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05 SIENNA_U (L/O 0409)
SECTION 2
INFORMATION BEFORE DRIVING YOUR
TOYOTA
Information before driving your Toyota
Break- in period . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 376
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 376
Fuel pump shut off system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 378
Operation in foreign countries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 378
Three- way catalytic converters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 379
Engine exhaust cautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 380
Facts about engine oil consumption . . . . . . . . . . . . . . . . . . . . . . . . . . 380
Iridium- tipped spark plugs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 381
Brake system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 382
Brake pad wear limit indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 386
Your Toyota's identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 386
Theft prevention labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 387
Suspension and chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 387
Tire information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 388
Vehicle load limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 398
Cargo and luggage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 399
Types of tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 402
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Break- in period Fuel
Drive gently and avoid high speeds. FUEL TYPE OCTANE RATING
Your vehicle does not need an elaborate Your new vehicle must use only un- Select Octane Rating 87 (Research
break- in. But following a few simple tips leaded gasoline. Octane Number 91) or higher. For
for the first 1600 km (1000 miles) can add To help prevent gas station mix- ups, your improved vehicle performance, the use
to the future economy and long life of Toyota has a smaller fuel tank opening. of premium unleaded gasoline with an
your vehicle: The special nozzle on pumps with un- Octane Rating of 91 (Research Octane
D Avoid full throttle acceleration when leaded fuel will fit it, but the larger stan- Number 96) or higher is recommended.
starting and driving. dard nozzle on pumps with leaded gas will Use of unleaded gasoline with an octane
D Avoid racing the engine. not. rating or research octane number lower
than stated above will cause persistent
D Try to avoid hard stops during the first At a minimum, the gasoline you use
heavy knocking. If it is severe, this will
300 km (200 miles). should meet the specifications of ASTM
D4814 in the U.S.A. and CGSB 3.5- M93 lead to engine damage.
D Do not drive for a long time at any in Canada. If your engine knocks...
single speed, either fast or slow.
If you detect heavy knocking even when
D Do not tow a trailer during the first 800 NOTICE
using the recommended fuel, or if you
km (500 miles). hear steady knocking while holding a
Do not use leaded gasoline. Use of
leaded gasoline will cause the three- steady speed on level roads, consult your
way catalytic converter to lose its ef- Toyota dealer.
fectiveness and the emission control However, occasionally, you may notice
system to function improperly. Also, light knocking for a short time while accel-
this can increase maintenance costs. erating or driving up hills. This is normal
and there is no need for concern.
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GASOLINE CONTAINING DETERGENT CLEANER BURNING GASOLINE GASOLINE CONTAINING MMT
ADDITIVES Cleaner burning gasoline, including re- Some gasoline contain an octane en-
Toyota recommends the use of gasoline formulated gasoline that contains oxy- hancing additive called MMT (Methylcy-
that contains detergent additives to genates such as ethanol or MTBE is clopentadienyl Manganese Tricarbonyl).
avoid build- up of engine deposits. available in many areas. Toyota does not recommend the use of
However, all gasoline sold in the U.S. Toyota recommends the use of cleaner gasoline that contains MMT. If fuel con-
contains detergent additives to keep clean burning gasoline and appropriately blended taining MMT is used, your emission con-
and/or clean intake systems. reformulated gasoline. These types of gas- trol system may be adversely affected.
QUALITY GASOLINE oline provide excellent vehicle perfor- The Malfunction Indicator Lamp on the in-
mance, reduce vehicle emissions, and im- strument cluster may come on. If this hap-
Automotive manufacturers in the U.S., prove air quality. pens, contact your Toyota dealer for ser-
Europe and Japan have developed a vice.
specification for quality fuel named OXYGENATES IN GASOLINE
World- Wide Fuel Charter (WWFC) that Toyota allows the use of oxygenate
is expected to be applied world wide. blended gasoline where the oxygenate
The WWFC consists of four categories content is up to 10% ethanol or 15%
that depend on required emission lev- MTBE. If you use gasohol in your
els. In the U.S., category 4 has been Toyota, be sure that it has an octane
adopted. The WWFC improves air quali- rating no lower than 87.
ty by providing for better emissions in Toyota does not recommend the use of
vehicle fleets, and customer satisfaction gasoline containing methanol.
through better vehicle performance.
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Fuel pump shut off system Operation in foreign countries
GASOLINE QUALITY The fuel pump shut off system stops sup- If you plan to drive your Toyota in
In a very few cases, you may experience plying fuel to the engine to minimize the another country...
driveability problems caused by the partic- risk of fuel leakage when the engine stalls First, comply with the vehicle registration
ular gasoline that you are using. If you or an airbag inflates upon collision. To laws.
continue to have unacceptable driveability, restart the engine after the fuel pump shut
off system activates, turn the ignition Second, confirm the availability of the cor-
try changing gasoline brands. If this does rect fuel (unleaded and minimum octane
not rectify your problem, then consult your switch to "ACC" or "LOCK" once and start
it. number).
Toyota dealer.
NOTICE CAUTION
z Do not use gasohol other than Inspect the ground under the vehicle
stated above. It will cause fuel sys- before restarting the engine. If you
tem damage or vehicle performance find that liquid has leaked onto the
problems. ground, it is the fuel system has
z If driveability problems occur (poor been damaged and it is in need of
hot starting, vaporizing, engine repair. In this case, do not restart the
knock, etc.), discontinue the use. engine.
z Take care not to spill gasohol dur-
ing refueling. Gasohol may cause
paint damage.
FUEL TANK CAPACITY
79 L (21 gal., 17.5 Imp. gal.)
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Three- way catalytic converters
NOTICE z Keep your engine in good running
order. Malfunctions in the engine
A large amount of unburned gases
electrical system, electronic ignition
flowing into the three- way catalytic system/distributor ignition system
converter may cause it to overheat
or fuel system could cause an ex-
and create a fire hazard. To prevent
tremely high three- way catalytic
this and other damage, observe the converter temperature.
following precautions:
z If the engine becomes difficult to
z Use only unleaded gasoline.
start or stalls frequently, take your
z Do not drive with an extremely low vehicle in for a check- up as soon
fuel level; running out of fuel could as possible. Remember, your Toyota
cause the engine to misfire, creat- dealer knows your vehicle and its
ing an excessive load on the three- three- way catalytic converter sys-
The three- way catalytic converter is an way catalytic converter. tem best.
emission control device installed in the z Do not allow the engine to run at z To ensure that the three- way cata-
exhaust system. idle speed for more than 20 min- lytic converter and the entire emis-
The purpose is to reduce pollutants in the utes. sion control system operate proper-
exhaust gas. z Avoid racing the engine. ly, your vehicle must receive the
periodic inspections required by the
z Do not push- start or pull- start your
CAUTION Toyota Maintenance Schedule. For
vehicle. scheduled maintenance information,
D Keep people and combustible mate- z Do not turn off the ignition while refer to the "Scheduled Maintenance
rials away from the exhaust pipe the vehicle is moving. Guide" or "Owner's Manual Supple-
while the engine is running. The ment".
exhaust gas is very hot.
D Do not drive, idle or park your ve-
hicle over anything that might burn
easily such as grass, leaves, paper
or rags.
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Facts about engine oil
Engine exhaust cautions consumption
FUNCTIONS OF ENGINE OIL
CAUTION D Keep the back door and quarter
Engine oil has the primary functions of
windows closed while driving. An
lubricating and cooling the inside of the
D Avoid inhaling the engine exhaust. open or unsealed back door and
quarter windows may cause exhaust engine, and plays a major role in main-
It contains carbon monoxide, which
taining the engine in proper working order.
is a colorless and odorless gas. It gases to be drawn into the vehicle.
can cause unconsciousness or even D To allow proper operation of your ENGINE OIL CONSUMPTION
death. vehicle's ventilation system, keep It is normal that an engine should con-
D Make sure the exhaust system has the inlet grilles in front of the wind- sume some engine oil during normal
no holes or loose connections. The shield clear of snow, leaves, or oth- engine operation. The causes of oil
system should be checked from er obstructions. consumption in a normal engine are as
follows.
time to time. If you hit something, D If you smell exhaust fumes in the
or notice a change in the sound of vehicle, drive with the windows D Oil is used to lubricate pistons, piston
the exhaust, have the system open and the back door and quarter rings and cylinders. A thin film of oil
checked immediately. windows closed. Have the cause im- is left on the cylinder wall when a pis-
D Do not run the engine in a garage mediately located and corrected. ton moves downwards in the cylinder.
or enclosed area except for the High negative pressure generated when
time needed to drive the vehicle in the vehicle is decelerating sucks some
or out. The exhaust gases cannot of this oil into the combustion chamber.
escape, making this a particularly This oil as well as some part of the oil
dangerous situation. film left on the cylinder wall is burned
by the high temperature combustion
D Do not remain for a long time in a
gases during the combustion process.
parked vehicle with the engine run-
ning. If it is unavoidable, however, D Oil is also used to lubricate the stems
do so only in an unconfined area of the intake valves. Some of this oil
and adjust the heating or cooling is sucked into the combustion chamber
system to force outside air into the together with the intake air and is
vehicle. burned along with the fuel. High tem-
perature exhaust gases also burn the
oil used to lubricate the exhaust valve
stems.
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Iridium- tipped spark plugs
The amount of engine oil consumed de- IMPORTANCE OF ENGINE OIL LEVEL
pends on the viscosity of the oil, the CHECK
quality of the oil and the conditions the One of the most important points in prop-
vehicle is driven under. er vehicle maintenance is to keep the en-
More oil is consumed by high- speed driv- gine oil at the optimum level so that oil
ing and frequent acceleration and decel- function will not be impaired. Therefore, it
eration. is essential that the oil level be checked
A new engine consumes more oil, since regularly. Toyota recommends that the oil
its pistons, piston rings and cylinder walls level be checked every time you refuel
have not become conditioned. the vehicle.
Oil consumption: Max. 1.0 L per 1000 NOTICE
km (1.1 qt./600 miles, 0.9 Imp. qt./600
miles) Failure to check the oil level regularly
could lead to serious engine trouble Your engine is fitted with iridium- tipped
When judging the amount of oil con-
due to insufficient oil. spark plugs.
sumption, note that the oil may become
diluted and make it difficult to judge
the true level accurately. For detailed information on oil level check, NOTICE
see "Checking the engine oil level" on
As an example, if a vehicle is used for Use only iridium- tipped spark plugs
page 466 in Section 7- 2.
repeated short trips, and consumes a nor- and do not adjust gaps for your en-
mal amount of oil, the dipstick may not gine performance smooth drive- abili-
show any drop in the oil level at all, even ty.
after 1000 km (600 miles) or more. This
is because the oil is gradually becoming
diluted with fuel or moisture, making it
appear that the oil level has not changed.
The diluting ingredients evaporate out
when the vehicle is then driven at high
speeds, as on an express way, making it
appear that oil is excessively consumed
after driving at high speeds.
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Brake system
The tandem master cylinder brake system Effective way to press the ABS brake
is a hydraulic system with two separate CAUTION
pedal: When the anti- lock brake system
sub- systems. If either sub- system should function is in action, you may feel the
fail, the other will still work. However, the D Do not pump the brake pedal if the
brake pedal pulsating and hear a noise.
pedal will be harder to press, and your engine stalls. Each push on the
pedal uses up your reserved vacu- In this situation, to let the anti- lock
stopping distance will increase. Also, the brake system work for you, just hold the
brake system warning light may come on. um.
brake pedal down more firmly. Do not
D Even if the power assist is com- pump the brake in a panic stop. This
CAUTION pletely lost, the brakes will still will result in reduced braking performan-
work. But you will have to push the ce.
Do not drive your vehicle with only a pedal hard, much harder than nor-
single brake system. Have your mal. And your braking distance will The anti- lock brake system becomes op-
brakes fixed immediately. increase. erative after the vehicle has accelerated
to a speed in excess of approximately 10
km/h (6 mph). It stops operating when the
BRAKE BOOSTER ANTI- LOCK BRAKE SYSTEM (with
vehicle decelerates to a speed below
The brake booster uses engine vacuum to "ABS" warning light)
approximately 5 km/h (3 mph).
power- assist the brakes. If the engine The anti- lock brake system is designed
Depressing the brake pedal on slippery
should quit while you are driving, you can to help prevent lock- up of the wheels
road surfaces such as on a manhole cov-
bring the vehicle to a stop with normal during a sudden braking or braking on
er, a steel plate at a construction site,
pedal pressure. There is enough reserved slippery road surfaces. This assists in
joints in a bridge, etc. on a rainy day
vacuum for one or two stops--but no providing directional stability and steer-
tends to activate the anti- lock brake sys-
more! ing performance of the vehicle under
tem.
these circumstances.
You may hear a click or motor sound in
the engine compartment for a few seconds
when the engine is started or just after
the vehicle begins to move. This means
that the anti- lock brake system is in the
self- check mode, and does not indicate a
malfunction.
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When the anti- lock brake system is ac-
tivated, the following conditions may CAUTION D Driving on rough, gravel or snow-
occur. They do not indicate a malfunc- covered roads.
tion of the system: Do not overestimate the anti- lock D Driving with tire chains installed.
brake system: Although the anti- lock
D You may hear the anti- lock brake sys- brake system assists in providing ve- D Driving over the steps such as the
tem operating and feel the brake pedal joints on the road.
hicle control, it is still important to
pulsating and the vibrations of the ve-
drive with all due care and maintain D Driving on roads where the road
hicle body and steering wheel. You
a moderate speed and safe distance surface is pitted or has other differ-
may also hear the motor sound in the
from the vehicle in front of you, be- ences in surface height.
engine compartment even after the ve-
cause there are limits to the vehicle Install all 4 tires of specified size at
hicle is stopped.
stability and effectiveness of steering appropriate pressure: The anti- lock
D At the end of the anti- lock brake sys- wheel operation even with the anti- brake system detects vehicle speeds
tem activation, the brake pedal may lock brake system on. using the speed sensors for respec-
move a little forward.
If tires grip performance exceeds its tive wheels' turning speeds. The use
capability, or if hydroplaning occurs of tires other than specified may fail
during high speed driving in the rain, to detect the accurate turning speed
the anti- lock brake system does not resulting in a longer stopping dis-
provide vehicle control. tance.
Anti- lock brake system is not de-
signed to shorten the stopping dis-
tance: Always drive at the moderate
speed and maintain a safe distance
from the vehicle in front of you.
Compared with vehicles without an
anti- lock brake system, your vehicle
may require a longer stopping dis-
tance in the following cases:
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"ABS" warning light If either of the following conditions
Vehicles without the vehicle stability occurs, this indicates a malfunction
control system-- somewhere in the components moni-
tored by the warning light system. Con-
The light comes on when the ignition key tact your Toyota dealer as soon as
is turned to the "ON" position. If the anti- possible to service the vehicle.
lock brake system works properly, the
light turns off after a few seconds. There- D The light does not come on when the
after, if either of the systems malfunc- ignition key is turned to the "ON" posi-
tions, the light comes on again. tion, or remains on.
When the "ABS" warning light is on (and D The light comes on while you are driv-
the brake system warning light is off), the ing.
anti- lock brake system does not operate, A warning light turning on briefly during
but the brake system still operates con- operation does not indicate a problem.
Type A
ventionally.
When the "ABS" warning light is on (and CAUTION
the brake system warning light is off), the
anti- lock brake system does not operate If the "ABS" warning light remains on
but the brake assist system still operates. together with the brake system warn-
In this case the wheels could lock up ing light, immediately stop your ve-
during a sudden braking or braking on hicle at a safe place and contact your
slippery road surfaces. Toyota dealer.
In this case, not only the anti- lock
brake system will fail but also the
vehicle will become extremely unsta-
ble during braking.
Type B
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Vehicles with the vehicle stability con- If either of the following conditions BRAKE ASSIST SYSTEM
trol system-- occurs, this indicates a malfunction When you slam the brakes on, the
The light comes on when the ignition key somewhere in the components moni- brake assist system judges as an emer-
is turned to the "ON" position. If the anti- tored by the warning light system. Con- gency stop and provides more powerful
lock brake system and the brake assist tact your Toyota dealer as soon as braking for a driver who cannot hold
system work properly, the light turns off possible to service the vehicle. down the brake pedal firmly.
after a few seconds. Thereafter, if either D The light does not come on when the When you slam the brakes on, more pow-
of the systems malfunctions, the light ignition key is turned to the "ON" posi- erful braking will be applied. At this time,
comes on again. tion, or remains on. you may hear a sound in the engine
When the "ABS" warning light is on (and D The light comes on while you are driv- compartment and feel the vibrations of the
the brake system warning light is off), the ing. brake pedal. This does not indicate a mal-
anti- lock brake system, the brake assist function.
A warning light turning on briefly during
system, the traction control system and operation does not indicate a problem. Vehicles with the vehicle stability control
the vehicle stability control system do not system--
operate, but the brake system still oper-
CAUTION The brake assist system becomes opera-
ates conventionally.
tive after the vehicle has accelerated to
When the "ABS" warning light is on (and If the "ABS" warning light remains on a speed in excess of approximately 10
the brake system warning light is off), the together with the brake system warn- km/h (6 mph). It stops operating when the
anti- lock brake system does not operate ing light, immediately stop your ve- vehicle decelerates to a speed below
so that the wheels could lock up during hicle at a safe place and contact your approximately 5 km/h (3 mph).
a sudden braking or braking on slippery Toyota dealer. For an explanation of this system's warn-
road surfaces.
In this case, not only the anti- lock ing light, see "Service reminder indicators
brake system will fail but also the and warning buzzers" on page 175 in Sec-
vehicle will become extremely unsta- tion 1- 6.
ble during braking.
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Your Toyota's identification--
Brake pad wear limit --Vehicle identification
indicators number
The brake pad wear limit indicators on The vehicle identification number (VIN) The vehicle identification number (VIN) is
your disc brakes give a warning noise is the legal identifier for your vehicle. also on the Certification Label.
when the brake pads are worn to where This number is on the left top of the
replacement is required. instrument panel, and can be seen
If you hear a squealing or scraping noise through the windshield from outside.
while driving, have the brake pads This is the primary identification number
checked and replaced by your Toyota for your Toyota. It is used in registering
dealer as soon as possible. Expensive ro- the ownership of your vehicle.
tor damage can result if the pads are not
replaced when necessary.
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Theft prevention labels
--Engine number (except for Canada) Suspension and chassis
Your new vehicle carries theft preven-
tion labels which are approximately 47 CAUTION
mm (1.90 in.) by 12 mm (0.50 in.).
Do not modify the suspension/chassis
The purpose of these labels is to reduce
with lift kits, spacers, springs, etc. It
the incidence of vehicle thefts by facilitat-
can cause dangerous handling charac-
ing the tracing and recovery of parts from
teristics, resulting in loss of control.
stolen vehicles. The label is designed so
that once it is applied to a surface, any
attempt to remove it will result in destroy-
ing the integrity of the label. Transferring
these labels intact from one part to anoth-
er, will be impossible.
NOTICE
The engine number is stamped on the
engine block as shown. You should not attempt to remove the
theft prevention labels as it may vio-
late certain state or federal laws.
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Tire information--
--Tire symbols (run- flat tire or standard tire)
This illustration indicates typical tire
symbols.
1. Tire size--For details, see "--Tire
size" on page 392.
2. DOT and Tire Identification
Number (TIN)--For details, see
"--DOT and Tire Identification
Number (TIN)" on page 391.
3. Uniform tire quality grading--
For details, see "Uniform tire quali-
ty grading" that follows.
4. The location of the tread wear
indicators--For details, see
"Checking and replacing tires" on
page 474.
5. Tire ply composition and mate-
rials--Plies mean a layer of rub-
ber- coated parallel cords. Cords
mean the strands forming the plies
in the tire.
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6. Run- flat tire (RFT) or standard 10.Maximum cold tire inflation
tire--This vehicle can be pressure--This means the pres-
equipped with either run- flat tires sure to which a tire may be in-
(RFT) or standard tires. A "RFT" flated. For details about recom-
or "DSST" mark is molded on the mended cold tire inflation
sidewall of the run- flat tire. For pressure, see "Tires" on page 499.
details, see "Run- flat tires" on 11. Summer tire or all season
page 477. tire--An all season tire has "M+S"
7. Radial tire or bias- ply tires--A on the sidewall. The tire not
radial tire has "RADIAL" on the marked with "M+S" is a summer
sidewall. A tire not marked with tire. For details, see "Types of
"RADIAL" is a bias- ply tire. tires" on page 402.
8. "TUBELESS" or "TUBE
TYPE"--A tubeless tire does not
have a tube inside the tire and air
is directly filled in the tire. A tube
type tire has a tube inside the tire
and the tube maintains the air
pressure.
9. Load limit at maximum cold tire
inflation pressure--For details,
see "Checking and replacing tires"
on page 474.
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--Tire symbols (compact spare tire)
This illustration indicates typical tire
symbols.
1. "TEMPORARY USE ONLY"--A
compact spare tire is identified by
the phrase "TEMPORARY USE
ONLY" molded into its sidewall.
This tire is designed for temporary
emergency use only. For details,
see "--Compact spare tire" on
page 423.
2. Tire size--For details, see "--Tire
size" on page 392.
3. DOT and Tire Identification
Number (TIN)--For details, see
"--DOT and Tire Identification
Number (TIN)" on page 391.
4. The location of the tread wear
indicators--For details, see
"Checking and replacing tires" on
page 474.
5. Load limit at maximum cold tire
inflation pressure--For details,
see "Checking and replacing tires"
on page 474.
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--DOT and Tire Identification
Number (TIN)
6. Maximum cold tire inflation The "DOT" symbol certifies that the
pressure--This means the pres- tire conforms to applicable Federal
sure to which a tire may be in- Motor Vehicle Safety Standards.
flated. For details about recom-
mended cold tire inflation
pressure, see "Tires" on page 499.
7. Tire ply composition and mate-
rials--Plies mean a layer of rub-
ber- coated parallel cords. Cords
mean the strands forming the plies
in the tire.
8. "TUBELESS" or "TUBE
TYPE"--A tubeless tire does not This illustration indicates typical DOT
have a tube inside the tire and air and Tire Identification Number (TIN).
is directly filled in the tire. A tube
type tire has a tube inside the tire 1. "DOT" symbol
and the tube maintains the air 2. Tire Identification Number (TIN)
pressure. 3. Tire manufacturer's identification
9. Radial tire or bias- ply tires--A mark
radial tire has "RADIAL" on the 4. Tire size code
sidewall. A tire not marked with
"RADIAL" is a bias- ply tire. 5. Manufacturer's optional tire type
code
6. Manufacturing week
7. Manufacturing year
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--Tire size --Name of each section of tire
This illustration indicates typical tire 1. Section width 1. Bead
size. 2. Tire height 2. Sidewall
1. Tire use (P=Passenger car, 3. Wheel diameter 3. Shoulder
T=Temporary use)
4. Tread
2. Section width (in millimeters)
5. Belt
3. Aspect ratio (tire height to section
width) 6. Inner liner
4. Tire construction code (R=Radial, 7. Reinforcing rubber
D=Diagonal) 8. Carcass
5. Wheel diameter (in inches) 9. Rim lines
6. Load index (2 digits or 3 digits) 10.Bead wires
7. Speed symbol (alphabet with one 11. Chafer
letter)
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2005 SIENNA from Sep. '04 Prod. (OM45431U)
05 SIENNA_U (L/O 0409)
--Uniform tire quality grading
This information has been prepared Treadwear--The treadwear grade is Traction AA, A, B, C--The traction
in accordance with regulations issued a comparative rating based on the grades, from highest to lowest, are
by the National Highway Traffic Safe- wear rate of the tire when tested un- AA, A, B, and C, and they represent
ty Administration of the U.S. Depart- der controlled conditions on a speci- the tire's ability to stop on wet pave-
ment of Transportation. It provides fied government test course. For ex- ment as measured under controlled
the purchasers and/or prospective ample, a tire graded 150 would wear conditions on specified government
purchasers of Toyota vehicles with in- one and a half (1- 1/2) times as well test surfaces of asphalt and concrete.
formation on uniform tire quality grad- on the government course as a tire A tire marked C may have poor trac-
ing. graded 100. The relative performance tion performance.
Your Toyota dealer will help answer of tires depends upon the actual Warning: The traction grade assigned
any questions you may have as you conditions of their use, however, and to this tire is based on braking
read this information. may depart significantly from the (straight ahead) traction tests and
norm due to variations in driving hab- does not include cornering (turning)
DOT quality grades--All passenger its, service practices and differences
vehicle tires must conform to Fed- traction.
in road characteristics and climate.
eral Safety Requirements in addi-
tion to these grades. Quality
grades can be found where appli-
cable on the tire sidewall between
tread shoulder and maximum sec-
tion width. For example: Treadwear
200 Traction AA Temperature A
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05 SIENNA_U (L/O 0409)
Temperature A, B, C--The tempera-
ture grades are A (the highest), B,
and C, representing the tire's resis-
tance to the generation of heat and
its ability to dissipate heat when
tested under controlled conditions on
a specified indoor laboratory test
wheel. Sustained high temperature
can cause the material of the tire to
degenerate and reduce tire life, and
excessive temperature can lead to
sudden tire failure. The grade C cor-
responds to a level of performance
which all passenger car tires must
meet under the Federal Motor Vehicle
Safety Standard No.109. Grades B
and A represent higher levels of per-
formance on the laboratory test wheel
than the minimum required by law.
Warning: The temperature grades for
this tire are established for a tire that
is properly inflated and not over-
loaded. Excessive speed, underinfla-
tion, or excessive loading, either sep-
arately or in combination, can cause
heat buildup and possible tire failure.
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2005 SIENNA from Sep. '04 Prod. (OM45431U)
05 SIENNA_U (L/O 0409)
--Glossary of tire terminology
Tire related term Meaning
the combined weight (in excess of those standard items which may be
replaced) of automatic transmission, power steering, power brakes, power
Accessory weight
windows, power seats, radio, and heater, to the extent that these items
are available as factory- installed equipment (whether installed or not)
tire inflation pressure when the vehicle has been parked for at least 3
Cold tire inflation pressure hours or more, or it has not been driven more than 1.5 km or 1 mile
under that condition
the weight of a motor vehicle with standard equipment including the
Curb weight maximum capacity of fuel, oil, and coolant, and, if so equipped, air
conditioning and additional weight optional engine
(A) the sidewall that contains a whitewall, bears white lettering or bears
manufacturer, brand, and/or model name molding that is higher or
Intended outboard sidewall deeper than the same molding on the other sidewall of the tire, or
tire
(B) the outward facing sidewall of an asymmetrical tire that has a particular
side that must always face outward when mounted on a vehicle
the maximum cold inflation pressure to which a tire may be inflated and it
Maximum inflation pressure
is shown on the sidewall of the tire
the sum of--
(a) curb weight;
weight
Maximum loaded vehicle weight (b) accessory weight;
weight
( )
(c) vehicle capacity weight; and
y g
(d) production options weight
d ti ti i ht
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2005 SIENNA from Sep. '04 Prod. (OM45431U)
05 SIENNA_U (L/O 0409)
Tire related term Meaning
68 kg (150 lb.) times the number of occupants specified in the second
Normal occupant weight
column of Table 1 that follows
distribution of occupants in a vehicle as specified in the third column of Table
Occupant distribution
1 that follows
the combined weight of those installed regular production options weighing
over 2.3 kg (5 lb.) in excess of those standard items which they replace,
Production options weight not previously considered in curb weight or accessory weight, including
heavy duty brakes, ride levelers, roof rack, heavy duty battery, and special
trim
Recommended inflation pressure cold tire inflation pressure recommended by a manufacturer
a metal support for a tire or a tire and tube assembly upon which the tire beads
Rim
are seated
Rim diameter (Wheel diameter) nominal diameter of the bead seat
Rim size designation rim diameter and width
Rim type designation the industry of manufacturer's designation for a rim by style or code
Rim width nominal distance between rim flanges
Vehicle capacity weight the rated cargo and luggage load plus 68 kg (150 lb.) times the vehicle's desig-
(Total load capacity) nated seating capacity
the load on an individual tire that is determined by distributing to each axle
Vehicle maximum load on the tire
its share of the maximum loaded vehicle weight and dividing by two
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2005 SIENNA from Sep. '04 Prod. (OM45431U)
05 SIENNA_U (L/O 0409)
Tire related term Meaning
the load on an individual tire that is determined by distributing to each axle
Vehicle normal load on the tire its share of the curb weight, accessory weight, and normal occupant weight
(distributed in accordance with Table 1 that follows) and dividing by two
Weather side the surface area of the rim not covered by the inflated tire
Table 1--Occupant loading and distribution for vehicle normal load for various designated seating capacities
Designated seating capacity, Vehicle normal load, number of Occupant distribution in a normally
number of occupants occupants loaded vehicle
2 through 4 2 2 in front
5 through 10 3 2 in front, 1 in second seat
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2005 SIENNA from Sep. '04 Prod. (OM45431U)
05 SIENNA_U (L/O 0409)
Vehicle load limits
Vehicle load limits include total load
NOTICE CAUTION
capacity, seating capacity, towing ca-
pacity and cargo capacity. Follow the Even if the number of occupants
load limits shown below. are within the seating capacity, Do not apply the load more than
each load limit. That may cause
Total load capacity: do not exceed the total load ca-
not only damage to the tires, but
538 kg (1185 Ib.) pacity.
also deterioration to the steering
Total load capacity means com- ability and braking ability, which
bined weight of occupants, cargo Towing capacity: may cause an accident.
and luggage. Tongue load is in- Without towing package
cluded when trailer towing. 907 kg (2000 Ib.)
Seating capacity: With towing package
7- passenger models-- 1587 kg (3500 Ib.)
Total 7 (Front 2, Rear 5) Towing capacity means the maxi-
8- passenger models-- mum gross trailer weight (trailer
Total 8 (Front 2, Rear 6) weight plus its cargo weight) that
Seating capacity means the maxi- your vehicle is able to tow.
mum number of occupants whose Cargo capacity
estimated average weight is 68 kg Cargo capacity may increase or de-
(150 lb.) per person. Depending on crease depending on the size (weight)
the weight of each person, the seat- and the number of occupants. For de-
ing capacity given may exceed the tails, see "Capacity and distribution"
total load capacity. that follows.
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Cargo and luggage--
--Stowage precautions --Capacity and distribution
When stowing cargo and luggage in Cargo capacity depends on the to-
the vehicle, observe the following: D Never allow anyone to ride in tal weight of the occupants.
the luggage compartment. It is
D Put cargo and luggage in the lug- not designed for passengers. (Cargo capacity) = (Total load capac-
gage compartment when at all They should ride in their seats ity) ◦ Jabse Service Manual Search 2026 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo