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1-3. Adjustable components (s
eats, mirrors, steering wheel)
1
Before driving
SIENNA_OM_OM45483U_(U)
Folding down the third seats (power seats)
You can operate the power third seats when the shift lever is in P.
■ Before folding the third seats
Lower the center head restraints
to the lowest position and stow
the seat belt buckles.
Stow the center seat belt. ( P. 131)
■ Folding down the third seatbacks
Press the folding/returning
switch.
■ Returning the third seatbacks
Press the folding/returning switch, returning switch (P. 11 5 ) o r
seatback angle adjustment switch ( P. 102).
ITN13N048
STEP1
STEP2
ITN13N049
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CAUTION
■When folding the rear seatbacks down
Observe the following precautions. Failure to do so may result in death or
serious injury.
●Do not fold the seatbacks down while driving.
● Stop the vehicle on level ground, set the parking brake and shift the shift
lever to P.
● Do not allow anyone to sit on a folded seatback or in the luggage compart-
ment while driving.
● Do not allow children to enter the luggage compartment.
● Be careful not to get any part of your body pinched by a seat.
■ Seat adjustment
To reduce the risk of sliding under the lap belt during a collision, do not
recline the seat more than necessary.
If the seat is reclined too far, the lap belt may slide past the hips and apply
restraint forces directly to the abdomen, or your neck may contact the shoul-
der belt, increasing the risk of death or serious injury in the event of\
an acci-
dent.
Adjustments should not be made while driving as the seat may unexpectedly
move and cause the driver to lose control of the vehicle.
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SIENNA_OM_OM45483U_(U)
■Operating the driving position memo ry after turning the engine off
Vehicles without a smart key system
Memorized positions can be activated up to 180 seconds after the driver’s
door is opened and another 60 seconds after it is closed again, even after
turning the engine switch to the “LOCK” position.
Vehicles with a smart key system
Memorized positions can be activated up to 180 seconds after the driver’s
door is opened and another 60 seconds after it is closed again, even after
turning the “ENGINE START STOP” switch off.
■ Stopping seat position ope ration part-way through
Perform any of the following operations.
● Press the “SET” button.
● Press button “1” or “2”.
● Adjust the seat using the switches (only cancels seat position recall).
CAUTION
■Seat adjustment caution
Take care during seat adjustment so that the seat does not strike the rear
passenger or squeeze your body against the steering wheel.
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SIENNA_OM_OM45483U_(U)
Steering wheel
CAUTION
■Caution while driving
Do not adjust the steering wheel while driving.
Doing so may cause the driver to mishandle the vehicle and cause an acci-
dent, resulting in death or serious injury.
■ After adjusting the steering wheel
Make sure that the steering wheel is securely locked.
Otherwise, the steering wheel may move suddenly, possibly causing an
accident and resulting in death or serious injury.
The steering wheel can be adjust ed to a comfortable position.
Hold the steering wheel and
press the lever down.
Adjust to the ideal position by
moving the steering wheel
horizontally and vertically.
After adjustment, pull the lever
up to secure the steering
wheel.
STEP1
STEP2
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SIENNA_OM_OM45483U_(U)
■Mirror angle can be adjusted when
Vehicles without a smart key system
The engine switch is in the “ACC” or “ON” position.
Vehicles with a smart key system
The “ENGINE START STOP” switch is in ACCESSORY or IGNITION ON
mode.
■ When the mirrors are fogged up (veh icles with outside rear view mirror
defoggers)
Turn on the mirror defoggers to defog the mirrors. ( P. 421)
■ Automatic adjustment of the mirror angle (vehicles with driving posi-
tion memory)
A desired mirror face angle can be entered to memory and recalled automat-
ically by the driving position memory. ( P. 121)
■ Auto anti-glare function (vehicles with auto anti-glare inside rear view
mirror)
When the anti-glare inside rear view mirror is set to automatic mode, the out-
side rear view mirrors wi ll activate in conjunction with the anti-glare inside
rear view mirror to reduce reflected light. ( P. 139)
■ Linked mirror function wh en reversing (if equipped)
The outside rear view mirrors will automatically angle downwards when the
vehicle is reversing in order to give a better view of the ground. However,
this function will not operate when the mirror select switch is in the n\
eutral
position (between “L” and “R”).
Page 755 of 872

5
When trouble arises
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5-2. Steps to take in an emergency
SIENNA_OM_OM45483U_(U)
CAUTION
■When the electric power steering system warning light comes on
The steering wheel may become extremely heavy.
If the steering wheel becomes heavier than usual when operating, hold
firmly and operate using more force than usual.
■If the tire pressure warning light comes on
Be sure to observe the following precautions. Failure to do so could
cause loss of vehicle control and result in death or serious injury.
●Vehicles with standard tires:
• Stop your vehicle in a safe place as soon as possible. Adjust the
tire inflation pressure immediately.
• If the tire pressure warning light comes on even after tire inflation pressure adjustment, it is probable that you have a flat tire. Check
the tires. If a tire is flat, change it with the spare tire and have the
flat tire repaired by the nearest Toyota dealer.
• Avoid abrupt maneuvering and brak ing. If the vehicle tires deterio-
rate, you could lose control of th e steering wheel or the brakes.
●Vehicles with run-flat tires:
• Decelerate to the lowest appropr iate speed as soon as possible.
Do not drive over 50 mph (80 km/h).
• Check and adjust the tire inflation pressure immediately.
• If the tire pressure warning light comes on even after tire inflation pressure adjustment, it is probable that you have a flat tire. Have
the tire replaced by the nearest Toyota dealer.
• Avoid abrupt maneuvering and brak ing. If the vehicle tires deterio-
rate, you could lose control of th e steering wheel or the brakes.
Page 864 of 872

864 Alphabetical index
SIENNA_OM_OM45483U_(U)
Spare tireInflation pressure................... 808
Storage location .................... 761
Spark plug ................................ 803
Specifications........................... 798
Speech command switch ........ 551
Speedometer ............................ 246
Steering wheel Adjustment ............................ 138
Audio switches ...................... 479
Column lock release...... 229, 235
Stop lights
Replacing light bulbs ............. 724
Storage feature......................... 588
Storage precautions ................365
Stuck If your vehicle becomes stuck ................................... 793
Sunshades Rear door .............................. 619
Roof....................................... 151
Sun visors................................. 606
Switch
Engine switch ................ 228, 231
Fog light switch ..................... 284
Ignition switch................ 228, 231
Light switches........................ 270
Power back door .....................82
Power door lock switch ...........61
Power window switch .... 145, 149
Window lock switch ............... 145
Wiper and washer switch .......................... 286, 294 Tachometer .............................. 246
Tail lights
Replacing light bulbs ............. 724
Switch ................................... 270
Wattage................................. 809
Talk switch ............................... 551
Telephone switch..................... 551
Theft deterrent system Alarm..................................... 163
Engine immobilizer system ... 160
Theft prevention labels ........... 167
Tire inflation pressure ............. 699
Tire information Glossary ................................ 821
Size ....................................... 807
Tire identification number...... 816
Uniform tire quality grading................................ 818
Tires Chains ................................... 369
Checking ............................... 688
If you have a flat tire...... 759, 761
Inflation pressure .................. 699
Information ............................ 814
Replacing .............................. 761
Rotating tires ......................... 689
Size ....................................... 807
Snow tires ............................. 369
Tire pressure warning system ........................ 688, 748
Tools ......................................... 761
Total load capacity .................. 368T