
752 5-2. Steps to take in an emergency
SIENNA_OM_OM45472U_(U)
*1:Open door warning buzzer:A buzzer will sound if the vehicle reaches a speed of 3 mph (5 km/h) with any
door open.
*2:Driver’s and front passenger’s seat belt warning buzzers:The driver’s and front passenger’s seat belt warning buzzers sound to alert
the driver and front passenger that his or her seat belt is not fastened. The
buzzer sounds intermittently for 10 seconds after the vehicle has reached a
speed of 12 mph (20 km/h). Then, if the seat belt is still unfastened, the
buzzer will sound at a different tone for 20 more seconds.
*3:Refer to the separate “Scheduled Maintenance Guide” or “Owner’s ManualSupplement” for the maintenance interval applicable to your vehicle.
Warning lightWarning light/DetailsCorrection procedure
(AWD models) Active Torque Control
4WD system warning light
When the light blinks: The
system has been over-
loaded and front-wheel
drive has been automati-
cally engaged. Drop your speed or stop the
vehicle until the light stops
blinking. (Do not stop the
engine.)
When the light comes on:
Malfunction in the Active
Torque Control 4WD sys-
tem. Have the system checked
by your Toyota dealer.

770 5-2. Steps to take in an emergency
SIENNA_OM_OM45472U_(U)Firmly tighten each wheel nut
two or three times in the order
shown in the
illustration.
Tightening torque:
76 ft•lbf (103 N•m, 10.5 kgf•m)
Stow the flat tire, tire jack and all tools.
Stowing the flat tire
Remove clasps and strap.
Place tire standing up in rear tub,
after putting the tire in the tire
bag.
STEP4
STEP5
STEP1
STEP2

5
When trouble arises
775
5-2. Steps to take in an emergency
SIENNA_OM_OM45472U_(U)
CAUTION
■Replacing a flat tire
●Observe the following precautions.
Failure to do so may resu
lt in serious injury:
• Do not touch the disc wheels or the area around the brakes imme- diately after the vehicle has been driven.
After the vehicle has been driven the disc wheels and the area
around the brakes will be extremely hot. Touching these areas with
hands, feet or other body parts while changing a tire, etc. may
result in burns.
• Remove the spare tire before jacking up the vehicle. If the spare tire is removed after jacking up the vehicle, the tire carrier and the
spare tire may interfere with the jack and cause a serious accident.
●Failure to follow these precautions could cause the wheel nuts to
loosen and the tire to fall off, resulting on death or serious injury.
• Have the wheel nuts tightened with a torque wrench to 76 ft•lbf(103 N•m, 10.5 kgf•m) as soon as possible after changing wheels.
• When installing a tire, only use wheel nuts that have been specifi- cally designed for that wheel.
• If there are any cracks or deformations in the bolt screws, nut threads or bolt holes of the wh eel, have the vehicle inspected by
your Toyota dealer.
• When installing the wheel nuts, be sure to install them with the
tapered end facing inward. ( P. 705)

810 6-1. Specifications
SIENNA_OM_OM45472U_(U)
Tires and wheels
17-inch tires
18-inch tires
Tire size P235/60R17 100T,
T155/80R17 101M (spare)
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/cm2 or bar)
Spare: 60 psi (420 kPa, 4.2 kgf/cm2 or bar)
Wheel size 17 x 7J, 17 x 4T (spare)
Wheel nut torque76 ft•lbf (103 N•m, 10.5 kgf•m)
Tire size P235/55R18 99V, P235/55RF18 99T,
T155/80R17 101M (spare)
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/cm2 or bar)
Vehicles without run-flat tires:
Spare: 60 psi (420 kPa, 4.2 kgf/cm
2 or bar)
Wheel size 18 x 7J, 17 x 4T (spare)
Wheel nut torque76 ft•lbf (103 N•m, 10.5 kgf•m)

811
6-1. Specifications
6
Vehicle specifications
SIENNA_OM_OM45472U_(U)
19-inch tires
Tire size
P235/50R19 99V,
T155/80R17 101M (spare)
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/cm2 or bar)
Spare:60 psi (420 kPa, 4.2 kgf/cm2 or bar)
Wheel size 19 x 7J, 17 x 4T (spare)
Wheel nut torque76 ft•lbf (103 N•m, 10.5 kgf•m)

860
SIENNA_OM_OM45472U_(U)
Alphabetical index
Alphabetical index
A/C .....................394, 402, 412, 415
ABS ...........................................329
Active head restraint ................. 98
Active Torque Control 4WD system ...........................330
Air conditioning filter............... 706
Air conditioning system Air conditioning filter ..............706
Front automatic air
conditioning system ............402
Front manual air conditioning system ............394
Rear automatic air conditioning system ............415
Rear manual air
conditioning system ............412
Airbags Airbag operating
conditions............................ 173
Airbag precautions for your child ....................... 177
Airbag warning light............... 746
Curtain shield airbag operating conditions............173
Curtain shield airbag precautions .........................177
Front passenger occupant
classification system ...........183
General airbag precautions .........................177
Locations of airbags ..............168
Modification and disposal of airbags ..............182
Proper driving posture ........................166, 177
Side and curtain shield
airbags operating
conditions............................ 173
Side and curtain shield
airbags precautions ............177
SRS airbags .......................... 168 Alarm......................................... 162
Antenna ............................ 432, 481
Anti-lock brake system ........... 329
Armrest ..................................... 614
Assist grips .............................. 616
Audio input ............................... 476
Audio system
A/V input port ........................ 530
Antenna................................. 432
Audio input ............................ 476
Audio visual input .................. 530
AUX port ............................... 476
CD player/changer ................ 436
DVD player.... 513, 523, 527, 528
iPod ....................................... 456
MP3/WMA disc ..................... 445
Optimal use ........................... 471
Portable music player ........... 476
Radio..................................... 426
Rear seat entertainment system ......... 502
Steering wheel audio switch.................................. 477
Type ...................................... 421
USB memory......................... 463
Audio visual input.................... 476
Automatic light control system .................................... 268
Automatic transaxle Automatic transaxle .............. 236
If the shift lever cannot be
shifted from P ..................... 780
S mode.................................. 238
Auxiliary box ........................... 599
AUX port ................................... 476
A/V input port ........................... 476A

869
Alphabetical index
SIENNA_OM_OM45472U_(U)
Towing
Dinghy towing ....................... 391
Trailer towing ........................ 371
Traction control ....................... 329
TRAC ........................................ 329
Trailer towing........................... 371
Trip information display ......... 254
Trip meter................................. 244
Turn signal lights Replacing light bulbs ............ 725
Switch ................................... 241
Wattage ................................ 812
Valet key..................................... 32
Vanity lights Vanity lights .......................... 605
Wattage ................................ 812
Vanity mirrors .......................... 605
VDIM ......................................... 330
Vehicle data recordings............ 26
Vehicle identification number................................... 801
Vehicle stability control .......... 329
VSC ........................................... 329 Warning buzzers
Brake system ........................745
Open door .............................749
Seat belt reminder .................749
Warning lights Active Torque Control 4WD
system ................................752
Anti-lock brake system ..........747
Automatic High Beam indicator light.......................748
Brake assist system ..............747
Brake system ........................745
Charging system .... ...............746
Cruise control indicator light .....................................748
Electric power steering system ................................747
Engine oil pressure ...............746
Low fuel level ........................749
Low washer fluid ...................750
Maintenance required reminder light ......................751
Malfunction indicator lamp ....746
Master warning light ..............749
Open door .............................749
Pre-collision system ..............747
Pretensioners ........................746
Radar cruise control indicator light.......................748
Seat belt reminder light .........749
Slip indicator light ..................747
SRS airbags ..........................746
Third seat warning light ......... 751
Tire pressure warning light ....750
Warning messages ..................760
Washer Checking ...............................687
Preparing and checking
before winter .......................367
Switch............................284, 292
Washing and waxing ...............646
V
W

873
What to do if...
SIENNA_OM_OM45472U_(U)
■
Warning lights
P. 749
or
P. 7 4 5P. 749
P. 7 4 6P. 749
P. 7 4 6P. 751
P. 747
or
P. 7 4 6P. 749
P. 7 4 6P. 749
P. 752
or
P. 7 4 7P. 747
P. 7 4 7P. 748
P. 7 5 1P. 748
P. 7 5 0P. 748
P. 7 5 0P. 747
*: The light flashes to indicate a malfunction.
Brake system warning
lightOpen door warning light
Driver’s seat belt
reminder light
Charging system
warning lightFront passenger’s seat belt
reminder light
Low engine oil pressure
warning lightThird seat warning light
Malfunction indicator
lamp
Master warning light
SRS warning lightLow fuel level warning
light
“ABS” warning light
Pre-collision system
warning light
*
Slip indicator lightCruise control indicator
light
*
Maintenance required
reminder lightRadar cruise control
indicator light
*
Tire pressure warning
lightAutomatic High Beam
indicator light
*
Low washer fluid
warning lightBSM warning light
Electric power steering
system warning light
Active torque control
4WD system warning
light