Page 488 of 664
488
SIENNA_OM_01999-08001_(U)
7-3. Do-it-yourself maintenance
Tires
New tread
Treadwear indicator
Worn tread
The location of treadwear indica-
tors is shown by the “TWI” or “ ”
marks, etc., molded on the side-
wall of each tire.
Vehicles with compact spare tire:
check spare tire condition and
pressure if not rotated.
Rotate the tires in the order
shown.
To equalize tire wear and extend
tire life, Toyota recommends that
tire rotation is carried out at the
same interval as tire inspection.
Replace or rotate tires in accordance with maintenance sched-
ules and treadwear.
Checking tires
1
2
3
Tire rotation
Front
Page 565 of 664
5658-2. Steps to take in an emergency
SIENNA_OM_01999-08001_(U)
8
When trouble arises
Location of the spare tire, jack and tools
Spa re ti r e
Jack handle
Tire bag
JackWheel nut wrench
Adapter socket
Tire strap1
2
3
4
5
6
7
Page 576 of 664

5768-2. Steps to take in an emergency
SIENNA_OM_01999-08001_(U)
WARNING
■When using the compact spare tire
●Remember that the compact spare tire provided is specifically
designed for use with your vehicle. Do not use your compact spare tire
on another vehicle.
●Do not use more than one compact spare tire simultaneously.
●Replace the compact spare tire with a standard tire as soon as possi-
ble.
●Avoid sudden acceleration, abrupt steering, sudden braking and shift-
ing operations that cause sudden engine braking.
■When the compact spare tire is attached
The vehicle speed may not be correctly detected, and the following sys-
tems may not operate correctly:
Also, not only can the following system not be utilized fully, but it may
even negatively 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. Fail-
ure 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 po ssibility of personal injury during a
collision or sudden braking.
■When stowing the flat tire
●Make sure the third seats are in their original position.
●Secure it using a tire strap. Otherwise, the flat tire may fly out in case
of sudden braking or an accident, resulting in death or serious injury.
• ABS & Brake assist
• VSC
•TRAC
• Dynamic radar cruise control (if equipped) • Cruise control (if equipped)
• PCS (if equipped)
• Navigation system (if equipped)
Page 607 of 664

SIENNA_OM_01999-08001_(U)
6079-1. Specifications
9
Vehicle specifications
Tire size( P. 608)
DOT and Tire Identification Number (TIN) ( P. 608)
Uniform tire quality grading
For details, see “Uniform Tire Quality Grading” that follows.
Location of treadwear indicators ( P. 488)
Run-flat tire (RFT) or standard tire ( P. 562)
This vehicle can be equipped with ei ther run-flat tires (RFT) or stan-
dard tires. A “RFT” or “DSST” mark is molded on the sidewall of the
run-flat tire.
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. 491)
Maximum cold tire inflation pressure ( P. 600)
This means the pressure to which a tire may be inflated.
Summer tires or all season tires ( P. 492)
An all season tire has “M+S” on the sidewall. A tire not marked “M+S”
is a summer tire.
“TEMPORARY USE ONLY” ( P. 575)
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.
1
2
3
4
5
6
7
8
9
10
11
12
Page 660 of 664

660Alphabetical index
SIENNA_OM_01999-08001_(U)
Smart key systemAntenna location ................... 142
Entry function ........ 110, 121, 132
Starting the engine................ 226
Warning message ................. 558
Snow tires ................................ 311
Spare tire Inflation pressure .................. 601
Storage location .................... 565
Spark plug ................................ 598
Specifications .......................... 594
Speedometer .............................. 88
Steering wheel Adjustment ............................ 176
Audio switches
*.................... 320
Column lock release ..... 224, 229
“DISP” switch .......................... 90
Heated steering wheel .......... 416
Meter control switches ............ 94
Talk switch
*.......................... 400
Telephone switches
*............ 379
Stop lights Replacing light bulbs..... 520, 523
Wattage ................................ 602
Storage feature ........................ 422
Storage precautions ........ 205, 422
Stuck If your vehicle becomes stuck ................................... 590
Sunshades
Rear door .............................. 442
Roof ...................................... 190
Sun visors ................................ 435
Switch
Audio remote control switches
*........................... 320
BSM (Blind Spot Monitor) switch ................................. 303
Cruise control switch............. 257 “DISP” switch .......................... 90
Door lock switch ................... 114
Driving position memory
switches ............................. 168
Emergency flashers
switch ................................. 528
Engine switch ............... 223, 226
Fog light switch ..................... 247
Garage door opener switches ............................. 444
Heated steering wheel .......... 416
Ignition switch ............... 223, 226
Intuitive parking assist switch ................................. 273
Light switches ....................... 237
Moon roof switches............... 188
Outside rear view mirror switches ............................. 180
Pre-collision braking off switch ................................. 297
Power back door................... 133
Power door lock switch ......... 114
Power window switch ... 183, 186
Rear window wiper and washer switch..................... 252
Rear window and outside rear view mirror
defoggers switch ................ 408
Seat heater switches ............ 416
“SOS” button......................... 453
Talk switch
*.......................... 400
Telephone switches
*............ 379
Tire pressure warning
reset switch ........................ 489
TRAC OFF switch................. 292
Vehicle-to-vehicle distance button ................................. 261
Window lock switch .............. 183
Wiper and washer switch ......................... 248, 252