Citroen C4 (2023 year). Manual in english

7-3. Do-it-yourself maintenance

487

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

and turning it off, wait more than 5 minutes for the oil to drain

back into the bottom of the engine.

Remove the sand and dust from around the dipstick.

Holding a rag under the end,

pull the dipstick out.

Wipe the dipstick clean.

Make sure that the inlet of the oil level gauge guide and O-ring of the

dipstick are free from sand and dust.

If the O-ring is damaged, replace it with a new one.

Reinsert the dipstick fully.

Holding a rag under the end,

pull the dipstick out and

check the oil level.

Low

Normal

Excessive

The shape of the dipstick may

differ depending on the type

of vehicle or engine.

Wipe the dipstick and reinsert it fully.

488

7-3. Do-it-yourself maintenance

■ 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. 626

Oil quantity (Low  Full)

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

Items

Clean funnel

Remove the sand and dust from around the oil filler cap.

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.

■Engine oil consumption

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

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 (with

towing hitch), or when driving while accelerating or decelerating frequently

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

through heavy traffic

7-3. Do-it-yourself maintenance

489

■ After changing the engine oil (models for model code destination W*)

The engine oil maintenance data should be reset. Perform the following pro-

cedures:

Switch the display to the trip meter A (P. 130) when the engine switch is

in the “ON” position (vehicles without smart entry & start system) or IGNI-

TION ON mode (vehicles with smart entry & start system).

Turn the engine switch to the “LOCK” position (vehicles without smart entry

& start system) or off (vehicles with smart entry & start system).

While pressing the odometer/trip meter display change button (P. 130),

turn the engine switch to the “ON” position (vehicles without smart entry &

start system) or IGNITION ON mode (vehicles with smart entry & start sys-

tem). (Do not start the engine because reset mode will be canceled.) Con-

tinue to press and hold the button for more than one second after the trip

meter displays “000000”.

*: See “Checking your vehicle’s model” if you are not sure of which model

your vehicle is. (P. 12)

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 any authorized Toyota retailer or Toyota authorized repairer,

or any reliable repairer, 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.

490

7-3. Do-it-yourself maintenance

Coolant

The coolant level is satisfactory if it is between the “F” and “L” lines on

the reservoir when the engine is cold.

■ Engine coolant reservoir

 Gasoline engine

 Diesel engine

Reservoir cap

“L” line

“F” line

If the level is on or below the “L” line, add coolant up to the “F” line.

(P. 608)

■ Intercooler coolant reservoir (if equipped)

Reservoir cap

“F” line

“L” line

If the level is on or below the “L”

line, add coolant up to the “F”

line. (P. 608)

■ 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.

“Toyota Super Long Life Coolant” is a mixture of 50% coolant and 50% deion-

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

For more details about engine coolant, contact any authorized Toyota retailer

or Toyota authorized repairer, or any reliable repairer.

7-3. Do-it-yourself maintenance

491

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

Visually check the radiator, hoses, engine coolant reservoir cap, intercooler

coolant reservoir cap (if equipped), drain cock and water pump. If you cannot

find a leak, have any authorized Toyota retailer or Toyota authorized repairer,

or any reliable repairer test the cap and check for leaks in the cooling system.

WARNING

■ When the engine is hot

Do not remove the radiator cap (if equipped), the engine coolant reservoir

cap or intercooler coolant reservoir cap (if equipped).

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.

■ Notice on coolant quality

Do not use improper coolant. If improper coolant is used, the engine cooling

system may be damaged.

Radiator, condenser and intercooler coolant radiator/intercooler

(if equipped)

Check the radiator, condenser and intercooler coolant radiator/inter-

cooler 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 vehi-

cle inspected by any authorized Toyota retailer or Toyota authorized

repairer, or any reliable repairer.

WARNING

■ When the engine is hot

Do not touch the radiator, condenser or intercooler coolant radiator/inter-

cooler as they may be hot and cause serious injuries, such as burns.

492

7-3. Do-it-yourself maintenance

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

■ Checking battery fluid (vehicles with maintenance type bat-

tery)

If there are lines on the side of the battery:

Check that the level is between the upper and lower lines.

Upper line

Lower line

If the fluid level is at or below the

lower line, add distilled water.

7-3. Do-it-yourself maintenance

493

If there are not lines on the side of the battery:

Check the fluid level as follows.

Remove the vent plug.

Check the fluid level by look-

Low

O.K.

ing directly at the cell.

If the fluid level is low, add dis-

tilled water.

Put the vent plug back on and close it securely.

■ Adding distilled water (vehicles with maintenance type bat-

tery)

Remove the vent plug.

Add distilled water.

Put the vent plug back on and close it securely.

■ 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 disconnect

the ground cable.

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

connecting the charger cables to the battery.

494

7-3. Do-it-yourself maintenance

■ After recharging/reconnecting the battery (vehicles with smart entry &

start system)

 Vehicles with automatic transmission

● Unlocking the doors using the smart entry & start system may not be possi-

ble 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 switch in ACCESSORY mode. The engine

may not start with the engine switch turned off. However, the engine will

operate normally from the second attempt.

● The engine switch mode is recorded by the vehicle. If the battery is recon-

nected, the vehicle will return the engine switch mode to the status it was in

before the battery was disconnected. Make sure to turn off the engine

before disconnect the battery. Take extra care when connecting the battery

if the engine switch mode prior to discharge is unknown.

If the system will not start even after multiple attempts, contact any authorized

Toyota retailer or Toyota authorized repairer, or any reliable repairer.

 Vehicles with manual transmission

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

Depress the brake pedal with the shift lever in N.

Open and close any of the doors.

Restart the engine.

● Unlocking the doors using the smart entry & start system may not be possi-

ble 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 switch in ACCESSORY mode. The engine

may not start with the engine switch turned off. However, the engine will

operate normally from the second attempt.

● The engine switch mode is recorded by the vehicle. If the battery is recon-

nected, the vehicle will return the engine switch mode to the status it was in

before the battery was disconnected. Make sure to turn off the engine

before disconnect the battery. Take extra care when connecting the battery

if the engine switch mode prior to discharge is unknown.

If the system will not start even after multiple attempts, contact any authorized

Toyota retailer or Toyota authorized repairer, or any reliable repairer.

■ If a symbol of a battery is shown on the multi-information display

There is a malfunction in the vehicle’s charging system.

Immediately stop the vehicle in a safe place and contact any authorized

Toyota retailer or Toyota authorized repairer, or any reliable repairer. Continu-

ing to drive the vehicle may be dangerous.

7-3. Do-it-yourself maintenance

495

WARNING

■ 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.

■ How to recharge the battery (vehicles with maintenance-free type bat-

tery)

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.

●When there is insufficient battery fluid

Do not use if there is insufficient fluid in the battery. There is a possible

danger that the battery may explode.

■ When disconnecting the battery

Do not disconnect the negative (-) terminal on the body. The disconnected

negative (-) terminal may touch the positive (+) terminal, which may cause a

short and result in death or serious injury.

496

7-3. Do-it-yourself maintenance

NOTICE

■ When recharging the battery

Never recharge the battery while the engine is running. Also, be sure all

accessories are turned off.

■ When adding distilled water (vehicles with maintenance type battery)

Avoid overfilling. Water spilled during battery recharging may cause corro-

sion.

Washer fluid

Add washer fluid in the following

situations:

● A washer does not work.

● The warning message appears

on the multi-information display

(if equipped).

WARNING

■ When adding washer fluid

Do not add 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 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.

7-3. Do-it-yourself maintenance

497

Fuel filter (diesel engine only)

You may drain the fuel filter yourself. However, as the operation is dif-

ficult, we recommend having it drained by any authorized Toyota

retailer or Toyota authorized repairer, or any reliable repairer. Even if

you decide to drain it yourself, contact any authorized Toyota retailer

or Toyota authorized repairer, or any reliable repairer.

The water in the fuel filter needs to be drained if one of the following

symptoms occurs:

 Vehicles without multi-information display

When the fuel system warning light flashes and a buzzer sounds.

(P. 567)

 Vehicles with multi-information display

When “Water accumulation in fuel filter See owner’s manual” is

shown on the multi-information display and a buzzer sounds*¹.

Vehicles without smart entry & start system: Turn the engine switch

to the “LOCK” position.

Vehicles with smart entry & start system: Turn the engine switch off.

Place a small tray under the drain plug or drain hose to catch the

water and any fuel that comes out.

Perform the draining as shown in the illustration.

Turn the drain plug counter-

clockwise about 2 to 2 1/2

turns.

Loosening more than this will

cause water oozing from around

the drain plug.

Operate the priming pump

until fuel begins to run out.

After draining, tighten the drain

plug by

hand.

¹: Models for model code destination Blank*²

^*2: See “Checking your vehicle’s model” if you

are

not sure of which model

your vehicle is. (P. 12)

498

7-3. Do-it-yourself maintenance

AdBlue™ (if equipped)

AdBlue™ is used to reduce the amount of nitrogen oxides in exhaust

gas. Make sure to observe the following precautions regarding

AdBlue™.

● AdBlue™ is consumed in the process of driving.

● When AdBlue™ is depleted, the engine cannot be restarted.

● When AdBlue™ needs to be refilled, have it refilled at any autho-

rized Toyota retailer or Toyota authorized repairer, or any reliable

repairer.

It may be a criminal offence to use a vehicle that does not consume

any reagent if it is required for the reduction of emissions.

■ Possible driving range

The amount of AdBlue™ that is consumed while driving differs

according to the driving conditions and driving environment. When

the amount of AdBlue™ that is consumed increases, the possible

driving range until it is necessary to refill AdBlue™ decreases.

Possible driving range

Short*¹

Long

[High-load driving]

[Normal driving]*²

[Low-load driving]

• When your vehicle is

• When driving short

towing a trailer (with

distances

towing hitch)

• When in traffic con-

• When firmly depress-

gestion

ing the accelerator

pedal

• When driving on long

uphill slopes

• When the DPF sys-

tem is operating

^*1: When the vehicle is used at high elevations and in low temperatures, the

amount of AdBlue™ that is consumed increases.

^*2: During normal driving, 1.0 L (1.1 qt., 0.9 Imp.qt.) of AdBlue™ is con-

sumed approximately every 600 km (373 miles). Also, after a full refill, the

vehicle can be driven for approximately 10000 km (6214 miles) before all

AdBlue™ is depleted.

7-3. Do-it-yourself maintenance

499

■ AdBlue™ warning light and warning message

When the AdBlue™ level is low,

the low AdBlue™ level warning

light turns on and a warning

message appears on the multi-

information display. (P. 500)

When the possible driving range

based on the remaining amount

of AdBlue™ reaches approxi-

mately 2400 km (1492 miles),

the low AdBlue™ level warning

light turns on and a warning

message is displayed.

When refilling AdBlue™ by yourself in an emergency, be sure to follow

the correct refilling procedures. (P. 501)

500

7-3. Do-it-yourself maintenance

■ Warning message

If the following warning message is displayed on the multi-information dis-

play, follow the appropriate troubleshooting procedure.

Warning message

Details/Actions

When AdBlue™ needs to be refilled

“AdBlue Level Low Fill up

 Have AdBlue™ refilled to the full at

AdBlue in 2400 km See

any authorized Toyota retailer or

Owner’s Manual”*¹

Toyota authorized repairer, or any

reliable repairer.

When AdBlue™ needs to be refilled

If the displayed driving distance is

exceeded, the engine cannot be

“AdBlue level Low No start in

restarted.

800 km Top up AdBlue See

 Have AdBlue™ refilled to the full at

Owner’s Manual”*^{1, 2}

any authorized Toyota retailer or

Toyota authorized repairer, or any

reliable repairer immediately.

When AdBlue™ needs to be refilled

 If the engine is stopped, it cannot be

restarted.

“AdBlue empty Unable to

Without stopping the engine, contact

Restart Engine Fill up AdBlue

any authorized Toyota retailer or

See Owner’s Manual”*²

Toyota authorized repairer, or any

reliable repairer immediately and

have AdBlue™ refilled to the full.

^*1: Use the driving range as a reference. The possible driving range that is dis-

played may differ from the actual driving range depending on the refill

method, driving conditions and driving environment. (P. 498)

^*2: The master warning light turns on and the buzzer sounds in accordance

with the warning message.

■ AdBlue™ gauge

The quantity of AdBlue™ remaining in the tank is displayed on the multi-infor-

mation display. (P. 135)

NOTICE

■ When the AdBlue™ level is low

When AdBlue™ is depleted, the engine cannot be restarted.

Be sure to have AdBlue™ refilled to the full at any authorized Toyota retailer

or Toyota authorized repairer, or any reliable repairer before it is completely

depleted.

7-3. Do-it-yourself maintenance

501

■ Refilling AdBlue™ by yourself in an emergency

When the engine cannot be restarted due to the depletion of

AdBlue™, adding approximately 11.0 L (11.6 qt., 9.7 Imp.qt.) or

more of AdBlue™ will allow the engine to be started again. Perform

the following procedures to refill AdBlue™. (The AdBlue™ tank has

a capacity of 17.0 L [18.0 qt., 15.0 Imp.qt.].)

 Refilling with the refilling equipment

Park the vehicle on a level surface, turn the engine switch off,

and then open the hood. (P. 482)

Open the AdBlue™ tank cap.

Insert the nozzle and refill

AdBlue™.

Refill AdBlue™ slowly so that it

does not spill.

Close the AdBlue™ tank cap.

Turn the cap until you hear a

click.

Check that the engine starts.

Have AdBlue™ refilled to the full at any authorized Toyota retailer or

Toyota authorized repairer, or any reliable repairer.

502

7-3. Do-it-yourself maintenance

 Refilling with the bottle

Park the vehicle on a level surface, turn the engine switch off,

and then open the hood. (P. 482)

Open the AdBlue™ tank cap.

Insert a bottle of AdBlue™

and fully tighten it.

Push down on the bottle.

AdBlue™ will begin to be

refilled. Refill AdBlue™ slowly

so that it does not spill. Do not

remove the bottle until it is

empty.

Check that no AdBlue™

remains in the bottle, and

then remove it.

Repeat steps 3 to 5 until approx-

imately

11.0 L

(11.6 qt.,

9.7

Imp.qt.) or more of AdBlue™

have been refilled.

7-3. Do-it-yourself maintenance

503

Close the AdBlue™ tank cap.

Turn the cap until you hear a

click.

Check that the engine starts.

The way of refilling may differ from those shown in the illustration.

Have AdBlue™ refilled to the full at any authorized Toyota retailer

or Toyota authorized repairer, or any reliable repairer.

■ Refilling AdBlue™

● Use AdBlue™ (compliant with ISO 22241-1).

AdBlue™ is a trademark of the German Association of the Automotive

Industry (VDA).

● Before driving for a long period of time in an area where AdBlue™ cannot

be refilled, consult any authorized Toyota retailer or Toyota authorized

repairer, or any reliable repairer.

■ When refilling AdBlue™

After refilling AdBlue™, the engine may take a few seconds longer than nor-

mal to start.

504

7-3. Do-it-yourself maintenance

NOTICE

■ When refilling AdBlue™

Observe the following precautions.

Failure to do so may result in damage to the vehicle parts, paint, etc.

●Do not use urea solution other than AdBlue™.

● If AdBlue™ comes into contact with any painted surfaces on the vehicle,

immediately wash the affected areas with water.

● If AdBlue™ is spilled inside the engine compartment, immediately wipe it

with a wet cloth.

■ When refilling AdBlue™ with the refilling equipment

Observe the following precautions to prevent AdBlue™ overflowing from the

AdBlue™ tank:

●Securely insert the nozzle into the AdBlue™ filler neck.

●Stop filling the tank after the nozzle automatically clicks off.

●Do not top off the AdBlue™ tank.

■ When storing AdBlue™ containers

Observe the following precautions.

Failure to do so may result in damage to vehicle parts, paint, etc., and

changes in the chemical compounds of AdBlue™ may cause unpleasant

odors.

●Do not leave AdBlue™ containers inside the vehicle.

● Tightly seal AdBlue™ containers and store them in a cool, dry location

with good ventilation and no exposure to direct sunlight.

7-3. Do-it-yourself maintenance

505

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.

New tread

Worn tread

Treadwear indicator

The location of

treadwear indicators

is shown by

a “TWI”

or “” mark, etc.,

molded into

the

sidewall of each tire.

Replace the tires if the treadwear indicators are showing

on a tire.

506

7-3. Do-it-yourself maintenance

Tire rotation

Rotate the tires in the order shown.

 Vehicles with spare tire of a dif-

 Vehicles with spare tire of the

ferent wheel type from the

same wheel type as the

installed tires

Front

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

rotation is carried out approximately every 10000 km (6000 miles).

■ 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 any authorized Toyota retailer or Toyota

authorized repairer, or any reliable repairer.

■ 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.

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

The effectiveness of the tires as snow tires is lost.

7-3. Do-it-yourself maintenance

507

WARNING

■ 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 handling 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.

NOTICE

■ Driving on rough roads

Take particular care when driving on roads with loose surfaces or potholes.

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.

508

7-3. Do-it-yourself maintenance

Tire inflation pressure

Make sure to maintain proper tire inflation pressure. Tire infla-

tion pressure should be checked at least once per month. How-

ever, Toyota recommends that tire inflation pressure be checked

once every two weeks. (P. 637)

■ Effects of incorrect tire inflation pressure

Driving with incorrect tire inflation pressure may result in the following:

●Reduced fuel economy

● Reduced driving comfort and poor handling

● Reduced tire life due to wear

● Reduced safety

● Damage to the drive train

If a tire needs frequent inflating, have it checked by any authorized Toyota

retailer or Toyota authorized repairer, or any reliable repairer.

■ 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 1.5 km or 1 mile, you will get an accurate cold tire inflation

pressure reading.

● Always use a tire pressure gauge.

It is difficult to judge if a tire is properly inflated based only on its appear-

ance.

● It is normal for the tire inflation pressure to be higher after driving as heat is

generated in the tire. Do not reduce tire inflation pressure after driving.

●Passengers and luggage weight should be placed so that the vehicle is bal-

anced.

7-3. Do-it-yourself maintenance

509

WARNING

■ Proper inflation is critical to save tire performance

Keep your tires properly inflated.

If the tires are not properly inflated, the following conditions may occur

which could lead to an accident resulting in death or serious injury:

●Excessive wear

●Uneven wear

●Poor handling

● Possibility of blowouts resulting from overheated tires

● Air leaking from between tire and wheel

● Wheel deformation and/or tire damage

●Greater possibility of tire damage while driving (due to road hazards,

expansion joints, sharp edges in the road, etc.)

NOTICE

■ When inspecting and adjusting tire inflation pressure

Be sure to put the tire valve caps back on.

If a valve cap is not installed, dirt or moisture may get into the valve and

cause an air leak, resulting in decreased tire inflation pressure.

510

7-3. 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 any authorized Toyota retailer or

Toyota authorized repairer, or any reliable repairer.

*: 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 (if equipped)

● 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 1600 km (1000 miles).

● Be careful not to damage the aluminum wheels when using tire

chains.

● Use only Toyota genuine balance weights or equivalent and a plas-

tic or rubber hammer when balancing your wheels.

7-3. Do-it-yourself maintenance

511

WARNING

■ 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 tube-

less tire. Doing so may result in an accident, causing death or serious

injury.

■ When installing the wheel nuts

●Be sure to install the wheel nuts with the tapered ends facing inward.

(P. 590) 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 seri-

ous 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 acci-

dent and resulting in death or serious injury. Remove any oil or grease

from the wheel bolts or wheel nuts.

■ Use of defective wheels prohibited

Do not use cracked or deformed wheels.

Doing so could cause the tire to leak air during driving, possibly causing an

accident.

7-3. Do-it-yourself maintenance

513

Pull out the damper

(if

equipped) as shown in the illus-

tration, and then remove the

glove box.

Remove the filter cover.

Remove the air conditioning fil-

ter and replace it with a new

one.

The “UP” marks shown on the fil-

ter should be pointing up.

■ Changing interval

Inspect and replace the air conditioning filter according to the maintenance

schedule. In dusty areas or areas with heavy traffic flow, early replacement

may be required. (For scheduled maintenance information, please refer to the

“Toyota Service Booklet” or “Toyota Warranty Booklet”.)

■ If air flow from the vents decreases dramatically

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

NOTICE

■ When using the air conditioning system

Make sure that a filter is always installed.

Using the air conditioning system without a filter may cause damage to the

system.

514

7-3. Do-it-yourself maintenance

Wireless remote control/electronic key

battery^

Replace the battery with a new one if it is depleted.

You will need the following items:

● Flathead screwdriver

● Small flathead screwdriver

● Lithium battery

Vehicles without smart entry & start system: CR1620

Vehicles with smart entry & start system: CR2032

Replacing the battery

 Vehicles without smart entry & start system

Remove the cover.

To prevent damage to the key,

cover the tip of the screwdriver with

a rag.

Remove the battery cover.

: If equipped

516

7-3. Do-it-yourself maintenance

■ Use a lithium battery

Vehicles without smart entry & start system: CR1620

Vehicles with smart entry & start system: CR2032

● Batteries can be purchased at any authorized Toyota retailer or Toyota

authorized repairer, or any reliable repairer, local electrical appliance shops

or camera stores.

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

facturer.

● Dispose of used batteries according to local laws.

■ If the key battery is depleted

The following symptoms may occur:

● The smart entry & start system (if equipped) and wireless remote control will

not function properly.

● The operational range will be reduced.

WARNING

■ Battery precautions

Observe the following precautions.

Failure to do so may result in death or serious injury.

●Do not swallow the battery. Doing so may cause chemical burns.

● A coin battery or button battery is used in the electronic key. If a battery

is swallowed, it may cause severe chemical burns in as little as 2 hours

and may result in death or serious injury.

●Keep away new and removed batteries from children.

●If the cover cannot be firmly closed, stop using the electronic key and

stow the key in the place where children cannot reach, and then contact

any authorized Toyota retailer or Toyota authorized repairer, or any reli-

able repairer.

●If you accidentally swallow a battery or put a battery into a part of your

body, get emergency medical attention immediately.

■ To prevent battery explosion or leakage of flammable liquid or gas

●Replace the battery with a new battery of the same type. If a wrong type

of battery is used, it may explode.

●Do not expose batteries to extremely low pressure due to high altitude or

extremely high temperatures.

●Do not burn, break or cut a battery.

518

7-3. 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 nec-

essary.

Vehicles without smart entry & start system:

Turn the engine switch to the “LOCK” position.

Vehicles with smart entry & start system:

Turn the engine switch off.

Open the fuse box cover.

 In the engine compartment

Push the tab in and pull the lock

release, and lift the lid off.

 Under the instrument panel (left-hand drive vehicles)

Remove the lid.

522

7-3. Do-it-yourself maintenance

■ After a fuse is replaced

● If the lights do not turn on even after the fuse has been replaced, a bulb may

need replacement. (P. 523)

● If the replaced fuse blows again, have the vehicle inspected by any autho-

rized Toyota retailer or Toyota authorized repairer, or any reliable repairer.

■ If there is an overload in a circuit

The fuses are designed to blow, protecting the wiring harness from damage.

WARNING

■ To prevent system breakdowns and vehicle fire

Observe the following precautions.

Failure to do so may cause damage to the vehicle, and possibly a fire or

injury.

●Never use a fuse of a higher amperage rating than that indicated, or use

any other object in place of a fuse.

●Always use a genuine Toyota fuse or equivalent.

Never replace a fuse with a wire, even as a temporary fix.

●Do not modify the fuses or fuse boxes.

NOTICE

■ Before replacing fuses

Have the cause of electrical overload determined and repaired by any

authorized Toyota retailer or Toyota authorized repairer, or any reliable

repairer as soon as possible.

7-3. Do-it-yourself maintenance

523

Light bulbs

You may replace the following bulbs by yourself. The difficulty

level of replacement varies depending on the bulb. As there is a

danger that components may be damaged, we recommend that

replacement is carried out by any authorized Toyota retailer or

Toyota authorized repairer, or any reliable repairer.

Preparing for light bulb replacement

Check the wattage of the light bulb to be replaced. (P. 640)

Bulb locations

The design and the location of the exterior lights may differ depending

on the grade, etc.

■ Front

 Halogen headlights type A

 Halogen headlights type B

Citroen C4 (2023 year). Manual in english - page 13