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Toyota Highlander Hybrid (2018 year). Instruction - part 31

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7-3. Do-it-yourself maintenance

Engine oil

With the engine at operating temperature and turned off, check the oil

level on the dipstick.

■ Checking the engine oil

Park the vehicle on level ground. After warming up the engine

1

and turning off the hybrid system, wait more than 5 minutes for

the oil to drain back into the bottom of the

engine.

2

Holding a rag under the end,

pull the dipstick out.

3

Wipe the dipstick clean.

4

Reinsert the dipstick fully.

5

Holding a rag under the end,

pull the dipstick out and

check the oil level.

1

Low

2

Normal

3

Excessive

Wipe the dipstick and reinsert it fully.

6

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■ Adding engine oil

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

→P. 642

Oil quantity

1.9 qt. (1.8 L, 1.6 Imp. qt.)

(Low → Full)

Items

Clean funnel

1

Remove the oil filler cap by turning it counterclockwise.

2

Add engine oil slowly, checking the dipstick.

3

Install the oil filler cap by turning it clockwise.

■Engine oil consumption

A certain amount of engine oil will be consumed while driving. In the following

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situations, oil consumption may increase, and engine oil may need to be

refilled in between oil maintenance intervals.

● When the engine is new, for example directly after purchasing the vehicle or

after replacing the engine

● If low quality oil or oil of an inappropriate viscosity is used

● When driving at high engine speeds or with a heavy load, when towing, or

when driving while accelerating or decelerating frequently

● When leaving the engine idling for a long time, or when driving frequently

through heavy traffic

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7-3. Do-it-yourself maintenance

WARNING

■ 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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Coolant

The coolant level is satisfactory if it is between the “FULL” and “LOW”

lines on the reservoir when the hybrid system is cold.

 Engine coolant reservoir

1

Reservoir cap

2

“FULL” line

3

“LOW” line

If the level is on or below the

“LOW” line, add coolant up to the

“FULL” line.

 Power control unit coolant reservoir

1

Reservoir cap

2

“FULL” line

3

“LOW” line

If the level is on or below the

“LOW” line, add coolant up to the

“FULL” line.

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■ Coolant selection

Only use “Toyota Super Long Life Coolant” or a 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% deion-

ized water. (Minimum temperature: -31°F [-35°C])

Canada:

“Toyota Super Long Life Coolant” is a mixture of 55% coolant and 45% deion-

ized water. (Minimum temperature: -44°F [-42°C])

For more details about coolant, contact your Toyota dealer.

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

Visually check the radiator, hoses, engine/power control unit 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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7-3. Do-it-yourself maintenance

WARNING

■ When the hybrid system is hot

Do not remove the engine/power control unit coolant reservoir caps.

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.

Radiator and condenser

Check the radiator and condenser and clear away any foreign objects.

If any of the above parts is extremely dirty or you are not sure of their

condition, have your vehicle inspected by your Toyota dealer.

WARNING

■ When the hybrid system is hot

Do not touch the radiator or condenser as they may be hot and cause seri-

ous injuries, such as burns.

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Brake fluid

■ Checking fluid level

The brake fluid level should be

between the “MAX” and “MIN”

lines on the tank.

■ Adding fluid

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

Fluid type

FMVSS No.116 DOT 3 or SAE J1703 brake fluid

Item

Clean funnel

■ Brake fluid can absorb moisture from the air

Excess moisture in the brake fluid can cause a dangerous loss of braking effi-

ciency. Use only newly opened brake fluid.

WARNING

■ When filling the reservoir

Take care as brake fluid can harm your hands and eyes and damage

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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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7-3. Do-it-yourself maintenance

Washer fluid

If any washer does not work or the

warning message appears on the

multi-information display,

the

washer tank may be empty. Add

washer fluid.

WARNING

■ When adding washer fluid

Do not add washer fluid when the hybrid system is hot or operating 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, as well as

damaging the pump leading to problems of the washer fluid not spraying.

■ Diluting washer fluid

Dilute washer fluid with water as necessary.

Refer to the freezing temperatures listed on the label of the washer fluid bot-

tle.

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12-volt battery

■ Location

The 12-volt battery is located in

the left-hand side of luggage

compartment.

■ Before removing the 12-volt battery cover

Remove the center deck board.

■ Removing the 12-volt battery cover

1

Remove the side deck board.

7

2

Remove the 12-volt battery

cover.

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7-3. Do-it-yourself maintenance

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Remove the clamp cover.

■ Exterior

Make sure that the 12-volt battery terminals are not corroded and

that there are no loose connections, cracks, or loose clamps.

1

Terminals

2

Hold-down clamp

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■ Installing the 12-volt battery cover

1

Install the clamp cover.

2

Install the

12-volt battery

cover.

3

Install the side deck board.

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■ Before recharging

When recharging, the 12-volt battery produces hydrogen gas which is flam-

mable and explosive. Therefore, before recharging:

● If recharging with the 12-volt battery installed on the vehicle, be sure to dis-

connect the ground cable.

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

connecting the charger cables to the 12-volt battery.

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7-3. Do-it-yourself maintenance

■ After recharging/reconnecting the 12-volt battery

● The hybrid system may not start. Follow the procedure below to initialize the

system.

1

Shift the shift lever to P.

2

Open and close any of the doors.

3

Restart the hybrid system.

● Unlocking the doors using the smart key system may not be possible imme-

diately after reconnecting the 12-volt battery. If this happens, use the wire-

less remote control or the mechanical key to lock/unlock the doors.

● Start the hybrid system with the power switch in ACCESSORY mode. The

hybrid system may not start with the power switch turned off. However, the

hybrid system will operate normally from the second attempt.

● The power switch mode is recorded by the vehicle. If the 12-volt battery is

disconnected and reconnected, the vehicle will return the power switch

mode to the status it was in before the 12-volt battery was disconnected.

Make sure to turn off the power switch before disconnecting the 12-volt bat-

tery. Take extra care when connecting the 12-volt battery if the power switch

mode prior to the battery being disconnected is unknown.

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

dealer.

WARNING

■ Chemicals in the 12-volt battery

The 12-volt battery contains 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 12-volt battery:

● Do not cause sparks by touching the 12-volt battery terminals with tools.

● Do not smoke or light a match near the 12-volt battery.

● Avoid contact with eyes, skin and clothes.

● Never inhale or swallow electrolyte.

● Wear protective safety glasses when working near the 12-volt battery.

● Keep children away from the 12-volt battery.

■ Where to safely charge the 12-volt battery

Always charge the 12-volt battery in an open area. Do not charge the 12-

volt battery in a garage or closed room where there is not sufficient ventila-

tion.

■ How to recharge the 12-volt battery

Only perform a slow charge (5 A or less). The 12-volt battery may explode if

charged at a quicker rate.

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WARNING

■ 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.

■ When replacing the 12-volt battery

Use a 12-volt battery designed for the vehicle. Failure to do so may cause

gas (hydrogen) to enter the passenger compartment, causing a fire or

explosion.

For replacement of the 12-volt battery, contact your Toyota dealer.

NOTICE

■When recharging the 12-volt battery

Never recharge the 12-volt battery while the hybrid system is operating.

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Also, be sure all accessories are turned off.

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7-3. Do-it-yourself maintenance

Tires

Replace or rotate tires in accordance with maintenance sched-

ules and treadwear.

Checking tires

Check if the treadwear indicators are showing on the tires. Also check

the tires for uneven wear, such as excessive wear on one side of the

tread.

Check the spare tire condition and pressure if not rotated.

1

New tread

2

Worn tread

3

Treadwear indicator

The location of treadwear indicators is shown by a “TWI” or “Δ” mark,

etc., molded into the sidewall of each tire.

Replace the tires if the treadwear indicators

are showing on a tire.

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Tire rotation

Rotate the tires in the order shown.

 Vehicles with compact spare

 Vehicles with full-size spare

tire

tire

Front

Front

Do not fail to initialize the tire pressure warning system after tire rota-

tion.

To equalize tire wear and extend tire life, Toyota recommends that tire

rotation is carried out at the same interval as tire inspection.

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■ How to initialize the tire pressure warning system

Park the vehicle in a safe place and turn the power switch to off.

1

Initialization cannot be performed while the vehicle is moving.

Adjust the tire inflation pressure to the specified cold tire inflation

2

pressure level. (→P. 646)

Make sure to adjust the tire pressure to the specified cold tire infla-

tion pressure level. The tire pressure warning system will operate

based on this pressure level.

3

Turn the power switch to the ON mode.

4

Press and hold the tire pres-

sure warning reset switch

until the tire pressure warn-

ing light blinks slowly 3 times.

5

Wait for a few minutes with the power switch in ON mode and

then turn the power switch off.

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7-3. Do-it-yourself maintenance

◆ 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:

●The treadwear indicators are showing on a tire.

● 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 reg-

istered, the tire pressure warning system will not work properly. After driv-

ing for about 20 minutes, the tire pressure warning light blinks for 1

minute and stays on to indicate a system malfunction.

■ 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.

■Proper storage of the spare tire

As an improperly stored spare tire may cause damage to the wire cable

that holds it, check that the spare tire is stored properly on a daily basis.

●If the stored spare tire is slanted or

causes a rattle while driving, properly

store the spare tire by following the

tire change procedure correctly

(→P. 596).

• If the spare tire is slanted, the hoist assembly may be stuck in the

wheel opening. If the spare tire rattles while driving, it may not be fully

raised. Lower the spare tire to the ground and make sure that the

hoist assembly is perpendicular to the wheel opening.

• Raise the tire slowly and steadily until a click is heard and the jack

handle skips.

• If the spare tire cannot be lowered, the wire cable may be severed.

Have the vehicle inspected at your Toyota dealer.

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