
TABLE OF CONTENTS2
SIENNA_OM_OM08007U_(U)For your information....................... 8
Reading this manual .................... 12
How to search .............................. 13
Pictorial index .............................. 14
1-1. For safe use
Before driving ...................... 24
For safety drive ................... 26
Seat belts ............................ 28
SRS airbags ........................ 36
Front passenger occupant classification system ......... 50
Safety information  for children ........................ 55
Child restraint systems ........ 56
Installing child restraints ...... 60
Exhaust gas precautions ..... 74
1-2. Theft deterrent system Engine immobilizer system............................... 75
Alarm ................................... 77 2. Instrument cluster
Warning 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
3-1. Key information Keys................................... 104
3-2. Opening, closing and  locking the doors
Front doors ........................ 110
Sliding doors ...................... 121
Back door .......................... 133
Smart key system .............. 143
3-3. Adjusting the seats Front seats......................... 149
Rear seats ......................... 152
Driving position memory .... 169
Head restraints .................. 173
1For safety and security
2Instrument cluster
3Operation of each 
component 

23
SIENNA_OM_OM08007U_(U)
For safety and security1
1-1. For safe useBefore driving ...................... 24
For safety drive ................... 26
Seat belts ............................ 28
SRS airbags ........................ 36
Front passenger occupant classification system ......... 50
Safety information  for children ........................ 55
Child restraint systems........ 56
Installing child restraints...... 60
Exhaust gas precautions..... 74
1-2. Theft deterrent system Engine immobilizer system .............................. 75
Alarm................................... 77 

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. 

761-2. Theft deterrent system
SIENNA_OM_OM08007U_(U)
■System maintenance
The vehicle has a maintenance-free type engine immobilizer system.
■ Conditions that may cause the system to malfunction
●If the grip portion of the key is in contact with a metallic object
● If  the  key  is  in  close  proximity  to  or  touching  a  key  to  the  security  system
(key with a built-in transponder chip) of another vehicle
■ Certifications for the  engine immobilizer system
For vehicles sold in the U.S.A.
Vehicles without a smart key system 
FCC ID: WRKRI-34BTY
Vehicles with a smart key system
FCC ID: NI4TMIMB-1
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  interfer-
ence,  and  (2)  this  device  must  accept  any  interference  received,  including
interference that may cause undesired operation.
Changes or modifications not expressly approved by the party responsible for
compliance could void the user’s authority to operate the equipment.
For vehicles sold in Canada
This device complies with Industry Canada licence-exempt RSS standard(s).
Operation  is  subject  to  the  following  two  conditions:  (1)  this  device  may  not
cause  interference,  and  (2)  this device must accept any  interference, includ-
ing interference that may cause undesired operation of the device.
NOTICE
■ To ensure the system  operates correctly
Do  not  modify  or  remove  the  system.  If  modified  or  removed,  the  proper
operation of the system cannot be guaranteed. 

226
SIENNA_OM_OM08007U_(U)
4-2. Driving procedures
■Turning the key from  “ACC” to “LOCK”
Shift the shift lever to P. (P. 233)
■ If the engine does not start
The engine immobilizer system may not have been deactivated. ( P. 75)
Contact your Toyota dealer.
■ When the steering lock cannot be released
■ Key reminder function
A  buzzer  sounds  if  the  driver’s  door  is  opened  while  the  engine  switch  is  in
the “LOCK” or “ACC” position to remind you to remove the key.Push  in  the  key  and  turn  it  to  the
“LOCK” position.
When  starting  the  engine,  the  engine
switch  may  seem  stuck  in  the  “LOCK”
position. To free it, turn the key while turn-
ing  the  steering  wheel  slightly  left  and
right.
WARNING
■ When starting the engine
Always start the engine while sitting in the driver’s seat. Do not depress the
accelerator pedal while starting the engine under any circumstances.
Doing so may cause an accident resulting in death or serious injury.
■ Caution when driving
Do not turn the engine switch to the “LOCK” position while driving. If, in an
emergency,  you  must  turn  the  engine  off  while  the  vehicle  is  moving,  turn
the engine switch only to the “ACC” position to stop the engine. An accident
may result if the engine is stopped while driving. ( P. 537)
1
2 

230
SIENNA_OM_OM08007U_(U)
4-2. Driving procedures
If  the engine  is stopped with the  shift lever in a  position other than P,
the  engine  switch  will  not  be  turned  off  but  instead  be  turned  to
ACCESSORY  mode.  Perform  the  following  procedure  to  turn  the
switch off:
Check that the parking brake is set.
Shift the shift lever to P.
Check  that  the  indicator  on  th e  engine  switch  is  illuminated  in
amber and then press the engine switch once.
Check that the indicator on  the engine switch is off.
■Auto power off function
If  the  vehicle  is  left  in  ACCESSORY  mode  for  more  than  20  minutes  or
IGNITION  ON  mode  (the  engine  is  not  running)  for  more  than  an  hour  with
the shift lever in P, the engine switch will automatically turn off. However, this
function  cannot  entirely  prevent  battery  discharge.  Do  not  leave  the  vehicle
with the engine switch in ACCESSORY  or IGNITION ON mode for long peri-
ods of time when the engine is not running.
■ Electronic key battery depletion
P. 107
■ Conditions affecting operation
P.   1 1 9
■ Note for the entry function
P. 145
■ If the engine does not start
The engine immobilizer system may not have been deactivated. ( P. 75)
Contact your Toyota dealer.
When stopping the engine with the  shift lever in a position other
than P
1
2
3
4 

586
SIENNA_OM_OM08007U_(U)
8-2. Steps to take in an emergency
If the engine will not start
One of the following may be the cause of the problem:
●There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle.
● The engine may be flooded.
Try to restart the engine again following correct starting procedures.
( P. 225, 228)
● There may be a malfunction in the engine immobilizer system. 
( P. 75)
One of the following may be the cause of the problem:
● The battery may be discharged. ( P. 590)
● The battery terminal connections may be loose or corroded.
The engine starting system may be  malfunctioning due to an electrical
problem  such  as  an  electronic  key  battery  depletion  or  a  blown  fuse.
However, an interim measure is available to start the engine. 
(  P. 587)
If the engine will not start even though correct starting proce-
dures are being followed ( P. 225, 228), consider each of the fol-
lowing points:
The engine will not start even  though the starter motor operates
normally.
The starter motor turns over slowly, the interior lights and head-
lights are dim, or the horn does not sound or sounds at a low
volume.
The starter motor does not turn over (vehicles with a smart key
system) 

659Alphabetical index
SIENNA_OM_OM08007U_(U)
Emergency, in case ofIf a warning buzzer 
sounds ................................ 545
If a warning light turns on...... 545
If a warning message is  displayed ............................ 554
If the battery is discharged.... 590
If the electronic key does  not operate properly ........... 588
If the engine will not start ...... 586
If you have a flat tire  .... 570, 572
If you lose your keys ............. 107
If you think something is  wrong.................................. 543
If your vehicle becomes  stuck ................................... 597
If your vehicle has to be 
stopped in an emergency ... 537
If your vehicle needs to be  towed .................................. 539
If your vehicle overheats ....... 594
Engine “ACC” position ...................... 225
Accessory mode ................... 229
Compartment ........................ 486
Engine switch................ 225, 228
Hood ..................................... 483
How to start the 
engine......................... 225, 228
Identification number ............ 601
If the engine will not start ...... 586
Ignition switch  (engine switch) ........... 225, 228
Overheating .......................... 594 Engine coolant
Capacity................................ 604
Checking............................... 489
Preparing and checking before winter ...................... 317
Engine coolant temperature  gauge ....................................... 88
Engine immobilizer system ...... 75
Engine oil
Capacity................................ 602
Checking............................... 487
Oil pressure warning light ..... 545
Oil pressure warning message............................. 561
Preparing and checking  before winter ...................... 317
Engine switch .................. 225, 228
EPS (Electronic Power Steering)
Function ................................ 297
Warning light......................... 546
Warning message................. 557
Event data recorder (EDR)........ 10
*: Refer to “NAVIGATION AND MULTIMEDIA
SYSTEM OWNER’S MANUAL”