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3-2. Opening, closing and locking the doors
■When all the doors are locked with  the wireless remote control or key
The doors cannot be unlocked with the door lock switch. 
The door lock switch can be reset by unlocking all the doors with the wireless
remote control or key.
■ Using the mechanical key (vehicles with a smart key system)
The doors can also be locked and unlocked with the mechanical key. 
( P. 588)
■ Conditions affecting the operation of  the smart key system or wireless
remote control
Vehicles without a smart key system
The wireless remote control  function may  not operate  normally  in  the follow-
ing situations:
● Near  a  TV  tower,  radio  station,  electric  power  plant,  airport  or  other  facility
that generates strong radio waves
● When  carrying  a  portable  radio,  cellular  phone  or  other  wireless  communi-
cation devices
● When multiple wireless keys are in the vicinity
● When the wireless key is in contact with, or is covered by, a metallic object
● When a wireless key (that emits radio waves) is being used nearby
● When the wireless key has been left near an electrical appliance such as a
personal computer
● If  window  tint  with  a  metallic  content  or  metallic  objects  is  attached  to  the
rear window
● Vehicles  with  AUTO  ACCESS  SEAT:  If  the  wireless  remote  control  of  the
AUTO  ACCESS  SEAT  is  operated  simultaneously,  the  AUTO  ACCESS
SEAT may not operate properly. 
For details, refer to “AUTO A CCESS SEAT OWNER’S MANUAL”. 
     
        
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SIENNA_OM_OM08007U_(U)
1193-2. Opening, closing and locking the doors
3
Operation of each component
Vehicles with a smart key system
The smart key system uses weak radio waves. In the following situations, the
communication  between  the  electronic  key  and  the  vehicle  may  be  affected,
preventing the smart key system and wireless remote control from operating
properly. (Way of coping  P. 588)
● When the electronic key battery is depleted
● Near  a  TV  tower,  electric  power  plant,  gas  station,  radio  station,  large  dis-
play,  airport  or  other  facility  that  generates  strong  radio  waves  or  electrical
noise
● When  carrying  a  portable  radio,  cellular  phone,  cordless  phone  or  other
wireless communication devices
● When  the  electronic  key  is  in  contact  with,  or  is  covered  by  the  following
objects
• Cards to which aluminum foil is attached
• Cigarette boxes that have aluminum foil inside
• Metallic wallets or bags
• Coins
• Hand warmers made of metal
• Media such as CDs and DVDs
● When multiple electronic keys are in the vicinity
● When another wireless key (that emits radio waves) is being used nearby
● When  carrying  or  using  the  electronic  key  together  with  the  following
devices that emit radio waves
• Another vehicle’s electronic key
• A wireless key that emits radio waves
• Personal computers or personal digital assistants (PDAs)
• Digital audio players
• Portable game systems
● If  window  tint  with  a  metallic  content  or  metallic  objects  are  attached  to  the
rear window
● Vehicles  with  AUTO  ACCESS  SEAT:  If  the  wireless  remote  control  of  the
AUTO  ACCESS  SEAT  is  operated  simultaneously,  the  AUTO  ACCESS
SEAT may not operate properly. 
For details, refer to “AUTO A CCESS SEAT OWNER’S MANUAL”.
■ Customization
Settings (e.g. unlocking function using a key) can be changed. 
(Customizable features:  P. 628) 
     
        
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SIENNA_OM_OM08007U_(U)
5-1. Basic Operations
5
Audio system
Steering wheel audio switches
Vo l u m e   s w i t c h• Increases/decreases volume
• Press and hold: Continuously increases/decreases volume
Cursor switch (“ ” and “ ”)
• Selects  (radio  stations/radio presets/tracks/files/songs)
• Press  and  hold:  Fast  up/ down (radio stations)
• Fast up/down (tracks/files)
Cursor switch (“ ” and “”)
• Seek up/down (radio station)
• Press and hold: Continuously  seek up/down (radio station)
• Press and hold: Fast forwar d/rewind (tracks/files/songs)
“MODE/HOLD” switch • Changes audio source
• Press and hold this switch to mute or pause the current operation To cancel the mute or pause, press and hold.
Back switch • Returns  to  the  previous  scr een  (Only  when  the  back  button  is
displayed)
Enter switch • Displays the preset/list screen
• Selects items
Some audio features can be c ontrolled using the switches on
the steering wheel.
Operation may differ depending  on the type of audio system or
navigation system. For details,  refer to the manual provided with
the audio system or navigation system.
Operating the audio system using the steering wheel switches
1
2
3
4
5 
     
        
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SIENNA_OM_OM08007U_(U)
5-4. Using the radio
Radio operation
Pressing  the  “AUDIO”  button  displays  the  audio  control  screen  from
any screens of the selected source.
Audio  source  selection  screen
appears
Preset stations
Select  to  display  RBDS  text
messages
*
Scanning for receivable station
Select to display a list of receiv-
able stations
Setting the sound ( P. 339)
*:FM only
Tune in to the desired station using one of the following methods.
■Seek tuning
Press the “ ” or “” button on “SEEK•TRACK”.
The radio will begin seeking up or  down for a station of the nearest
frequency and will stop when a station is found.
■Manual tuning
Turn the “TUNE•SCROLL” knob.
■Preset stations
Select the desired preset station.
Select “AM” or “FM” on the audio source selection screen to
begin listening to the radio.
Audio control screen
1
2
3
4
5
6
Selecting a station