
451-1. For safe use
SIENNA_OM_OM08013U_(U)
1
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. 457)
■ 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. 

256
SIENNA_OM_OM08013U_(U)
4-4. Refueling
Opening the fuel tank cap
●Close all the doors and windows, and turn the engine switch to the
“LOCK” position (vehicles without a smart key system) or off (vehi-
cles with a smart key system).
● Confirm the type of fuel.
■Fuel type
P. 607
■ Fuel tank opening for unleaded gasoline
To  help  prevent  incorrect  fueling,  your  vehicle  has  a  fuel  tank  opening  that
only accommodates the special nozzle on unleaded fuel pumps.
Perform the following steps  to open the fuel tank cap:
Before refueling the vehicle
WARNING
■When refueling the vehicle
Observe the following precautions while refueling the vehicle. Failure to do
so may result in death or serious injury.
●After  exiting  the  vehicle  and  before  opening  the  fuel  door,  touch  an
unpainted metal surface to discharge any static electricity. It is important to
discharge  static  electricity  before  refueling  because  sparks  resulting  from
static electricity can cause fuel vapors to ignite while refueling.
● Always hold the grips on the fuel tank cap and turn it slowly to remove it. 
A  whooshing  sound  may  be  heard  when  the  fuel  tank  cap  is  loosened.
Wait until the sound cannot be heard before fully removing the cap.
In hot weather, pressurized fuel may spray out of the filler neck and cause
injury.
● Do  not  allow  anyone  that  has  not  discharged  static  electricity  from  their
body to come close to an open fuel tank.
● Do not inhale vaporized fuel.
Fuel contains substances that are harmful if inhaled.
● Do not smoke while refueling the vehicle.
Doing so may cause the fuel to ignite and cause a fire.
● Do not return to the vehicle or touch any person or object that is statically
charged.
This may cause static electricity to build up, resulting in a possible ignition
hazard. 

468
SIENNA_OM_OM08013U_(U)
7-1. Maintenance and care
WARNING
■Water in the vehicle
●Do not splash or spill liquid in the vehicle.
Doing  so  may  cause  electrical  components  etc.  to  malfunction  or  catch
fire.
● Do not get any of the SRS components or wiring in the vehicle interior wet. 
( P. 38)
An electrical malfunction may cause the airbags to deploy or not function
properly, resulting in death or serious injury.
■ Cleaning the interior (especially instrument panel)
Do  not  use  polish  wax  or  polish  cleaner.  The  instrument  panel  may  reflect
off the windshield, obstructing the driver’s view and leading to an accident,
resulting in death or serious injury.
NOTICE
■Cleaning detergents
●Do not use the following types of detergent, as they may discolor the vehi-
cle interior or cause streaks or damage to painted surfaces:
• Non-seat  portions:  Organic  substances  such  as  benzene  or  gasoline,
alkaline or acidic solutions, dye, and bleach
• Seats: Alkaline or acidic solutions, such as thinner, benzene, and alco- hol
● Do  not  use  polish  wax  or  polish  cleaner.  The  instrument  panel’s  or  other
interior part’s painted surface may be damaged.
■ Preventing damage to leather surfaces
Observe  the  following  precautions  to  avoid  damage  to  and  deterioration  of
leather surfaces.
●Remove any dust or dirt from leather surfaces immediately.
● Do  not  expose  the  vehicle  to  direct  sunlight  for  extended  periods  of  time.
Park the vehicle in the shade, especially during summer.
● Do not place items made of vinyl, plastic, or containing wax on the uphol-
stery,  as  they  may  stick  to  the  leather  surface  if  the  vehicle  interior  heats
up significantly. 

600
SIENNA_OM_OM08013U_(U)
9-1. Specifications
*: The engine  oil capacity  is  a reference  quantity to  be used  when changingthe engine oil. Warm up and turn off the engine, wait more than 5 minutes,
and check the oil level on the dipstick.
Engine
Model 3.5L 6-cylinder (2GR-FE)
Type 6-cylinder V type, 4-cycle, gasoline
Bore and stroke  3.70   3.27 in. (94.0   83.0 mm)
Displacement  210.9 cu.in. (3456 cm3)
Drive belt tension
Automatic adjustment
Valve clearance
Fuel
Fuel type Unleaded gasoline only
Octane rating87 (Research Octane Number 91) or higher
Fuel tank capacity 
(Reference) 20.9 gal. (79 L, 17.4 Imp.gal.)
Lubrication system
Oil capacity 
(Drain and refill 
 reference
*)
Without filter
With filter 6.0 qt. (5.7 L, 5.0 Imp.qt.)
6.4 qt. (6.1 L, 5.4 Imp.qt.) 

SIENNA_OM_OM08013U_(U)
6099-1. Specifications
9
Vehicle specifications
NOTICE
■Notice on fuel quality
●Do  not  use  improper  fuels.  If  improper  fuels  are  used,  the  engine  will  be
damaged.
● Do not use leaded gasoline.
Leaded gasoline  can cause damage to your vehicle’s catalytic converters
causing the emission control system to malfunction.
● Do not use gasohol other than that stated here.
Other  gasohol  may  cause  fuel  system  damage  or  vehicle  performance
problems.
● Using  unleaded  gasoline  with  an  octane  number  or  rating  lower  than  the
level previously stated will cause persistent heavy knocking.
At worst, this will lead to engine damage.
■ Fuel-related poor driveability
If poor driveability (poor hot starting, vaporization, engine knocking, etc.) is
encountered  after  using  a  different  type  of  fuel,  discontinue  the  use  of  that
type of fuel.
■ When refueling with gasohol
Take care not to spill gasohol. It can damage your vehicle’s paint. 

658Alphabetical index
SIENNA_OM_OM08013U_(U)
Flat tire.............................. 566, 568
Floor mats .................................. 24
FluidAutomatic transaxle .............. 603
Brake .................................... 487
Transfer ................................ 603
Washer ................................. 491
Fog lights
Light switch ........................... 249
Replacing light bulbs............. 519
Wattage ................................ 606
Front automatic air  conditioning system ............. 408
Front doors .............................. 110
Front passenger occupant 
classification system .............. 50
Front seats ............................... 149
Adjustment ............................ 149
Cleaning................................ 467
Correct driving posture ........... 26
Driver’s seat position memory .............................. 169
Head restraints ..................... 173
Power easy access 
system ......... ....................... 169
Seat heaters ......................... 420
Seat position memory ........... 169
Front side marker lights Light switch ........................... 239
Replacing light bulbs..... 521, 523
Wattage ................................ 606
Front turn signal lights Replacing light bulbs..... 521, 522
Turn signal lever ................... 237
Wattage ................................ 606 Fuel
Capacity................................ 600
Fuel gauge.............................. 88
Fuel pump shut off system ... 540
Gas station information......... 668
Information............................ 607
Refueling .............................. 256
Type...................................... 600
Warning light......................... 543
Warning message................. 559
Fuel consumption 
information ............................ 100
Fuel filler door ......................... 256 Refueling .............................. 256
Fuel pump shut off system..... 540
Fuses ........................................ 510
Garage door opener ................ 448
Gauges ....................................... 87
Glove box ................................. 427
Grocery bag hooks.................. 447
F
G 

668
SIENNA_OM_OM08013U_(U)
GAS STATION INFORMATION
Auxiliary catch leverFuel filler door
P. 479 P. 257
Hood lock release 
leverFuel filler door openerTire inflation pressure
P. 479 P. 257P. 604
Fuel tank capacity 
(Reference)20.9 gal. (79 L, 17.4 Imp.gal.)
Fuel typeUnleaded gasoline with an Octane Rating of 87
(Research Octane Number 91) or higher
Cold tire inflation 
pressure
P.   6 0 4
Engine oil capacity
(Drain and refill — 
reference)qt. (L, Imp.qt.)
Without filter 6.0 (5.7, 5.0)
With filter 6.4 (6.1, 5.4)
Engine oil type “Toyota Genuine Motor Oil” or equivalent
Oil grade: ILSAC GF-5 multigrade engine oil
Recommended oil viscosity: SAE 0W-20
P.   6 0 1