
SIENNA_OM_01999-08001_(U)
4116-1. Using the air conditioning system and defogger
6
Interior features
■Temperature display
The temperature display on the multi-information display can be changed.
(P. 618)
■ When
is selected for the air outlets used
For your driving comfort, air flowing to the feet may be warmer than air flow-
ing to the upper body depending on the temperature setting.
■ When the outside temperature is low
The dehumidification function may not operate even when the “A/C” button is
pressed.
■ When “A/C ON” flashes in the display
Press the “A/C” button and turn off the air conditioning system before turning it
on once more. There may be a problem in the air conditioning system if “A/C
ON” continues to flash. Turn the air conditioning system off and have it
inspected by your Toyota dealer.
■ Ventilation and air conditioning odors
●To let fresh air in, set the air conditioning system to the outside air mode.
● During use, various odors from inside and outside the vehicle may enter into
and accumulate in the air conditioning system. This may then cause odor to
be emitted from the vents.
● To reduce potential odors from occurring:
• It is recommended that the air conditioning system be set to outside air
mode prior to turning the vehicle off.
• The start timing of the blower may be delayed for a short period of time
immediately after the air conditioning system is started in automatic
mode.
■ Air conditioning filter
P. 501
■ Customization
Settings (e.g. “AUTO” button linked operation) can be changed.
(Customizable features: P. 625)

4186-1. Using the air conditioning system and defogger
SIENNA_OM_01999-08001_(U)
For driver’s seat
For front passenger’s seat
On
The indicator light comes on.
Adjusts the seat temperature
The further you move the dial
upward, the warmer the seat
becomes.
●The seat heaters can be used when the engine switch is in the “ON” position
(vehicles without a smart key system ) or IGNITION ON mode (vehicles with
a smart key system).
● When not in use, move the dial fully downward. The indicator light turns off.
Seat heaters
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SIENNA_OM_01999-08001_(U)
4556-4. Using the other interior features
6
Interior features
■Safety Connect Services Information
●Phone calls using the vehicles Bluetooth® technology will not be possible
during Safety Connect.
● Safety Connect is available beginning Fall 2009 on select Toyota models.
Contact with the Safety Connect response center is dependent upon the
telematics device being in operative condition, cellular connection availabil-
ity, and GPS satellite signal reception, which can limit the ability to reach the
response center or receive emergency service support. Enrollment and
Telematics Subscription Service Agreement are required. A variety of sub-
scription terms is available; charges vary by subscription term selected.
● Automatic Collision Notification, Emergency Assistance, Stolen Vehicle
Location, and Enhanced Roadside Assistance will function in the United
States, including Hawaii and Alaska, and in Canada. No Safety Connect
services will function outside of the United States in countries other than
Canada.
● Safety Connect services are not subject to section 255 of the Telecommuni-
cations Act and the device is not TTY compatible.
■ Languages
The Safety Connect response center will offer support in multiple languages.
The Safety Connect system will offer voice prompts in English and Spanish.
Please indicate your language of choice when enrolling.
■ When contacting th e response center
You may be unable to contact the response center if the network is busy.
When the engine switch is turned to the “ON” position (vehicles with-
out a smart key system) or IGNITION ON mode (vehicles with a smart
key system), the red indicator light comes on for 2 seconds then turns
off. Afterward, the green indicator light comes on, indicating that the
service is active.
The following indicator light patterns indicate specific system usage
conditions:
● Green indicator light on = Active service
● Green indicator light flashing = Sa fety Connect call in process
● Red indicator light (except at vehi cle start-up) = System malfunction
(contact your Toyota dealer)
● No indicator light (off) = Safety Connect service not active
Safety Connect LE D light Indicators

SIENNA_OM_01999-08001_(U)
4677-2. Maintenance
7
Maintenance and care
■Repair and replacement
It is recommended that genuine Toyota parts be used for repairs to ensure
performance of each system. If non-Toyota parts are used in replacement or if
a repair shop other than a Toyota dealer performs repairs, confirm the war-
ranty coverage.
■ Resetting the message indicating maintenance is required (U.S.A. only)
After the required maintenance is preformed according to the maintenance
schedule, please reset the message.
To reset the data, follow the procedures described below:
Using the odometer and trip meter display
Turn the engine switch to the “LOCK” position (vehicles without a smart key
system) or off (vehicles with a smart key system) with the trip meter A read-
ing shown. ( P. 88)
While pressing the odometer/trip meter display change button (P. 87),
turn the engine switch to the “ON” position (vehicles without a smart key
system) or IGNITION ON mode (vehicles with a smart key system) (do not
start the engine because otherwise the reset mode will be canceled).
Continue to press and hold the button until the trip meter displays “000000”
and the multi-information display indicates that the reset is complete.
Using the multi-information display (vehicles with color display)
While the engine is running, switch the multi-information display to the
“Settings” screen. ( P. 618)
Select “Maintenance Reset” on the “Settings” screen.
Select “Yes” on the “Maintenance Reset” screen.
“Maintenance Reset Complete” will be displayed on the multi-information dis-
play when the reset procedure has been completed.
■ Allow inspection and repairs to be performed by a Toyota dealer
●Toyota technicians are well-trained specialists and are kept up to date with
the latest service information. They are well informed about the operations
of all systems on your vehicle.
● Keep a copy of the repair order. It proves that the maintenance that has
been performed is under warranty cove rage. If any problem should arise
while your vehicle is under warranty, your Toyota dealer will promptly take
care of it.
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474
SIENNA_OM_01999-08001_(U)
7-3. Do-it-yourself maintenance
WARNING
The engine compartment contains many mechanisms and fluids that may
move suddenly, become hot, or become electrically energized. To avoid death
or serious injury, observe the following precautions:
■When working on the engine compartment:
● Keep hands, clothing and tools away from the moving fan and engine
drive belt.
● Be careful not to touch the engine, radiator, exhaust manifold, etc. right
after driving as they may be hot. Oil and other fluids may also be hot.
● Do not leave anything that may burn easily, such as paper and rags, in the
engine compartment.
● Do not smoke, cause sparks or expose an open flame to fuel or the bat-
tery. Fuel and battery fumes are flammable.
● Be extremely cautious when working on the battery. It contains poisonous
and corrosive sulfuric acid.
■ When working near the electric cooling fans or radiator grille
Be sure the engine switch is in the “LOCK” position (vehicles without a
smart key system) or off (vehicles with a smart key system). With the engine
switch in the “ON” position (vehicles without a smart key system) or IGNI-
TION ON mode (vehicles with a smart key system), the electric cooling fans
may automatically start to run if the air conditioning is on and/or the coolant
temperature is high. ( P. 483)
■ Safety glasses
Wear safety glasses to prevent flying or falling material, fluid spray, etc.
from getting in your eyes.
NOTICE
■If you remove the air cleaner filter
Driving with the air cleaner filter removed may cause excessive engine wear
due to dirt in the air.

SIENNA_OM_01999-08001_(U)
4857-3. Do-it-yourself maintenance
7
Maintenance and care
■Before recharging
When recharging, the battery produces hydrogen gas which is flammable and
explosive. Therefore, observe the following before recharging:
●If recharging with the battery installed on the vehicle, be sure to disconnect
the ground cable.
● Make sure the power switch on the charger is off when connecting and dis-
connecting the charger cables to the battery.
■ After recharging/reconnecting the ba ttery (vehicles with a smart key sys-
tem)
● Unlocking the doors using the smart key system may not be possible imme-
diately after reconnecting the battery. If this happens, use the wireless
remote control or the mechanical key to lock/unlock the doors.
● Start the engine with the engine switch in ACCESSORY mode. The engine
may not start with the engine switch turned off. However, the engine will
operate normally from the second attempt.
● The engine switch mode is recorded by the vehicle. If the battery is recon-
nected, the vehicle will return the engine switch mode to the status it was in
before the battery was disconnected. Make sure to turn off the engine
before disconnecting the battery. Take extra care when connecting the bat-
tery if the engine switch mode prior to discharge is unknown.
If the system will not start even after multiple attempts, contact your Toyota
dealer.
■ Disconnecting the batt ery (vehicles with an AUTO ACCESS SEAT)
Do not disconnect the battery while operating the AUTO ACCESS SEAT. The
AUTO ACCESS SEAT will become inoperable.
For details, refer to “AUTO ACCESS SEAT OWNER’S MANUAL”.

494
SIENNA_OM_01999-08001_(U)
7-3. Do-it-yourself maintenance
■Tire pressure warning system certification
FCC ID:GQ4-45T
FCC ID:GQ4-37R
For vehicles sold in the U.S.A.
NOTE:
This device complies with part 15 of the FCC Rules. Operation is subject
to the following two conditions: (1) This device may not cause harmful
interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.
FCC WARNING:
Changes or modifications not ex pressly approved by the party
responsible for compliance could void the user’s authority to operate the
equipment.
For vehicles sold in Canada
NOTE:
Operation is subject to the following two conditions: (1) this device may
not cause interference, and (2) this device must accept any interference,
including interference that may cause undesired operation of the device.
WARNING
■When inspecting or replacing tires
Observe the following precautions to prevent accidents. Failure to do so
may cause damage to parts of the drive train, as well as dangerous han-
dling characteristics, which may lead to an accident resulting in death or
serious injury.
●Do not mix tires of different ma kes, models or tread patterns.
Also, do not mix tires of remarkably different treadwear.
●Do not use tire sizes other than those recommended by Toyota.
●Do not mix differently constructed ti res (radial, bias-belted or bias-ply
tires).
●Do not mix summer, all season and snow tires.
●Do not use tires that have b een used on another vehicle.
Do not use tires if you do not know how they were used previously.
●Vehicles with a compact spare tire: Do not tow if your vehicle has a
compact spare tire installed.
■When initializing the tire pressure warning system
Do not operate the tire pressure warning reset switch without first
adjusting the tire inflation pressure to the specified level. Otherwise, the
tire pressure warning light may not come on even if the tire inflation
pressure is low, or it may come on when the tire inflation pressure is
actually normal.

5408-2. Steps to take in an emergency
SIENNA_OM_01999-08001_(U)
*1: Parking brake engaged warning buzzer:P. 550
*2: If equipped
*3: Open door warning buzzer:P. 547
*4: Driver’s seat belt buzzer:
The driver’s seat belt buzzer sounds to alert the driver that his or her seat
belt is not fastened. Once the engine switch is turned to the “ON” position
(vehicles without a smart key system) or IGNITION ON mode (vehicles
with a smart key system), the buzzer sounds for 6 seconds. If the vehicle
reaches a speed of 12 mph (20 km/h), the buzzer sounds once. If the
seat belt is still unfastened after 30 seconds, the buzzer will sound inter-
mittently for 10 seconds. Then, if the seat belt is still unfastened, the
buzzer will sound in a different tone for 20 more seconds.
Front passenger’s seat belt buzzer:
The front passenger’s seat belt buzzer sounds to alert the front passen-
ger that his or her seat belt is not fastened. The buzzer sounds once if the
vehicle reaches a speed of 12 mph (20 km/h). If the seat belt is still unfas-
tened after 30 seconds, the buzzer will sound intermittently for 10 sec-
onds. Then, if the seat belt is still unfastened, the buzzer will sound in a
different tone for 20 more seconds.