Page 496 of 672
496
SIENNA_OM_OM08007U_(U)
7-3. Do-it-yourself maintenance
Tires
Check if the treadwear indicators are showing on the tires. Also check
the tires for uneven wear, such as excessive wear on one side of the
tread. Check the spare tire condi tion and pressure if not rotated.
New tread
Worn tread
Treadwear indicator
The location of treadwear indicators is shown by a “TWI” or “ ” marks,
etc., molded into the sidewall of each tire.
Replace the tires if the treadwear indicators are showing on a tire.
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 acco rdance with maintenance sched-
ules and treadwear.
Checking tires
Tire rotation
1
2
3
Front
Page 573 of 672
5738-2. Steps to take in an emergency
SIENNA_OM_OM08007U_(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 584 of 672

5848-2. Steps to take in an emergency
SIENNA_OM_OM08007U_(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)
• EPS
Page 613 of 672

SIENNA_OM_OM08007U_(U)
6139-1. Specifications
9
Vehicle specifications
Tire size( P. 615)
DOT and Tire Identification Number (TIN) ( P. 614)
Uniform tire quality grading
For details, see “Uniform Tire Quality Grading” that follows.
Location of treadwear indicators ( P. 496)
Run-flat tire (RFT) or standard tire ( P. 570)
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. 499)
Maximum cold tire inflation pressure ( P. 606)
This means the pressure to which a tire may be inflated.
Summer tires or all season tires ( P. 500)
An all season tire has “M+S” on the sidewall. A tire not marked “M+S”
is a summer tire.
“TEMPORARY USE ONLY” ( P. 583)
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 666 of 672

666Alphabetical index
SIENNA_OM_OM08007U_(U)
Smart key systemAntenna location ................... 143
Entry function ........ 110, 121, 133
Starting the engine................ 228
Warning message ................. 566
Snow tires ................................ 317
Spare tire Inflation pressure .................. 607
Storage location .................... 573
Spark plug ................................ 604
Specifications .......................... 600
Speedometer .............................. 88
Steering wheel Adjustment ............................ 177
Audio switches
*.................... 325
Column lock release ..... 226, 231
“DISP” switch .......................... 90
Heated steering wheel .......... 424
Meter control switches ............ 94
Talk switch
*.......................... 405
Telephone switches
*............ 384
Stop lights Replacing light bulbs..... 528, 531
Wattage ................................ 608
Storage feature ........................ 430
Storage precautions ........ 207, 430
Stuck If your vehicle becomes stuck ................................... 597
Sunshades
Rear door .............................. 450
Roof ...................................... 191
Sun visors ................................ 443
Switch
Audio remote control switches
*........................... 325
BSM (Blind Spot Monitor) switch ................................. 309
Cruise control switch............. 262 “DISP” switch .......................... 90
Door lock switch ................... 114
Driving position memory
switches ............................. 169
Emergency flashers
switch ................................. 536
Engine switch ............... 225, 228
Fog light switch ..................... 252
Garage door opener switches ............................. 452
Heated steering wheel .......... 424
Ignition switch ............... 225, 228
Intuitive parking assist switch ................................. 279
Light switches ....................... 242
Moon roof switches............... 189
Outside rear view mirror switches ............................. 181
Pre-collision braking off switch ................................. 303
Power back door................... 134
Power door lock switch ......... 114
Power window switch ... 184, 187
Rear window wiper and washer switch..................... 257
Rear window and outside rear view mirror
defoggers switch ................ 416
Seat heater switches ............ 424
“SOS” button......................... 461
Talk switch
*.......................... 405
Telephone switches
*............ 384
Tire pressure warning
reset switch ........................ 497
TRAC OFF switch................. 298
Vehicle-to-vehicle distance button ................................. 266
Window lock switch .............. 184
Wiper and washer switch ......................... 253, 257