239
PCS (Pre-Collision System) ..................... 176 Function ............................................................ 176
PCS OFF switch .......................................... 179
Warning light ............................................... 357
Personal lights............................................... 273
PKSA (Parking Support Alert) ................215
PKSB (Parking Support Brake)............. 232 Warning message..................................... 237
Power easy access system ......................... 113
Power outlet ..................................................280
Power steering (Electric power steering system) .......................................................... 246 Warning light ...............................................353
Power trunk lid .............................................. 100
Power windows ..............................................123 Door lock linked window operation.. 124
Jam protection function............................ 123
Operation........................................................ 123
Window lock switch .................................. 124
Pre-Collision System (PCS) ..................... 176 Function ............................................................176
PCS OFF switch ..........................................179
Warning light ...............................................357
R
Radar cruise control (dynamic radar cruise
control with full-speed range).............. 198
Radiator .............................................................316
RCD (Rear Camera Detection) ........... 229 Function .......................................................... 229
Warning message .....................................230
RCTA (Rear Cross Traffic Alert) ......... 223
RCTA Function .......................................................... 223
Warning message ..................................... 224
Rear Cross Traffic Alert (RCTA) ......... 223
Rear door sunshades ................................. 287
Rear seats Head restraints............................................... 116
Rear side marker lights .............................. 158 Light switch .................................................... 158
Replacing light bulbs............................... 338
Rear sunshades ............................................ 286
Rear turn signal lights ..................................153 Replacing light bulbs............................... 338
Turn signal lever .......................................... 153
Rear view mirror Inside rear view mirror ............................... 119
Outside rear view mirrors...................... 120
Rear window defogger ............................. 263
Refueling ...........................................................169 Capacity ........................................................ 390
Fuel types ...................................................... 390
If the fuel filler door cannot be opened..........................................................................376
Opening the fuel tank cap ..................... 169
Remote Touch .............................................. 256
Replacing Electronic key battery..............................333
Fuses.................................................................335
Light bulbs .................................................... 338
Tires ................................................................. 365

Alphabetical index445
Resetting the message indicating mainte-nance is required ...................................... 303
Rev indicator .....................................................73
Rev peak..............................................................73
Road Sign Assist ............................................195
RSA (Road Sign Assist) ..............................195
S
Seat belt reminder light............................. 354
Seat belts............................................................ 24 Adjusting the seat belt................................ 26
Automatic Locking Retractor ................ 26
Child restraint system installation......... 44
Cleaning and maintaining the seat belt.......................................................................... 301
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 ...................354
Seat belt extender ........................................ 25
Seat belt pretensioners ...............................27
SRS warning light ...................................... 352
Seat heaters ................................................... 269
Seating capacity............................................. 142
Seat position memory................................... 113
Seats..................................................................... 112 Adjustment precautions.............................112
Adjustment........................................................112
Child seats/child restraint system instal-lation................................................................. 43
Cleaning.......................................................... 301
Driving position memory.......................... 113
Head restraints .............................................. 116
Power easy access system ...................... 113
Properly sitting in the seat .........................23
Seat heaters .................................................. 269
Seat position memory ................................ 113
Seat ventilators............................................ 269
Seat ventilators ............................................. 269 Secondary Collision Brake ..................... 246
Sensor
AHB (Automatic High Beam) ............... 161
Automatic headlight system .................. 158
Inside rear view mirror ............................. 120
Intuitive parking assist ................................216
LTA (Lane Tracing Assist) ..................... 186
Parking Support Brake function (rear-crossing vehicles)................................... 242
Parking Support Brake function (static objects) ........................................................240
Radar sensor ....................................... 171, 209
Rain-sensing windshield wipers .......... 166
RCTA............................................................... 224
Service reminder message ..................... 303
Shift lever Automatic transmission ........................... 149
Shift lever light .............................................. 273
Shift lock system............................................ 150
Side airbags ...................................................... 28
Side marker lights......................................... 158 Light switch .................................................... 158
Side mirrors .....................................................120 Adjustment ..................................................... 120
BSM (Blind Spot Monitor)................... 208
Folding................................................................ 121
Linked mirror function when reversing............................................................................122
Mirror position memory............................ 113
RCTA function ............................................ 223
Side turn signal lights ...................................153 Replacing light bulbs............................... 338
Turn signal lever .......................................... 153
Side windows ..................................................123
Smart access system with push-button start...................................................................107 Antenna location ......................................... 107
Entry functions..................................... 96, 103
Starting the engine ......................................144
Snow tires .........................................................251
Spare tire Storage location ........................................ 366

Alphabetical index447
Theft deterrent systemAlarm ..................................................................60
Engine immobilizer system ..................... 59
Tire inflation pressure ................................ 328 Maintenance data......................................395
Tire inflation pressure display function......................................................................... 322
Warning light ...............................................355
Tire information ............................................ 399 Glossary.........................................................403
Size..................................................................... 401
Tire identification number ...................... 401
Uniform Tire Quality Grading............ 402
Tire pressure warning system ................ 322 Function .......................................................... 322
Initializing ....................................................... 324
Installing tire pressure warning valves and transmitters ...................................... 323
Registering ID codes ............................... 326
Warning light ...............................................355
Tires ................................................................... 320 Chains ............................................................. 252
Checking .......................................................320
If you have a flat tire ..................................365
Inflation pressure........................................ 328
Information....................................................399
Replacing .......................................................365
Rotating tires ................................................ 322
Size....................................................................395
Snow tires ........................................................251
Spare tire........................................................365
Tire inflation pressure display function......................................................................... 322
Tire pressure warning system ............. 322
Warning light ...............................................355
Tools.................................................................. 366
Top tether strap ............................................... 53
Total load capacity ......................................388
Towing Dinghy towing ...............................................143
Emergency towing ................................... 347
Trailer towing................................................. 142 TRAC (Traction Control) ........................ 246
Traction Control (TRAC) ........................ 246
Trailer towing ..................................................142
Transmission
Automatic transmission ........................... 149
Driving Mode Select switch ...................213
Paddle shift switches .........................151, 152
S mode ............................................................. 152
Trip meters ................................................ 70, 74
Trunk .................................................................. 100 Hands Free Power Trunk Lid............... 103
Internal trunk release lever..................... 105
Power trunk lid .............................................100
Smart access system with push-button start ................................................................. 103
Trunk closer switch .................................... 104
Trunk easy closer........................................ 104
Trunk features .............................................. 279
Trunk grip ....................................................... 104
Trunk light ....................................................... 104
Trunk opener main switch...................... 106
Trunk opener switch ................................. 102
Trunk storage extension........................ 288
Wireless remote control ......................... 103
Trunk light ........................................................ 104
Turn signal lights ............................................153 Replacing light bulbs................... 338, 339
Turn signal lever .......................................... 153
Wattage ......................................................... 396
U
USB charging ports......................................281
V
Vanity lights....................................................280
Vanity mirrors ...............................................280
Vehicle data recordings ..................................7
Vehicle identification number ................388
Vehicle Stability Control (VSC) ........... 246
Ventilators (seat ventilators)................... 269
VSC (Vehicle Stability Control) ........... 246