2021 TOYOTA HILUX battery

4947-3. Do-it-yourself maintenance
HILUX_OM_OM0K513E_(EE)
Check the battery as follows.
QBattery exterior
Make sure that the battery terminals are not corroded and that
there are no loose connections, cracks, or loose clamps.
Te r m i n a l s
Hold-down clamp
QChecking 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.
Battery
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4957-3. Do-it-yourself maintenance
HILUX_OM_OM0K513E_(EE)
7
Maintenance and care
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-
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.
QAdding 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.
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Low O.K.2
3
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2
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4967-3. Do-it-yourself maintenance
HILUX_OM_OM0K513E_(EE)
QBefore recharging
When recharging, the battery produces hydrogen gas which is flammable and
explosive. Therefore, observe the following before recharging:
O If recharging with the battery installed on the vehicle, be sure to disconnect
the ground cable.
O Make sure the power switch on the charger is off when connecting and dis-
connecting the charger cables to the battery.
Q After recharging/reconnecting the battery (vehicles with smart entry &
start system)
The engine may not start. Follow the procedure below to initialize the system.
Shift the shift lever to P (automat ic transmission) or depress the brake
pedal with the shift lever in N (manual transmission).
Open and close any of the doors.
Restart the engine.
O 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.
O 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.
O 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.
Q 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 repai rer, or any reliable repairer. Continu-
ing to drive the vehicle may be dangerous.
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4977-3. Do-it-yourself maintenance
HILUX_OM_OM0K513E_(EE)
7
Maintenance and care
WARNING
QChemicals 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:
O Do not cause sparks by touching the battery terminals with tools.
O Do not smoke or light a match near the battery.
O Avoid contact with eyes, skin and clothes.
O Never inhale or swallow electrolyte.
O Wear protective safety glasses when working near the battery.
O Keep children away from the battery.
Q 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 w here there is insufficient ventilation.
Q 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.
Q Emergency measures regarding electrolyte
O 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.
O If electrolyte gets on your skin
Wash the affected area thoroughly. If you feel pain or burning, get medical
attention immediately.
O 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.
O If you accidentally swallow electrolyte
Drink a large quantity of water or milk. Get emergency medical attention
immediately.
O 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.
Q 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.

4987-3. Do-it-yourself maintenance
HILUX_OM_OM0K513E_(EE)
Add washer fluid in the following
situations:
O A washer does not work.
O The warning message appears
on the multi-information display
(if equipped).
NOTICE
Q When recharging the battery
Never recharge the battery while the engine is running. Also, be sure all
accessories are turned off.
Q When adding distilled water (vehicles with maintenance type battery)
Avoid overfilling. Water spilled duri ng battery recharging may cause corro-
sion.
Washer fluid
WARNING
Q When adding washer fluid
Do not add washer fluid when the engine is hot or running as washer fluid
contains alcohol and may catch fi re if spilled on the engine etc.
NOTICE
QDo 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.
Q Diluting washer fluid
Dilute washer fluid with water as necessary.
Refer to the freezing temperatures list ed on the label of the washer fluid bot-
tle.

5167-3. Do-it-yourself maintenance
HILUX_OM_OM0K513E_(EE)
Wireless remote control/electronic key
batter y
O Flathead screwdriver
O Small flathead screwdriver
O Lithium battery
Vehicles without smart entry & start system: CR1620
Vehicles with smart entry & start system: CR2032
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
Replace the battery with a new one if it is depleted.
You will need the following items:
Replacing the battery
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5177-3. Do-it-yourself maintenance
HILUX_OM_OM0K513E_(EE)
7
Maintenance and care
Remove the depleted battery.
Insert a new battery with the “+”
terminal facing up.
Vehicles with smart entry & start system
Take out the mechanical key.
Remove the cover.
To prevent damage to the key,
cover the tip of the screwdriver with
a rag.
Remove the depleted battery.
Insert a new battery with the “+”
terminal facing up.
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5187-3. Do-it-yourself maintenance
HILUX_OM_OM0K513E_(EE)
QUse a lithium battery
Vehicles without smart entry & start system: CR1620
Vehicles with smart entry & start system: CR2032
O Batteries can be purchased at any authorized Toyota retailer or Toyota
authorized repairer, or any reliable repairer, local electrical appliance shops
or camera stores.
O Replace only with the same or equivalent type recommended by the manu-
facturer.
O Dispose of used batteries according to local laws.
Q If the key battery is depleted
The following symptoms may occur:
O The smart entry & start system (if equipped) and wireless remote control will
not function properly.
O The operational range will be reduced.
WARNING
QBattery precautions
Observe the following precautions.
Failure to do so may result in death or serious injury.
O Do not swallow the battery. Doing so may cause chemical burns.
O 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.
O Keep away new and removed batteries from children.
O 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.
O If you accidentally swallow a battery or put a battery into a part of your
body, get emergency medical attention immediately.
Q To prevent battery explosion or leakage of flammable liquid or gas
O Replace the battery with a new battery of the same type. If a wrong type
of battery is used, it may explode.
O Do not expose batteries to extremely low pressure due to high altitude or
extremely high temperatures.
O Do not burn, break or cut a battery.