Page 157 of 872
157
1-5. Refueling
1
Before driving
SIENNA_OM_OM45483U_(U)
Closing the fuel tank cap
After 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 655 of 872

655
4-1. Maintenance and care
4
Maintenance and care
SIENNA_OM_OM45483U_(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 800 of 872
800 6-1. Specifications
SIENNA_OM_OM45483U_(U)■
Engine number
The engine number is stamped on the engine bl ock as shown.
Engine
Fuel
Model3.5L 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 typeUnleaded gasoline only
Octane rating 87 (Research Octane Number 91) or higher
Fuel tank capacity
(Reference) 20.9 gal. (79 L, 17.4 Imp.gal.)
Page 811 of 872

811
6-1. Specifications
6
Vehicle specifications
SIENNA_OM_OM45483U_(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.
Page 813 of 872
813
6-1. Specifications
6
Vehicle specifications
SIENNA_OM_OM45483U_(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 poor 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 860 of 872

860 Alphabetical index
SIENNA_OM_OM45483U_(U)
Floor mat................................... 622
FluidBrake ..................................... 681
Washer .................................. 687
Fog lights Replacing light bulbs ............. 724
Switch.................................... 284
Wattage ................................. 809
Front fog lights
Replacing light bulbs ............. 724
Switch.................................... 284
Wattage ................................. 809
Front passenger occupant classification system ............ 185
Front passenger’s seat belt
reminder light......................... 747
Front seats Adjustment ..............................95
Driver’s seat position
memory ............................... 121
Front side marker lights Replacing light bulbs ............. 724
Switch.................................... 270
Wattage ................................. 809
Front turn signal lights
Replacing light bulbs ............. 724
Switch.................................... 243
Wattage ................................. 809
Fuel Capacity ................................ 800
Fuel gauge ............................ 246
Fuel pump shut off system .... 742
Gas station information ......... 872
Information ............................ 810
Refueling ............................... 156
Type ...................................... 800
Fuel door................................... 156
Fuel filler door .......................... 156
Fuel pump shut off system ..... 742
Fuses......................................... 711 Garage door opener ................ 626
Gauges...................................... 246
Glove box ................................. 589
Grocery bag hooks .................. 620
Hands-free system
(for cellular phone) ................ 545
Head restraints
Adjusting .............................. 126
Headlights Manual headlight leveling
dial ...................................... 273
Replacing light bulbs ............. 724
Switch ................................... 270
Wattage................................. 809
Heaters Seat heaters.......................... 614
Side mirror ............................ 421
Hill-start assist control ............ 337
Hood.......................................... 669
Hooks Cargo .................................... 624
Grocery bag .......................... 620
Horn .......................................... 245FG
H
Page 872 of 872
872
SIENNA_OM_OM45483U_(U)
GAS STATION INFORMATION
Auxiliary catch leverP. 669Fuel filler doorP. 156
Hood release lever P. 6 6 9Fuel filler door opener P. 1 5 6Tire inflation pressure
P. 807
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 0 7
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: 0W-20
P. 8 0 1