battery TOYOTA BZ4X 2022 Owners Manual (in English)

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7-3. Do-it-yourself maintenance
Maintenance and care
Check the 12-volt battery as fol-
lows.
■12-volt battery exterior
Make sure that the 12-volt battery
terminals are not corroded and that
there are no loose connections,
cracks, or loose clamps.
Terminals
Hold-down clamp
■Checking 12-volt battery fluid
Check that the level is between the
“UPPER LEVEL” and “LOWER
LEVEL” lines.
“UPPER LEVEL” line
“LOWER LEVEL” line
If the fluid level is at or below the
“LOWER LEVEL” line, add distilled
water.
■Adding distilled water
1 Remove the vent plug.
2 Add distilled water.
If the “UPPER LEVEL” cannot be seen,
check the fluid level by looking directly at the cell.
3 Put the vent plug back on and
close it securely.
■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-
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 12-volt battery

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7-3. Do-it-yourself maintenance
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
●The EV system may not start. Follow the procedure below to initialize the
system.
1 Shift the shift position to P.
2 Open and close any of the doors.
3 Restart the EV 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 EV system with the power switch in ACC. The EV system may
not start with the power switch turned off. However, the EV system will oper-ate normally from the second attempt.
●The power switch mode is recorded by the vehicle. If the 12-volt battery is
disconnected and 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 switch before disconnecting the 12-volt bat-
tery. Take extra care when connecting the 12-volt battery if the power switch mode prior to the 12-volt battery being
disconnected is unknown.
If the EV system will not start even after
multiple attempts at all the methods
above, contact any authorized Toyota
retailer or Toyota authorized repairer, or
any reliable repairer.
WARNING
■Chemicals in the 12-volt battery
Batteries contain poisonous and cor-
rosive 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 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 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 skinWash the affected area thoroughly.
If you feel pain or burning, get med- ical attention immediately.

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7-3. Do-it-yourself maintenance
Maintenance and care
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.
WARNING
●If electrolyte gets on your clothes It 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 there is insufficient 12-volt battery fluid
Do not use if there is insufficient fluid in the 12-volt battery. There is a possi-ble danger that the 12-volt battery
may explode.
NOTICE
■When recharging the 12-volt bat- tery
Never recharge the 12-volt battery while the EV system is operating.
Also, be sure all accessories are turned off.
■When adding distilled water
Avoid overfilling. Water spilled during 12-volt battery recharging may cause
corrosion.
Adding the washer fluid
WARNING
■When adding washer fluid
Do not add washer fluid when the EV
system is hot or operating as washer fluid contains alcohol and may catch fire if spilled on the motor, etc.
NOTICE
■Do not use any fluid other than washer fluid
Do not use soapy water or 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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7-3. Do-it-yourself maintenance
Maintenance and care
■If the electronic key battery is
depleted
The following symptoms may occur:
●The smart entry & start system and wireless remote control will not func-tion properly.
●The operational range will be reduced.
Prepare the following before replac-
ing the battery:
 Flathead screwdriver
 Small flathead screwdriver
 Lithium battery CR2450
■Use a CR2450 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 the local laws.
NOTICE
■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 claws. Otherwise, the claws may be damaged.
Electronic key batter y
Replace the battery with a new
one if it is depleted.
Items to prepare

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7-3. Do-it-yourself maintenance
1Remove the lock and take out
the mechanical key.
2 Remove the cover.
Use a screwdriver of an appropriate size. Forcedly prying may cause the cover damaged.
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 battery.
When removing the battery, use a screwdriver of an appropriate size.
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.
Replacing the battery
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 bat- tery 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 bat-teries 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 reliable repairer.
●If you accidentally swallow a battery
or put a battery into a part of your body, get emergency medical atten-tion immediately.

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7-3. Do-it-yourself maintenance
Maintenance and care
1Turn the power switch off.
Confirm that the charging connector is not connected. Also, do not use the
Remote Air Conditioning System during the procedure.
2 Open the fuse box cover.
Motor compartment
Push the tab in and lift the lid off.
Left side instrument panel (left-
hand drive vehicles)
Remove the lid.
WARNING
■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.
■Certification for the electronic key battery
CAUTION RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN INCORRECT
TYPE. DISPOSE OF USED BATTERIES ACCORDING TO THE
INSTRUCTIONS.
NOTICE
■When replacing the battery
Use a screwdriver of appropriate size. Applying 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.
Checking and replacing
fuses
If any of the electrical compo-
nents do not operate, a fuse
may have blown. If this hap-
pens, check and replace the
fuses as necessary.
Checking and replacing
fuses

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8
When trouble arises
When trouble arises
8-1. Essential information
Emergency flashers .......... 506
If your vehicle has to be
stopped in an emergency 506
If the vehicle is submerged or
water on the road is rising
....................................... 507
8-2. Steps to take in an emer-
gency
If your vehicle needs to be
towed .............................. 509
If you think something is wrong
....................................... 513
If a warning light turns on or a
warning buzzer sounds... 515
If a warning message is dis-
played ............................. 523
If you have a flat tire ......... 528
If the EV system will not start
....................................... 539
If you lose your keys ......... 541
If the charging port lids cannot
be opened ...................... 541
If the electronic key does not
operate properly ............. 542
If the 12-volt battery is dis-
charged .......................... 544
If your vehicle overheats... 549
If the vehicle becomes stuck
....................................... 551

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8-2. Steps to take in an emergency
When trouble arises
8-2.Ste ps to take in an emerg ency
In the following situations, it is not
possible to be towed by another
vehicle using cables or chains, as
the front wheels may be locked due
to the parking lock. Contact any
authorized Toyota retailer or Toyota
authorized repairer, or any reliable
repairer or commercial towing ser-
vice.
 There is a malfunction in the shift
control system. ( P.245, 527)
 There is a malfunction in the
immobilizer system. ( P. 7 5 )
 There is a malfunction in the
smart entry & start system.
( P.542)
 The 12-volt battery is dis-
charged. ( P.544)
The following may indicate a prob-
lem with your transmission. Contact
any authorized Toyota retailer or
Toyota authorized repairer, or any
reliable repairer or commercial tow-
ing service before towing.
 The EV system warning mes-
sage is shown on the multi-infor-
mation display and the vehicle
does not move.
 The vehicle makes an abnormal
sound.
From the front (2WD models)
Release the parking brake.
Turn automatic mode off. ( P.255)
If your vehicle needs to
be towed
If towing is necessary, we rec-
ommend having your vehicle
towed by any authorized
Toyota retailer or Toyota
authorized repairer, or any reli-
able repairer or commercial
towing service, using a wheel-
lift type truck or flatbed truck.
Use a safety chain system for
all towing, and abide by all
state/provincial and local laws.
Situations when it is not
possible to be towed by
another vehicle
Situations when it is neces-
sary to contact dealers
before towing
Towing with a wheel-lift type
truck

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8-2. Steps to take in an emergency
When trouble arises
■Electric power steering system warning light (warning buzzer)
■Traction battery charge warning light
■Driver’s and front passenger’s seat belt reminder light (warning
buzzer*)
*: Driver’s and front passenger’s seat belt warning buzzer:
The driver’s and front passenger’s seat belt warning buzzer sou nds to alert the
driver and front passenger that his or her seat belt is not fas tened. If the seat belt is
unfastened, the buzzer sounds intermittently for a certain peri od of time after the
vehicle reaches a certain speed.
■Rear passengers’ seat belt reminder lights (warning buzzer*)
*: Rear passengers’ seat belt warning buzzer:
Warning lightDetails/Actions
(Red)
or
(Yellow)
Indicates a malfunction in the EPS (Electric Power Steering) sy s-
tem
 Have the vehicle inspected by any authorized Toyota
retailer or Toyota authorized repairer, or any reliable
repairer immediately.
Warning lightDetails/Actions
Indicates that the remaining charge of the traction battery is low
and charging is required
When the outside temperature is low, this light may turn on ear lier
than usual to urge the driver to charge the traction battery ea rly.
 Charge the traction battery. (P. 1 1 4 )
Warning lightDetails/Actions
Warns the driver and/or front passenger to fasten their seat belts
 Fasten the seat belt.
If the front passenger’s seat is occupied, the front passen-
ger’s seat belt also needs to be fastened to make the warn-
ing light (warning buzzer) turn off.
Warning lightDetails/Actions
Warns the rear passengers to fasten their seat belts
 Fasten the seat belt.

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8-2. Steps to take in an emergency
When trouble arises
■Parking brake indicator
■Brake hold operated indicator
■Warning buzzer
In some cases, the buzzer may not be heard due to being in a noisy location or audio sound.
■Front passenger detection sensor,
seat belt reminder and warning buzzer
●If luggage is placed on the front pas-senger seat, the front passenger detection sensor may cause the warn-
ing light to flash and the warning buzzer to sound even if a passenger
is not sitting in the seat.
●If a cushion is placed on the seat, the
sensor may not detect a passenger, and the warning light may not operate properly.
■Electric power steering system
warning light (warning buzzer)
When the 12-volt battery charge becomes insufficient or the voltage tem-
porarily drops, the electric power steer- ing system warning light may come on and the warning buzzer may sound.
■When the tire pressure warning
light comes on
Inspect the tires to check if a tire is
punctured.
If a tire is punctured: P.528
If none of the tires are punctured:
Turn the power switch off then turn it to ON. Check if the tire pressure warning light comes on or blinks.
If the tire pressure warning light blinks for approximately 1 minute then stays on
There may be a malfunction in the tire pressure warning system. Have the vehicle inspected by any authorized
Toyota retailer or Toyota authorized repairer, or any reliable repairer immedi-ately.
If the tire pressure warning light comes on
1 After the temperature of the tires has lowered sufficiently, check the infla-
tion pressure of each tire and adjust them to the specified level.
2 If the warning light does not turn off even after several minutes have
elapsed, check that the inflation pressure of each tire is at the speci-fied level and perform the tire infla-
tion pressure setting procedure. ( P.480)
If the warning light does not turn off
Warning lightDetails/Actions
(Flashes)
It is possible that the parking brake is not fully engaged or
released
 Operate the parking brake switch once again.
This light comes on when the parking brake is not released. If the
light turns off after the parking brake is fully released, the system is
operating normally.
Warning lightDetails/Actions
(Flashes)
Indicates a malfunction in the brake hold system
 Have the vehicle inspected by any authorized Toyota
retailer or Toyota authorized repairer, or any reliable
repairer immediately.