Get Driving -> Emergency Driving Stop System Guide for Toyota bZ4X SUV Second Generation (2025-2026)

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5-4. Using the driving support systems

Emergency Driving

Stop System

WARNING

■For safe use

●Driving safely is solely the

responsibility of the driver. Pay

careful attention to the sur-

The emergency driving stop

system is a system which

automatically decelerates

and stops the vehicle within

its lane if the driver

becomes unable to con-

tinue driving the vehicle,

such as if they have suf-

fered a medical emergency,

etc.

rounding conditions in order to

ensure safe driving. The emer-

gency driving stop system is

designed to provide support in

an emergency where it is diffi-

cult for the driver to continue

driving, such as if they have had

a medical emergency. It is not

designed to support driving

while drowsy or in poor physical

health, or inattentive driving.

●Although the emergency driv-

ing stop system is designed to

decelerate the vehicle within its

lane to help avoid or help

reduce the impact of a collision

if the system determines that it

is difficult for the driver to con-

tinue driving, its effectiveness

may change according to vari-

ous conditions. Therefore, it

may not always be able to

During LTA (Lane Tracing

Assist) control, if the sys-

tem does not detect driving

operations, such as if the

driver is not holding the

steering wheel, and deter-

mines the driver is not

responsive, the vehicle will

be decelerated and stopped

within its current lane to

help avoid a collision or

reduce the impact of a colli-

sion.

achieve the same level of per-

formance. Also, if the operating

conditions are not met, this

function will not operate.

●After the emergency driving

stop system operates, if driving

becomes possible again, imme-

diately begin driving again or, if

necessary, park the vehicle on

the shoulder of the road and set

a warning reflector and flare to

warn other drivers of your

stopped vehicle.

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300

5-4. Using the driving support systems

●When the LTA is on

WARNING

●When the vehicle speed is

approximately 30 mph (50 km/h)

or more

●After this system operates, pas-

sengers should attend to the

driver as necessary and take

appropriate hazard prevention

measures, such as moving to a

place where safety can be

ensured, such as the shoulder

of the road or behind a guard-

rail.

■Operation cancelation condi-

tions

In the following situations, system

operation will be canceled:

●When LTA control has been can-

celed (the LTA switch has been

pressed, etc.)

●This system detects the condi-

tion of the driver through the

operation of the steering wheel.

This system may operate if the

driver is aware but intentionally

and continuously does not oper-

ate the vehicle. Also, the system

may not operate if it cannot

●When the dynamic radar cruise

control has been canceled

●When driver operations are

detected (the steering wheel is

held, the brake pedal, accelerator

pedal, parking brake, hazard light

switch, or turn signal lever is oper-

ated)

determine that the driver is not

responsive, such as if they are

leaning on the steering wheel.

●When the driving assist switch is

pressed while in the stop and hold

phase

Summary of the system

●When the power switch has been

turned from ON to OFF

Operation of this system is sep-

arated into 4 control states.

Through control state “warning

phase 1” and “warning phase 2”,

the system determines if the

driver is aware and responsive

while outputting a warning and

controlling the vehicle speed. If

the system determines the

driver is not responsive, it will

operate in control state “deceler-

ation stop phase” and “stop hold

phase” and decelerate and stop

the vehicle. It will then operate

continuously in “stop hold

●Situations in which some or all of

the functions of the system cannot

operate: P.264

■LTA control when operation is

canceled

When emergency driving stop sys-

tem operation is canceled, LTA con-

trol may also be canceled.

Warning phase 1

If driving operations are not

detected after the hands off

steering wheel warning oper-

ates, a buzzer will sound inter-

mittently and a message will be

displayed to warn the driver, and

the system will judge if the driver

is responsive or not. If driving

operations, such as holding the

steering wheel, are not per-

phase”.

■Operating conditions

This system operates when all of

the following conditions are met:

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301

5-4. Using the driving support systems

formed within a certain amount

of time, the system will enter

warning phase 2.

automatically. After entering the

stop and hold phase, the buzzer

will continue sounding continu-

ously and the emergency flash-

ers (hazard lights) will flash to

warn other drivers of the emer-

gency.

Warning phase 2

After entering warning phase 2,

a buzzer will sound in short

intervals and a message will be

displayed to warn the driver, and

the vehicle will slowly deceler-

ate. If driving operations, such

as holding the steering wheel,

are not performed within a cer-

tain amount of time, the system

will determine that the driver is

not responsive and enter the

deceleration stop phase.

The audio system will be muted

until the driver becomes respon-

sive.

When the vehicle is decelerating,

the brake lights may illuminate,

depending on the road conditions,

etc.

Deceleration stop phase

After entering the deceleration

stop phase, a buzzer will sound

continuously and a message will

be displayed to warn the driver,

and the vehicle will slowly decel-

erate and stop. After the vehicle

stops, the system will enter the

stop and hold phase.

Stop hold phase

After the vehicle is stopped, the

parking brake will be applied

Owners Manual_USA_M42C01_en

Driving -> Emergency Driving Stop System for Your Toyota bZ4X SUV Second Generation (2025-2026)

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