
3206-3. Do-it-yourself maintenance
Check if the treadwear indicators are
showing on the tires. Also check the
tires for uneven wear, such as exces-
sive wear on one side of the tread.
Check the spare tire condition and
pressure if not rotated.New tread
Worn tread
Treadwear indicator
The location of treadwear indicators is
shown by a “TWI” or “ ” mark, etc.,
molded into the sidewall of each tire.
Replace the tires if the treadwear indica- tors are showing on a tire.
■When to replace your vehicle’s tires
●Tires should be replaced if:
• The treadwear indicators are showing on
a tire.
• You have tire damage such as cuts, splits, cracks deep enough to expose the fabric,
and bulges indicating internal damage
• A tire goes flat repeatedly or cannot be properly repaired due to the size or loca-
tion of a cut or other damage
If you are not sure, consult your Lexus
dealer.
●Vehicles with 17-inch tires:
The wheel angle differs from vehicles
equipped with 18-inch/19-inch tires. There-
fore, 18-inch/19-inch tires cannot be
installed, as sufficient gaps with surrounding
parts cannot be ensured.
■Tire life
Any tire over 6 years old must be checked
by a qualified technician even if it has sel-
dom or never been used or damage is not
obvious.
■Low profile tires (18-inch/19-inch tires)
Generally, low profile tires will wear more
rapidly and tire grip performance will be
reduced on snowy and/or icy roads when
compared to standard tires. Be sure to use
snow tires on snowy and/or icy roads and
drive carefully at a speed appropriate for
road and weather conditions.
■Maximum load of tire
Check that the maximum load of the
replacement tire is greater than 1/2 of the
Gross Axle Weight Ratings (GAWR) of
either the front axle or the rear axle, which-
ever is greater.
For the GAWR, see the Certification Label.
For the maximum load of the tire, see the
load limit at maximum cold tire inflation
pressure mentioned on the sidewall of the
tire. ( P.399)
Tires
Replace or rotate tires in accor-
dance with maintenance schedules
and treadwear.
Checking tires
A
B
C

3667-2. Steps to take in an emergency
Type AWheel nut wrench
Wheel lock key
* (if equipped)
Jack
Jack handle
Spare tire
*: Documentation relating to the wheel lock key, such as the registration and I.D. card, is inside the glove box.
Location of the spare tire, jack and tools
A
B
C
D
E

3737-2. Steps to take in an emergency
7
When trouble arises
WARNING
•TRAC
• Dynamic radar cruise control with full-speed range
• PCS (Pre-Collision System)
•EPS
• Adaptive Variable Suspension system (if equipped)
• LTA (Lane Tracing Assist)
• Panoramic view monitor (if equipped)
• Lexus parking assist monitor (if equipped)
• Intuitive parking assist (if equipped)
• Navigation system (if equipped)
• BSM (Blind Spot Monitor)
• AHB (Automatic High Beam)
Also, not only can the following system
not be utilized fully, but it may even nega-
tively affect the drive-train components:
• AWD system (if equipped)
■Speed limit when using the compact
spare tire
Do not drive at speeds in excess of 50
mph (80 km/h) when a compact spare
tire is installed on the vehicle.
The compact spare tire is not designed
for driving at high speeds. Failure to
observe this precaution may lead to an
accident causing death or serious injury.
■After using the tools and jack
Before driving, make sure all the tools
and jack are securely in place in their
storage location to reduce the possibility
of personal injury during a collision or
sudden braking.
NOTICE
■Be careful when driving over bumps
with the compact spare tire installed
on the vehicle
The vehicle becomes lower when driving
with the compact spare tire compared to
when driving with standard tires. Be
careful when driving over uneven road
surfaces.
■Driving with tire chains and the com-
pact spare tire
Do not fit tire chains to the compact
spare tire.
Tire chains may damage the vehicle
body and adversely affect driving perfor-
mance.
■When replacing the tires
When removing or fitting the wheels,
tires or the tire pressure warning valve
and transmitter, contact your Lexus
dealer as the tire pressure warning valve
and transmitter may be damaged if not
handled correctly.

4008-1. Specifications
Compact spare tireTire size ( P.401)
DOT and Tire Identification Number (TIN) ( P.401)
Location of treadwear indicators ( P.320)
Tire ply composition and materials
Plies are layers of rubber-coated parallel cord s. 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.403)
Maximum cold tire inflation pressure ( P.403)
This means the pressure to which a tire may be inflated.
“TEMPORARY USE ONLY”
A compact spare tire is identified by the phrase “TEMPORARY USE ONLY” molded on
its sidewall. This tire is designed for temporary emergency use only.
A
B
C
D
E
F
G
H
I

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