Page 419 of 872
419
3-1. Using the air conditioning system
and defogger
3
Interior features
SIENNA_OM_OM45483U_(U) Air flows to the feet.
■ Adjusting the fan speed
Press “ ” on to increase the fan speed and “ ” to decrease
the fan speed.
Press to turn the fan off.
Adjusting the position of the air outlets
Direct air flow to the front or rear,
up or down.
Page 420 of 872
420 3-1. Using the air conditioning system and defogger
SIENNA_OM_OM45483U_(U)
■Temperature display
The temperature display (English/U.S. Customary System and metric units)
on the trip information display can be changed. ( P. 260)
■ When the front air conditioning s ystem is in simultaneous mode
“SYNC” is shown on the display. The rear air conditioning system controls
will continue to function. ( P. 406)
NOTICE
■To prevent battery discharge
Do not leave the air conditioning system on longer than necessary when the
engine is off.
Page 421 of 872
421
3-1. Using the air conditioning system and defogger
3
Interior features
SIENNA_OM_OM45483U_(U)
Rear window and outside rear view mirror defoggers, and windshield wiper de-icer
The rear window defogger is used to defog the rear window. The out-
side rear view mirror defoggers
*1 are used to remove frost, dew or
raindrops from the outside rear view mirrors. The windshield wiper
de-icer
*2 is used to prevent ice from building up on the windshield
and wiper blades.
Vehicles with manual air conditioning system
Turns the rear window and
outside rear view mirror defog-
gers and windshield wiper de-
icer on/off.
The defoggers and de-icer will
automatically turn off after
approximately 15 minutes.
If outside temperature is below
32F (0 C), this will extend by
45 minutes.
Vehicles with automatic air conditioning system
*1: Vehicles with outside rear view mirror defoggers
*2: Vehicles with windshield wiper de-icer
Page 422 of 872

422 3-1. Using the air conditioning system and defogger
SIENNA_OM_OM45483U_(U)
■The defogger can be operated when
Vehicles without a smart key system
The engine switch is in the “ON” position.
Vehicles with a smart key system
The “ENGINE START STOP” switch is IGNITION ON mode.
■ Outside rear view mirror defoggers (vehicles with outside rear view
mirror defoggers)
Turning the rear window defogger on will turn the outside rear view mirror
defoggers on.
■ The outside rear view mirror defo ggers and windshield wiper de-icer
(vehicles with windshield wiper de-icer)
Turning the rear window defogger on will turn the outside rear view mirror
defoggers and windshield wiper de-icer on.
CAUTION
■ Outside rear view mirror defoggers (vehicles with outside rear view
mirror defoggers)
The surfaces of the outside rear view mirrors become hot. Do not touch
them to prevent from burning yourself.
■ When the windshield wiper de-icer is on (vehicles with windshield
wiper de-icer)
Do not touch the glass at the lower part of the windshield or to the side of the
front pillars as the surfaces can become very hot and burn you.
Page 495 of 872
495
3-3. Using the Bluetooth
® audio system
3
Interior features
SIENNA_OM_OM45483U_(U)
■
When using a voice command
For numbers, say a combination of single digits from zero to nine.
Say the command correctly and clearly.
■ Situations in which the system may not recognize your voice
● When driving on rough roads
● When driving at high speeds
● When air is blowing out of the vents onto the microphone
● When the air conditioning fan emits a loud noise
■ Operations that cannot be performed while driving
●Operating the system with
● Registering a portable player to the system
■ Changing the passkey
P. 501
Page 547 of 872

547
3-5. Using the hand
s-free phone system (for cellular phone)
3
Interior features
SIENNA_OM_OM45483U_(U)
■Conditions under which the system will not operate
●If using a mobile phone that does not support Bluetooth
®
●If the mobile phone is switched off
● If you are outside service range
● If the mobile phone is not connected
● If the mobile phone’s battery is low
● If the mobile phone is behind the seat or in the glove box or console box
● If metal is covering or touching the phone
■ When using the hands-free system
●The audio system and voice guidance are muted when making a call.
● If both parties speak at the same time, it may be difficult to hear.
● If the incoming call volume is overly loud, an echo may be heard.
● Try to face toward the microphone as much as possible when speaking.
● In the following circumstances, it may be difficult to hear the other party:
• When driving on unpaved roads
• When driving at high speeds
• When a window is open
• When the air conditioning is blowing directly on the microphone
• When the air conditioning is set to high
■ When transferring ownership of the vehicle
Be sure to initialize the system to prevent personal data from being improp-
erly accessed.
Page 558 of 872
558 3-5. Using the hands-free phone system (for cellular phone)
SIENNA_OM_OM45483U_(U)
■Automatic adjustment of volume
When vehicle speed is 50 mph (80 km/h) or more, the volume automatically
increases. The volume returns to the previous volume setting when vehicle
speed drops to 43 mph (70 km/h) or less.
■ When using a voice command
●For numbers, say a combination of single digits from zero to nine, #
(pound), (star), and + (plus).
● Say a command correctly and clearly.
■ The system may not recognize your voice in the following situations:
● When driving on a rough road
● When driving at high speeds
● When air is blowing out of the vents onto the microphone
● When the air conditioning fan emits a loud noise
■ The following cannot be performed while driving:
●Operating the system with
● Registering a cellular phone to the system
■ Changing the passkey
P. 568
Page 647 of 872
Maintenance and care4
647
SIENNA_OM_OM45483U_(U)
4-1. Maintenance and careCleaning and protecting the vehicle exterior ......... 648
Cleaning and protecting the vehicle interior .......... 653
4-2. Maintenance Maintenance requirements .................. 657
General maintenance....... 660
Emission inspection and maintenance (I/M)
programs........................ 664
4-3. Do-it-yourself maintenance Do-it-yourself service precautions .................... 665
Hood ................................ 669
Positioning a floor jack ..... 671
Engine compartment ........ 673
Tires ................................. 688
Tire inflation pressure ...... 699
Wheels ............................. 703
Air conditioning filter......... 706
Wireless remote control/ electronic key battery ..... 708
Checking and replacing fuses .............................. 711
Light bulbs........................ 724