Page 185 of 282

00 SIENNA(U)
179
CAUTION
Do not place anything else other
than cups or drink−cans on the cup
holder, as such items may be
thrown about in the compartment
and possibly injure people in the
vehicle during sudden braking or in
an accident.
To reduce the chance of injury in
case of an accident or sudden stop
while driving, keep the cup holder
closed when it is not in use.
AUXILIARY BOX
Although the first−aid kit and warning
reflector themselves are not included as
original equipments, this auxiliary box
(rear left side) can be used to store
them.
To open the auxiliary box, push down the
lever and pull the lid.FIRST−AID KIT AND WARNING REFLEC-
TOR HOLDER
This belt is designed to hold the first−
aid kit and warning reflector.
To use the belt, do the following.
1. To loosen the belt, pull the buckle rear-
ward.
2. To tighten the belt, pull the belt for-
ward.
Make sure the first−aid kit and warning
reflector are securely held.
First−aid kit and warning
reflector holder
ProCarManuals.com
Page 186 of 282

00 SIENNA(U)
180
Tire pressure warning system
The tire pressure warning system is de-
signed to provide warning when tire
pressure of any one of the tires is criti-
cally reduced while the vehicle is mov-
ing. The low tire pressure warning light
comes on to inform you that such low
tire pressure may hamper driving.
This system is not designed to operate
when the vehicle is stopped. Therefore,
check the tire pressures regularly. The
recommended cold tire pressures, tire size
and the vehicle capacity weight are on the
tire pressure label. (For instruction, see
“Checking tire pressure” in Section 7−2.)
Installed tires should be of the specified
size. They should be of the same size
and construction. If tires other than of the
specified size are used, or if tires of dif-
ferent sizes or constructions are mixed,
the tire pressure warning system will not
function properly.
LOW TIRE PRESSURE WARNING LIGHT
This light comes on when the ignition key
is turned to the “ON” position. It goes off
after a few seconds. This indicates that
the tire pressure warning system is func-
tioning properly.
If the low tire pressure warning light
comes on while driving, adjust tire
pressure to the specified level. (See
“Tires” in Section 8.)
After the tire pressure is adjusted, the
light should go off after driving at about
more than 30 km/h (19 mph) for some
time. If the light still remains, have the
tire pressure warning system checked at
your Toyota dealer.The tire pressure warning system does
not function properly under certain cir-
cumstances. In the following cases, the
low tire pressure warning light may not
come on even if the tire pressure is
low, or it may come on when the tire
pressure is actually normal.
If the tread wear is uneven among the
installed tires,
If a compact spare tire, snow tires, or
tire chains are used,
If the tire pressure is excessively high-
er than specified, or if tire pressure is
suddenly reduced due to bursts or oth-
er causes,
If the vehicle is driven on a slippery
road surface such as rough road and
frozen road,
If the vehicle speed is less than 30
km/h (19 mph) or more than 100 km/h
(62 mph), and if the driving duration is
less than 5 minutes,
ProCarManuals.com
Page 187 of 282

00 SIENNA(U)
181
AFTER REPLACING OR ROTATING
TIRES OR WHEELS
Initial adjustment of the tire pressure
warning system is necessary after you
have replaced or rotated your tires or
wheels.
1. Park the vehicle at a safe place and
apply the parking brake. Stop the en-
gine.
2. Adjust pressures of all the installed
tires to the specified level. (See “Tires”
in Section 8.)
3. Turn the ignition key to “ON”.4. With the vehicle stopped, push the re-
set switch on the left lower instrument
panel and hold it until the low tire
pressure warning light blinks for three
times.
5. The initial adjustment is completed af-
ter driving at the speeds of 30 km/h
(19 mph) or over for about total 8
hours, when the tire pressure warning
system detects the normal tire pres-
sures.
Do not push the reset switch without ad-
justing the tire pressure to the specified
level. Otherwise, the low tire pressure
warning light may not come on even if the
tire pressure is low, or it may come on
when the tire pressure is actually normal.
If you push the reset switch while the
vehicle is moving, the initial adjustment is
not performed.
If the low tire pressure warning light does
not blink when you push and hold the
reset switch, have the low pressure warn-
ing system checked at your Toyota dealer.
Floor mat
Use a floor mat of the correct size.
If the floor carpet and floor mat have a
hole, then it is designed for use with a
locking clip. Fix the floor mat with locking
clip into the hole in the floor carpet.
ProCarManuals.com
Page 188 of 282
00 SIENNA(U)
182
CAUTION
Make sure the floor mat is properly
placed on the floor carpet. If the floor
mat slips and interferes with the
movement of the pedals during driv-
ing, it may cause an accident.
ProCarManuals.com
Page 189 of 282

00 SIENNA(U)
183
INFORMATION BEFORE DRIVING YOUR
TOYOTA
Break−in period184 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuel184 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation in foreign countries186 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Three−way catalytic converter186 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine exhaust cautions187 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Facts about engine oil consumption188 . . . . . . . . . . . . . . . . . . . . . . . . . .
Twin ground electrode platinum−tipped spark plugs189 . . . . . . . . . . . .
Brake system189 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brake pad wear limit indicators191 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Luggage stowage precautions192 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Roof luggage carrier192 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Your Toyota’s identification193 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Theft prevention labels194 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Suspension and chassis195 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Types of tires195 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 2
ProCarManuals.com
Page 190 of 282

00 SIENNA(U)
184
Break−in period
Drive gently and avoid high speeds.
Your vehicle does not need an elaborate
break−in. 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:
Do not drive over 88 km/h (55 mph).
Run the engine at moderate speed be-
tween 2000 and 4000 rpm.
Avoid full−throttle starts.
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
FUEL TYPE
Your new vehicle must use only un-
leaded gasoline.
To help prevent gas station mix−ups, your
Toyota has a new smaller fuel tank open-
ing. The special nozzle on pumps with
unleaded fuel will fit it, but the larger
standard 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 3.5−M93
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.
ProCarManuals.com
Page 191 of 282

00 SIENNA(U)
185
GASOLINES CONTAINING DETERGENT
ADDITIVES
Toyota recommends use of gasolines
that contain detergent additives to
avoid build−up of engine deposits.
For further details, ask your Toyota dealer
or a local gasoline retailer.
IMPROVED GASOLINES
The American Automobile Manufacturers
Association (AAMA) has developed a
specification of improved gasolines. The
AAMA specification offers optimal fuel
information for better vehicle perfor-
mance and better protection of your en-
gine.
Toyota recommends the use of gasolines
that meet the AAMA specification, if avail-
able, for improved driveability and emis-
sion control system.
GASOLINES CONTAINING MTBE
Gasolines that contain MTBE (Methyl
Tertiary−Butyl Ether) are available in the
market. If you use a gasoline mixed
with MTBE, make certain that it does
not contain more than 15% of MTBE.GASOLINES CONTAINING MMT
Some gasolines contain an octane−en-
hancing additive called MMT (methylcy-
clopentadienyl manganese tricarbonyl).
Toyota does not recommend the use of
gasolines that contain MMT. If fuels con-
taining MMT are 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.
GASOLINES CONTAINING ALCOHOL
If you use gasohol in your Toyota, be
sure that it is unleaded, has an octane
rating no lower than 87 and does not
contain more than 10% ethanol.
Gasohol is a mixture of gasoline and etha-
nol.
Toyota does not recommend the use of
gasolines containing methanol. If you use
gasoline containing methanol, use only
gasoline meeting the requirements above
and also containing less than 5% metha-
nol with cosolvents and corrosion inhibi-
tors for methanol.GASOLINES QUALITY
In a very few cases, you may experience
driveability problems caused by the partic-
ular gasoline that you are using. If you
continue to have unacceptable driveability,
try changing gasoline brands. If that does
not rectify your problem, then consult your
Toyota dealer.
NOTICE
Do not use gasohol other than
stated above. It will cause fuel sys-
tem damage or vehicle performance
problems.
If driveability problems occur (poor
hot starting, vaporizing, engine
knock, etc.), discontinue the use.
Take care not to spill gasohol dur-
ing refueling. Gasohol may cause
paint damage.
FUEL TANK CAPACITY
79 L (21 gal., 17.5 lmp. gal.)
ProCarManuals.com
Page 192 of 282
00 SIENNA(U)
186
Operation in foreign countries
If you plan to drive your Toyota in
another country...
First, comply with the vehicle registration
laws.
Second, confirm the availability of the cor-
rect fuel (unleaded and minimum octane
number).
Three−way catalytic converter
Ty p e A
Ty p e B
The three−way catalytic converter is an
emission control device installed in the
exhaust system.
The purpose is to reduce pollutants in the
exhaust gas.
CAUTION
Keep people and combustible mate-
rials away from the exhaust pipe
while the engine is running. The
exhaust gas is very hot.
Do not drive, idle or park your ve-
hicle over anything that might burn
easily such as grass, leaves, paper
or rags.
NOTICE
A large amount of unburned gases
flowing into the three−way catalytic
converter may cause it to overheat
and create a fire hazard. To prevent
this and other damage, observe the
following precautions:
Use only unleaded gasoline.
ProCarManuals.com