Page 594 of 668
594
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8-2. Steps to take in an emergency
If the vehicle becomes stuck
Stop the engine. Set the parking brake and shift the shift lever to P.
Remove the mud, snow, or sand from around the stuck tire.
Place wood, stones or some other material under the tires to help
provide traction.
Restart the engine.
Shift the shift lever to the D or R and release the parking brake.
Then, while exercising caution, depress the accelerator pedal.
■ When it is difficult to free the vehicle
Carry out the following procedures if the tires spin or the vehicle
becomes stuck in mud, dirt, or snow:
Press to turn off TRAC. ( P. 294)
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Page 604 of 668

604
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9-1. Specifications
*1: Minimum pedal clearance when depressed with a force of 110 lbf (490 N,50 kgf) while the engine is running
*2: Parking brake pedal travel when depressed with a force of 67.4 lbf (300 N,30.6 kgf)
17-inch tires
18-inch tires
Brakes
Pedal clearance*12.99 in. (76 mm)
Pedal free play 0.04 0.24 in. (1 6 mm)
Brake pad wear limit0.04 in. (1.0 mm)
Parking brake lining wear limit 0.04 in. (1.0 mm)
Parking brake pedal travel*23 6 clicks
Fluid type SAE J1703 or FMVSS No.116 DOT 3
Steering
Free play Less than 1.2 in. (30 mm)
Tires and wheels
Tire sizeP235/60R17 100T
Tire inflation pressure
(Recommended cold tire
inflation pressure)Front:
35 psi (240 kPa, 2.4 kgf/cm2 or bar)
Rear:
35 psi (240 kPa, 2.4 kgf/cm
2 or bar)
Wheel size 17 x 7J
Wheel nut torque76 ft•lbf (103 N•m, 10.5 kgf•m)
Tire size P235/55R18 99V, P235/55RF18 99T
Tire inflation pressure
(Recommended cold tire
inflation pressure)Front:
35 psi (240 kPa, 2.4 kgf/cm2 or bar)
Rear:
35 psi (240 kPa, 2.4 kgf/cm
2 or bar)
Wheel size 18 x 7J
Wheel nut torque76 ft•lbf (103 N•m, 10.5 kgf•m)
Page 605 of 668
SIENNA_OM_OM08013U_(U)
6059-1. Specifications
9
Vehicle specifications
19-inch tires
Compact spare tire (2WD models)
Tire sizeP235/50R19 99V
Tire inflation pressure
(Recommended cold tire
inflation pressure)Front:
36 psi (250 kPa, 2.5 kgf/cm2 or bar)
Rear:
36 psi (250 kPa, 2.5 kgf/cm
2 or bar)
Wheel size 19 x 7J
Wheel nut torque76 ft•lbf (103 N•m, 10.5 kgf•m)
Tire size T155/80R17 101M
Tire inflation pressure
(Recommended cold tire
inflation pressure)60 psi (420 kPa, 4.2 kgf/cm2 or bar)
Wheel size
17 x 4T
Wheel nut torque76 ft•lbf (103 N•m, 10.5 kgf•m)
Page 611 of 668

SIENNA_OM_OM08013U_(U)
6119-1. Specifications
9
Vehicle specifications
Tire size( P. 612)
DOT and Tire Identification Number (TIN) ( P. 612)
Uniform tire quality grading
For details, see “Uniform Tire Quality Grading” that follows.
Location of treadwear indicators ( P. 492)
Run-flat tire (RFT) or standard tire ( P. 566)
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. 495)
Maximum cold tire inflation pressure ( P. 604)
This means the pressure to which a tire may be inflated.
Summer tires or all season tires ( P. 496)
An all season tire has “M+S” on the sidewall. A tire not marked “M+S”
is a summer tire.
“TEMPORARY USE ONLY” ( P. 579)
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.
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Page 614 of 668

614
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9-1. Specifications
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 prospective purchasers of Toyota
vehicles with information on uniform tire quality grading.
Your Toyota dealer will help answer any questions you may have as
you read this information.
■DOT quality grades
All passenger vehicle tires must conform 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 conditions on a speci-
fied 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 tire s depends upon the actual condi-
tions 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.
■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 controlled conditio ns on specified government 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 (turn-
ing) traction.
Uniform Tire Quality Grading
Page 615 of 668

SIENNA_OM_OM08013U_(U)
6159-1. Specifications
9
Vehicle specifications
■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 dissi-
pate heat when tested under cont rolled conditions 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 performance which all passenger
car tires must meet under the Federal Motor Vehicle Safety
Standard No. 109.
Grades B and A represent higher le vels of performance on the labo-
ratory 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 excessive loading, either sepa-
rately or in combination, can cause heat buildup and possible tire
failure.
Page 652 of 668
652What to do if... (Troubleshooting)
SIENNA_OM_OM08013U_(U)
●When a warning light turns on or a warning message is displayed, refer to
P. 541, 550.
●Vehicles with run-flat tires:
Slow down the vehicle, drive with extra caution, and take your vehicle
to the nearest Toyota dealer or authorized tire dealer as soon as possi-
ble to have the tire replaced. ( P. 566)
●Vehicles with a compact spare tire:
Stop the vehicle in a safe place and replace the flat tire with the spare
tire. ( P. 568)
●Try the procedure for when the vehicle becomes stuck in mud, dirt, or
snow. ( P. 594)
A warning light turns on or a warning message is displayed
When a problem has occurred
If you have a flat tire
The vehicle becomes stuck
Page 662 of 668

662Alphabetical index
SIENNA_OM_OM08013U_(U)
Parking assist sensors (intuitive parking assist) ....... 275
Parking brake ........................... 238 Operation .............................. 238
Parking brake engaged warning
buzzer/message ......... 541, 554
Parking lights
Light switch ........................... 239
Replacing light bulbs..... 521, 527
Wattage ................................ 606
PCS (Pre-Collision System) Function ................................ 298
Pre-collision braking off switch ................................. 299
Warning light ......................... 542
Warning message ............. 551, 556, 560
Personal lights Switch ................................... 424
Wattage ................................ 606
Power back door...................... 133
Power outlets ........................... 441
Power windows Jam protection function......... 185
Operation .............................. 184
Window lock switch............... 184
Pre-collision system (PCS) Function ................................ 298
Pre-collision braking off switch ................................. 299
Warning light ......................... 542
Warning message ............. 551, 556, 560 Quarter windows ..................... 187
Radar cruise control
(dynamic radar cruise
control)................................... 263
Radiator .................................... 487
Radio
*...................................... 336
Rear automatic air conditioning system ............. 417
Rear ceiling light ..................... 425
Rear seat
Adjustment............................ 152
Folding third seats ........ 159, 160
Installing second seats ......... 158
Removing second seats ....... 156
Stowing third seats ....... 161, 163
Rear seat entertainment system
*
Rear turn signal lights Replacing light bulbs ............ 524
Turn signal lever ................... 237
Wattage ................................ 606
Rear view mirror Compass .............................. 453
Inside rear view mirror .......... 179
Outside rear view mirrors ..... 181
Rear view monitor system ...... 283
Rear window defogger ............ 412
Rear window wiper .................. 254
Replacing Electronic key battery ........... 507
Fuses .................................... 510
Light bulbs ............................ 513
Rear seat entertainment system control battery
*
Tires...................................... 568
Wireless remote control battery ................................ 507
PQ
R