Get Driving -> RCTA (Rear Cross Traffic Alert) Guide for Toyota bZ4X SUV Second Generation (2025-2026)

322

5-4. Using the driving support systems

RCTA (Rear Cross Traf-

WARNING

*

fic Alert)

●When the outside rear view mir-

ror is closed, the side sensors

or side cameras cannot detect

objects.

*

: If equipped

The RCTA function uses the

BSM rear side radar sen-

sors installed behind the

rear bumper. This function

is intended to assist the

driver in checking areas

that are not easily visible

when backing up.

●If the 12-volt battery was dis-

charged or has been removed

and installed, fold and extend

the outside rear view mirrors.

WARNING

■Cautions regarding the use of

the system

The driver is solely responsible for

safe driving. Always drive safely,

taking care to observe your sur-

roundings.

The RCTA function is only a sup-

plementary function which alerts

the driver that a vehicle is

approaching from the right or left

at the rear of the vehicle.

As the RCTA function may not

function correctly under certain

conditions, the driver’s own visual

confirmation of safety is neces-

sary.

Over reliance on this function may

lead to an accident resulting

death or serious injury.

■To ensure the system can

operate properly

P.303

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323

5-4. Using the driving support systems

System components

Turning the RCTA func-

tion on/off

The RCTA can be enabled/dis-

abled on of the multi-infor-

mation display. (P.156)

When the RCTA function is off, the

driving assist information indicator

(P.149) will illuminate. At this

time, “Rear Cross Traffic Alert OFF”

will be displayed on the multi-infor-

mation display. Each time the

power switch is turned to ON, the

RCTA function is enabled.

Meter control switches

■Outside rear view mirror indica-

tor visibility

Turning the RCTA function on/off.

In strong sunlight, the outside rear

view mirror indicator may be difficult

to see.

Outside rear view mirror indi-

cators

5

When a vehicle approaching from

the right or left at the rear of the

vehicle is detected, both outside

rear view mirror indicators will flash.

■Hearing the RCTA buzzer

The RCTA buzzer may be difficult to

hear over loud noises, such as high

audio volume.

■Radar sensors

P.303

Multimedia display

If a vehicle approaching from the

right or left at the rear of the vehicle

is detected, the RCTA icon

RCTA function

(P.324) for the detected side will

be displayed on the multimedia dis-

play. This illustration shows an

example of a vehicle approaching

from both sides of the vehicle.

■ Operation of the RCTA

function

The RCTA function uses radar

sensors to detect vehicles

Driving assist information

indicator

approaching from the right or left

at the rear of the vehicle and

alerts the driver of the presence

of such vehicles by flashing the

outside rear view mirror indica-

tors and sounding a buzzer.

When the RCTA is off, “Rear Cross

Traffic Alert OFF” will be displayed

on the multi-information display.

Owners Manual_USA_M42C01_en

324

5-4. Using the driving support systems

The buzzer can alert for faster

vehicles approaching from far-

ther away.

Approaching vehicles

Detection areas of approach-

ing vehicles

Example:

■ RCTA icon display

When a vehicle approaching

from the right or left at the rear

of the vehicle is detected, the

following will be displayed on

the multimedia display.

Approach-

Approxi-

Speed

ing vehicle

mate alert

distance

34 mph 131 ft. (40

Fast

(56 km/h)

m)

This illustration shows an exam-

ple of a vehicle approaching

from both sides of the vehicle.

5 mph (8 18 ft. (5.5

km/h) m)

Slow

■The RCTA function is opera-

tional when

The RCTA function operates when

all of the following conditions are

met:

●The power switch is in ON.

●The RCTA function is on.

●The shift position is in R.

●The vehicle speed is less than

■ RCTA function detection

approximately 9 mph (15 km/h).

areas

●The approaching vehicle speed is

between approximately 5 mph (8

km/h) and 34 mph (56 km/h).

The areas that vehicles can be

detected in are outlined below.

■Adjusting the buzzer volume

The buzzer volume can be adjusted

on the multi-information display.

The volume of the RCTA buzzer can

be adjust on

of the multi-infor-

Owners Manual_USA_M42C01_en

325

5-4. Using the driving support systems

*

pedestrians, etc.

mation display. (P.319)

●Vehicles moving away from your

■Muting a buzzer temporarily

vehicle

When an object is detected, the

temporary mute switch is displayed

on the multimedia display system.

●Vehicles approaching from the

parking spaces next to your vehi-

*

cle

Select

to mute a buzzer of the

●The distance between the sensor

and approaching vehicle gets too

close

intuitive parking assist-sensor,

RCTA and RCD all together.

Mute will be canceled automatically

in the following situations:

*

: Depending on the conditions,

detection of a vehicle and/or

object may occur.

●When the shift position is

changed.

■Situations in which the system

may not operate properly

●When the vehicle speed exceeds

a certain speed.

The RCTA function may not detect

vehicles correctly in the following

situations:

●When there is a malfunction in a

sensor or the system is temporar-

ily unavailable.

●When the sensor is misaligned

due to a strong impact to the sen-

sor or its surrounding area

●When the operating function is

disabled manually.

●When the power switch is turned

off.

5

●When mud, snow, ice, a sticker,

etc.,is covering the sensor or sur-

rounding area on the position

above the rear bumper

■Conditions under which the

system will not detect a vehicle

The RCTA function is not designed

to detect the following types of vehi-

cles and/or objects:

●When driving on a road surface

that is wet with standing water

during bad weather, such as

heavy rain, snow, or fog

●Vehicles approaching from directly

behind

●When multiple vehicles are

approaching with only a small gap

between each vehicle

●Vehicles backing up in a parking

space next to your vehicle

●When a vehicle is approaching at

high speed

●Vehicles that the sensors cannot

detect due to obstructions

●When equipment that may

obstruct a sensor is installed, such

as a towing eyelet, bumper pro-

tector (an additional trim strip,

etc.), bicycle carrier, or snow plow

●When backing up on a slope with

a sharp change in grade

●Guardrails, walls, signs, parked

vehicles and similar stationary

*

objects

●Small motorcycles, bicycles,

Owners Manual_USA_M42C01_en

326

5-4. Using the driving support systems

●When a vehicle turns into the

detection area

●When backing out of a sharp

angle parking spot

■Situations in which the system

may operate even if there is no

possibility of a collision

Instances of the RCTA function

unnecessary detecting a vehicle

and/or object may increase in the

following situations:

●Immediately after the RCTA func-

●When the parking space faces a

street and vehicles are being

driven on the street

tion is turned on

●Immediately after the EV system

is started with the RCTA function

on

●When the sensors cannot detect a

vehicle due to obstructions

●When towing a trailer

●When there is a significant differ-

ence in height between your vehi-

cle and the vehicle that enters the

detection area

●When the distance between your

vehicle and metal objects, such as

a guardrail, wall, sign, or parked

vehicle, which may reflect electri-

cal waves toward the rear of the

vehicle, is short

●When a sensor or the area around

a sensor is extremely hot or cold

●If the suspension has been modi-

fied or tires of a size other than

specified are installed

●If the front of the vehicle is raised

or lowered due to the carried load

●When turning while backing up

Owners Manual_USA_M42C01_en

327

5-4. Using the driving support systems

●When a sensor or the area around

a sensor is extremely hot or cold

●If the suspension has been modi-

fied or tires of a size other than

specified are installed

●If the front of the vehicle is raised

or lowered due to the carried load

●When equipment that may

obstruct a sensor is installed, such

as a towing eyelet, bumper pro-

tector (an additional trim strip,

etc.), bicycle carrier, or snow plow

●When a vehicle passes by the

side of your vehicle

5

●When a detected vehicle turns

while approaching the vehicle

●When there are spinning objects

near your vehicle such as the fan

of an air conditioning unit

●When water is splashed or

sprayed toward the rear bumper,

such as from a sprinkler

●Moving objects (flags, exhaust

fumes, large rain droplets or

snowflakes, rain water on the road

surface, etc.)

●When the distance between your

vehicle and a guardrail, wall, etc.,

that enters the detection area is

short

●Gratings and gutters

Owners Manual_USA_M42C01_en

Driving -> RCTA (Rear Cross Traffic Alert) for Your Toyota bZ4X SUV Second Generation (2025-2026)

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