TOYOTA YARIS CROSS 2021 Owners Manual

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6-3. Do-it-yourself maintenance
Maintenance and care
Washer fluid tank (P.393)
Fuse boxes ( P.418)
Power control unit coolant reservoir ( P.391)
Engine oil filler cap ( P.390)
Engine oil level dipstick ( P.390)
Engine coolant reservoir ( P. 3 9 1 )
Radiator ( P.393)
Condenser ( P.393)
Electric cooling fan
■12-volt battery
 P. 3 9 4
With the engine at operating tem-
Engine compartment
Components
Checking and adding the
engine oil

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6-3. Do-it-yourself maintenance
perature and turned off, check the
oil level on the dipstick.
■Checking the engine oil
1 Park the vehicle on level
ground. After warming up the
engine and turning off the hybrid
system, wait more than 5 min-
utes 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.
Low
Normal
Excessive
The shape of the dipstick may differ
depending on the type of vehicle or engine.
6 Wipe the dipstick and reinsert it
fully.
■Checking the oil type and pre-
paring the item needed
Make sure to check the oil type and
prepare the items needed before
adding oil.
 Engine oil selection
 P.490
 Oil quantity (Low  Full)
1.5 L (1.6 qt., 1.3 Imp. qt.)
 Item
Clean funnel
■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.
1 Remove the oil filler cap by turn-
ing it counterclockwise.
2 Add engine oil slowly, checking
the dipstick.
3 Install the oil filler cap by turning
it clockwise.

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Maintenance and care
■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 inter- vals.
●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 inappropri-ate viscosity is used
●When driving at high engine speeds or with a heavy load, when towing
(vehicles with towing packages), or when driving while accelerating or decelerating frequently
●When leaving the engine idling for a long time, or when driving frequently
through heavy traffic
■After changing the engine oil
The engine oil maintenance data should be reset. Perform the following proce-
dures:
1 Press / (7-inch display) or
/ (4.2-inch display) of the
meter control switch to select .
2 Press / (7-inch display) or
/ (4.2-inch display) to select
“Vehicle Settings” and then press
and hold .
3 Press / to select “Oil Mainte-
nance” and then press .
4 Press / to select “Yes” and
then press .
A message will be displayed on the multi-information display when the reset
procedure has been completed.
■Engine coolant reservoir
The coolant level is satisfactory if it
is between the “F” and “L” lines on
WARNING
■Used engine oil
●Used engine oil contains poten-
tially harmful contaminants which may cause skin disorders such as inflammation and skin cancer, so
care should be taken to avoid pro- longed 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 fil-
ters 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 dam- age
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.
Checking the coolant

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6-3. Do-it-yourself maintenance
the reservoir when the engine is
cold.
Reservoir cap
“F” line
“L” line
If the level is on or below the “L” line,
add coolant up to the “F” line. ( P.481)
■Power control unit coolant
reservoir
The coolant level is satisfactory if it
is between the “F” and “L” lines on
the reservoir when the hybrid sys-
tem is cold.
Reservoir cap
“F” line
“L” line
If the level is on or below the “L” line,
add coolant up to the “F” line. ( P.481)
■Coolant selection
Only use “Toyota Super Long Life Cool-
ant” 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 coolant, contact
any authorized Toyota retailer or Toyota authorized repairer, or any reliable repairer.
■If the coolant level drops within a
short time of replenishing
Visually check the radiator, hoses, engine/power control unit coolant reser-
voir caps, 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 hybrid system is hot
Do not remove the engine/power con-
trol unit coolant reservoir caps. ( P.483)
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 mix- ture of water and antifreeze must be used to provide proper lubrication,
corrosion protection and cooling. Be sure to read the antifreeze or coolant label.

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Maintenance and care
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 any authorized Toyota
retailer or Toyota authorized
repairer, or any reliable repairer.
If the washer fluid level is at “1/2”,
add washer fluid.
NOTICE
■If you spill coolant
Be sure to wash it off with water to
prevent it from damaging parts or paint.
Checking the radiator and
condenser
WARNING
■When the hybrid system is hot
Do not touch the radiator or con-
denser as they may be hot and cause serious injuries, such as burns.
Adding the 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 prob-
lems of the washer fluid not spraying.
■Diluting washer fluid
Dilute washer fluid with water as nec- essary.Refer to the freezing temperatures
listed on the label of the washer fluid bottle.

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The 12-volt battery is located in the
right-hand side of the rear seats.
1 Remove the clips.
2 Remove the clips from the
claws.
3 Slide the tabs out of the
notches.
■Before recharging
When recharging, the 12-volt battery produces hydrogen gas which is flam-mable and explosive. Therefore,
observe the following precautions 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
disconnecting the charger cables to the 12-volt battery.
■After recharging/reconnecting the 12-volt battery (vehicles with a
smart entry & start system)
●Unlocking the doors using the smart
entry & start system may not be possi- ble immediately after reconnecting the 12-volt battery. If this happens, use
the wireless remote control or the mechanical key to lock/unlock the doors.
●Start the hybrid system with the power switch in ACC. The hybrid system
may not start with the power switch turned off. However, the hybrid sys-tem will operate normally from the
second attempt.
●The power switch mode is recorded
by the vehicle. If the 12-volt battery is 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 before disconnecting the
12-volt battery. Take extra care when connecting the 12-volt battery if the power switch mode prior to discharge
is unknown.
If the system will not start even after multiple attempts, contact any autho-
rized Toyota retailer or Toyota autho- rized repairer, or any reliable repairer.
12-volt batter y
Location
Removing the 12-volt bat-
tery cover

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Maintenance and care
Make sure that the 12-volt battery
terminals are not corroded and that
there are no loose connections,
cracks, or loose clamps.
WARNING
■Chemicals in the 12-volt battery
The 12-volt battery contains poison-
ous 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 work-ing 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 bat-
tery.
●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 insufficient venti-lation.
■Emergency measures regarding electrolyte
●If electrolyte gets in your eyesFlush 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 med-ical attention immediately.
●If electrolyte gets on your clothesIt can soak through clothing on to your skin. Immediately take off the
clothing and follow the procedure above if necessary.
●If you accidentally swallow electro-lyteDrink a large quantity of water or
milk. Get emergency medical atten- tion immediately.
■When replacing the 12-volt bat-tery
Use a 12-volt battery designed for this
vehicle. Failure to do so may cause gas (hydrogen) to enter the passen-ger compartment, causing a fire or
explosion.
For replacement of the 12-volt battery, contact any authorized Toyota retailer
or Toyota authorized repairer, or any reliable repairer.
NOTICE
■When recharging the 12-volt bat-
tery
Never recharge the 12-volt battery while the hybrid system is operating.
Also, be sure all accessories are turned off.
Exterior

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Terminals
Hold-down clamp
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.,
Tires
Replace or rotate tires in
accordance with maintenance
schedules and treadwear.
Checking tires

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Maintenance and care
molded into the sidewall of each tire.
Replace the tires if the treadwear indi-
cators are showing on a tire.
■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 inter- nal 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.
■Checking the tire valves
When replacing the tires, check the tire
valves for deformation, cracks, and other damage.
Rotate the tires in the order shown.
WARNING
■When inspecting or replacing tires
Observe the following precautions to
prevent accidents. Failure to do so may cause damage to parts of the drivetrain as well as
dangerous handling characteristics, which may lead to an accident result-ing 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
■If tire inflation pressure of each tire becomes low while driving
Do not continue driving, or your tires and/or wheels may be ruined.
■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 addi-
tion, driving on rough roads may cause damage to the tires them-selves, as well as the vehicle’s
wheels and body.
Tire rotation

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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 rotating front and rear tires which
have different tire inflation pressures,
do not fail to initialize the tire pressure
warning system after tire rotation.
Your vehicle is equipped with a tire
pressure warning system that uses
tire pressure warning valves and
transmitters to detect low tire infla-
tion pressure before serious prob-
lems arise.
The tire pressure warning system
of this vehicle adopts a 2-type
warning system.
 When “Adjust Pressure” is dis-
played (Normal Warning)
A warning with the tire pressure warn-
ing light and warning buzzer when
there is an unknown level of low tire
pressure with the appearance of the tire
due to natural air leakage as well as the
pressure lowering due to changes in
the pressure according to the outside
temperature. (Ways of coping: P.447,
494)
 When “Immediately Check tire
when Safe” is displayed (Emer-
gency Warning)
A warning with the tire pressure warn-
ing light and warning buzzer when
there is a known level of low tire pres-
sure with the appearance of the tire due
to pressure suddenly lowering. (Ways
of coping: P.452, 463)
However, the system may not be able
to detect sudden tire ruptures (bursting,
etc.).
The tire pressure detected by the
tire pressure warning system can
be displayed on the 9-inch display
multimedia system or multi-infor-
mation display.
9-inch display multimedia system
1 Press the “HOME” button.
2 Select “Vehicle” on the “Home”
screen.
3 If a screen other than “Tyre
pressure” is displayed, select
“Tyre pressure”.
Multi-information display
The unit can be changed.
Tire pressure warning sys-
tem