FLUID TOYOTA BZ4X 2022 (in English) User Guide

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7-3. Do-it-yourself maintenance
WARNING
The motor compartment contains many mechanisms and fluids that
may move suddenly, become hot, or become electrically energized. To avoid death or serious injury, observe
the following precautions.
■When working on the motor com-
partment
●Make sure that “POWER ON” on the multi-information display and
the “READY” indicator are both off.
●Keep hands, clothing and tools
away from the moving fan.
●Be careful not to touch the motor,
power control unit, radiator, etc., right after driving as they may be hot. Coolant and other fluids may
also be hot.
●Do not leave anything that may
burn easily, such as paper and rags, in the motor compartment.
●Do not smoke, cause sparks or expose an open flame to the 12-volt battery. 12-volt battery fumes are
flammable.
●Be extremely cautious when work-
ing on the 12-volt battery. It con- tains poisonous and corrosive sulfuric acid.
●Never touch, disassemble, remove or replace the high voltage parts,
cables and their connectors. It can cause severe burns or electric shock that may result in death or
serious injury.
●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 fan or radiator grille
Be sure the power switch is OFF.
With the power switch in ON, the electric cooling fan may automatically start to run if the air conditioning is on
and/or the coolant temperature is high. ( P.471)
■Safety glasses
Wear safety glasses to prevent flying or falling material, fluid spray, etc.,
from getting in your eyes.
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 or when the fluid level in the accumulator is high.
If the reservoir needs frequent refill- ing, it may indicate a serious problem.

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7-3. Do-it-yourself maintenance
Heater coolant reservoir (P.470)
Washer fluid tank ( P.475)
Power control unit coolant reservoir ( P.472)
12-volt battery ( P.473)
Fuse box ( P.501)
Radiator ( P.471)
Condenser ( P.471)
Electric cooling fan
The coolant level is satisfactory if it
is between the “MAX” and “MIN”
lines on the reservoir when the EV
system is cold.
Motor compartment
Components
Checking the heater coolant

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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
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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8-2. Steps to take in an emergency
When trouble arises
Fluid leaks under the vehicle
(Water dripping from the air con-
ditioning after use is normal.)
 Flat-looking tires or uneven tire
wear
 Excessive tire squeal when cor-
nering
 Strange noises related to the
suspension system
 Other noises related to the EV
system
 Stumbling or running roughly
 Appreciable loss of power
 Vehicle pulls heavily to one side
when braking
 Vehicle pulls heavily to one side
when driving on a level road
WARNING
■While towing
●When towing using cables or
chains, avoid sudden starts, etc., which place excessive stress on the towing eyelets, cables or chains.
The towing eyelets, cables or chains may become damaged, bro-ken debris may hit people, and
cause serious damage.
●Do not perform any of the following
as doing so may cause the parking lock mechanism to engage, locking the front wheels and possibly lead-
ing to an accident resulting in death or serious injury:
• Unfasten the driver’s seat belt and open the driver’s door.
• Turn the power switch off.
■Installing towing eyelets to the
vehicle
Make sure that towing eyelets are installed securely. If not securely
installed, towing eyelets may come loose during towing.
NOTICE
■To prevent damage to the vehicle during emergency towing
Do not secure cables or chains to the
suspension components.
If you think something is
wrong
If you notice any of the follow-
ing symptoms, your vehicle
probably needs adjustment or
repair. Contact any authorized
Toyota retailer or Toyota
authorized repairer, or any reli-
able repairer as soon as possi-
ble.
Visible symptoms
Audible symptoms
Operational symptoms

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8-2. Steps to take in an emergency
When trouble arises
■Brake system warning light (warning buzzer)
■Brake system warning light
■Charging system warning light*
*: This light illuminates on the multi-information display with a message.
If a warning light turns on or a warning buzzer sounds
Calmly perform the following actions if any of the warning lights
comes on or flashes. If a light comes on or flashes, but then g oes
off, this does not necessarily indicate a malfunction in the sy stem.
However, if this continues to o ccur, have the vehicle inspected by
any authorized Toyota retailer or Toyota authorized repairer, o r any
reliable repairer.
Actions to the warning lights or warning buzzers
Warning lightDetails/Actions
(Red)
Indicates that:
 The brake fluid level is low; or
 The brake system is malfunctioning
 Immediately stop the vehicle in a safe place and contact
any authorized Toyota retailer or Toyota authorized
repairer, or any reliable repairer. Continuing to drive the
vehicle may be dangerous.
Warning lightDetails/Actions
(Yellow)
Indicates a malfunction in:
 The regenerative braking system;
 The electronically controlled brake system; or
 The parking brake system
 Have the vehicle inspected by any authorized Toyota
retailer or Toyota authorized repairer, or any reliable
repairer immediately.
Warning lightDetails/Actions
Indicates 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
repairer, or any reliable repairer.

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8-2. Steps to take in an emergency
For details, consult with at any autho-
rized Toyota retailer or Toyota autho- rized repairer, or any reliable repairer as soon as possible.
WARNING
■When removing the 12-volt bat-tery terminals
Always remove the negative (-) termi-
nal first. If the positive (+) terminal contacts any metal in the surrounding area when the positive (+) terminal is
removed, a spark may occur, leading to a fire in addition to electrical shocks and death or serious injury.
■Avoiding 12-volt battery fires or explosions
Observe the following precautions to prevent accidentally igniting the flam-mable gas that may be emitted from
the 12-volt battery:
●Make sure each jumper cable is connected to the correct terminal
and that it is not unintentionally in contact with any other than the intended terminal.
●Do not allow the other end of the jumper cable connected to the “+”
terminal to come into contact with any other parts or metal surfaces in the area, such as brackets or
unpainted metal.
●Do not allow the + and - clamps of
the jumper cables to come into con- tact with each other.
●Do not smoke, use matches, ciga-rette lighters or allow open flame near the 12-volt battery.
■12-volt battery precautions
The 12-volt battery contains poison- ous and corrosive acidic electrolyte,
while related parts contain lead and lead compounds. Observe the follow-ing precautions when handling the
12-volt battery:
●When working with the 12-volt bat- tery, always wear safety glasses
and take care not to allow any bat- tery fluids (acid) to come into con-tact with skin, clothing or the vehicle
body.
●Do not lean over the 12-volt battery.
●In the event that battery fluid (acid) comes into contact with the skin or
eyes, immediately wash the affected area with water and seek medical attention.
Place a wet sponge or cloth over the affected area until medical attention can be received.
●Always wash your hands after han-dling the 12-volt battery and other
battery-related parts.
●Do not allow children near the 12-
volt battery.
■When replacing the 12-volt bat-
tery
●When the vent plug is close to the hold down clamp, the battery fluid
(acid) may leak.
●For information regarding battery
replacement, contact any autho- rized Toyota retailer or Toyota authorized repairer, or any reliable
repairer.
NOTICE
■When handling jumper cables
When connecting the jumper cables,
ensure that they do not become entangled in the cooling fan.

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8-2. Steps to take in an emergency
When trouble arises
1Stop the vehicle in a safe place
and turn off the air conditioning
system.
2 Leave the EV system operating
and carefully lift the hood.
3 Check if the cooling fan is oper-
ating.
If the fan is operating:
Wait until the “EV System over-
heated Output power reduced”
message disappears and then
stop the EV system. If the mes-
sage does not disappear, call
any authorized Toyota retailer or
Toyota authorized repairer, or
any reliable repairer.
If the fan is not operating:
Stop the EV system immediately
and call any authorized Toyota
retailer or Toyota authorized
repairer, or any reliable repairer.
4 After the EV system has cooled
down, inspect the hoses and
radiator core (radiator) for any
leaks.
Radiator
Cooling fan
If a large amount of coolant leaks,
immediately contact any authorized
Toyota retailer or Toyota authorized
repairer, or any reliable repairer.
If your vehicle overheats
When “EV System overheated
Output power reduced” is
shown on the multi-informa-
tion display, your vehicle may
be overheating.
NOTICE
■Cooling system coolant
The radiator coolant is exclusive for radiator usage. Damage may occur when water or any other type of cool-
ant is used, so never use any other fluid. When there is no “Toyota Genu-ine Traction Battery Coolant”, immedi-
ately contact any authorized Toyota retailer or Toyota authorized repairer, or any reliable repairer.
Correction procedures

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9-1. Specifications
*: The fluid capacity is a reference quantity.
If replacement is necessary, contact any authorized Toyota reta iler or Toyota
authorized repairer, or any reliable repairer.
*: The fluid capacity is the quantity of reference.
If replacement is necessary, contact any authorized Toyota reta iler or Toyota
authorized repairer, or any reliable repairer.
Charging rates:
Quick charge
Slow charge
15 A max.
5 A max.
Front eAxle
Fluid capacity*3.9 L (4.1 qt., 3.4 Imp.qt.)
Fluid typee-Transaxle Fluid TE
NOTICE
■Front eAxle fluid type
Using transaxle fluid other than the above type may cause abnor mal noise or
vibration, or ultimately damage the front eAxle of your vehicle .
Rear eAxle (AWD models)
Fluid capacity*3.1 L (3.3 qt., 2.7 Imp. qt.)
Fluid typee-Transaxle Fluid TE
NOTICE
■Rear eAxle fluid type
Using transaxle fluid other than the above type may cause abnor mal noise or
vibration, or ultimately damage the rear eAxle of your vehicle.
Brakes
Pedal clearance*158 mm (2.28 in.) Min.*3
62 mm (2.44 in.) Min.*4
Pedal free play1.0 - 6.0 mm (0.04 - 0.24 in.)

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9-1. Specifications
Vehicle specifications
*1: Minimum pedal clearance when depressed with a force of 300 N (31 kgf, 66 lbf)
while the EV system is operating.
*2: Make sure to confirm that the brake system warning light (yell ow) does not illumi-
nate. (If the brake system warning light illuminates, refer to P.515)
*3: Left-hand drive vehicles
*4: Right-hand drive vehicles
18-inch tires
20-inch tires
Parking brake indicator*2
When pushing the parking brake switch for 1 to
4 seconds: turns off
When pulling the parking brake switch for 1 to 4
seconds: comes on
Fluid typeSAE J1703 or FMVSS No.116 DOT 3
SAE J1704 or FMVSS No. 116 DOT 4
Steering
Free playLess than 30 mm (1.2 in.)
Tires and wheels
Tire size235/60R18 103H
Tire inflation pressure
(Recommended cold tire inflation
pressure)
Front: 260 kPa (2.6 kgf/cm2 or bar, 38 psi)
Rear: 260 kPa (2.6 kgf/cm2 or bar, 38 psi)
Wheel size18  7 1/2 J
Wheel bolt torque140 N•m (14.3 kgf•m, 103 ft•lbf)
Tire size235/50R20 104V XL
Tire inflation pressure
(Recommended cold tire inflation
pressure)
Front: 260 kPa (2.6 kgf/cm2 or bar, 38 psi)
Rear: 260 kPa (2.6 kgf/cm2 or bar, 38 psi)
Wheel size20  7 1/2 J
Wheel bolt torque140 N•m (14.3 kgf•m, 103 ft•lbf)