Page 62 of 672
621-1. For safe use
SIENNA_OM_OM08007U_(U)
Second seats (7-passenger models)
Anchor brackets are provided for
both second seats.
Third seats
An anchor brackets are provided
for the right outboard seat and cen-
ter seat.
Fold the seatback while pulling
the lever and move to the rear-
most recline position.
Widen the gap between the seat cu shion and seatback slightly.
Installation with LATCH system (second seat)
1
2
Page 64 of 672
641-1. For safe use
SIENNA_OM_OM08007U_(U)
Manual seat
Fold the seatback while pulling
the strap. Return the seatback
and secure it at the 1st lock
position (most upright posi-
tion). Adjust the seatback to the
11th lock position.1st lock position
11th lock position
Power seat
Fold down the seatback by
pressing the folding/returning
switch ( P. 161). Raise the
seatback by pressing the same
switch, the returning switch
( P. 164) or the seatback angle
adjustment switch ( P. 154).
(The seatback will automatically
stop.) Do not touch the switch
while the seatback is moving,
because the operation will stop.
Widen the gap between the seat cu shion and seatback slightly.
Installation with LATCH system (third seat)
1
1
2
1
2
Page 71 of 672

711-1. For safe use
SIENNA_OM_OM08007U_(U)
1
For safety and security
■Laws and regulations pertaining to anchorages
The LATCH system conforms to FMVSS225 or CMVSS210.2.
Child restraint systems conforming to FMVSS213 or CMVSS213 specifica-
tions can be used.
This vehicle is designed to conform to the SAE J1819.
WARNING
■When installing a booster seat
To prevent the belt from going into ALR lock mode, do not fully extend the
shoulder belt. ALR mode causes the belt to tighten only. This could cause
injury or discomfort to the child. ( P. 32)
■ When installing a child restraint system
Follow the directions given in the child restraint system installation manual
and fix the child restraint system securely in place.
If the child restraint system is not correctly fixed in place, the child or other
passengers may be seriously injured or even killed in the event of sudden
braking, sudden swerving or an accident.
●If the driver’s seat interferes with the
child restraint system and prevents it
from being attached correctly, attach the
child restraint system to the right-hand
rear seat.
● Adjust the front passenger seat or sec-
ond seats so that it does not interfere
with the child restraint system.
● Only put a forward-facing child restraint
system on the front seat when unavoid-
able. When installing a forward-facing
child restraint system on the front pas-
senger seat, move the seat as far back
as possible even if the “AIR BAG OFF”
indicator light is illuminated. Failure to
do so may result in death or serious
injury if the airbags deploy (inflate).
Page 74 of 672

741-1. For safe use
SIENNA_OM_OM08007U_(U)
Exhaust gas precautions
Harmful substance to the human body is included in exhaust
gases if inhaled.
WARNING
Exhaust gases include harmful carbon monoxide (CO), which is colorless and
odorless. Observe the following precautions.
Failure to do so may cause exhaust gases enter the vehicle and may lead to
an accident caused by light-headedness, or may lead to death or a serious
health hazard.
■Important points while driving
●Keep the back door closed.
● If you smell exhaust gases in the vehicle even when the back door is
closed, open the windows and have the vehicle inspected at your Toyota
dealer as soon as possible.
■ When parking
●If the vehicle is in a poorly ventilated area or a closed area, such as a
garage, stop the engine.
● Do not leave the vehicle with the engine on for a long time.
If such a situation cannot be avoided, park the vehicle in an open space
and ensure that exhaust fumes do not enter the vehicle interior.
● Do not leave the engine running in an area with snow build-up, or where it
is snowing. If snowbanks build up around the vehicle while the engine is
running, exhaust gases may collect and enter the vehicle.
■ Exhaust pipe
The exhaust system needs to be checked periodically. If there is a hole or
crack caused by corrosion, damage to a joint or abnormal exhaust noise, be
sure to have the vehicle inspected and repaired by your Toyota dealer.
Page 75 of 672

751-2. Theft deterrent system
SIENNA_OM_OM08007U_(U)
1
For safety and security
Engine immobilizer system
Vehicles without a smart key
system
The indicator light flashes after
the key has been removed from
the engine switch to indicate that
the system is operating.
The indicator light stops flashing
after the registered key has been
inserted into the engine switch to
indicate that the system has been
canceled.
Vehicles with a smart key system
The indicator light flashes after the engine switch has been turned off
to indicate that the system is operating.
The indicator light stops flashing after the engine switch has been
turned to ACCESSORY or IGNITION ON mode to indicate that the
system has been canceled.
The vehicle’s keys have built-in transponder chips that prevent
the engine from starting if a key has not been previously regis-
tered in the vehicle’s on-board computer.
Never leave the keys inside the vehicle when you leave the vehi-
cle.
This system is designed to help prevent vehicle theft but does not
guarantee absolute security against all vehicle thefts.
Page 77 of 672

771-2. Theft deterrent system
SIENNA_OM_OM08007U_(U)
1
For safety and security
Alar m
The alarm uses light and sound to give an alert when an intrusion is
detected.
The alarm is triggered in the following situations when the alarm is
set:
●A locked door is unlocked or opened in any way other than using
the entry function (vehicles with a smart key system) or wireless
remote control. (The doors will lock again automatically.)
● The hood is opened.
Close the doors and hood, and
lock all the doors using the entry
function (vehicles with a smart key
system) or wireless remote con-
trol. The system will be set auto-
matically after 30 seconds.
The indicator light changes from
being on to flashing when the sys-
tem is set.
Do one of the following to deactivate or stop the alarm:
● Unlock the doors using the entry function (vehicles with a smart key
system) or wireless remote control.
● Vehicles without a smart key system : Turn the engine switch to the
“ACC” or “ON” position, or start the engine.
Vehicles with a smart key system: Turn the engine switch to
ACCESSORY or IGNITION ON mode, or start the engine.
(The alarm will be deactivated or stopped after a few seconds.)
: If equipped
The alarm
Setting the alarm system
Deactivating or stopping the alarm
Page 81 of 672
81
SIENNA_OM_OM08007U_(U)
Instrument cluster2
2. Instrument clusterWarning lights and indicators .......................... 82
Gauges and meters ............ 87
Multi-information display (with monochrome
display) ............................. 90
Multi-information display (with color display) ............ 93
Fuel consumption information ...................... 100
Page 82 of 672
82
SIENNA_OM_OM08007U_(U)
2. Instrument cluster
Warning lights and indicators
Vehicles with monochrome display
Vehicles with color display
The units used on the meters and some indicators may differ depending on
the target region.
The warning lights and indicators on the instrument cluster and
center panel inform the driver of the status of the vehicle’s vari-
ous systems.
For the purpose of explanation, the following illustration dis-
plays all warning lights a nd indicators illuminated.