2003 TOYOTA SIENNA gas type

03 SIENNA_U (L/O 0207)
2262003 MY SIENNA (OM45410U)
Drive gently and avoid high speeds.
Your vehicle does not need an elaborate
breakin. But following a few simple tips
for the first 1600 km (1000 miles) can add
to the future economy and long life of
your vehicle:
Avoid full throttle acceleration when
starting and driving.
Avoid racing the engine.
Try to avoid hard stops during the first
300 km (200 miles).
Do not drive for a long time at any
single speed, either fast or slow.
Do not tow a trailer during the first 800
km (500 miles).FUEL TYPE
Your new vehicle must use only un-
leaded gasoline.
To help prevent gas station mixups, your
Toyota has a smaller fuel tank opening.
The special nozzle on pumps with un-
leaded fuel will fit it, but the larger stan-
dard nozzle on pumps with leaded gas will
not.
At a minimum, the gasoline you use
should meet the specifications of ASTM
D4814 in the U.S.A. and CGSB 3.5M93
in Canada.NOTICE
Do not use leaded gasoline. Use of
leaded gasoline will cause the three
way catalytic converter to lose its ef-
fectiveness and the emission control
system to function improperly. Also,
this can increase maintenance costs.
OCTANE RATING
Select Octane Rating 87 (Research
Octane Number 91) or higher. For
improved vehicle performance, the use
of premium unleaded gasoline with an
Octane Rating of 91 (Research Octane
Number 96) or higher is recommended.
Use of unleaded gasoline with an octane
rating or research octane number lower
than stated above will cause persistent
heavy knocking. If it is severe, this will
lead to engine damage.
If your engine knocks...
If you detect heavy knocking even when
using the recommended fuel, or if you
hear steady knocking while holding a
steady speed on level roads, consult your
Toyota dealer.
However, now and then, you may notice
light knocking for a short time while accel-
erating or driving up hills. This is no need
of concern.
Breakin period
Fuel

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2272003 MY SIENNA (OM45410U)
GASOLINE CONTAINING DETERGENT
ADDITIVES
Toyota recommends the use of gasoline
that contains detergent additives to
avoid buildup of engine deposits.
However, all gasoline sold in the U.S.
contains detergent additives to keep clean
and/or clean intake systems.
QUALITY GASOLINE
Automotive manufacturers in the U.S.,
Europe and Japan have developed a
specification for quality fuel named
WorldWide Fuel Charter (WWFC) that
is expected to be applied world wide.
The WWFC consists of three categories
that depend on required emission lev-
els. In the U.S., category 3 has been
adopted. The WWFC improves air quali-
ty by providing for better emissions in
vehicle fleets, and customer satisfaction
through better vehicle performance.CLEANER BURNING GASOLINE
Cleaner burning gasoline, including re-
formulated gasoline that contains oxy-
genates such as ethanol or MTBE is
available in many areas.
Toyota recommends the use of cleaner
burning gasoline and appropriately blended
reformulated gasoline. These types of gas-
oline provide excellent vehicle perfor-
mance, reduce vehicle emissions, and im-
prove air quality.
OXYGENATES IN GASOLINE
Toyota allows the use of oxygenate
blended gasoline where the oxygenate
content is up to 10% ethanol or 15%
MTBE. If you use gasohol in your
Toyota, be sure that it has an octane
rating no lower than 87.
Toyota does not recommend the use of
gasoline containing methanol.
SULFUR IN GASOLINE
If your vehicle is certified to California
Emission Regulations, the vehicle is
designed to operate on California
cleaner burning gasoline (CBG) that
contains lower sulfur. If you cannot use
California CBG, your emission control
system may suffer damage and turn on
the Malfunction Indicator Lamp.
If the malfunction is caused by the type
of fuel used, repairs may not be covered
by your warranty.
GASOLINE CONTAINING MMT
Some gasoline contain an octane en-
hancing additive called MMT (Methylcy-
clopentadienyl Manganese Tricarbonyl).
Toyota does not recommend the use of
gasoline that contains MMT. If fuel con-
taining MMT is used, your emission con-
trol system may be adversely affected.
The Malfunction Indicator Lamp on the in-
strument cluster may come on. If this hap-
pens, contact your Toyota dealer for ser-
vice.

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Road tar: Remove with turpentine or
cleaners that are marked safe for painted
surfaces.
NOTICE
Do not use organic substances (gaso-
line, kerosene, benzine or strong sol-
vents), which may be toxic or cause
damage.
3. Rinse thoroughly—dried soap cancause streaking. In hot weather you
may need to rinse each section right
after you wash it.
4. To prevent water spots, dry the vehicle using a clean soft cotton towel. Do not
rub or press hard—you might scratch
the paint. Automatic car wash
Your vehicle may be washed in an auto-
matic car wash, but remember that the
paint can be scratched by some type of
brushes, unfiltered washing water, or the
washing process itself. Scratching reduces
paint durability and gloss, especially on
darker colors. The manager of the car
wash should be able to advise you wheth-
er the process is safe for the paint on
your vehicle.
NOTICE

With mast type antenna:
To prevent damage to the antenna,
make sure it is removed before
driving your Toyota through an au-
tomatic car wash.
 When your vehicle goes through an
automatic car wash, make sure the
power sliding door system is off.
Waxing your Toyota
Polishing and waxing is recommended
to maintain the original beauty of your
Toyota’s finish.
Once a month or if the vehicle surface
does not repel water well, apply wax.
1. Always wash and dry the vehicle be- fore you begin waxing, even if you are
using a combined cleaner and wax.
2. Use a good quality polish and wax. If the finish has become extremely weath-
ered, use a carcleaning polish, fol-
lowed by a separate wax. Carefully fol-
low the manufacturer ’s instructions and
precautions. Be sure to polish and wax
the chrome trim as well as the paint.
3. Wax the vehicle again when water does not bead but remains on the sur-
face in large patches.
NOTICE
Always remove the plastic bumpers if
your vehicle is repainted and placed
in a high heat paint waxing booth.
High temperatures could damage the
bumpers.

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CAUTION
Vehicles with side airbags:
Be careful not to splash water or
spill liquid on the floor. This may
prevent the side airbags from acti-
vating correctly, resulting in serious
injury
Do not wash the vehicle floor with
water, or allow water to get onto
the floor when cleaning the vehicle
interior or exterior. Water may get
into audio components or other
electrical components above or un-
der the floor carpet (or mat) and
cause a malfunction; and it may
cause body corrosion.
Vinyl interior
The vinyl upholstery may be easily
cleaned with a mild soap or detergent
and water.
First vacuum over the upholstery to re-
move loose dirt. Then, using a sponge or
soft cloth, apply the soap solution to the
vinyl. After allowing it to soak in for a few
minutes to loosen the dirt, remove the dirt
and wipe off the soap with a clean damp
cloth. If all the dirt do not come off, re-
peat the procedure. Commercial foaming
type vinyl cleaners are also available
which work well. Follow the manufacturer ’s
instructions.
NOTICE
Do not use solvent, thinner, gasoline
or window cleaner on the interior.
Carpets
Use a good foamtype shampoo to
clean the carpets.
Begin by vacuuming thoroughly to remove
as much dirt as possible. Several types of
foam cleaners are available; some are in
aerosol can sand others are powders or
liquids which you mix with water to pro-
duce a foam. To shampoo the carpets,
use a sponge or brush to apply the foam.
Rub in overlapping circles.
Do not apply water—the best results are
obtained by keeping the carpet as dry as
possible. Read the shampoo instructions
and follow them closely.
Seat belts
The seat belts may be cleaned with
mild soap and water or with
l ukewarm
water.
Use a cloth or sponge. As you are clean-
ing, check the belts for excessive wear,
fraying, or cuts.
NOTICE
 Do not use dye or bleach on the
belts—it may weaken them.
 Do not use the belts until they be-
come dry.
Cleaning the interior

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If the new fuse immediately blows out,
there is a problem with the electrical sys-
tem. Have your Toyota dealer correct it as
soon as possible.
CAUTION
Never use a fuse with a higher am-
perage rating, or any other object, in
place of a fuse. This may cause ex-
tensive damage and possibly a fire.
If any washer does not work or low
windshield washer fluid level warning
light comes on, the washer tank may be
empty. Add washer fluid.
You may use plain water as washer fluid.
However, in cold areas where tempera-
tures range below freezing point, use
washer fluid containing antifreeze. This
product is available at your Toyota dealer
and most auto parts stores. Follow the
manufacturer ’s directions for how much to
mix with water.
NOTICE
Do not use engine antifreeze or any
other substitute because it may dam-
age your vehicle’s paint.
The following illustrations show how to
gain access to the bulbs. When replacing
a bulb, make sure the ignition switch and
light switch are off. Use bulbs with the
wattage ratings given in the table.
CAUTION
To prevent yourself from burning,
do not replace the light bulbs while
they are hot.
Halogen bulbs have pressurized gas
inside and require special handling.
They can burst or shatter if
scratched or dropped. Hold a bulb
only by its plastic or metal case.
Do not touch the glass part of a
bulb with bare hands.
NOTICE
Only use a bulb of the listed type.
Adding washer fluidReplacing light bulbs—

03 SIENNA_U (L/O 0207)
3222003 MY SIENNA (OM45410U)
Model:1MZFE
Type: 6 cylinder V type 4 cycle, gasoline
Bore and stroke, mm (in.): 87.5 83.0 (3.44 3.27)
Displacement, cm
3 (cu. in.):
2995 (182.8)
Dimensions and weight
Overall width mm (in.)
2900 (114.2)
Overall height
mm (in.)
1610 (63.4)
Wheelbase
mm (in.)
Front tread mm (in.)1565 (61.6)
Rear tread mm (in.)
511 (1127)
∗: Unladen vehicleOverall length mm (in.)
Vehicle capacity weight
kg (lb.)
(occupants + luggage) 4930 (194.1)
1865 (73.4)
1710 (67.3)
∗
Engine

03 SIENNA_U (L/O 0207)
3232003 MY SIENNA (OM45410U)
Fuel type:Unleaded gasoline, Octane Rating 87
(Research Octane Number 91) or higher.
For improved vehicle performance, the
use of premium unleaded gasoline with
an Octane Rating of 91 (Research Oc-
tane Number 96) or higher is recom-
mended.
Fuel tank capacity, L (gal., Imp. gal.): 79 (21, 17.5) ENGINE
Valve clearance (engine cold), mm (in.):
Intake 0.15—0.25 (0.006—0.010)
Exhaust 0.25—0.35 (0.010—0.014)
Spark plug type: DENSO SK20R11
NGK IFR6A11
Spark plug gap, mm (in.): 1.1 (0.043)
Drive belt tension measured with Bor-
roughs drive belt tension gauge
No.BT3373F (used belt), Ibf: Generator belt 125 10
Power steering pump belt 115 20
ENGINE LUBRICATION
Oil capacity (drain and ref ill),
L (qt., Imp. qt.): With filter 4.7 (5.0, 4.1)
Without filter 4.5 (4.8, 4.0)
“Toyota Genuine Motor Oil” is f illed in
your Toyota vehicle. Use Toyota approved
“Toyota Genuine Motor Oil” or equivalent
to satisfy the following grade and
viscosity.
Oil grade: API grade SL “EnergyConserving” or
ILSAC multigrade engine oil Recommended oil viscosity:
SAE 5W30
Outside temperature
Please contact your Toyota dealer for fur-
ther details.
COOLING SYSTEM
Total capacity, L (qt., Imp. qt.):10.4 (11.0, 9.2)
Coolant type: “Toyota Genuine Long Life Coolant” is
filled in your Toyota vehicle. In order to
avoid technical problems, we strongly
recommend using “Toyota Genuine Long
Life Coolant” or equivalent.
Fuel Service specifications

03 SIENNA_U (L/O 0207)
2003 MY SIENNA (OM45410U)
Publication No. OM45410U
Part No. 01999-45410
Printed in Japan 01−0207 −00
(U)
Quick index
 If a service reminder indicator or warning buzzer comes on 139 . . . . . . . .
 If your vehicle will not start 254 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. .
 If your engine stalls while driving 257 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
 If your vehicle overheats 257 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . .
 If you have a flat tire 258 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . .
 If your vehicle needs to be towed 269 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
 Tips for driving during break −in period 226 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
 How to start the engine 242 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . .
 General maintenance 283 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . .
Gas station information
Fuel type:
UNLEADED gasoline, Octane Rating 87 (Research Octane Number 91)
or higher.
For improved vehicle performance, the use of premium unleaded gasoline
with an Octane Rating of 91 (Research Octane Number 96) or higher is
recommended.
See page 226 for detailed information.
Fuel tank capacity:
79 L (21 gal., 17.5 lmp. gal.)
Engine oil: API grade SL “Energy −Conserving” or ILSAC multigrade engine oil is
recommended.
See page 297 for detailed information.
Automatic transmission fluid: Toyota Genuine ATF D −II or DEXRON III (DEXRON II)
See page 324 for detailed information.
Tire information: See pages 301 through 307.
Tire pressure: See page 325.
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