2016 TOYOTA SIENNA engine

4146-1. Using the air conditioning system and defogger
SIENNA_OM_OM08013U_(U)
■Using automatic mode
Fan speed is adjusted automatically according to the temperature setting and
the ambient conditions.
Therefore, the fan may stop for a while until warm or cool air is ready to flow
immediately after the “AUTO” button is pressed.
■ When the outside temperature exceeds 75°F (24°C) and the air condition-
ing system is on
●In order to reduce the air conditioning power consumption, the air condition-
ing system may switch to recirculated air mode automatically.
This may also reduce fuel consumption.
● Recirculated air mode is selected as a default mode when 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).
● It is possible to switch to outside air mode at any time by pressing .
■ Fogging up of the windows
●The windows will easily fog up when the humidity in the vehicle is high.
Pressing “A/C” button on will dehumidify the air from the outlets and defog
the windshield effectively.
● If you turn “A/C” off, the windows may fog up more easily.
● The windows may fog up if the recirculated air mode is used.
■ Outside/recirculated air mode
●When driving on dusty roads such as tunnels or in heavy traffic, set
to the recirculated air mode. This is effective in preventing outside air from
entering the vehicle interior. During cooling operation, setting the recircu-
lated air mode will also cool the vehicle interior effectively.
● Outside/recirculated air mode may automatically switch depending on the
temperature setting or the inside temperature.

4166-1. Using the air conditioning system and defogger
SIENNA_OM_OM08013U_(U)
WARNING
■To prevent the windshield from fogging up
●Do not use during cool air operat ion in extremely humid weather.
The difference between the temperature of the outside air and that of the
windshield can cause the outer surface of the windshield to fog up, block-
ing your vision.
■ To prevent burns
●Do not touch the rear view mirror surfaces when the outside rear view mir-
ror defoggers (vehicles with outside rear view mirror defoggers) are on.
● Do not touch the glass at lower part of the windshield or to the side of the
front pillars when the windshield wiper de-icer is on. (vehicles with wind-
shield wiper de-icer)
NOTICE
■To prevent battery discharge
Do not leave the air conditioning system on longer than necessary when the
engine is stopped.
●Do not place anything on the instrument
panel which may cover the air outlets.
Otherwise, air flow may be obstructed,
preventing the windshield defoggers
from defogging.

SIENNA_OM_OM08013U_(U)
4196-1. Using the air conditioning system and defogger
6
Interior features
■Adjusting the position of the air outlets
Direct air flow to the front or
rear, up or down.
■Temperature display
The temperature display on the multi-information display can be changed.
( P. 622)
■ When the front air conditioning system is in simultaneous mode
The lower side indicator on the “SYNC” button is on. The rear air conditioning
system controls will continue to function. ( P. 408)
NOTICE
■To prevent battery discharge
Do not leave the air conditioning system on longer than necessary when the
engine is stopped.

420
SIENNA_OM_OM08013U_(U)
6-1. Using the air conditioning system and defogger
Heated steering wheel/seat heaters
: If equipped
Heated steering wheel and seat heaters heat the side grips of the
steering wheel and seats, respectively.
WARNING
●Care should be taken to prevent injury if anyone in the following categories
comes in contact with the steering wheel and seats when the heater is on:
• Babies, small children, the elderly, the sick and the physically chal-
lenged
• Persons with sensitive skin
• Persons who are fatigued
• Persons who have taken alcohol or drugs that induce sleep (sleeping drugs, cold remedies, etc.)
● Observe the following precautions to prevent minor burns or overheating:
• Do not cover the seat with a blanket or cushion when using the seat
heater.
• Do not use seat heater more than necessary.
NOTICE
● Do not put heavy objects that have an uneven surface on the seat and do
not stick sharp objects (needles, nails, etc.) into the seat.
● To prevent battery discharge, do not use the functions when the engine is
not running.

SIENNA_OM_OM08013U_(U)
4216-1. Using the air conditioning system and defogger
6
Interior features
Turns the heated steering wheel
on/off
The indicator light comes on when
the heated steering wheel is oper-
ating.
●The heated steering wheel can be used when the engine switch is in IGNI-
TION ON mode.
● The heated steering wheel will automatically turn off after about 30 minutes.
Heated steering wheel

4226-1. Using the air conditioning system and defogger
SIENNA_OM_OM08013U_(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
1
2
3
4

423
SIENNA_OM_OM08013U_(U)
6-2. Using the interior lights
6
Interior features
Interior lights list
Rear personal/interior lights ( P. 424)
Rear ceiling lights (if equipped) ( P. 425)
Front personal/interior lights ( P. 424)
Engine switch light
Front door courtesy lights (if equipped)
Outer foot lights (if equipped)1
2
3
4
5
6

SIENNA_OM_OM08013U_(U)
4256-2. Using the interior lights
6
Interior features
Turns the lights on/off
When the personal/interior light
main switch is in the off position,
the rear ceiling lights will not turn
on even if the switch is on.
■Adjusting the rear personal/interior lights angle (if equipped)
■ Illuminated entry system
Vehicles without a smart key system
The lights automatically turn on/off according to the engine switch position,
whether the doors are locked/ unlocked, and whether the doors are open/
closed.
Vehicles with a smart key system
The lights automatically turn on/off according to engine switch mode, the
presence of the electronic key, whether the doors are locked/unlocked, and
whether the doors are open/closed.
■ To prevent battery discharge
If the interior lights remain on when the engine switch is turned off, the lights
will go off automatically after 20 minutes.
■ Customization
Settings (e.g. the time elapsed before lights turn off) can be changed.
(Customizable features: P. 630)
Rear ceiling lights (if equipped)
Push the edge of the light lens.
NOTICE
■Rear ceiling lights (if equipped)
Do not hang anything on the gap between the ceiling light cover and the
ceiling or pull the ceiling light cover strongly.
Doing so may cause damage.