2012 Toyota Sienna Owners Manual

STEP 5

Wipe the dipstick clean. Reinsert the dipstick fully. Holding a rag under the end, pull the dipstick out and check the oil level.

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STEP 6

Wipe the dipstick and reinsert it fully.

1AR-FE engine

Low Full

2GR-FE engine

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■ Adding engine oil

4-3. Do-it-yourself maintenance

If the oil level is below or near the low level mark, add engine oil of the same type as that already in the engine.

Make sure to check the oil type and prepare the items needed before adding oil.

Engine oil selection Oil quantity (Low→Full)

→P. 788

1.6 qt. (1.5 L, 1.3 Imp.qt.)

Items

Clean funnel

STEP 1

STEP 2

STEP 3

Remove the oil filler cap by turning it counterclockwise. Add engine oil slowly, checking the dipstick. Install the oil filler cap by turning it clockwise.

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■Engine oil consumption

●The amount of engine oil consumed depends on the oil viscosity, the

quality of the oil and the way the vehicle is driven.

●More oil is consumed under driving conditions such as high speeds and

frequent acceleration and deceleration.

●A new engine consumes more oil. ●When judging the amount of oil consumption, keep in mind that the oil may have become diluted, making it difficult to judge the true level accu- rately.

●Oil consumption: Max. 1.1 qt./600 miles, 0.9 Imp.qt./600 miles (1.0 L per

1000 km)

●If your vehicle consumes more than 1.1 qt. (1.0 L, 0.9 Imp.qt.) every

600 miles (1000 km), contact your Toyota dealer.

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CAUTION

■Used engine oil

●Used engine oil contains potentially harmful contaminants which may cause skin disorders such as inflammation and skin cancer, so care should be taken to avoid prolonged and repeated contact. To remove used engine oil from your skin, wash thoroughly with soap and water.

●Dispose of used oil and filters only in a safe and acceptable manner. Do not dispose of used oil and filters in household trash, in sewers or onto the ground. Call your Toyota dealer, service station or auto parts store for information concerning recycling or disposal.

●Do not leave used engine oil within the reach of children.

NOTICE

■To prevent serious engine damage Check the oil level on a regular basis.

■When replacing the engine oil

●Be careful not to spill engine oil on the vehicle components. ●Avoid overfilling, or the engine could be damaged. ●Check the oil level on the dipstick every time you refill the vehicle. ●Be sure the engine oil filler cap is properly tightened.

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Engine coolant

The coolant level is satisfactory if it is between the “FULL” and “LOW” lines on the reservoir when the engine is cold.

Reservoir cap “FULL” “LOW” If the level is on or below the “LOW” line, add coolant up to the “FULL” line.

■Coolant selection

Only use “Toyota Super Long Life Coolant” or similar high quality ethylene glycol based non-silicate, non-amine, non-nitrite, and non-borate coolant with long-life hybrid organic acid technology.

U.S.A.:

“Toyota Super Long Life Coolant” is a mixture of 50 % coolant and 50 % deionized water. (Minimum temperature: -31°F [-35°C])

Canada: “Toyota Super Long Life Coolant” is a mixture of 55 % coolant

and 45 % deionized water. (Minimum temperature: -44°F [-42°C])

For more details about engine coolant, contact your Toyota dealer.

■If the coolant level drops within a short time of replenishing

Visually check the radiator, hoses, engine coolant reservoir caps drain cock and water pump. If you cannot find a leak, have your Toyota dealer test the cap and check for leaks in the cooling system.

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CAUTION

■When the engine is hot

Do not remove the engine coolant reservoir cap. The cooling system may be under pressure and may spray hot coolant if the cap is removed, causing serious injuries, such as burns.

NOTICE

■When adding coolant

Coolant is neither plain water nor straight antifreeze. The correct mixture of water and antifreeze must be used to provide proper lubrication, corrosion protection and cooling. Be sure to read the antifreeze or coolant label.

■If you spill coolant

Be sure to wash it off with water to prevent it from damaging parts or paint.

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Radiator and condenser

Check the radiator and condenser and clear away any foreign objects. If either of the above parts is extremely dirty or you are not sure of their condition, have your vehicle inspected by your Toyota dealer.

CAUTION

■When the engine is hot

Do not touch the radiator or condenser as they may be hot and cause seri- ous injuries, such as burns.

■When the electric cooling fan is operating

Do not touch the engine compartment. Vehicles without a smart key system: With the engine switch in the “ON” position, the electric cooling fans may automatically start to run if the air con- ditioning is on and/or the coolant temperature is high. Be sure the engine switch is in the “LOCK” position when working near the electric cooling fan or radiator grille. Vehicles with a smart key system: With the “ENGINE START STOP” switch in IGNITION ON mode, the electric cooling fans may automatically start to run if the air conditioning is on and/or the coolant temperature is high. Be sure the “ENGINE START STOP” switch is OFF when working near the elec- tric cooling fans or radiator grille.

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Brake fluid

■ Checking fluid level

4-3. Do-it-yourself maintenance

The brake fluid level should be between the “MAX” and “MIN” lines on the tank.

“MAX” “MIN”

■ Adding fluid

Lift the cover off.

Make sure to check the fluid type and prepare the necessary item.

Fluid type

Item

FMVSS No.116 DOT 3 or SAE J1703 brake fluid Clean funnel

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■Brake fluid can absorb moisture from the air

Excess moisture in the brake fluid can cause a dangerous loss of braking efficiency. Use only newly opened brake fluid.

CAUTION

■When filling the reservoir

Take care as brake fluid can harm your hands and eyes and damage painted surfaces. If fluid gets on your hands or in your eyes, flush the affected area with clean water immediately. If you still experience discomfort, see a doctor.

NOTICE

■If the fluid level is low or high

It is normal for the brake fluid level to go down slightly as the brake pads wear out or when the fluid level in the accumulator is high. If the reservoir needs frequent refilling, there may be a serious problem.

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Battery

Check the battery as follows: ■ Battery exterior

Make sure that the battery terminals are not corroded and that there are no loose connections, cracks, or loose clamps.

Terminals Hold-down clamp

■Before recharging

When recharging, the battery produces hydrogen gas which is flammable and explosive. Therefore, observe the following before recharging: ●If recharging with the battery installed on the vehicle, be sure to discon-

nect the ground cable.

●Make sure the power switch on the charger is off when connecting and

disconnecting the charger cables to the battery.

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■After recharging/reconnecting the battery (vehicles with a smart key

system) ●Unlocking the doors using the smart key system may not be possible immediately after reconnecting the battery. If this happens, use the wire- less remote control or the mechanical key to lock/unlock the doors.

●Start the engine with the “ENGINE START STOP” switch in ACCES- SORY mode. The engine may not start with the “ENGINE START STOP” switch turned OFF. However, the engine will operate normally from the second attempt.

●The “ENGINE START STOP” switch mode is recorded by the vehicle. If the battery is reconnected, the vehicle will return the “ENGINE START STOP” switch mode to the status it was in before the battery was discon- nected. Make sure to turn off the power before disconnecting the battery. Take extra care when connecting the battery if the “ENGINE START STOP” switch mode prior to discharge is unknown.

If the system will not start even after multiple attempts, contact your Toyota dealer.

■Disconnecting the battery (vehicles with an AUTO ACCESS SEAT)

Do not disconnect the battery while operating the AUTO ACCESS SEAT. The AUTO ACCESS SEAT will become inoperable. For details, refer to “AUTO ACCESS SEAT OWNER’S MANUAL”.

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CAUTION

■Chemicals in the battery

Batteries contain poisonous and corrosive sulfuric acid and may produce hydrogen gas which is flammable and explosive. To reduce the risk of death or serious injury, take the following precautions while working on or near the battery: ●Do not cause sparks by touching the battery terminals with tools. ●Do not smoke or light a match near the battery. ●Avoid contact with eyes, skin and clothes. ●Never inhale or swallow electrolyte. ●Wear protective safety glasses when working near the battery. ●Keep children away from the battery.

■Where to safely charge the battery

Always charge the battery in an open area. Do not charge the battery in a garage or closed room where there is insufficient ventilation.

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CAUTION

■How to recharge the battery

Only perform a slow charge (5 A or less). The battery may explode if charged at a quicker rate.

■Emergency measures regarding electrolyte

●If electrolyte gets in your eyes

Flush your eyes with clean water for at least 15 minutes and get immedi- ate medical attention. If possible, continue to apply water with a sponge or cloth while traveling to the nearest medical facility.

●If electrolyte gets on your skin

Wash the affected area thoroughly. If you feel pain or burning, get medical attention immediately.

●If electrolyte gets on your clothes

It can soak through clothing on to your skin. Immediately take off the cloth- ing and follow the procedure above if necessary.

●If you accidentally swallow electrolyte

Drink a large quantity of water or milk. Get emergency medical attention immediately.

NOTICE

■When recharging the battery

Never recharge the battery while the engine is running. Also, be sure all accessories are turned off.

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Washer fluid

4-3. Do-it-yourself maintenance

If any washer does not work or the low washer fluid warning light comes on, the washer tank may be empty. Add washer fluid.

CAUTION

■When refilling washer fluid

Do not refill washer fluid when the engine is hot or running, as washer fluid contains alcohol and may catch fire if spilled on the engine etc.

NOTICE

■Do not use any fluid other than washer fluid

Do not use soapy water or engine antifreeze instead of washer fluid. Doing so may cause streaking on the vehicle’s painted surfaces.

■Diluting washer fluid

Dilute washer fluid with water as necessary. Refer to the freezing temperatures listed on the washer fluid tank.

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4-3. Do-it-yourself maintenance Tires

Replace or rotate tires in accordance with maintenance sched- ules and treadwear. ■ Checking tires

location of

New tread Treadwear indicator Worn tread The treadwear indicators is shown by the “TWI” or “ ” marks, etc., molded on the sidewall of each tire. Vehicles with compact spare tire: check spare tire condi- tion and pressure if not rotated.

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■ Tire rotation Vehicles with a spare tire of a different wheel type from the installed tires

Rotate the tires in the order shown.

To equalize tire wear and extend tire life, Toyota recom- mends that tire rotation is carried out at the same inter- val as tire inspection.

Front

■ Tire pressure warning system

Your vehicle is equipped with a tire pressure warning system that uses tire pressure warning valves and transmitters to detect low tire inflation pressure before serious problems arise. (→P. 733) Vehicles with compact spare tire: The compact spare tire is not equipped with the tire pressure warning valve and transmitters.

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Installing tire pressure warning valves and transmitters

When replacing tires or wheels, tire pressure warning valves and transmitters must also be installed. When new tire pressure warning valves and transmitters are installed, new ID codes must be registered in the tire pressure warn- ing computer and the tire pressure warning system must be initial- ized. Have tire pressure warning valve and transmitter ID codes registered by your Toyota dealer. (→P. 676)

Initializing the tire pressure warning system

When the tire size is changed, the tire pressure warning system must be initialized. When the tire pressure warning system is initialized, the current tire inflation pressure is set as the benchmark pressure. ■ How to initialize the tire pressure warning system STEP 1

Park the vehicle in a safe place and turn the engine switch (vehicles without a smart key system) or the “ENGINE START STOP” switch (vehicles with a smart key system) off. Initialization cannot be performed while the vehicle is moving. Adjust the tire inflation pressure to the specified cold tire infla- tion pressure level. (→P. 794) Make sure to adjust the tire pressure to the specified cold tire inflation pressure level. The tire pressure warning system will operate based on this pressure level.

STEP 2

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STEP 3

STEP 4

Turn the engine switch to the “ON” position (vehicles without a smart key system) or “ENGINE START STOP” switch to IGNI- TION ON mode (vehicles with a smart key system).

Press and hold the tire pressure warning reset switch until the tire pressure warning light blinks slowly 3 times.

STEP 5

Vehicles without a smart key system: Wait for a few minutes with the engine switch in the “ON” position and then turn the engine switch to the “ACC” or “LOCK” position. Vehicles with a smart key system: Wait for a few minutes with the “ENGINE START STOP” switch in IGNITION ON mode and then turn the “ENGINE START STOP” switch off.

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Registering ID codes

The tire pressure warning valve and transmitter is equipped with a unique ID code. When replacing a tire pressure warning valve and transmitter, it is necessary to register the ID code. Have the ID code registered by your Toyota dealer.

■When to replace your vehicle’s tires

Tires should be replaced if: ●You have tire damage such as cuts, splits, cracks deep enough to

expose the fabric, and bulges indicating internal damage

●A tire goes flat repeatedly or cannot be properly repaired due to the

size or location of a cut or other damage

If you are not sure, consult with your Toyota dealer.

■Replacing tires and wheels

If the ID code of the tire pressure warning valve and transmitter is not registered, the tire pressure warning system will not work properly. After driving for about 20 minutes, the tire pressure warning light blinks for 1 minute and stays on to indicate a system malfunction.

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■Tire life

Any tire over 6 years old must be checked by a qualified technician even if it has seldom or never been used or damage is not obvious.

■Routine tire inflation pressure checks

The tire pressure warning system does not replace routine tire inflation pressure checks. Make sure to check tire inflation pressure as part of your routine of daily vehicle checks.

■Maximum load of tire

Check that the number given by dividing the maximum load by 1.10 of the replacement tire is greater than 1/2 of the Gross Axle Weight Ratings (GAWR) of either the front axle or the rear axle, whichever is greater.

For the GAWR, see the Certification Label. For the maximum load of the tire, see the load limit at maximum cold tire inflation pressure mentioned on the sidewall of the tire. (→P. 801)

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■Tire types

1 Summer tires

Summer tires are high-speed performance tires best suited to highway driving under dry conditions. Since summer tires do not have the same traction performance as snow tires, summer tires are inadequate for driving on snow-covered or icy roads. For driving on snow-covered roads or icy roads, the use of snow tires is recommended. When installing snow tires, be sure to replace all four tires.

2 All season tires

All season tires are designed to provide better traction in snow and to be adequate for driving in most winter conditions, as well as for use year round. All season tires, however, do not have adequate traction performance compared with snow tires in heavy or loose snow. Also, all season tires fall short in acceleration and handling performance compared with summer tires in highway driving.

3 Snow tires

For driving on snow-covered roads or icy roads, we recommend using snow tires. If you need snow tires, select tires of the same size, con- struction and load capacity as the originally installed tires. Since your vehicle has radial tires as original equipment, make sure your snow tires also have radial construction. Do not install studded tires without first checking local regulations for possible restriction. Snow tires should be installed on all wheels. (→P. 352)

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■Initializing the tire pressure warning system

Initialize the system with the tire inflation pressure adjusted to the speci- fied level.

■If the tread on snow tires wears down below 0.16 in. (4 mm)

The effectiveness of the tires as snow tires is lost.

■If you press the tire pressure warning reset switch accidentally

If initialization is performed, adjust the tire inflation pressure to the speci- fied level and initialize the tire pressure warning system again.

■When the initialization of the tire pressure warning system has

failed Initialization can be completed in a few minutes. However, in the follow- ing cases, the settings has not been recorded and the system will not operate properly. If repeated attempts to record tire inflation pressure settings are unsuccessful, have the vehicle inspected by your Toyota dealer. ●When operating the tire pressure warning reset switch, the tire pres-

sure warning light does not blink 3 times.

●After driving for a certain period of time since the initialization has been completed, the warning light comes on after blinking for 1
minute.

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■Tire pressure warning system certification

FCC ID:GQ4-45T FCC ID:GQ4-32T FCC ID:GQ4-37R For vehicles sold in the U.S.A. NOTE: This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. FCC WARNING: Changes or modifications not expressly approved by the party responsi- ble for compliance could void the user’s authority to operate the equip- ment. For vehicles sold in Canada NOTE: Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device.

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CAUTION

■When inspecting or replacing tires

Observe the following precautions to prevent accidents. Failure to do so may cause damage to parts of the drive train, as well as dangerous han- dling characteristics, which may lead to an accident resulting in death or serious injury. ●Do not mix tires of different makes, models or tread patterns.

Also, do not mix tires of remarkably different treadwear.

●Do not use tire sizes other than those recommended by Toyota. ●Do not mix differently constructed tires (radial, bias-belted or bias-ply

tires).

●Do not mix summer, all season and snow tires. ●Do not use tires that have been used on another vehicle.

Do not use tires if you do not know how they were used previously.

●Do not tow if your vehicle has a compact spare tire installed.

■When initializing the tire pressure warning system

Do not operate the tire pressure warning reset switch without first adjust- ing the tire inflation pressure to the specified level. Otherwise, the tire pressure warning light may not come on even if the tire inflation pressure is low, or it may come on when the tire inflation pressure is actually nor- mal.

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NOTICE

■Repairing or replacing tires, wheels, tire pressure warning valves,

transmitters and tire valve caps ●When removing or fitting the wheels, tires or the tire pressure warning valves and transmitters, contact your Toyota dealer as the tire pres- sure warning valves and transmitters may be damaged if not handled correctly.

●When replacing tire valve caps, do not use tire valve caps other than

those specified. The cap may become stuck.

■To avoid damage to the tire pressure warning valves and transmit-

ters When a tire is repaired with liquid sealants, the tire pressure warning valve and transmitter may not operate properly. If a liquid sealant is used, contact your Toyota dealer or other qualified service shop as soon as possible. Make sure to replace the tire pressure warning valve and transmitter when replacing the tire. (→P. 674)

■Driving on rough roads

Take particular care when driving on roads with loose surfaces or pot- holes. These conditions may cause losses in tire inflation pressure, reducing the cushioning ability of the tires. In addition, driving on rough roads may cause damage to the tires themselves, as well as the vehicle’s wheels and body.

■If tire inflation pressure of each tire becomes low while driving Do not continue driving, or your tires and/or wheels may be ruined.

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4-3. Do-it-yourself maintenance Tire inflation pressure

■ Tire inflation pressure

The recommended cold tire inflation pressure and tire size are displayed on the tire and loading information label. (→P. 794)

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■ Inspection and adjustment procedure

Tire valve Tire pressure gauge

STEP 1

STEP 2

STEP 3

STEP 4

STEP 5

STEP 6

Remove the tire valve cap. Press the tip of the tire pressure gauge onto the tire valve. Read the pressure using the gauge gradations. If the tire inflation pressure is not at the recommended lev- els, adjust the pressure. If you add too much air, press the center of the valve to deflate. After completing the tire inflation pressure measurement and adjustment, apply soapy water to the valve and check for leakage. Put the tire valve cap back on.

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■Tire inflation pressure check interval

You should check tire inflation pressure every two weeks, or at least once a month. Do not forget to check the spare.

■Effects of incorrect tire inflation pressure

Driving with incorrect tire inflation pressure may result in the following: ●Reduced fuel efficiency ●Reduced driving comfort and tire life ●Reduced safety ●Damage to the drive train If a tire needs frequent refilling, have it checked by your Toyota dealer.

■Instructions for checking tire inflation pressure

When checking tire inflation pressure, observe the following: ●Check only when the tires are cold.

If your vehicle has been parked for at least 3 hours or has not been driven for more than 1 mile or 1.5 km, you will get an accurate cold tire inflation pressure reading.

●Always use a tire pressure gauge.

The appearance of the tire can be misleading. In addition, tire infla- tion pressure that is even just a few pounds off can affect ride quality and handling.

●Do not reduce tire inflation pressure after driving. It is normal for tire

inflation pressure to be higher after driving. ●Never exceed the vehicle capacity weight.

Passengers and luggage weight should be placed so that the vehicle is balanced.

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CAUTION

■Proper inflation is critical to save tire performance

Keep your tires properly inflated. Otherwise, the following conditions may occur and result in an accident causing death or serious injury. ●Excessive wear ●Uneven wear ●Poor handling ●Possibility of blowouts resulting from overheated tires ●Poor sealing of the tire bead ●Wheel deformation and/or tire separation ●A greater possibility of tire damage from road hazards

NOTICE

■When inspecting and adjusting tire inflation pressure

Be sure to put the tire valve caps back on. Without the valve caps, dirt or moisture could get into the valve and cause air leakage, which could result in an accident. If the caps are lost, replace them as soon as possible.

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4-3. Do-it-yourself maintenance Wheels

If a wheel is bent, cracked or heavily corroded, it should be replaced. Otherwise, the tire may separate from the wheel or cause a loss of handling control. ■ Wheel selection

When replacing wheels, care should be taken to ensure that they are equivalent to those removed in load capacity, diameter, rim width and inset*. Replacement wheels are available at your Toyota dealer. *: Conventionally referred to as “offset”. Toyota does not recommend using the following: ● Wheels of different sizes or types ● Used wheels ● Bent wheels that have been straightened

■ Aluminum wheel precautions

● Use only Toyota wheel nuts and wrenches designed for use

with your aluminum wheels.

● When rotating, repairing or changing your tires, check that the

wheel nuts are still tight after driving 1000 miles (1600 km).

● Be careful not to damage the aluminum wheels when using

tire chains.

● Use only Toyota genuine balance weights or equivalent and use a plastic or rubber hammer when balancing your wheels.

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■When replacing wheels

The wheels of your vehicle are equipped with tire pressure warning valves and transmitters that allow the tire pressure warning system to provide advanced warning in the event of a loss in tire inflation pressure. Whenever wheels are replaced, tire pressure warning valves and trans- mitters must be installed. (→P. 674)

CAUTION

■When replacing wheels

●Do not use wheels that are a different size from those recommended in

the Owner’s Manual, as this may result in a loss of handling control.

●Never use an inner tube in a leaking wheel which is designed for a tubeless tire. Doing so may result in an accident, causing death or seri- ous injury.

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CAUTION

■When installing the wheel nuts

Tapered portion

facing

tapered ends

●Be sure to install the wheel nuts with the inward. Installing the nuts with the tapered ends facing outward can cause the wheel to break and eventually cause the wheel to come off while driving, which could lead to an accident resulting in death or serious injury.

●Never use oil or grease on the wheel bolts or wheel nuts.

Oil and grease may cause the wheel nuts to be excessively tightened, leading to bolt or disc wheel damage. In addition, the oil or grease can cause the wheel nuts to loosen and the wheel may fall off, causing an accident and resulting in death or serious injury. Remove any oil or grease from the wheel bolts or wheel nuts.

NOTICE

■Replacing tire pressure warning valves and transmitters

●Because tire repair or replacement may affect the tire pressure warning valves and transmitters, make sure to have tires serviced by your Toyota dealer or other qualified service shop. In addition, make sure to purchase your tire pressure warning valves and transmitters at your Toyota dealer.

●Ensure that only genuine Toyota wheels are used on your vehicle.

Tire pressure warning valves and transmitters may not work properly with non-genuine wheels.

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4-3. Do-it-yourself maintenance Air conditioning filter

The air conditioning filter must be cleaned or changed regularly to maintain air conditioning efficiency. ■ Removal method STEP 1

Turn the engine switch (vehicles without a smart key sys- tem) or “ENGINE START STOP” switch (vehicles with a smart key system) off.

STEP 2

STEP 3

Open the glove box. Slide off the damper.

Push in each side of the glove box to disconnect the claws.

STEP 4

Remove the filter cover.

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STEP 5

Remove the filter.

The “↑UP” marks shown on the filter should be pointing up.

■ Cleaning method

If the filter is dirty, clean by air blowing through the underside.

compressed from

filter

the

Hold the air gun 2 in. (5 cm) from the filter and blow for approximately 2 minutes at 72 psi (500 kPa, 5.0 kgf/cm2 or bar). If an air gun is not available, have the filter cleaned by your Toyota dealer.

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■Checking interval

Inspect, clean and replace the air conditioning filter according to the mainte- nance schedule. In dusty areas or areas with heavy traffic flow, more fre- quent cleaning or early replacement may be required. (For scheduled maintenance information, please refer to the “Scheduled Maintenance Guide” or “Owner’s Manual Supplement”.)

■If air flow from the vents decreases dramatically

The filter may be clogged. Check the filter and replace it if necessary.

NOTICE

■To prevent damage to the system

●When using the air conditioning system, make sure that a filter is always

installed.

●When cleaning the filter, do not clean with water.

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4-3. Do-it-yourself maintenance Wireless remote control/electronic key battery

Replace the battery with a new one if it is discharged. ■ You will need the following items:

● Flathead screwdriver ● Lithium battery CR2032

■ Replacing the battery (vehicles without a smart key system) Remove the cover using a STEP 1
coin protected with tape etc.

STEP 2

Remove the discharged trans- mitter battery.

Insert a new battery with the “+” terminal facing up.

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■ Replacing the battery (vehicles with a smart key system) STEP 1

Take out the mechanical key.

STEP 2

Remove the cover.

To prevent damage to the key, cover the tip of the screwdriver with a rag.

STEP 3

Remove the depleted battery. Insert a new battery with the “+” terminal facing up.

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■Use a CR2032 lithium battery

●Batteries can be purchased at your Toyota dealer, local electrical appli-

ance shops or camera stores.

●Replace only with the same or equivalent type recommended by the

manufacturer.

●Dispose of used batteries according to local laws.

■If the key battery is depleted

The following symptoms may occur. ●The smart key system (if equipped) and wireless remote control will not

function properly.

●The operational range will be reduced.

CAUTION

■Removed battery and other parts

Keep away from children. These parts are small and if swallowed by a child, they can cause choking. Failure to do so could result in death or serious injury.

NOTICE

■For normal operation after replacing the battery

Observe the following precautions to prevent accidents. ●Always work with dry hands.

Moisture may cause the battery to rust.

●Do not touch or move any other components inside the remote control. ●Do not bend either of the battery terminals.

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4-3. Do-it-yourself maintenance Checking and replacing fuses

If any of the electrical components do not operate, a fuse may have blown. If this happens, check and replace the fuses as necessary.

STEP 1

STEP 2

Vehicles without a smart key system Turn the engine switch off. Vehicles with a smart key system Turn the “ENGINE START STOP” switch OFF. Open the fuse box cover.

Engine compartment

Push the tab in and lift the lid off.

Driver’s side instrument panel

Remove the lid.

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STEP 3

STEP 4

After a system failure, see “Fuse layout and amperage rat- ings” (→P. 699) for details about which fuse to check. Take out the pullout tool.

Only type A fuses can be removed using the pullout tool.

STEP 5

Check if the fuse has blown.

Type A

Type B

Normal fuse Blown fuse Replace the blown fuse with a new fuse of an appropriate amperage rating. The amper- age rating can be found on the fuse box lid.

Normal fuse Blown fuse Replace the blown fuse with a new fuse of an appropriate amperage rating. The amper- age rating can be found on the fuse box lid.

ITY42C012

ITY42C013

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Type C

Type D

Type E

Normal fuse Blown fuse Contact your Toyota dealer.

Normal fuse Blown fuse Contact your Toyota dealer.

Normal fuse Blown fuse Contact your Toyota dealer.

698

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Fuse layout and amperage ratings

■ Engine compartment

Fuse

H-LP LVL*1

Ampere 7.5 A

DSS1

ST NO.2

H-LP LH*1
H-LP RH*1

7.5 A

7.5 A

20 A 20 A

Circuit

Headlight leveling system PCS (Pre-collision system), dynamic radar cruise control sys- tem Starting system, multiport fuel injection system/sequential multi- port fuel injection system Left-hand headlight (low beam) Right-hand headlight (low beam)

SIENNA_U (OM45477U)

699

4-3. Do-it-yourself maintenance

Fuse

Ampere

Circuit

ECT

EFI NO.2

H-LP RH HI H-LP LH HI

10 SPARE 11 SPARE 12 SPARE 13 MG CLT 14
15 PTC HTR

INV

NO.1*2

7.5 A

10 A

10 A 10 A 10 A 15 A 20 A 7.5 A 20 A

50 A

Multiport fuel injection system/ sequential multiport fuel injection system, automatic transaxle Multiport fuel injection system/ sequential multiport fuel injection system Right-hand headlight (high beam) Left-hand headlight (high beam) Spare-fuse Spare-fuse Spare-fuse A/C magnetic clutch Inverter

PTC heater

16 PTC HTR

NO.2*2

17 PTC HTR

NO.3*2
18 A/C RR 19 PBD 20 FOLD SEAT*3
21 HTR 22 PSB*3
23 A/A SEAT

30 A

PTC heater

30 A

40 A 30 A 30 A 50 A 30 A 30 A

PTC heater

Rear air conditioning system Power back door Power third seat Air conditioning system Pre-collision seat belt AUTO ACCESS SEAT

700

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Fuse

Ampere

24 FAN

25 HAZ

26 RSE 27 MIRROR*3

28 AMP

29 VSC NO.2

30 ST

31 P/I

32

H-LP MAIN*1
SPARE*4

33 AM2*5

34 VSC NO.1

60 A

15 A

15 A

10 A

30 A

30 A

30 A

40 A

40 A 30 A

30 A

50 A

Circuit Electric cooling fans Turn signal lights, gauges and meters Rear seat entertainment system Outside rear view mirror control, outside rear view mirror heaters Audio system Vehicle dynamics integrated man- agement, ABS, vehicle stability control Starting system Horn, left-hand headlight (low beam), right-hand headlight (low beam) Discharge headlight Spare-fuse “ST NO.2”, “GAUGE NO.2” and “IG2” fuses Vehicle dynamics integrated man- agement, ABS, vehicle stability control

SIENNA_U (OM45477U)

701

4-3. Do-it-yourself maintenance

Fuse

Ampere

Circuit

35 ALT

140 A

36 RAD NO.1

15 A

37 DOME

7.5 A

38 ECU-B

10 A

39 ETCS

40 A/F

41 STRG LOCK*6
42 ALT-S

10 A

20 A

20 A 7.5 A

Charging system, horn, left-hand headlight (low beam), right-hand headlight (low beam), fog light, out- side rear view mirror heaters, rear window defoggers, windshield wiper de-icer Audio system Vanity lights, personal/interior lights, personal lights, engine switch light, rear ceiling lights, door courtesy lights, luggage compart- ment light, gauges and meters, clock Main body ECU, smart key system, wireless remote control, power back door, power sliding door, rear view monitor, multi information dis- play, power window, outside rear view mirror control, steering angle sensor, auto-anti glare inside rear view mirror, AUTO ACCESS SEAT remote control, front passenger occupant classification system Multiport fuel injection system/ sequential multiport fuel injection system Multiport fuel injection system/ sequential multiport fuel injection system Steering lock system Charging system

702

SIENNA_U (OM45477U)

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Fuse

Ampere

Circuit

43

INJ

44 ECU-B NO.2
45 AM2 NO.2*6

46 EFI NO.1

47 SMART*6

48 DRL

49 EPS

25 A

7.5 A

7.5 A

25 A

5 A

30 A

60 A

Multiport fuel injection system/ sequential multiport fuel injection system, “IG NO.2” and “IG2” fuses Air conditioning system Multiplex communication system, starting system Multiport fuel injection system/ sequential multiport fuel injection system, “ECT” and “EFI NO.2” fuses Smart key system Daytime running light system, “H- LP LH (HI)” and “H-LP RH (HI)” fuses Electric power steering

*1: Vehicles with discharge headlights only *2: Vehicles with a 1AR-FE engine only *3: Vehicles with a 2GR-FE engine only *4: Vehicles without discharge headlights only *5: Vehicles without a smart key system only *6: Vehicles with a smart key system only

SIENNA_U (OM45477U)

703

4-3. Do-it-yourself maintenance

■ Under the driver’s side instrument panel

Fuse

P/OUTLET

RAD NO.2

ECU-ACC

CIG

Ampere

15 A

7.5 A

10 A

15 A

5 GAUGE NO.1

10 A

Circuit

Power outlets Audio system, navigation system, rear seat entertainment system Main body ECU, clock, shift lock system, power rear view mirror control, multiplex communication system Power outlets Emergency flashers, back up lights, navigation system, multi information display, automatic tran- saxle, multiport fuel injection sys- tem/sequential multiport fuel injection system, charging system

704

SIENNA_U (OM45477U)

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Fuse

Ampere

Circuit

Multiplex communication system, stop lights, navigation system, vehicle stability control system, Active Torque Control 4WD, intui- tive parking assist, auto anti-glare inside rear view mirror, pre-collision seat belt, outside rear view mirror, seat heater, TPMS, yaw rate & G sensor, steering angle sensor, AUTO ACCESS SEAT, main body ECU Rear power windows (left-side) Power door lock system Power front seat (right-side) Moon roof Rear power windows (right-side) Front power windows (right-side) Power front seat (left-side), driving position memory system Stop lights, ABS, vehicle stability control system, rear combination light, high mounted stop light, auto- matic transaxle, shift lock system, multiplex communication system, power third seat switch, multiport fuel injection system/sequential multiport fuel injection system, trailer lights (stop lights) Front power windows (left-side)