
8
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For your infor mation
Please note that this manual applies to all models and explains all equipment,
including  options.  Therefore,  you  may  find  some  explanations  for  equipment
not installed on your vehicle. 
All  specifications  provided  in  this  manual  are  current  at  the  time  of  printing.
However, because of the Toyota policy of continual product improvement, we
reserve the right to make changes at any time without notice.
Depending on specifications, the vehicle shown in the illustrations may differ
from your vehicle in terms of equipment.
Approximately  five  hours  after  the  engine  is  turned  off,  you  may  hear  sound
coming from under the vehicle for several minutes. This is the sound of a fuel
evaporation leakage check and, it does not indicate a malfunction.
A  wide  variety  of  non-genuine  spare  parts  and  accessories  for  Toyota  vehi-
cles are currently available in the market. You should know that Toyota does
not  warrant  these  products  and  is  not  responsible  for  their  performance,
repair,  or  replacement,  or  for  any  damage  they  may  cause  to,  or  adverse
effect they may have on, your Toyota vehicle.
This vehicle should not be modified with non-genuine Toyota products. Modi-
fication with non-genuine Toyota products could affect its performance, safety
or  durability,  and  may  even  violate  governmental  regulations.  In  addition,
damage or performance problems resulting from the modification may not be
covered under warranty.
Main Owner’s Manual
Noise from under vehicle after turning off the engine
Accessories, spare parts and modification of your Toyota 

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9
The installation of a mobile two-way radio system in your vehicle could affect
electronic systems such as:
●Multiport fuel injection system/sequential multiport fuel injection system
● Cruise control system
● Anti-lock brake system
● SRS airbag system
● Seat belt pretensioner system
Be sure to check with your Toyota dealer for precautionary measures or spe-
cial instructions regarding installation of a mobile two-way radio system.
Your Toyota is equipped with several sophisticated computers that will record
certain data, such as: • Engine speed
• Accelerator status
• Brake status
• Vehicle speed
• Shift position
The  recorded  data  varies  according  to  the  vehicle  grade  level  and  options
with  which  it  is  equipped.  These  computers  do  not  record  conversations  or
sounds, and only record images outside of the vehicle in certain situations.
●Data Transmission
Your  vehicle  may  transmit  the  data  recorded  in  these  computers  to  Toyota
without notification to you.
●Data usage
Toyota may use the data recorded in these computers to diagnose malfunc-
tions, conduct research and development, and improve quality.
Toyota will not disclose the recorded data to a third party except:
• With the consent of the vehicle owner or with the consent of the lessee if the vehicle is leased
• In response to an official request by the police, a court of law or a govern- ment agency
• For use by Toyota in a lawsuit
• For  research  purposes where  the  data  is  not  tied  to a  specific vehicle  or vehicle owner
●Usage of data collected through Safety Connect (U.S. mainland only)
If  your  Toyota  has  Safety  Connect  and  if  you  have  subscribed  to  those  ser-
vices,  please  refer  to  the  Safety  Connect  Telematics  Subscription  Service
Agreement for information on data collected and its usage.
●To  learn  more  about  the  vehicle  data  collected,  used  and  shared  by  Toy-
ota, please visit www.toyota.com/privacyvts/
.
Installation of a mobile two-way radio system
Vehicle data recordings 

10
SIENNA_OM_OM08007U_(U)This  vehicle  is  equipped  with  an  event  data  recorder  (EDR).  The  main  pur-
pose  of  an  EDR  is  to  record,  in  certain  crash  or  near  crash-like  situations,
such as an air bag deployment or hitting a road obstacle, data that will assist
in understanding how a vehicle’s systems performed. The EDR is designed to
record data related to vehicle dynamics and safety systems for a short period
of time, typically 30 seconds or less.
The EDR in this vehicle is designed to record such data as:
• How various systems in your vehicle were operating;
• Whether  or  not  the  driver  and  passenger  safety  belts  were  buckled/fas- tened;
• How far (if at all) the driver was depressing the accelerator and/or brake pedal; and,
• How fast the vehicle was traveling.
These  data  can  help  provide  a  better  understanding  of  the  circumstances  in
which crashes and injuries occur.
NOTE: EDR data are recorded by your vehicle only if a nontrivial crash situa-
tion occurs; no data are recorded by the EDR under normal driving conditions
and  no  personal  data  (e.g.,  name,  gender,  age,  and  crash  location)  are
recorded.  However,  other  parties,  such  as  law  enforcement,  could  combine
the  EDR  data  with  the  type  of  personally  identifying  data  routinely  acquired
during a crash investigation. 
To read data recorded by an EDR, special equipment is required, and access
to the vehicle or the EDR is needed.  In  addition to the vehicle manufacturer,
other parties, such as law enforcement, that have the special equipment, can
read the information if they have access to the vehicle or the EDR.
●Disclosure of the EDR data
Toyota will not disclose the data recorded in an EDR to a third party except
when:
• An  agreement  from  the  vehicle’s  owner  (or  the  lessee  for  a  leased  vehi- cle) is obtained
• In response to an official request by the police, a court of law or a govern- ment agency
• For use by Toyota in a lawsuit
However, if necessary, Toyota may:
• Use the data for research on vehicle safety performance
• Disclose the data to a third party for research purposes without disclosing information about the specific vehicle or vehicle owner
Event data recorder 

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For safety and security
WARNING
Observe the following precautions. 
Failure  to  do  so  may  cause  the  driver’s  floor  mat  to  slip,  possibly  interfering
with the pedals while driving. An unexpectedly high speed may result or it may
become difficult to stop the vehicle. This could lead to an accident, resulting in
death or serious injury.
■When installing the driver’s floor mat 
●Do  not  use  floor  mats  designed  for  other  models  or  different  model  year
vehicles, even if they are Toyota Genuine floor mats.
● Only use floor mats designed for the driver’s seat.
● Always  install  the floor  mat  securely  using  the retaining  hooks (clips)  pro-
vided.
● Do not use two or more floor mats on top of each other.
● Do not place the floor mat bottom-side up or upside-down.
■ Before driving
●Check  that  the  floor  mat  is  securely
fixed  in  the  correct  place  with  all  the
provided  retaining  hooks  (clips).  Be
especially  careful  to  perform  this  check
after cleaning the floor.
● With  the  engine  stopped  and  the  shift
lever  in  P,  fully  depress  each  pedal  to
the  floor  to  make  sure  it  does  not  inter-
fere with the floor mat. 

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For safety and security
Your vehicle is equipped with ADVANCED AIRBAGS designed based
on  the  US  motor  vehicle  safety  standards  (FMVSS208).  The  airbag
sensor  assembly  (ECU)  controls  airbag  deployment  based  on  infor-
mation  obtained  from  the  sensors  et c.  shown  in  the  system  compo-
nents  diagram  above.  This  informat ion  includes  crash  severity  and
occupant  information.  As  the  airbags  deploy,  a  chemical  reaction  in
the inflators quickly fills the airbag s with non-toxic gas to help restrain
the motion of the occupants.
WARNING
■ SRS airbag precautions
Observe the following precautions regarding the SRS airbags. 
Failure to do so may cause death or serious injury.
●The  driver  and  all  passengers  in  the  vehicle  must  wear  their  seat  belts
properly.
The SRS airbags are supplemental devices to be used with the seat belts.
● The  SRS  driver  airbag  deploys  with  considerable  force,  and  can  cause
death  or  serious  injury  especially  if  the  driver  is  very  close  to  the  airbag.
The National Highway Traffic Safety Administration (NHTSA) advises:
Since the risk zone for the driver’s airbag is the first 2 - 3 in. (50 - 75 mm)
of  inflation,  placing  yourself  10  in.  (250  mm)  from  your driver  airbag  pro-
vides  you  with  a  clear  margin  of  safety.  This  distance  is  measured  from
the center of the steering wheel to your breastbone. If you sit less than 10
in.  (250  mm)  away  now,  you  can  change  your  driving  position  in  several
ways:
• Move your seat to the rear as far as you can while still reaching the ped- als comfortably.
• Slightly recline the back of the seat. 
Although vehicle designs vary, many drivers can achieve the 10 in. (250
mm)  distance,  even  with  the  driver  seat  all  the  way  forward,  simply  by
reclining  the  back  of  the  seat  somewhat.  If  reclining  the  back  of  your
seat makes it hard to see the road, raise yourself by using a firm, non-
slippery cushion, or raise the seat if your vehicle has that feature.
• If your steering wheel is adjustable, tilt it downward. This points the air-
bag toward your chest instead of your head and neck.
The  seat  should  be  adjusted  as  recommended  by  NHTSA  above,  while
still  maintaining  control  of  the  foot  pedals,  steering  wheel,  and  your  view
of the instrument panel controls. 

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WARNING
■SRS airbag precautions
●The SRS front passenger airbag also deploys with considerable force, and
can  cause death or serious  injury especially  if the  front  passenger is very
close to the airbag. The front passenger  seat should be as far from the air-
bag  as  possible  with  the  seatback  adjusted,  so  the  front  passenger  sits
upright.
● Improperly  seated  and/or  restrained  infants  and  children  can  be  killed  or
seriously injured by a deploying airbag. An infant or child who is too small
to  use  a  seat  belt  should  be  properly  secured  using  a  child  restraint  sys-
tem. Toyota strongly recommends that all infants and children be placed in
the  rear  seats  of  the  vehicle  and  proper ly  restrained.  The  rear  seats  are
safer for infants and children than the front passenger seat. ( P. 56)
●If  the  seat  belt  extender  has  been  con-
nected to the front seat belt buckles but
the seat belt extender has not also been
fastened  to  the  latch  plate  of  the  seat
belt,  the  SRS  front  airbags  will  judge
that  the  driver  and  front  passenger  are
wearing  the  seat  belt  even  though  the
seat  belt  has  not  been  connected.  In
this  case,  the  SRS  front  airbags  may
not  activate  correctly  in  a  collision,
resulting in death or serious injury in the
event of a collision. Be sure to wear the
seat belt with the seat belt extender. 

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For safety and security
■If the SRS airbags deploy (inflate)
●Slight  abrasions,  burns,  bruising  etc.,  may  be  sustained  from  SRS  airbags,
due to the extremely high speed deployment (inflation) by hot gases.
● Bruising  and  slight  abrasions  may  result  from  contact  with  a  deploying
(inflating) SRS airbag.
● A loud noise and white powder will be emitted.
● Parts of the airbag module (steering wheel hub, airbag cover and inflator) as
well  as  the  front  seats,  parts  of  the  front  and  rear  pillars,  and  roof  side  rail,
may be hot for several minutes. The airbag itself may also be hot.
● The windshield may crack.
● For Safety Connect subscribers, if the SRS airbags deploy or in the event of
a  severe  rear-end  collision,  the  system  is  designed  to  send  an  emergency
call  to  the  response  center,  notifying  them  of  the  vehicle’s  location  (without
needing  to  push  the  “SOS”  button)  and  an  agent  will  attempt  to  speak  with
the occupants to ascertain the level of emergency and assistance required.
If the  occupants  are  unable to  communicate,  the agent  automatically treats
the  call  as  an  emergency  and  helps  to  dispatch  the  necessary  emergency
services. ( P. 461)
■ SRS airbag deployment conditions (SRS front airbags)
●The SRS front airbags will deploy in the event of an impact that exceeds the
set threshold level (the level of force corresponding to an approximately 12 -
18 mph [20 - 30 km/h] frontal collision with a fixed wall that does not move or
deform).
However,  this  threshold  velocity  will  be  considerably  higher  in  the  following
situations: • If  the  vehicle  strikes  an  object,  such  as  a  parked  vehicle  or  sign  pole, which can move or deform on impact
• If  the  vehicle  is  involved  in  an  underride  collision,  such  as  a  collision  in which  the  front  of  the  vehicle  “underrides”,  or  goes  under,  the  bed  of  a
truck
● Depending on the type of collision, it is possible that only the seat belt pre-
tensioners will activate.
● The SRS front airbags for the front pass enger will not activate if there is no
passenger  sitting  in  the  front  passenger  seat.  However,  the  SRS  front  air-
bags for the front passenger may deploy if luggage is put in the seat, even if
the seat is unoccupied. ( P. 50)
● The SRS seat cushion airbag on the front passenger’s seat will not operate
if the occupant is not wearing a seat belt. 

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SRS airbag deployment conditions (SRS  side and curtain shield airbags)
● The  SRS  side  and  curtain  shield  airbags  will  deploy  in  the  event  of  an
impact that exceeds the set threshold level (the level of force corresponding
to the impact force produced by an approximately 3300 lb. [1500 kg] vehicle
colliding with the vehicle cabin from a direction perpendicular to the vehicle
orientation at an approximate speed of 12 - 18 mph [20 - 30 km/h]).
● The SRS curtain shield airbags will deploy in the event of vehicle rollover.
● The  SRS  side  and  curtain  shield  airbags  may  also  deploy  in  the  event  of  a
severe frontal collision.
■ Conditions under which the SRS airbags may deploy (inflate), other than
a collision
The  SRS  front  airbags  and  SRS  side  and  curtain  shield  airbags  may  also
deploy  if  a  serious  impact  occurs  to  the  underside  of  your  vehicle.  Some
examples are shown in the illustration.
The  SRS  curtain  shield  airbags  may  also  deploy  under  the  situations  shown
in the illustration. ●Hitting a curb, edge of pavement or hard
surface
● Falling into or jumping over a deep hole
● Landing hard or falling
● The angle of vehicle tip-up is marginal.
● The vehicle skids and hits a curb stone.