Toyota 4Runner (2023 year). Manual in english - page 26

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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.

■

Checking fluid level

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

“MAX” line
“MIN” line

■

Adding fluid

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

■

Refilling brake fluid

Turn the engine switch off.
Depress the brake pedal more than 40 times.
Remove the reservoir cap by hand. Add brake fluid up to the
“MAX” line.
If you do not follow the procedure above, the reservoir may over-
flow.

Radiator and condenser

WARNING

■

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.

Brake fluid

Fluid type

FMVSS No.116 DOT 3 or SAE J1703 brake fluid

Items

Clean funnel

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6-3. Do-it-yourself maintenance

■

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
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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Fluid level

The fluid level should be within the appropriate range.

Full (when cold)
Add fluid (when cold)
Full (when hot)
Add fluid (when hot)

Hot: Vehicle has been driven around 50 mph (80 km/h) for 20 min-

utes, or slightly longer in frigid temperatures. (Fluid tempera-
ture, 140°F - 175°F [60°C - 80°C]).

Cold: Engine has not been run for about 5 hours. (Room tempera-

ture, 50°F - 85°F [10°C - 30°C]).

■

Checking the fluid level

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

Clean all dirt off the reservoir.
Remove the cap by turning it counterclockwise.
Wipe the dipstick clean.
Reinstall the cap and remove it again.
Check the fluid level.

Power steering fluid

Fluid type

Automatic transmission fluid DEXRON

II or III

Items

Rag or paper, clean funnel (only for adding fluid)

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6-3. Do-it-yourself maintenance

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 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.

WARNING

■

When checking the reservoir

Take care as the reservoir may be hot.

NOTICE

■

When adding fluid

Avoid overfilling, or the power steering may be damaged.

■

After replacing the reservoir cap

Check the steering box case, vane pump and hose connections for leaks or
damage.

Battery

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■

After recharging/reconnecting the battery

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

Shift the shift lever to P.
Open and close any of the doors.
Restart the engine.

●

Unlocking the doors using the smart key system may not be possible imme-
diately after reconnecting the battery. If this happens, use the wireless
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 when the engine switch turned from 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 your Toyota
dealer.

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.

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6-3. Do-it-yourself maintenance

WARNING

■

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

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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

Type A

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.



Type B

If the washer fluid level is at
“LOW”, add washer fluid.

■

Using the gauge (Type B only)

Washer fluid

The washer fluid level can be checked by
observing the position of the level on the
liquid-covered holes in the gauge.
If the level falls below the second hole
from the bottom (the “LOW” position), refill
the washer fluid.

Current
fluid
level

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6-3. Do-it-yourself maintenance

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.

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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.

Tires

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

Checking tires

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6-3. Do-it-yourself maintenance



Vehicles without P245/60R20 tires

Rotate the tires in the order
shown.

To equalize tire wear and extend
tire life, Toyota recommends that
tire rotation is carried out at the
same interval as tire inspection.



Vehicles with P245/60R20 tires

Rotate the tires in the order
shown.

To equalize tire wear and extend
tire life, Toyota recommends that
tire rotation is carried out at the
same interval as tire inspection.

Tire rotation

Front

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Your vehicle is equipped with a tire pressure warning system that uses
tire pressure warning valve and transmitters to detect low tire inflation
pressure before serious problems arise.

●

The  tire  pressure  detected  by
the  tire  pressure  warning  sys-
tem  can  be  displayed  on  the
multi-information display.

If equipped

●

If the tire pressure drops below
a  predetermined  level,  the
driver  is  warned  by  a  screen
display  and  a  warning  light.
(



P. 481)

If equipped

Tire pressure warning system

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6-3. Do-it-yourself maintenance

◆

Installing tire pressure warning valve and transmitters

When replacing the tires or wheels, the tire pressure warning valve
and  transmitters  must  be  installed  to  the  wheels  which  will  be
installed to the vehicle.
When  new  tire  pressure  warning  valve  and  transmitters  are
installed,  new  ID  codes  must  be  registered  in  the  tire  pressure
warning  computer  and  the  tire  pressure  warning  system  must  be
initialized. (



P. 431)

◆

Initializing the tire pressure warning system

■

The tire pressure warning system must be initialized in the fol-
lowing circumstances:

●

When the tire inflation pressure is changed such as when chang-
ing traveling speed or load weight.

●

When the tire inflation pressure is changed such as when the tire
size is changed.

●

When rotating the tires.

●

After performing the transmitter ID code registration procedure.
(



P. 431)

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

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

The initialization procedure cannot be started while the vehicle is

moving.

Adjust the tire inflation pressure to the specified cold tire inflation
pressure level. (



P. 532)

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.

Start the engine. (



P. 199)

Select

on the multi-information display using the meter con-

trol switches on the steering wheel. (



P. 96)

Select “Vehicle Settings” and then press and hold

Select “TPWS” and then press

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Select “Set Pressure” then
press and hold

until the

tire pressure warning light
blinks 3 times.

Then a message will be dis-

played on the multi-information

display.
“---” will be displayed on the

multi-information display for

the inflation pressure of each

tire while initialization is being

performed.

Drive straight (with occasional left and right turns) at approxi-
mately 25 mph (40 km/h) or more for approximately 10 to 30 min-
utes.

Initialization is complete when the position of each tire is determined

and the inflation pressure of each tire is displayed on the multi-infor-

mation display.
Initialization may take longer than approximately 1 hour in certain

situations, such as when the vehicle is stopped for a long time at

traffic lights, etc. (



P. 436)

◆

Registering ID codes

Every tire pressure warning valve and transmitter has a unique ID
code. When replacing a tire pressure warning valve and transmitter,
it is necessary to register the ID codes.
The ID codes can be registered on

of the multi-information dis-

play.

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6-3. Do-it-yourself maintenance

■

How to register the ID codes

Select

on the multi-information display using the meter con-

trol switches on the steering wheel. (



P. 96)

Select “Vehicle Settings” and then press and hold

Select “TPWS” and then press

Select “Change Wheel Set”
then press and hold

until

the tire pressure warning
light blinks slowly 3 times.

Then a message will be dis-

played on the multi-information

display.
When registration is being per-

formed, the tire pressure warn-

ing

light

will

blink

for

approximately 1 minute then

illuminate and “---” will be dis-

played for the inflation pres-

sure of each tire on the multi-

information display.

Drive straight (with occasional left and right turns) at approxi-
mately 25 mph (40 km/h) or more for approximately 10 to 30 min-
utes.

Registration is complete when the tire pressure warning light turns

off and the inflation pressure of each tire is displayed on the multi-

information display.
Registration may take longer than approximately 1 hour in certain

situations, such as when the vehicle is stopped for a long time at

traffic lights, etc. (



P. 437)

After registering the ID codes, make sure to initialize the tire pres-

sure warning system. (



P. 430)

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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.

■

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. 537)

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6-3. Do-it-yourself maintenance

■

Tire types

●

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 install-
ing snow tires, be sure to replace all four tires.

●

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 com-
pared with summer tires in highway driving.

●

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 restrictions. Snow tires
should be installed on all wheels. (



P. 331)

■

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

The effectiveness of the tires as snow tires is lost.

■

Warning performance of the tire pressure warning system

The warning of the tire pressure warning system will change in accor-

dance with the conditions under which it was initialized. For this reason,

the system may give a warning even if the tire pressure does not reach a

low enough level, or if the pressure is higher than the pressure that was

adjusted to when the system was initialized.

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