2023 TOYOTA BZ4X change key battery

1694-2. Opening, closing and locking the doors
Owners Manual_USA_M42C01_en
4
Before driving
by a finger, touch the lock sensor
with the palm.
When gloves are being worn,
remove the gloves.
■Door lock buzzer
If an attempt to lock the doors using
the smart key system is made when
a door other than t he door you are
locking is open, a buzzer sounds
continuously for 5 seconds. Fully
close all the doors, and lock the
vehicle once more.
■Setting the alarm (if equipped)
Locking the doors will set the alarm
system. ( P.69)
■Conditions affecting the opera-
tion of the smart key system or
wireless remo te control
 P. 1 8 8
■If the smart key system or the
wireless remote control does
not operate properly
●Use the mechanical key to lock
and unlock the doors. ( P.539)
●Replace the key battery with a
new one if it is depleted. ( P.497)
■If the 12-volt battery is dis-
charged
The doors cannot be locked and
unlocked using the smart key sys-
tem or wireless remote control. Lock
or unlock the doors using the
mechanical key. ( P.539)
■Rear seat reminder function
●In order to remind you not to for-
get luggage, etc., in the rear seat,
when the power switch is turned to
OFF after any of the following con-
ditions are met, a buzzer will sound and a message will be dis-
played on the multi-information
display for approximately 6 sec-
onds.
• The EV system is started within 10 minutes after opening and closing
a rear door.
• A rear door has been opened and closed after the EV system was
started.
However, if a rear door is opened
and then closed within approxi-
mately 2 seconds, the rear seat
reminder function may not operate.
●The rear seat reminder function
determines that luggage, etc., has
been placed in a rear seat based
on opening and closing of a rear
door. Therefore, depending on the
situation, the rear seat reminder
function may not operate and you
may still forget l uggage, etc., in
the rear seat, or it may operate
unnecessarily.
●The rear seat reminder function
can be enabled/disabled.
(  P.566)
■Customization
Settings (e.g. unlocking function
using a key) can be changed.
(Customizable features:  P.569)
WARNING
■To prevent an accident
Observe the following precautions
while driving the vehicle.
Failure to do so may result in a
door opening and an occupant
could be thrown out of the vehicle,
resulting in death o r serious injury.
●Ensure that all doors are prop-
erly closed and locked.

1894-2. Opening, closing and locking the doors
Owners Manual_USA_M42C01_en
4
Before driving
tact with, or is covered by the fol-
lowing metallic objects
• Cards to which al uminum foil is
attached
• Cigarette boxes that have alumi- num foil inside
• Metallic wallets or bags
• Coins
• Hand warmers made of metal
• Media such as CDs and DVDs
●When another wireless key (that
emits radio waves) is being used
nearby
●When carrying the electronic key
together with the following devices
that emit radio waves
• Portable radio, cellular phone, cordless phone or other wireless
communication devices
• Another electronic key or a wire- less key that emits radio waves
• Personal computers or personal
digital assistants (PDAs)
• Digital audio players
• Portable game systems
●If window tint with a metallic con-
tent or metallic objects are
attached to the rear window
●When the electronic key is placed
near a battery charger or elec-
tronic devices
●When the vehicle is parked in a
pay parking spot where radio
waves are emitted.
■Note for the entry function
●Even when the electronic key is
within the effective range (detec-
tion areas), the system may not
operate properly in the following
cases:
• The electronic key is too close to the window or outside door han-
dle, near the ground, or in a high
place when the doors are locked
or unlocked.
• The electronic key is on the instru- ment panel, luggage cover or
floor, or in the door pockets or
glove box when the EV system is
started or power switch modes are
changed.
●Do not leave the electronic key on
top of the instrument panel or near
the door pockets when exiting the
vehicle. Depending on the radio
wave reception conditions, it may
be detected by the antenna out-
side the cabin and the door will
become lockable from the outside,
possibly trapping the electronic
key inside the vehicle.
●As long as the electronic key is
within the effective range, the
doors may be locked or unlocked
by anyone. However, only the
doors detecting the electronic key
can be used to lo ck or unlock the
vehicle.
●Even if the electro nic key is not
inside the vehicle, it may be possi-
ble to start the EV system if the
electronic key is near the window.
●The doors may unlock if a large
amount of water splashes on the
door handle, such as in the rain or
in a car wash when the electronic
key is within the effective range.
(The doors will au tomatically be
locked after approximately 60 sec-
onds if the doors are not opened
and closed.)
●If the wireless remote control is
used to lock the doors when the
electronic key is near the vehicle,
there is a possib ility that the door
may not be unlocked by the entry
function. (Use the wireless remote
control to unlock the doors.)
●Touching the door lock sensor
while wearing gloves may delay or
prevent lock operation. Remove
the gloves and touch the lock sen-
sor again.
●When the lock operation is per-
formed using the lock sensor, rec-
ognition signals will be shown up
to two consecutive times. After
this, no recognition signals will be
given.
●If the door handle becomes wet
while the electronic key is within
the effective range, the door may

1904-2. Opening, closing and locking the doors
Owners Manual_USA_M42C01_enlock and unlock repeatedly. In that
case, follow the fo
llowing correc-
tion procedures to wash the vehi-
cle:
• Place the electronic key in a loca- tion 6 ft. (2 m) or more away from
the vehicle. (Take care to ensure
that the key is not stolen.)
• Set the electronic key to battery-
saving mode to disable the smart
key system. ( P.188)
●If the electronic key is inside the
vehicle and a door handle
becomes wet during a car wash, a
message may be shown on the
multi-informatio n display and a
buzzer will sound outside the vehi-
cle. To turn off the alarm, lock all
the doors.
●The lock sensor may not work
properly if it com es into contact
with ice, snow, mud, etc. Clean
the lock sensor and attempt to
operate it again.
●A sudden approach to the effec-
tive range or door handle may pre-
vent the doors from being
unlocked. In this case, return the
door handle to the original position
and check that the doors unlock
before pulling the door handle
again.
●If there is another electronic key in
the detection area, it may take
slightly longer to unlock the doors
after the door handle is gripped.
■When the vehicle is not driven
for extended periods
●To prevent theft of the vehicle, do
not leave the electronic key within
6 ft. (2 m) of the vehicle.
●The smart key system can be
deactivated in advance. ( P.569)
●Battery-saving mode can reduce
the power consumption of elec-
tronic keys. ( P.188)
■To operate the system properly
Make sure to carry the electronic
key when operating the system. Do
not get the electronic key too close to the vehicle when operating the
system from the out
side of the vehi-
cle.
Depending on the position and hold-
ing condition of the electronic key,
the key may not be detected cor-
rectly and the system may not oper-
ate properly. (The alarm may go off
accidentally, or the door lock pre-
vention may not operate.)
■If the smart key system does
not operate properly
●If the doors cannot be locked or
unlocked, perform the following.
• Bring the electronic key close to the door handle and perform a
lock or unlock operation.
• Use the wireless remote control.
If the doors cannot be locked or
unlocked by perform the above, use
the mechanical key. ( P.539)
However, if the mechanical key is
used while the alarm system is set,
the warning will sound. ( P. 6 9 )
●If the EV system cannot be
started, refer to P.540
■Customization
Settings (e.g. smart key system)
can be changed.
(Customizable features: P.569)
If the smart key system has been
deactivated in a customized setting,
refer to the explanations for the fol-
lowing operations.
●Locking and unlocking the doors:
Use the wireless remote control or
mechanical key. ( P.167, 539)
●Starting the EV system and
changing power switch modes:
P. 5 4 0
●Stopping the EV system: P. 2 3 3

2325-2. Driving procedures
Owners Manual_USA_M42C01_enshown on the multi-information
display, read the message and fol-
low the instructions.
●If the door is unlocked with the
mechanical key, the EV system
cannot be started using the smart
key system. Refer to P.540 to start
the EV system. However, if the
electronic key is carried inside the
vehicle and the do
ors are locked
(  P.170), the EV system can be
started.
■When the ambient temperature
is low, such as during winter
driving conditions
●When starting the EV system, the
flashing time of the “READY” indi-
cator may be long. Leave the
vehicle as it is until the “READY”
indicator is steady on, as steady
means the vehicle is able to move.
●When the traction battery is
extremely cold (below approxi-
mately -22°F [-30°C]) under the
influence of the outside tempera-
ture, it may not be possible to start
the EV system. In this case, try to
start the EV system again after the
temperature of the traction battery
increases due to the outside tem-
perature increase, etc.
■Sounds and vibrations specific
to an battery electric vehicle
 P. 7 4
■If the 12-volt battery is dis-
charged
The EV system cannot be started
using the smart key system. Refer
to P.541 to restart the EV system.
■Electronic key battery depletion
 P. 1 6 2
■Conditions affecting operation
 P. 1 8 8
■Note for the entry function
 P. 1 8 9
■If there is a malfunction in the
smart key system
If “Smart Key System Malfunction”
is displayed on the multi-information
display, the system may be malfunc-
tioning. Have the vehicle inspected
by your Toyota dealer immediately.
■If the “READY” indicator does
not come on
In the event that the “READY” indi-
cator does not come on even after
performing the proper procedures
for starting the vehicle, contact your
Toyota dealer immediately.
■If the EV system is malfunction-
ing
 P. 8 0
■Electronic key battery
 P.497
■Operation of the power switch
●If the switch is not pressed shortly
and firmly, the power switch mode
may not change or the EV system
may not start.
●If attempting to restart the EV sys-
tem immediately after turning the
power switch to OFF, the EV sys-
tem may not start in some cases.
After turning the power switch to
OFF, please wait a few seconds
before restarti ng the EV system.
■Customization
If the smart key system has been
deactivated in a customized setting,
refer to P.540.
WARNING
■When starting the EV system
Always start the EV system while
sitting in the driver’s seat. Do not
depress the accelerator pedal
while starting the EV system
under any circumstances.
Doing so may cause an accident
resulting in death o r serious injury.

2495-3. Operating the lights and wipers
Owners Manual_USA_M42C01_en
5
Driving
■Automatic light off system
●When the headlights are on: The
lights turn off 30 seconds after the
power switch is turned to ACC or
OFF and a door is opened and
closed. (The lights turn off immedi-
ately if on the key is
pressed after all the doors are
closed.)
●When only the tail lights are on:
The tail lights tu rn off automati-
cally if the power switch is turned
to ACC or OFF and the driver’s
door is opened.
To turn the lights on again, turn the
power switch to ON, or turn the light
switch to the or position
once and then back to or
position.
■Light reminder buzzer
A buzzer sounds when the power
switch is turned to ACC or OFF and
the driver’s door is opened while the
lights are turned on.
■Automatic headlight leveling
system
The level of the headlights is auto-
matically adjusted according to the
number of passengers and the load-
ing condition of the vehicle to
ensure that the headlights do not
interfere with other road users.
■Windshield wiper linked head-
light illumination
When driving during daytime with
the headlight switch turned to , if the windshield wipers are used, the
headlights will turn o
n automatically
after several seconds to help
enhance the visibility of your vehi-
cle.
■12-volt battery-saving function
In order to prevent the 12-volt bat-
tery of the vehicle from discharging,
if the headlights and/or tail lights are
on when the power switch is turned
to OFF, the battery saving function
will operate and au tomatically turn
off all the lights af ter approximately
20 minutes.
When any of the following are per-
formed, the 12-volt battery-saving
function is canceled once and then
reactivated. All the lights will turn off
automatically 20 minutes after the
12-volt battery-saving function has
been reactivated:
●When the headlight switch is oper-
ated
●When a door is opened or closed
■If “Headlight System Malfunc-
tion Visit Your Dealer” is dis-
played on the multi-information
display
The system may be malfunctioning.
Have the vehicle inspected by your
Toyota dealer.
■Customization
Settings (e.g. light sensor sensitiv-
ity) can be changed.
(Customizable features:  P.572)
NOTICE
■To prevent 12-volt battery dis-
charge
Do not leave the lights on longer
than necessary when the EV sys-
tem is not operating.

3505-4. Using the driving support systems
Owners Manual_USA_M42C01_en
WARNING
●Only use Remote control func-
tion on level road surfaces
which are not slick. Do not use
Remote control function for
parking spaces on a downward
or upward incline.
●While Remote control function
is operating, if a malfunction or
system limitation is detected,
the following will occur automat-
ically:
• Remote control function will be canceled
• The vehicle will stop
• The shift position will change to P and the parking brake will be
engaged
• The power switch will turn off
(for some malfunctions, the
power switch will not turn off or
cannot be turned off. Enter the
vehicle and take corrective
action accordin g to the mes-
sage displayed on the smart-
phone.)
• The doors will remain locked
●When starting Remote control
function, unlock the doors with
wireless remote control by elec-
tronic key.
●When Remote control function
is operating, the driver should
remain within approximately 9.8
ft. (3 m) of the vehicle. If the
driver becomes more than
approximately 9.8 ft. (3 m)
away, Remote control function
will be suspend ed and a mes-
sage will be displayed on the
smartphone. Re mote control
function operation can be
resumed by approaching the
vehicle.
●The headlights will be turned on
if the surrounding area is dark.
●If system operation is canceled
due to a malfunction, the emer-
gency flashers will flash.
The emergency flashers will
turn off if any of the following
conditions are met:
• A door is opened
• 3 minutes have elapsed since the emergency flashers began
flashing
●Remote control function can
only be started when the follow-
ing conditions are met:
• When the EV system is starting, after assist mode is selected
• When the power switch is off
• When the remote air condition- ing is operating
●After unlocking the doors using
the wireless remote control, if
the doors are lo cked using the
smart entry function, the lock
operation may be delayed.
NOTICE
■Precautions for use
Advanced Park
If the 12-volt battery was dis-
charged or has been removed
and installed, fold and extend the
outside rear view mirrors.
■When using Remote control
function

4116-1. Using the air conditioning system and defogger
Owners Manual_USA_M42C01_en
6
Interior features
■Electronic key battery depletion
 P. 1 6 2
■When the electronic key bat-
tery is fully depleted
 P. 4 9 7
■Customization
Setting (e.g. Operation using “A/C”
on the wireless remote control) can
be changed. (Customizable fea-
tures: P.575)*: If equipped
WARNING
■Precautions for the Remote
Air Conditioning System
●Do not use the system if people
are in the vehicle.
Even when the system is in use,
the internal temperature may
still reach a high or low level
due to features such as the
automatic shut-off. Children and
pets left inside the vehicle may
suffer heatstroke dehydration or
hypothermia, or could result in
death or serious injury.
●Depending on the surrounding
environment, signals from the
wireless switch may transmit
further than expected. Pay
appropriate attention to the
vehicle’s surroundings and use
the switch only when necessary.
●Do not operate “A/C” if the hood
is open. The air conditioning
may operate unintentionally and
objects may be drawn into the
electrical cooling fan.
NOTICE
■To prevent the traction bat-
tery from being discharged
through incorrect operation
Use “A/C” only when necessary.
Heated steering
wheel*/seat heat-
ers*/seat ventila-
tors*/radiant heater*
 Heated steering wheel
Warms up the grip of the
steering wheel
 Seat heaters
Warm up the seat upholstery
 Seat ventilators
Maintain good airflow on the
seat upholstery by sucking air
into the seats
 Radiant heaters
Warm up the feet of the front
seats
WARNING
■To prevent minor burn inju-
ries
Care should be taken if anyone in
the following categories comes in
contact with the steering wheel or
seats when the heater is on:
●Babies, small children, the
elderly, the sick and the physi-
cally challenged
●Persons with sensitive skin
●Persons who are fatigued
●Persons who have taken alco-
hol or drugs that induce sleep
(sleeping drugs, cold remedies,
etc.)

4376-4. Using the other interior features
Owners Manual_USA_M42C01_en
6
Interior features
Fold down the armrest for use.
The coat hooks are provided
with the rear assist grips.
NOTICE
• A heating pad
• CDs, DVDs or other media
• A metal accessory
• A case or cover made of metal
●Electric wave type wireless
remote controls are being used
nearby
●The electronic key is not inside
the vehicle
●2 or more portable devices are
placed on the charging tray at
the same time
If charging is abnormal or the
operation indicator light contin-
ues to flash for any other reason,
the wireless charger may be mal-
functioning. Contact your Toyota
dealer.
■To prevent malfunctions and
data corruptions
●When charging, bringing a
credit, or other magnetic card,
or magnetic storage media
close to the charge area may
clear any stored data due to
magnetic influence. Also, do not
bring a wristwatch or other pre-
cision instrument close to the
charge area since doing so may
cause it to malfunction.
●Do not charge with a non-con-
tact IC card such as a transpor-
tation system IC card inserted
between the charging side of a
portable device and the charge
area. The IC chip may become
extremely hot and damage the
portable device or IC card. Be
especially careful not to charge
a portable device inside a case
or cover with a non-contact IC
card attached.
●Do not leave portable devices
inside the vehicle. The inside of
the vehicle can become hot in
extreme heat, which could
cause a malfunction.
■If the smartphone OS has
been updated
If the smartphone OS has been
updated to a newer version, its
charging specifications may have
changed significantly.
For details, check the information
on the manufacturer’s website.
■To prevent 12-volt battery dis-
charge
Do not use the wireless charger
for a long period of time when the
EV system is stopped.
Armrest
NOTICE
■To prevent damage to the
armrest
Do not apply too much load on the
armrest.
Coat hooks