2022 TOYOTA BZ4X light

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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
Maintenance and care
1Pull the hood lock release lever.
The hood will pop up slightly.
2Pull up the auxiliary catch lever
to the left and lift the hood.
3 Hold the hood open by inserting
the supporting rod into the slot.Hood
Opening the hood
WARNING
■Pre-driving check
Check that the hood is fully closed
and locked. If the hood is not locked properly, it may open while the vehicle is in
motion and cause an accident, which may result in death or serious injury.
■After installing the support rod into the slot
Make sure the rod is properly inserted
into the slot to prevent the hood from shutting on your head or body.
■When closing the hood
When closing the hood, take extra care to prevent your fingers etc., from
being caught.

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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
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.
 When “Immediately Check tyre
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.
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 multi-infor-
mation display.
■How to change the unit
1 Park the vehicle in a safe place
and EV system off.
2 Start the EV system.
Changing the unit cannot be performed
while the vehicle is moving.
3 Press or of the meter
control switch to select .
4 Press or of the meter
control switches and select
“Vehicle Settings” and then
press and hold “OK”.
5 Press or of the meter
control switches and select
“TPWS setting” and then press
“OK”.
6 Press or of the meter
control switches and select “Set-
ting Unit” and then press “OK”.
7 Press or of the meter
control switches and select the
desired unit and then press
“OK”.
■Routine tire inflation pressure checks
The tire pressure warning system does
not replace routine tire inflation pressure checks. Make sure to check tire inflation pressure as part of your routine of daily
vehicle checks.
■Tire inflation pressure
●It may take a few minutes to display
the tire inflation pressure after the power switch is turned to ON. It may

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7-3. Do-it-yourself maintenance
Maintenance and care
also take a few minutes to display the
tire inflation pressure after inflation pressure has been adjusted.
●Tire inflation pressure changes with temperature.The displayed values may also be dif-
ferent from the values measured using a tire pressure gauge.
■Situations in which the tire pres-sure warning system may not oper-
ate properly
●In the following cases, the tire pres-
sure warning system may not operate properly.• If non-genuine Toyota wheels are
used. • A tire has been replaced with a tire that is not an OE (Original Equipment)
tire. • A tire has been replaced with a tire that is not of the specified size.
• Tire chains etc. are equipped. • If a window tint that affects the radio wave signals is installed.
• If there is a lot of snow or ice on the vehicle, particularly around the wheels or wheel housings.
• If the tire inflation pressure is extremely higher than the specified level.
• If wheels without tire pressure warning valves and transmitters are used.• If the ID code on the tire pressure
warning valves and transmitters is not registered in the tire pressure warning computer.
●Performance may be affected in the following situations.
• Near a TV tower, electric power plant, gas station, radio station, large dis-play, airport or other facility that gen-
erates strong radio waves or electrical noise• When carrying a portable radio, cellu-
lar phone, cordless phone or other wireless communication device
If tire position information is not correctly
displayed due to the radio wave condi-
tions, the display may be corrected by
driving and changing the radio wave
conditions.
●When the vehicle is parked, the time taken for the warning to start or go off could be extended.
●When tire inflation pressure declines rapidly for example when a tire has
burst, the warning may not function.
When replacing tires or wheels, tire
pressure warning valves and trans-
mitters must also be installed.
When new tire pressure warning valves
and transmitters are installed, new ID
codes must be registered in the tire
pressure warning computer and the tire
pressure warning system must be ini-
tialized. ( P.484)
■When replacing the tires and wheels
If the ID code of the tire pressure warn-
ing valve and transmitter is not regis- tered, the tire pressure warning system will not work properly. After driving for
about 10 minutes, the tire pressure warning light blinks for 1 minute and
stays on to indicate a system malfunc- tion.
Installing tire pressure warn-
ing valves and transmitters

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7-3. Do-it-yourself maintenance
Maintenance and care
7Press or of the meter
control switches and select
“OK”, and then press “OK”.
A message is displayed on the multi- information display. Also, “--” is dis-
played for inflation pressure of each tire on the multi-information display while the tire pressure warning system deter-
mines the position.
“Setting Pressure Wait a
Moment”
8 Drive at approximately 40 km/h
(25 mph) or more for approxi-
mately 10 to 30 minutes.
When wheel position registration is
complete, the inflation pressure of each tire will be displayed on the multi-infor-mation display.
Even if the vehicle is not driven at approximately 40 km/h (25 mph) or more, registration can be completed by
driving for a long time. However, if ini- tialization does not complete after driv-ing for 1 hour or more, park the vehicle
in a safe place for approximately 15 minutes and then drive the vehicle again.
■When performing wheel position
registration
●Normally, wheel position registration
can be completed within approxi- mately 30 minutes.
●Wheel position registration is per-
formed while driving at a vehicle
speed of approximately 40 km/h (25 mph) or more.
■The initialization operation
●If the power switch is turned off while registering the wheel position, the next time the power switch is turned to
ON, the wheel position registration will resume and it will not be necessary to restart the procedure.
●While the position of each tire is being determined and the inflation pres-
sures are not being displayed on the multi-information display, if the infla-tion pressure of a tire drops, the tire
pressure warning light will come on.
■If the tire pressure warning system is not registered properly
●In the following situations, wheel posi-tion registration may take longer than usual to be completed or may not be
possible. • Vehicle is not driven at approximately 40 km/h (25 mph) or more
• Vehicle is driven on unpaved roads
If initialization does not complete after
driving for 1 hour or more, park the vehi-
cle in a safe place for approximately 15
minutes and then drive the vehicle
again.
●If the vehicle is reversed during wheel
position registration, all data collected until then will be cleared. Perform driv-ing again.
■When you need to setting the
tire pressure
In the following situations, it will be
necessary to perform the tire infla-
tion pressure setting procedure of
the tire pressure warning system.
 When the specified tire inflation
pressure has changed, such as
Setting the tire pressure

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7-3. Do-it-yourself maintenance
due to carried load, etc.
 When the tire inflation pressure
is changed such as when the tire
size is changed.
If the tire inflation pressure has
been adjusted to the specified
level, perform the tire inflation set-
ting procedure by selecting speci-
fied inflation pressure on the multi-
information display.
When the tire inflation pressure is
to be other than specified, such as
when tires other than the specified
size are used, etc., set the tire infla-
tion pressure using the current
pressure. Make sure to adjust the
tire inflation pressure of each tire to
the appropriate level before per-
forming tire pressure setting. The
tire pressure warning system oper-
ates based on this tire inflation
pressure.
■Setting by selecting a speci-
fied tire inflation pressure
1 Start the EV system (P.243)
The tire inflation pressure cannot be set while the vehicle is moving.
2 Press or of the meter
control switches and select .
3 Press or of the meter
control switches and select
“Vehicle Settings”, and then
press and hold the “OK”.
4 Press or of the meter
control switches and select
“TPWS Setting”, and then press
“OK”.
5 Press or of the meter
control switches and select
“Tyre Pressure Setting”, and
then press “OK”.
6 Press or of the meter
control switches and select “Set-
ting by Specified Pressure”, and
then press “OK”.
Select the desired front and rear tire
pressures.
7 Press or of the meter
control switches and select
“OK”, and then press “OK”.
The tire pressure warning light will slowly blink 3 times and a message
indicating that tire inflation pressure is being set will be displayed on the multi-information display.
After setting the tire inflation pressure, a message indicating that setting has been completed will be displayed on
the multi-information display.
“Setting Pressure Wait a
Moment”

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7-3. Do-it-yourself maintenance
Maintenance and care
■Setting using the current tire
inflation pressure
1 Adjust the tire inflation pressure
to the specified cold tire inflation
pressure level.
Make sure to adjust the tire pressure to
the specified cold tire inflation pressure level. The tire pressure warning system will operate based on this pressure
level.
2 Start the EV system (P.243)
The tire inflation pressure cannot be set while the vehicle is moving.
3 Press or of the meter
control switches and select .
4 Press or of the meter
control switches and select
“Vehicle Settings”, and then
press and hold the “OK”.
5 Press or of the meter
control switches and select
“TPWS Setting”, and then press
“OK”.
6 Press or of the meter
control switches and select
“Tyre Pressure Setting”, and
then press “OK”.
7 Press or of the meter
control switches and select “Set-
ting by Current Pressure” and
then press “OK”.
8 Press or of the meter
control switches and select
“OK”, and then press “OK”.
The tire pressure warning light will slowly blink 3 times and a message
indicating that tire inflation pressure is being set will be displayed on the multi-information display.
After setting the tire inflation pressure, a message indicating that setting has been completed will be displayed on
the multi-information display.
“Setting Pressure Wait a
Moment”
■Warning performance of the tire pressure warning system (Setting
using the current tire inflation pres- sure)
●When performing the tire pressure setting using the current tire inflation pressure, the warning timing of the tire
pressure warning system will vary according to the conditions under which tire pressure setting was per-
formed. Therefore, a warning may be output even if the tire inflation pres-
sure drops slightly or if the tire inflation pressure increases above that when the tire inflation pressure was set.
●Make sure to perform the tire pressure setting procedure after adjusting the
tire inflation pressure. Also, make sure the tires are cold before performing the tire pressure setting procedure or
adjusting the tire inflation pressure.