Page 156 of 876
156 1-5. Refueling
SIENNA_OM_OM45472U_(U)
Closing the fuel tank capAfter refueling, turn the fuel tank
cap until you hear a click. Once
the cap is released, it will turn
slightly in the opposite direction.
Hang the fuel tank cap on the
back of the fuel filler door.STEP3
■Fuel type
Use unleaded gasoline (Octane rating 87 [Research Octane Number 91] or
higher)
■ Fuel tank capacity (reference)
20.9 gal. (79 L, 17.4 Imp.gal.)
Page 653 of 876

653
4-1. Maintenance and care
4
Maintenance and care
SIENNA_OM_OM45472U_(U)
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 alcohol
● 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 o\
f
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.
Page 803 of 876
803
6-1. Specifications
6
Vehicle specifications
SIENNA_OM_OM45472U_(U)
Engine
Fuel
Model
1AR-FE, 2GR-FE
Type
1AR-FE engine
2GR-FE engine 4-cylinder in line, 4-cycle, gasoline
6-cylinder V type, 4-cycle, gasoline
Bore and stroke
1AR-FE engine
2GR-FE engine 3.54
4.13 in. (90.0 105.0 mm)
3.70 3.27 in. (94.0 83.0 mm)
Displacement
1AR-FE engine
2GR-FE engine 163.1 cu.in. (2672 cm3)
210.9 cu.in. (3456 cm3)
Drive belt tension Automatic adjustment
Valve clearance
Fuel typeUnleaded gasoline only
Octane rating87 (Research Octane Number 91) or higher
Fuel tank capacity
(Reference) 20.9 gal. (79 L, 17.4 Imp.gal.)
Page 814 of 876

814 6-1. Specifications
SIENNA_OM_OM45472U_(U)
■Recommendation of the use of gaso line containing detergent additives
● Toyota recommends the use of gasoline that contains detergent additives
to avoid build-up of engine deposits.
● All gasoline sold in the U.S.A. contains minimum detergent additives to
clean and/or keep clean intake systems, EPA’s lowest additives concen-
tration program.
● Toyota strongly recommends the use of Top Tier Detergent Gasoline. For
more information on Top Tier Detergent Gasoline and a list of marketers,
please go to the official website www.toptiergas.com.
■ Recommendation of the use of cleaner burning gasoline
Cleaner burning gasoline, including reformulated gasoline that contains oxy-
genates such as ethanol or MTBE (Methyl Tertiary Butyl Ether) is available in
many areas.
Toyota recommends the use of cleaner burning gasoline and appropriately
blended reformulated gasoline. These types of gasoline provide excellent
vehicle performance, reduce vehicle emissions and improve air quality.
■ Non-recommendation of the use of blended gasoline
● If you use gasohol in your vehicle, be sure that it has an octane rating no
lower than 87.
● Toyota does not recommend the use of gasoline containing methanol.
●Use only gasoline containing a maxi-
mum of 10% ethanol.
DO NOT use any flex-fuel or gasoline
that could contain more than 10% etha-
nol, including from any pump labeled
E15, E30, E50, E85 (which are only
some examples of fuel containing more
than 10% ethanol).DO NOT use gasoline
containing more than
10% ethanol.
(15% ethanol)
(50% ethanol)
(85% ethanol)
Page 816 of 876
816 6-1. Specifications
SIENNA_OM_OM45472U_(U)
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 p oor driveability
If poor driveability is encountered after using a different type of fuel (poor hot
starting, vaporization, engine knocking, etc.), 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.
Page 864 of 876

864 Alphabetical index
SIENNA_OM_OM45472U_(U)
Floor mat...................................620
FluidBrake .....................................681
Washer .................................. 687
Fog lights Replacing light bulbs ............. 725
Switch.................................... 282
Wattage .................................812
Front fog lights
Replacing light bulbs ............. 725
Switch.................................... 282
Wattage .................................812
Front passenger occupant classification system ............183
Front passenger’s seat belt
reminder light.........................749
Front seats Adjustment .............................. 95
Driver’s seat position
memory ............................... 120
Front side marker lights Replacing light bulbs ............. 725
Switch.................................... 268
Wattage .................................812
Front turn signal lights
Replacing light bulbs ............. 725
Switch.................................... 241
Wattage .................................812
Fuel Capacity ................................803
Fuel gauge ............................ 244
Fuel pump shut off system ....744
Gas station information .........876
Information ............................ 813
Refueling ............................... 155
Type ......................................803
Fuel door...................................155
Fuel filler door .......................... 155
Fuel pump shut off system ..... 744
Fuses......................................... 712 Garage door opener ................ 624
Gauges...................................... 244
Glove box ................................. 587
Grocery bag hooks .................. 618
Hands-free system
(for cellular phone) ................ 543
Head restraints
Adjusting .............................. 125
Headlights Manual headlight leveling
dial ...................................... 271
Replacing light bulbs ............. 725
Switch ................................... 268
Wattage................................. 812
Heaters Seat heaters.......................... 612
Side mirror ............................ 419
Hill-start assist control ............ 335
Hood.......................................... 667
Hooks Cargo .................................... 622
Grocery bag .......................... 618
Horn .......................................... 243FG
H
Page 876 of 876
876
SIENNA_OM_OM45472U_(U)
GAS STATION INFORMATION
Auxiliary catch leverP. 667Fuel filler doorP. 155
Hood release lever P. 6 6 7Fuel filler door opener P. 1 5 5Tire inflation pressure
P. 810
Back door openerP. 8 2
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)
Cold tire inflation
pressure
P. 8 1 0
Engine oil capacity
(Drain and refill
reference)qt. (L, Imp.qt.)
1AR-FE engine 2GR-FE engine
Without filter 4.2 (4.0 , 3.5) 6.0 (5.7, 5.0)
With filter 4.6 (4.4, 3.9) 6.4 (6.1, 5.4)
Engine oil type Toyota Genuine Motor Oil or equivalent
Oil grade P. 804
1AR-FE engine:
ILSAC multigrade engine oil
2GR-FE engine:
ILSAC GF-5 multigrade engine oil
Recommended oil viscosity:
0W-20