2022 TOYOTA COROLLA HATCHBACK battery

469
7
7-3. Do-it-yourself maintenance
Maintenance and care
WA R N I N G
●Do not leave anything that may
burn easily, such as paper and
rags, in the engine compartment.
●Do not smoke, cause sparks or
expose an open flame to fuel or the battery. Fuel and battery fumes are
flammable.
●Be extremely cautious when work- ing on the battery. It contains poi-
sonous and corrosive sulfuric acid.
●Take care because brake fluid can
harm your hands or eyes and dam-
age 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,
consult a doctor.
■When working near the electric
cooling fans or radiator grille
Be sure the engine switch is OFF. With the engine switch in ON, the
electric cooling fans may automati-
cally start to run if the air conditioning is on and/or the coolant temperature
is high. (P.476)
■Safety glasses
Wear safety glasses to prevent flying
or falling material, fluid spray, etc. from getting in your eyes.
NOTICE
■If you remove the air cleaner fil-
ter
Driving with the air cleaner filter removed may cause excessive
engine wear due to dirt in the air.
■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 or when the fluid level in the accumulator is high.
If the reservoir needs frequent refill-
ing, it may indicate a serious problem.

4727-3. Do-it-yourself maintenance
Washer fluid tank (P.477)
Engine coolant reservoir ( P. 4 7 5 )
Fuse boxes ( P.494)
Engine oil filler cap ( P.473)
Engine oil level dipstick ( P.472)
Intercooler coolant reservoir ( P.475)
Battery ( P.476)
Radiator ( P.476)
Condenser ( P.476)
Electric cooling fans
With the engine at operating tem-
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 compartment
Components
Checking and adding the
engine oil

4767-3. Do-it-yourself maintenance
Check the radiator, condenser and
intercooler and clear away any for-
eign 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.
Check the battery as follows.
■Battery exterior
Make sure that the battery termi-
nals 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 fol-
lowing precautions before recharging:
●If recharging with the battery installed
on the vehicle, be sure to disconnect the ground cable.
●Make sure the charger is off when connecting and disconnecting the
charger cables to the battery.
■After recharging/reconnecting the
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
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 ACC. The engine may not
WA R N I N G
■When the engine is hot
Do not remove the engine coolant
reservoir cap and the intercooler cool- ant 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 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.
■If you spill coolant
Be sure to wash it off with water to
prevent it from damaging parts or
paint.
Checking the radiator, con-
denser and intercooler
WA R N I N G
■When the engine is hot
Do not touch the radiator, condenser
or intercooler as they may be hot and
cause serious injuries, such as burns.
Battery

477
7
7-3. Do-it-yourself maintenance
Maintenance and care
start with the engine switch turned off.
However, the engine will operate nor- mally 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 discon-
nected. Make sure to turn off the
engine before disconnecting the bat- tery. 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 author-
ized Toyota retailer or Toyota authorized repairer, or any reliable repairer.
Vehicles with a washer fluid level
gauge
The washer fluid level is extremely
low.
Raise the cap keeping your finger
WA R N I N G
■Chemicals in the battery
The battery contains poisonous and
corrosive sulfuric acid and may pro- duce hydrogen gas which is flamma-
ble and explosive. To reduce the risk
of death or serious injury, take the fol- lowing 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 bat-tery.
■Where to safely charge the bat-tery
Always charge the battery in an open
area. Do not charge the battery in a garage or closed room where there is
insufficient ventilation.
■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 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-lyte
Drink a large quantity of water or
milk. Get emergency medical atten- tion immediately.
■When disconnecting the battery
Do not disconnect the negative (-) ter-
minal on the body side. The discon-
nected negative (-) terminal may touch the positive (+) terminal, which
may cause a short and result in death
or serious injury.
NOTICE
■When recharging the battery
Never recharge the battery while the
engine is running. Also, be sure all
accessories are turned off.
Adding the washer fluid

4907-3. Do-it-yourself maintenance
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 fil-
ter and replace if necessary.
■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.
 Flathead screwdriver
 Small flathead screwdriver
 Lithium battery CR2032
■Use a CR2032 lithium battery
●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 equiva-
lent type recommended by the manu- facturer.
●Dispose of used batteries according to local laws.
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.
■To prevent damage to the filter
cover
When moving the filter cover in the
direction of arrow to release the fit-
ting, pay attention not to apply exces- sive force to the cl aws. Otherwise, the
claws may be damaged.
Wireless remote con-
trol/electronic key bat-
ter y
Replace the battery with a new
one if it is depleted.
As the key may be damaged if
the following procedure is not
performed properly, it is rec-
ommended that key battery
replacement be performed by
any authorized Toyota retailer
or Toyota authorized repairer,
or any reliable repairer.
Items to prepare

491
7
7-3. Do-it-yourself maintenance
Maintenance and care
Vehicles without a smart entry &
start system
1 Remove the key cover.
To prevent damage to the key, cover the tip of the flathead screwdriver with a
rag.
2 Remove the battery cover.
If the battery cover is difficult to remove,
lift the edge to remove it.
3 Remove the depleted battery
using a small flathead screw-
driver.
Insert a new battery with the “+” termi-
nal facing up.
4 Install the battery cover with the
tab facing up.
Push the entire edge of the battery
cover into the key.
5 Install the key cover.
Align the key cover with the key and
then press it straight into the key.
Make sure that the key cover is securely installed without any gaps
between it and the key.
6 Operate the or switch
and check that the doors can be
locked/unlocked.
Replacing the battery

4927-3. Do-it-yourself maintenance
Vehicles with a smart entry &
start system
1 Release the lock and remove
the mechanical key.
2 Remove the key cover.
To prevent damage to the key, cover
the tip of the flathead screwdriver with a rag.
3 Remove the depleted battery
using a small flathead screw-
driver.
When removing the cover, the elec- tronic key module may stick to the
cover and the battery may not be visi-
ble. In this case, remove the electronic key module in order to remove the bat-
tery.
Insert a new battery with the “+” termi-
nal facing up.
4 When installing the key cover
and mechanical key, install by
conducting step 2 and step 1
with the directions reversed.
5 Operate the or switch
and check that the doors can be
locked/unlocked.
WA R N I N G
■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 wireless remote con- trol/electronic key. If a battery is
swallowed, it ma y cause severe
chemical burns in as little as 2 hours and may result in death or
serious injury.
●Keep away new and removed bat-
teries from children.
●If the cover cannot be firmly closed,
stop using the wireless remote con-
trol/electronic key and stow the key in the place where children cannot
reach, and then contact any author-
ized Toyota retailer or Toyota authorized repairer, or any reliable
repairer.

493
7
7-3. Do-it-yourself maintenance
Maintenance and care
WA R N I N G
●If you accidentally swallow a battery
or put a battery into a part of your
body, get emergency medical atten- tion immediately.
■To prevent battery explosion or leakage of flammable liquid or
gas
●Replace the battery with a new bat-
tery 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 tempera- tures.
●Do not burn, break or cut a battery.
■Lithium battery precautions
CAUTION RISK OF EXPLOSION IF BATTERY
IS REPLACED BY AN INCORRECT
TYPE. DISPOSE OF USED BATTERIES
ACCORDING TO THE INSTRUC-
TIONS
NOTICE
■When replacing the battery
Use a flathead screwdriver of appro-
priate size. Applyi ng excessive force
may deform or damage the cover.
■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
component inside the remote con- trol.
●Do not bend either of the battery terminals.
■When removing the battery cover (vehicles without a smart entry &
start system)
Do not forcibly remove the battery cover, otherwise it may be damaged.
If the battery cover is difficult to
remove, lift the edge to remove it.