Get Driving -> Dynamic radar cruise control Guide for Toyota bZ4X SUV Second Generation (2025-2026)

288

5-4. Using the driving support systems

Dynamic radar cruise

control

Stop

This dynamic radar cruise

control detects the pres-

ence of vehicles ahead,

determines the current vehi-

cle-to-vehicle distance, and

operates to maintain a suit-

able distance from the vehi-

cle ahead. The desired

vehicle-to-vehicle distance

can be set by operating the

vehicle-to-vehicle distance

switch.

Yield

Warning

 Depending on the specifica-

tions of the vehicle, signs may

be displayed overlapping.

Duplicate display exam-

ple

Use the dynamic radar

cruise control only on high-

ways and expressways.

WARNING

■For safe use

Changing RSA settings

●Driving safely is solely the

responsibility of the driver. Do

not overly rely on this system,

and pay careful attention to the

surrounding conditions in order

to ensure safe driving.

The following settings of the

RSA can be changed through

customize settings. (P.573)

●The dynamic radar cruise con-

trol provides driving assistance

to reduce the driver’s burden.

However, there are limitations to

the assistance provided. Read

the following items carefully. Do

not overly rely on this system

and always drive carefully.

Conditions under which the sys-

tem may not operate correctly:

P.294

Owners Manual_USA_M42C01_en

289

5-4. Using the driving support systems

●Details of support provided for

the driver’s judgement The

dynamic radar cruise control

determines whether the dis-

tance between the driver’s own

vehicle and a designated pre-

ceding vehicle is within a set

range. It is not capable of mak-

ing any other type of judgement.

Therefore, it is absolutely nec-

essary for the driver to remain

vigilant and to determine

WARNING

●Set the speed appropriately

according to the speed limit,

traffic flow, road conditions,

weather conditions, etc. The

driver is responsible for confirm-

ing the set speed.

●Even if the system is operating

correctly, the condition of a pre-

ceding vehicle as recognized by

the driver and detected by the

system may differ. Therefore, it

is necessary for the driver to

pay attention, assess risks, and

ensure safety. Over-reliance on

this system to drive the vehicle

safely may lead to an accident

resulting in death or serious

injury.

whether or not there is a possi-

bility of danger.

●Details of support provided for

the driver’s operation The

dynamic radar cruise control

does not include functions

which will prevent or avoid colli-

sions with vehicles ahead of

your vehicle. Therefore, if there

is ever any possibility of danger,

the driver must take immediate

and direct control of the vehicle

and act appropriately in order to

ensure safety.

■Precautions for the driving

assist systems

Observe the following precau-

tions, as there are limitations to

the assistance provided by the

system. Over-reliance on this sys-

tem may lead to an accident

5

■Situations in which the

dynamic radar cruise control

should not be used

resulting in death or serious injury.

●Details of support provided for

the driver’s vision The dynamic

radar cruise control is only

Do not use the dynamic radar

cruise control in the following situ-

ations. As the system will not be

able to provide appropriate con-

trol, using it may lead to an acci-

dent resulting in death or serious

injury.

intended to help the driver in

determining the distance

between the driver’s own vehi-

cle and a designated preceding

vehicle. It is not a system which

allows for careless or inattentive

driving, and is not a system

which assists in poor visibility

conditions. The driver must pay

attention to their surroundings,

even when the vehicle stops.

●Roads where there are pedes-

trians, cyclists, etc.

●When driving on a highway or

expressway entrance or exit

●When the approach warning

sounds frequently

●Situations in which the sensors

may not operate properly:

P.263

●Situations in which the lane may

not be detected: P.264

Owners Manual_USA_M42C01_en

290

Basic functions

5-4. Using the driving support systems

Constant speed cruising:

When there are no vehicles ahead

The vehicle drives at the speed set by the driver.

If the set vehicle speed is exceeded while driving down a hill, the set vehicle

speed display will blink and a buzzer will sound.

Deceleration and follow-up cruising

When a preceding vehicle driving slower than the set vehicle

speed is detected

When a vehicle is detected driving ahead of your vehicle, the vehicle auto-

matically decelerates and if a greater reduction in vehicle speed is neces-

sary, the brakes are applied (the stop lights will come on at this time). The

vehicle is controlled to maintain the vehicle-to-vehicle distance set by the

driver, in accordance with changes in the speed of the preceding vehicle. If

vehicle deceleration is not sufficient and the vehicle approaches the vehicle

ahead, the approach warning will sound.

Acceleration

When there are no longer any preceding vehicles driving slower

than the set vehicle speed

The vehicle accelerates until the set vehicle speed is reached and then

resumes constant speed cruising.

Starting off: If a preceding vehicle stops, the vehicle will also stop

(controlled stop). After the preceding vehicle starts off, pressing

the “RES” switch or depressing the accelerator pedal will resume

follow-up cruising (start off operation). If a start off operation is not

performed, the controlled stop will continue.

Owners Manual_USA_M42C01_en

291

5-4. Using the driving support systems

System components

Setting the vehicle speed

■ Meter display

1 Press the driving assist mode

select switch to select

dynamic radar cruise control.

The dynamic radar cruise control

indicator will illuminate.

Multi-information display

Set vehicle speed

Indicators

2 Using the accelerator pedal,

accelerate or decelerate to

the desired vehicle speed

(approximately 20 mph [30

km/h] or more), and press the

driving assist switch to set

the set vehicle speed.

■ Switches

5

The set vehicle speed will be dis-

played on the multi-information dis-

play.

The vehicle speed at the moment

the switch is released will be the set

vehicle speed.

Driving assist switch

Driving assist mode select

switch

Cancel switch

Vehicle-to-vehicle distance

switch

“-” switch

“+” switch/“RES” switch

Owners Manual_USA_M42C01_en

292

5-4. Using the driving support systems

Long press adjustment: Increases

Adjusting the set vehicle

speed

or decreases in 5 km/h (3.1 mph) or

5 mph (8 km/h) increments continu-

ously while the switch is pressed

and held

■ Adjusting the set vehicle

speed using the switches

The set vehicle speed adjustment

increment can be changed through

a customize setting.

To change the set vehicle

speed, press the “+” or “-” switch

until the desired speed is dis-

played.

■ Increasing the set vehicle

speed using the accelerator

pedal

1 Depress the accelerator

pedal to accelerate the vehi-

cle to the desired vehicle

speed.

2 Press the “+” switch.

Canceling/resuming con-

trol

1 Increase set vehicle speed

2 Decrease set vehicle speed

Short press adjustment: Press the

switch

Long press adjustment: Press and

hold the switch until the desired set

vehicle speed is reached.

The set vehicle speed will

increase or decrease as follows:

 For U.S.A.

1 Press the cancel switch or

driving assist switch to cancel

control.

Short press adjustment: Increases

or decreases by 1 mph (1.6 km/h)

each time the switch is pressed

Control will also be canceled if the

brake pedal is depressed. (If the

vehicle has been stopped by sys-

tem control, depressing the brake

pedal will not cancel control.)

Long press adjustment: Increases

or decreases in 1 mph (1.6 km/h)

increments continuously while the

switch is pressed and held

2 Press the “RES” switch to

 Except for U.S.A.

resume control.

Short press adjustment: By 1 km/h

(0.6 mph) or 1 mph (1.6 km/h) each

time the switch is pressed

Owners Manual_USA_M42C01_en

293

5-4. Using the driving support systems

Changing the vehicle-to-

■Operating conditions

vehicle distance

●D shift position is selected.

●The desired set speed can be set

when the vehicle speed is approx-

imately 20 mph (30 km/h) or more.

(If the vehicle speed is set while

driving at below approximately 20

mph [30 km/h], the set speed will

be set to approximately 20 mph

[30 km/h].)

Each time the switch is pressed,

the vehicle-to-vehicle distance

setting will change as follows:

If a preceding vehicle is detected,

the preceding vehicle mark

be displayed.

will

■Accelerating after setting the

vehicle speed

As with normal driving, acceleration

can be performed by depressing the

accelerator pedal. After accelerat-

ing, the vehicle will return to the set

vehicle speed. However, while in

vehicle-to-vehicle distance control

mode, the vehicle speed may

decrease to below the set vehicle

speed in order to maintain the dis-

tance from the preceding vehicle.

5

■When the vehicle is stopped by

system control during follow-up

cruising

Vehicle- Approximate

to-vehi- Distance (Vehi-

cle dis- cle Speed: 60

tance mph [100 km/h])

Illustra-

tion

Number

●When the “RES” switch is pressed

while the vehicle is stopped by

system control, if the preceding

vehicle starts off within approxi-

mately 3 seconds, follow-up cruis-

ing will resume.

Extra

long

Approximately

200 ft. (60 m)

1

2

3

4

Approximately

145 ft. (45 m)

Long

Medium

Short

●If the preceding vehicle starts off

within approximately 3 seconds of

the vehicle being stopped by sys-

tem control, follow-up cruising will

resume.

Approximately

100 ft. (30 m)

Approximately

85 ft. (25 m)

■Automatic cancelation of vehi-

cle-to-vehicle distance control

mode

The actual vehicle-to-vehicle dis-

tance varies in accordance with the

vehicle speed. Also, when the vehi-

cle is stopped by system control, it

will be stopped at a certain distance

from the preceding vehicle,

In the following situations, vehicle-

to-vehicle distance control mode will

be canceled automatically:

●When the brake control or output

restriction control of a driving sup-

port system operates (For exam-

ple: Pre-Collision System, drive-

start control)

depending on the situation, regard-

less of the setting.

●When the parking brake has been

Owners Manual_USA_M42C01_en

294

5-4. Using the driving support systems

operated

■Conditions under which the

system may not operate cor-

rectly

●When the vehicle is stopped by

system control on a steep incline

In the following situations, operate

the brake pedal (or accelerator

pedal, depending on the situation)

as necessary.

●When any of the following are

detected while the vehicle is

stopped by system control:

• The driver’s seat belt is unfas-

tened

• The driver’s door is opened

• Approximately 3 minutes have

elapsed since the vehicle was

stopped

As the sensor may not be able to

correctly detect a vehicle, the sys-

tem may not operate properly.

●When a preceding vehicle brakes

suddenly

The parking brake may be actived

automatically.

●When changing lanes at low

speeds, such as in a traffic jam

The shift position may automatically

change to P. (P.238)

Approach warning

●Situations in which some or all of

the functions of the system cannot

operate: P.264

In situations where the vehicle

approaches a preceding vehicle

and the system cannot provide

sufficient deceleration, such as

if a vehicle cuts in front of the

vehicle, a warning display will

flash and a buzzer will sound to

alert the driver. Depress the

brake pedal to ensure appropri-

ate vehicle-to-vehicle distance.

■Dynamic radar cruise control

system warning messages and

buzzers

For safe use: P.259

■Preceding vehicles that the sen-

sor may not detect correctly

In the following situations, depend-

ing on the conditions, if the system

cannot provide sufficient decelera-

tion or acceleration is necessary,

operate the brake pedal or accelera-

tor pedal.

■ Warnings may not occur

when

As the sensor may not be able to

correctly detect these types of vehi-

cles, the approach warning

In the following situations, the

warning may not operate even

though the vehicle-to-vehicle

distance is short.

(P.294) may not operate.

●When a vehicle cuts in front of

your vehicle or changes lanes

away from your vehicle extremely

slowly or quickly

 When the preceding vehicle is

traveling at the same speed

or faster than your vehicle

●When changing lanes

●When a preceding vehicle is driv-

ing at a low speed

 When the preceding vehicle is

traveling at an extremely low

speed

●When a vehicle is stopped in the

same lane as the vehicle

●When a motorcycle is traveling in

the same lane as the vehicle

 Immediately after the vehicle

speed has been set

Owners Manual_USA_M42C01_en

295

5-4. Using the driving support systems

 When the accelerator pedal is

Support for lane change

depressed

If your vehicle is being driven at

approximately 50 mph (80 km/h)

or more and a lane change to

the passing lane is performed,

when the turn signal lever is

operated and the lane is

changed, the vehicle will accel-

erate up to the set speed to

assist in overtaking.

Curve speed reduction

function

When a curve is detected, the

vehicle speed will begin being

reduced. When the curve ends,

the vehicle speed reduction will

end.

Depending on the situation, the

vehicle speed will then return to the

set vehicle speed.

The system’s recognition of which

lane is the passing lane may be

based solely on the location of the

steering wheel in the vehicle (left-

hand drive/right-hand drive). If the

vehicle is driven in a location where

the passing lane is on the opposite

side of that where the vehicle was

originally sold, the vehicle may

accelerate when the turn signal

lever is operated away from the

passing lane. (e.g. The vehicle was

manufactured for a right-hand traf-

fic location, but is being driven in a

left-hand traffic location. The vehi-

cle may accelerate when the turn

signal lever is operated to the right.)

In situations where vehicle-to-vehi-

cle distance control needs to oper-

ate, such as when a preceding

vehicle cuts in front of your vehicle,

the curve speed reduction function

will be canceled.

5

If your vehicle is being driven at

approximately 50 mph (80 km/h) or

more and the lane is changed to

that with a vehicle traveling slower

than your vehicle, when the turn

signal lever is operated the vehicle

will gradually decelerate to assist in

changing lanes.

■Situations in which the curve

speed reduction function may

not operate

In situations such as the following,

the curve speed reduction function

may not operate:

●When the vehicle is being driven

around a gentle curve

Changing Dynamic radar

cruise control settings

●When the accelerator pedal is

being depressed

●When the vehicle is being driven

around an extremely short curve

The settings of Dynamic radar

cruise control can be changed

Owners Manual_USA_M42C01_en

Driving -> Dynamic radar cruise control for Your Toyota bZ4X SUV Second Generation (2025-2026)

Related Topics

Popular Owner Manuals

Latest Owner Manuals