2023 TOYOTA BZ4X 12-volt battery is charged

5TABLE OF CONTENTS
Owners Manual_USA_M42C01_en
1
2
3
4
5
6
8 7
9
10
7-1. Maintenance and care Cleaning and protecting the vehicle exterior ............ 448
Cleaning and protecting the vehicle interior ............. 451
7-2. Maintenance Maintenance requirements.................................... 455
General maintenance.... 456
Emission inspection and maintenance (I/M) programs.................................... 459
7-3. Do-it-yourself maintenance Do-it-yourself service precau-tions............................. 460
Hood ............................. 462
Positioning a floor jack .. 464
Motor compartment ....... 465
Tires .............................. 472
Replacing the tire .......... 485
Tire inflation pressure.... 491
Wheels ......... .................493
Air conditioning filter ...... 494
Electronic key battery.... 497
Checking and replacing fuses .................................... 499
Headlight aim ................ 501
Light bulbs..................... 5028-1. Essential information
Emergency flashers....... 504
If your vehicle has to be stopped in an emergency.................................... 505
If the vehicle is submerged or water on the road is rising.................................... 506
8-2. Steps to take in an emer- gency
If your vehicle needs to be towed ........................... 507
If you think something is wrong........................... 511
If a warning light turns on or a warning buzzer sounds 513
If a warning message is dis- played .......................... 522
If you have a flat tire ...... 527
If the EV system will not start
.................................... 537
If you lose your keys...... 539
If the electronic key does not operate properly .......... 539
If the 12-volt battery is dis- charged ....................... 541
If your vehicle overheats 545
If the vehicle becomes stuck .................................... 547
7Maintenance and care8When trouble arises

701-4. Theft deterrent system
Owners Manual_USA_M42C01_en
●A person inside the vehicle opens
a door or hood, or unlocks the
vehicle using an inside lock but-
ton.
●The 12-volt battery is recharged or
replaced when the vehicle is
locked. (P.543)
■Alarm-operated door lock
In the following cases, depending
on the situation, th e door may auto-
matically lock to p revent improper
entry into the vehicle:
●When a person remaining in the
vehicle unlocks the door and the
alarm is activated.
●While the alarm is activated, a
person remaining in the vehicle
unlocks the door.
●When recharging or replacing the
12-volt battery.
NOTICE
■To ensure the system oper-
ates correctly
Do not modify or remove the sys-
tem. If modified or removed, the
proper operation of the system
cannot be guaranteed.

722-1. Electric vehicle system
Owners Manual_USA_M42C01_en
2-1.Electric vehicle system
The illustration is an example for explanation and may differ from the actual
item.
ESU: Electricity Supply Unit (built in onboard traction battery
charger/DC-DC converter)
Electric motor (traction motor)/Inverter (front/rear
*)
Traction battery
Provides electricity t o the electric motor.
Charging port
12-volt battery
Electric Vehicle system features
Battery electric vehicles are considerably different from con-
ventional vehicles.
They use electricity charged in a traction battery, to drive th e
electric motor. Since battery electric vehicles are driven using
electricity, they do not emit any emissions such as CO
2 (Car-
bon Dioxide) and NOx (Nitrogen Oxides). Battery electric
vehicles are environmentally friendly vehicles.
System components

732-1. Electric vehicle system
Owners Manual_USA_M42C01_en
2
Electric Vehicle system
Provides electricity to various vehicle systems such as the SRS airbags,
headlights, wipers, etc.
*: AWD models only
■When braking (regenera-
tive braking)
The electric motor (traction
motor) charges the traction bat-
tery.
The driving range can be
extended by actively using this
regenerative braking to store
electricity in the traction battery.
The battery electric vehicle is
driven using electricity, which is
received from an external power
source and stored in the traction
battery. Not only public charging
stations, but also household out-
lets can be used for charging.
Procedures are different from
refueling a conventional vehi-
cle. Therefore, make sure to
read the following thoroughly.
 Charging equipment ( P.85)
 AC charging cable ( P. 8 7 )
 Power sources that can be
used ( P.102)
 Things to know before
charging ( P.102)
 How to charge your vehicle
( P.105, 113)
 When charging cannot be
performed normally ( P.133)■Regenerative braking
In the following situ ations, kinetic
energy is converted to electric
energy and deceler ation force can
be obtained in con junction with the
recharging of the traction battery.
●The accelerator pedal is released
while driving with the shift position
in D.
●The brake pedal is depressed
while driving with the shift position
in D.
■Charging the 12-volt battery
The 12-volt battery is charged from
the traction battery when the EV
system is operated or while the trac-
tion battery is being charged.
If the vehicle has not been used for
a long time, the 12- volt battery may
become low due to self-discharge. If
this occurs, follow the correct proce-
dures. ( P.541)
■When not using t he vehicle for
an extended period of time
●When the vehicle will not be used
for an extended period of time,
charge the traction battery once a
month.
This protects the traction battery
from extreme voltage decline due
to self discharging.
●When the vehicle will not be used
for an extended period of time, the
12-volt battery will be charged
from the traction battery to reduce
the risk of the 12- volt battery dis-
charged. In this c ase, the cooling
fan may operate, however it is not
a malfunction.
●To p r e v e n t t h e 1 2 - v o l t b a t t e r y f r o m
being discharged, do not leave the
charging port lid open or the
charging cable connected to the
vehicle.
Charging

802-1. Electric vehicle system
Owners Manual_USA_M42C01_en
When a certain level of impact is
detected by the impact sensors,
the emergency shut off system turns off the EV system and
blocks the high voltage current.
If the emergency shut off system
activates, your vehicle will not
restart. To restart the EV sys-
tem, contact your Toyota dealer.
A message is automatically dis-
played when a malfunction
occurs in the EV system or an
improper operation is attempted.
If a warning message is shown
on the multi-information display,
read the message and follow the
instructions. (
P.140, 522)
■If a warning light comes on, a
warning message is displayed,
or the 12-volt battery is discon-
nected
The EV system may not start.
In that case, try to start the system
again. If the “READY” indicator does
not come on, contact your Toyota
dealer.
■When the traction battery is
completely discharged
When the EV system cannot be
started due to the traction battery
being completely discharged, restart
the system after AC charging or DC
charging. When charging, it is rec-
WARNING
■Caution while driving
●Pay special attention to the area
around the vehicle. Because
there is no engine noise, pedes-
trians, people riding bicycles or
other people and vehicles in the
area may not be aware of the
vehicle starting off or approach-
ing them, so take extra care
while driving. Therefore, take
extra care while driving even if
the Acoustic Vehicle Alerting
System is active.
●If the vehicle under floor area
receives strong shock or impact
while driving, stop the vehicle in
a safe place and check around
the bottom of the vehicle. If
there is damage to the traction
battery or liquid leakage, it may
lead to a vehicle fire, etc. Do not
touch the vehicle and immedi-
ately contact your Toyota dealer.
Even if no damage can be seen
under the floor, the traction bat-
tery may be damaged. If the
vehicle received an impact
under the floor, have the traction
battery inspected at a Toyota
dealer.
■Modifications
Do not make modifications that
lower the height of the vehicle.
The traction battery in the under
floor area may come into contact
with the ground when the height
of vehicle is lowered. If the trac-
tion battery is damaged, a vehicle
fire may occur, possibly resulting
in death or serious injury.
Emergency shut off sys-
tem
Warning message

1042-2. Charging
Owners Manual_USA_M42C01_en
●Avoid frequent DC charging
Also, if the capacit y of the traction
battery capacity reduces, the dis-
tance that can be driven decreases.
However, vehicle performance does
not significantly become worse.
■When the remaining charge of
the traction battery is low after
charging
In the following situations, the
remaining charge of the traction bat-
tery after charging completes may
be less than normal in order to pro-
tect the traction bat tery (the driving
range after the battery is fully
charged may be shorter).
*
●Charging is perf ormed when the
outside temperature is low or high
●Charging is perf ormed immedi-
ately after high-l oad driving or in
extreme heat
In any other situati on, if the remain-
ing charge of the traction battery is
significantly lower than normal after
charging completes, have the vehi-
cle inspected by your Toyota dealer.
*: When this occurs, even if the remaining charge display of the
traction battery shows that it is
fully charged, the remaining
charge rapidly decreases faster
than normal.
■When the charging amount sent
to the traction battery
decreases
When the amount of power supplied
by the charger is low or operation of
the battery heater, etc., reduces the
charging power sent to the traction
battery, the charging amount sent to
the traction battery may decrease.
■Certification
This device complies with Part 15 of
the FCC Rules. Operation is subject
to the following two conditions:
(1) this device may not cause harm- ful interference, and (2) this device
must accept any interference
received, including interference that
may cause undesired operation.
■Charging time may increase
In the following situ ations, charging
time may become longer than nor-
mal:
●In very hot or very cold tempera-
tures.
●When the traction battery
becomes hot, such as immedi-
ately after high-load driving.
●The vehicle is consuming a lot of
electricity, for e xample, when the
headlights are on, etc.
●When using “My Room Mode”.
(  P.129)
●There is a power outage during
charging.
●There is an interruption in the
electrical supply.
●There is a drop in the voltage of
external power source.
●The charge in the 12-volt battery
is low, for example due to the
vehicle being left unused for a
long period of time.
●When the upper limit of charging
current is changed in the charging
current setting of the vehicle
( P.108)
●When the battery heater operates.
( P. 9 9 )
●When the “Battery Cooler” is oper-
ated before charging. ( P. 9 9 )
●When the plug generates heat
due to a loose outlet connection,
etc.
●When adjusting the power supply
with the charger.
●When frequently and repeatedly
using DC charging.
●When selecting “DC charging
power” setting other than “MAX”.
●When the temperature of
charging-related parts is high.

1252-2. Charging
Owners Manual_USA_M42C01_en
2
Electric Vehicle systemFor details on how to operate
the audio system screen, refer
to “MULTIMEDIA OWNER’S
MANUAL”.
Setting operations related to the
charging schedule are per-
formed on the “Charging sched-
ule” screen.
■Displaying the “Charging
schedule” screen
1 Turn the power switch ON
and display the menu screen.
It is not possible to control the Charging Schedule settings in
Accessory Mode.
“POWER ON”
2 Select and “Charging
schedule”, in that order. The
“Charging schedule” screen
will be displayed.
■How to read the “Charging schedule” screen
NOTICE
■While performing the setting
operation
When performing the setting
operation while t he EV system is
stopped, be careful that the
12-volt battery will not be dis-
charged.
Setting operations on
multimedia

1292-2. Charging
Owners Manual_USA_M42C01_en
2
Electric Vehicle system
Next event will be displayed
according to the charging
schedule settings.
When press “OK”, close Next
charging event screen.
When press “Charge Now”,
charge now is turned on.
■When all charging schedules
are turned off
The icon is not displayed on the
“Charging schedule” screen.
The icon will be displayed by turning
it ON on the “Events” screen.
■When charging schedule set-
ting operations are canceled
When the vehicle is in the following
conditions, charging schedule set-
ting operations are canceled.
●The power switch is turned off
before the setting s are confirmed
●The vehicle starts off
●A display with a higher priority
than that of the charging schedule
setting is shown
1Connect the charge cable to
the vehicle to start charging.
AC Charging: P. 1 0 5
DC Charging: P. 1 1 3
2 Turn the power switch to ON
while charging.
My Room Mode settings is auto-
matically display ed on the multi-
information display.
3 Operate the meter control
switches to select “Yes”, and
then press “OK”.
My Room Mode is started and it is
possible to use the air conditioning
system, audio system, etc.
Select “No” and press “OK” when
My Room Mode is not being used.
To disable My Room Mode, turn the
power switch off.
My Room Mode will automatically
be off when DC charging is com-
pleted.
When starting My Room Mode,
NOTICE
■While performing the setting
operation
When performing the setting
operation while t he EV system is
stopped, be careful that the
12-volt battery will not be dis-
charged.
Using My Room Mode
When the charging cable is
connected to the vehicle,
electrical components such
as the air conditioning sys-
tem and audio system can
be used by the power sup-
ply from an external power
source.
Starting My Room Mode
Display information for
electric power balance
during My Room Mode