Get Before driving -> Smart key system Guide for Toyota bZ4X SUV Second Generation (2025-2026)

187

4-2. Opening, closing and locking the doors

partment

Smart key system

Antenna outside the luggage

compartment

The following operations

can be performed simply by

carrying the electronic key

on your person, for example

in your pocket. The driver

should always carry the

electronic key.

■Effective range (areas within

which the electronic key is

detected)

 Locks and unlocks the

doors^*(P.167)

 Locks and unlocks the back

door^*(P.173)

When locking or unlocking the

doors

 Starts the EV system

(P.231)

The system can be operated when

the electronic key is within about 2.3

ft. (0.7 m) of the driver’s door han-

dle, front passenger’s door handle

(if equipped), rear door handles (if

equipped) and back door opener

switch (if equipped). (Only the doors

detecting the key can be operated.)

■Antenna location

When starting the EV system or

changing power switch modes

The system can be operated when

the electronic key is inside the vehi-

cle.

■If an alarm sounds or a warning

message is displayed

An alarm sounds and warning mes-

sage displays shown on the multi-

information display are used to pro-

tect against unexpected accidents

or theft of the vehicle resulting from

erroneous operation. When a warn-

ing message is displayed, take

appropriate measures based on the

displayed message.

Antennas outside the cabin

(driver’s side/front passenger’s

side [if equipped])

Antennas outside the cabin

(rear) (if equipped)

When only an alarm sounds, cir-

cumstances and correction proce-

dures are as follows.

Antennas inside the cabin

Antenna inside the luggage com-

Owners Manual_USA_M42C01_en

188

4-2. Opening, closing and locking the doors

●When an exterior alarm sounds

once for 5 seconds

mechanical key, to unlock the

doors.

■Turning an electronic key to

battery-saving mode

Correction pro-

Situation

cedure

●When battery-saving mode is set,

battery depletion is minimized by

stopping the electronic key from

receiving radio waves.

An attempt was

Close all of the

made to lock the

doors and lock

vehicle while a

the doors again.

door was open.

Press

twice while pressing

●When an interior alarm pings con-

tinuously

and holding

Confirm that the electronic key indi-

cator flashes 4 times.

While the battery-saving mode is

set, the smart key system cannot be

used. To cancel the function, press

any of the electronic key buttons.

Correction pro-

Situation

cedure

The power

switch was

turned to ACC

while the driver’s Turn the power

door was open

(or the driver’s

switch to OFF

and close the

door was opened driver’s door.

while the power

switch was in

ACC).

■Battery-saving function

●Electronic keys that will not be

used for long periods of time can

be set to the battery-saving mode

in advance.

The battery-saving function will be

activated in order to prevent the

electronic key battery and the 12-

volt battery from being discharged

while the vehicle is not in operation

for a long time.

■Conditions affecting operation

The smart key system uses weak

radio waves. In the following situa-

tions, the communication between

the electronic key and the vehicle

may be affected, preventing the

smart key system, wireless remote

control and immobilizer system from

operating properly.

●In the following situations, the

smart key system may take some

time to unlock the doors.

• The electronic key has been left in

an area of approximately 11.5 ft.

(3.5 m) of the outside of the vehi-

cle for 2 minutes or longer.

• The smart key system has not

been used for 5 days or longer.

●When the electronic key battery is

depleted

●If the smart key system has not

been used for 14 days or longer,

the doors cannot be unlocked at

any doors except the driver’s door.

In this case, take hold of the

driver’s door handle, or use the

wireless remote control or the

●Near a TV tower, electric power

plant, gas station, radio station,

large display, airport or other facil-

ity that generates strong radio

waves or electrical noise

●When the electronic key is in con-

Owners Manual_USA_M42C01_en

189

4-2. Opening, closing and locking the doors

tact with, or is covered by the fol-

lowing metallic objects

• Cards to which aluminum foil is

attached

●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.

• 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

●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 lock or unlock the

vehicle.

●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

●Even if the electronic 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 automatically be

locked after approximately 60 sec-

onds if the doors are not opened

and closed.)

●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

●If the wireless remote control is

used to lock the doors when the

electronic key is near the vehicle,

there is a possibility that the door

may not be unlocked by the entry

function. (Use the wireless remote

control to unlock the doors.)

●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.

●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

Owners Manual_USA_M42C01_en

190

4-2. Opening, closing and locking the doors

lock and unlock repeatedly. In that

case, follow the following 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.)

to the vehicle when operating the

system from the outside 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.)

• Set the electronic key to battery-

saving mode to disable the smart

key system. (P.188)

■If the smart key system does

not operate properly

●If the electronic key is inside the

vehicle and a door handle

●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.

becomes wet during a car wash, a

message may be shown on the

multi-information display and a

buzzer will sound outside the vehi-

cle. To turn off the alarm, lock all

the doors.

• Use the wireless remote control.

If the doors cannot be locked or

unlocked by perform the above, use

the mechanical key. (P.539)

●The lock sensor may not work

properly if it comes into contact

with ice, snow, mud, etc. Clean

the lock sensor and attempt to

operate it again.

However, if the mechanical key is

used while the alarm system is set,

the warning will sound. (P.69)

●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 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 there is another electronic key in

the detection area, it may take

slightly longer to unlock the doors

after the door handle is gripped.

If the smart key system has been

deactivated in a customized setting,

refer to the explanations for the fol-

lowing operations.

■When the vehicle is not driven

for extended periods

●Locking and unlocking the doors:

Use the wireless remote control or

mechanical key. (P.167, 539)

●To prevent theft of the vehicle, do

not leave the electronic key within

6 ft. (2 m) of the vehicle.

●Starting the EV system and

changing power switch modes:

P.540

●The smart key system can be

deactivated in advance. (P.569)

●Stopping the EV system: P.233

●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

Owners Manual_USA_M42C01_en

191

4-2. Opening, closing and locking the doors

WARNING

■Caution regarding interfer-

ence with electronic devices

●People with implantable car-

diac pacemakers, cardiac

resynchronization therapy-

pacemakers or implantable car-

dioverter defibrillators should

keep away from the smart key

system antennas. (P.187)

The radio waves may affect the

operation of such devices. If

necessary, the entry function

can be disabled. Ask your Toy-

ota dealer for details, such as

the frequency of radio waves

and timing of the emitted radio

waves. Then, consult your doc-

tor to see if you should disable

the entry function.

●User of any electrical medical

device other than implantable

cardiac pacemakers, cardiac

resynchronization therapy-

pacemakers or implantable car-

dioverter defibrillators should

consult the manufacturer of the

device for information about its

operation under the influence of

radio waves.

Radio waves could have unex-

pected effects on the operation

of such medical devices.

Ask your Toyota dealer for details

for disabling the entry function.

Owners Manual_USA_M42C01_en

Before driving -> Smart key system for Your Toyota bZ4X SUV Second Generation (2025-2026)

Related Topics

Popular Owner Manuals

Latest Owner Manuals