TOYOTA BZ4X 2022 Owners Manual (in English)
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5-4. Using the driving support systems
Driving
Vehicles with Advanced Park
*: Automatic buzzer mute function is enabled. (P.340)
Approximate distance to obstacleBuzzer
Front center sensor: 
Approximately 200 cm to100 cm (6.6 ft.  
to 3.3 ft.) 
Rear center sensor:
Approximately 200 cm to 150 cm (6.6 ft.  
to 4.9 ft.) 
Side sensor:
Approximately 200 cm to 165 cm (6.6 ft.  
to 5.4 ft.) 
Corner sensor:
Approximately 200 cm to 60 cm (6.6 ft. to  
2.0 ft.)
Does not sound (Display only)
Front center sensor: 
Approximately 100 cm to 60cm (3.3 ft. to  
2.0 ft.)*
Rear center sensor: 
Approximately 150 cm to 60cm (4.9 ft. to  
2.0 ft.)*
Side sensor: 
Approximately 165 cm to 60 cm (5.4 ft. to  
2.0ft.)*
Slow
Side sensor: Approximately 60 cm to 40 
cm (2.0 ft. to 1.3 ft.)*
Other than side sensor: Approximately 
60 cm to 45 cm (2.0 ft. to 1.5 ft.)*
Medium
Side sensor: Approximately 40 cm to 30 
cm (1.3 ft. to 1.0 ft.)*
Other than side sensor: Approximately 
45 cm to 30 cm (1.5 ft. to 1.0 ft.)*
Fast
Less than approximately 30 cm (1.0 ft.)ContinuousLess than approximately 15 cm (0.5 ft.) 
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5-4. Using the driving support systems
■Buzzer operation and dis- 
tance to an object 
A buzzer sounds when the sensors  
are operating. 
 The buzzer beeps faster as the  
vehicle approaches an object. 
When the vehicle comes within  
approximately 30 cm (1.0 ft.) of  
the object, the buzzer sounds  
continuously. 
 When 2 or more sensors simulta- 
neously detect a static object,  
the buzzer sounds for the near- 
est object. 
 Even when the sensors are oper- 
ating, the buzzer will be muted in  
some situations. (automatic  
buzzer mute function)
■Adjusting the buzzer volume 
The buzzer volume can be adjusted  
on the multi-information display. 
Use the meter control switches to  
change settings. ( P.176) 
1 Press   or   of the meter  
control switch to select  . 
2 Press   or   of the meter  
control switch to select   and  
then press and hold  . 
3 Select the volume and then  
press  .
Each time the switch is pressed, the  volume level will change between 1, 2, and 3.
■Muting a buzzer temporarily 
When an object is detected, the  
temporary mute switch is displayed 
on the multimedia display system. 
Select   to mute a buzzer of the  
Toyota parking assist-sensor,  
RCTA, and RCD all together. 
Mute will be canceled automatically  
in the following situations: 
 When the shift position is  
changed. 
 When the vehicle speed exceeds  
a certain speed. 
 When there is a malfunction in a  
sensor or the system is tempo- 
rarily unavailable. 
 When the operating function is  
disabled manually. 
 When the power switch is turned  
off. 
The object warning function informs  
the driver of the existence of  
objects along the side of the vehi- 
cle, using a display and buzzer, if  
the objects are within the estimated  
path of the vehicle.
Object warning function  
(vehicles with Advanced 
Park) 
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Driving
Object 
Calculated vehicle route 
When the vehicle is moving, the side sensors or side cameras ca n detect  
objects. While the vehicle is moving, if a detected object can  no longer be  
detected by the side sensors or side cameras, the location of t he object rel- 
ative to the vehicle is estimated. If the object is determined  to be in the esti- 
mated path of the vehicle, the object warning function will ope rate. 
Object detected by side sensors or side cameras 
1 The vehicle is stopped and objects along the sides of the vehicle are not  
detected. 
2 Objects are detected as the vehicle is moving. 
3 Even though the objects are outside of the detection area of the side  
sensors or side cameras, a warning is displayed and a buzzer so unds.
■Object warning function operating  conditions
●The Advanced Park is operating.
●The vehicle moves about 7 m (23.0 ft.)  
after the EV system is started.
●The R shift position is selected.
●After the D shift position has been  selected, the vehicle has moved 7 m  
(23.0 ft.) or less.
●Camera switch has been pressed and  
the multimedia display is displayed.
●The front or rear sensor detects a sta- 
tionary object.
■Detection of objects along the  sides of the vehicle
●Objects along the sides of the vehicle are not instantaneously detected. The location of objects in relation to the  
vehicle is estimated after they are first  detected by the front or rear side sen-sors, or side cameras. Therefore, after  
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5-4. Using the driving support systems 
the power switch is changed to ON,  
even if an object is along the side of  the vehicle, it may not be detected until the vehicle has been driven a  
small amount and the side sensors or  side cameras completely scan the areas along the sides of the vehicle.
●If a vehicle, person, animal, etc., is detected by a side sensors or side  
cameras, but then leaves the detec- tion area of the side sensors or side cameras, the system will assume the  
object has not moved.
WARNING
■Side sensors and side cameras 
In situations such as the following, the  
function may not operate correctly,  possibly leading to an accident. Pro-ceed carefully.
●When starting off shortly after the power switch is turned to ON and a  
small vehicle or other object which  cannot be detected by a front side sensor is next to the vehicle. 
In the situation shown in the following  
illustration, even if the vehicle starts 
off, the vehicle on the left will not be 
detected and the object warning func-
tion will not operate.
●When an object or person is in a  position which cannot be detected  
by the side sensors or side cam- eras.
●When, after the side sensors have completed scanning the areas along the sides of the vehicle, a  
vehicle, person, or other object  approaches the side of the vehicle and cannot be detected.
●When the outside rear view mirror is closed, the side sensors or side  
cameras cannot detect objects.
●If the 12-volt battery was dis-
charged or has been removed and  installed, fold and extend the out-side rear view mirrors. 
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Driving
*: If equipped
Meter control switches
Turning the RCTA function on/off.
Outside rear view mirror indica- 
tors
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.
Multimedia display
If a vehicle approaching from the right 
or left at the rear of the vehicle is 
detected, the RCTA icon ( P.344) for  
the detected side will be displayed on 
the multimedia display. This illustration 
shows an example of a vehicle 
approaching from both sides of the 
vehicle.
Driving assist information indica- 
tor
When the RCTA is off, “Rear Cross  
Traffic Alert OFF” will be displayed on 
the multi-information display.
RCTA (Rear Crossing  
Traffic Alert)*
The RCTA function uses the  
BSM rear side radar sensors  
installed behind the rear  
bumper. This function is  
intended to assist the driver in  
checking areas that are not  
easily visible when backing  
up.
WARNING
■Cautions regarding the use of  the system 
The driver is solely responsible for  safe driving. Always drive safely, tak-ing care to observe your surround- 
ings. 
The RCTA function is only a supple- 
mentary 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 func- 
tion correctly under certain conditions,  the driver’s own visual confirmation of safety is necessary. 
Over reliance on this function may  lead to an accident resulting death or  
serious injury.
■To ensure the system can oper-
ate properly 
 P. 3 2 5
System components 
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The RCTA can be enabled/disabled  
on   of the multi-information dis- 
play. ( P.176)
When the RCTA function is off, the driv- 
ing assist information indicator 
( P.169) will illuminate. At this time,  
“Rear Cross Traffic Alert OFF” will be 
displayed on the multi-information dis-
play. Each time the power switch is 
turned to ON, the RCTA function is 
enabled.
■Outside rear view mirror indicator  
visibility 
In strong sunlight, the outside rear view  mirror indicator may be difficult to see.
■Hearing the RCTA buzzer 
The RCTA buzzer may be difficult to  hear over loud noises, such as high audio volume.
■Radar sensors 
 P. 3 2 5
■Operation of the RCTA func- 
tion 
The RCTA function uses radar sen- 
sors to detect vehicles 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  
indicators and sounding a buzzer. 
Approaching vehicles 
Detection areas of approaching  
vehicles
■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. 
This illustration shows an example  
of a vehicle approaching from both  
sides of the vehicle.
■RCTA function detection areas 
The areas that vehicles can be  
detected in are outlined below.
Turning the RCTA function  
on/off
RCTA function 
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The buzzer can alert for faster vehi- 
cles approaching from farther away. 
Example:
■The RCTA function is operational  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 approximately 15 km/h (9 mph).
●The approaching vehicle speed is between approximately 8 km/h (5 mph) and 56 km/h (34 mph).
■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-information  
display. ( P.340)
■Muting a buzzer temporarily 
When an object is detected, the tempo- 
rary mute switch is displayed on the 
multimedia display system. 
Select   to mute a buzzer of the  
Toyota parking assist-sensor, RCTA and  
RCD all together. 
Mute will be canceled automatically in  the following situations:
●When the shift position is changed.
●When the vehicle speed exceeds a certain speed.
●When there is a malfunction in a sen-sor or the system is temporarily unavailable.
●When the operating function is dis-abled manually.
●When the power switch is turned off.
■Conditions under which the system will not detect a vehicle 
The RCTA function is not designed to  detect the following types of vehicles and/or objects:
●Vehicles approaching from directly behind
●Vehicles backing up in a parking space next to your vehicle
●Vehicles that the sensors cannot detect due to obstructions
●Guardrails, walls, signs, parked vehi- 
cles and similar stationary objects*
●Small motorcycles, bicycles, pedestri-
ans, etc.*
●Vehicles moving away from your vehi- cle
Approach- 
ing vehicleSpeed
 A pp r ox i - 
mate alert  
distance
Fast56 km/h (34  
mph)
40 m (131 
ft.)
Slow8 km/h (5 
mph)
5.5 m (18 
ft.) 
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5-4. Using the driving support systems
●Vehicles approaching from the park- 
ing spaces next to your vehicle*
●The distance between the sensor and  
approaching vehicle gets too close*: Depending on conditions, detection of  
a vehicle and/or object may occur.
■Situations in which the system may  not operate properly 
The RCTA function may not detect vehi- 
cles correctly in the following situations:
●When the sensor is misaligned due to 
a strong impact to the sensor or its  surrounding area
●When mud, snow, ice, a sticker, etc.,is covering the sensor or surrounding area on the position above the rear  
bumper
●When driving on a road surface that is 
wet with standing water during bad  weather, such as heavy rain, snow, or fog
●When multiple vehicles are approach-ing with only a small gap between  
each vehicle
●When a vehicle is approaching at high 
speed
●When equipment that may obstruct a 
sensor is installed, such as a towing  eyelet, bumper protector (an addi-tional trim strip, etc.), bicycle carrier,  
or snow plow
●When backing up on a slope with a 
sharp change in grade
●When backing out of a sharp angle  parking spot
●Immediately after the RCTA function 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 difference in height between your vehicle and the vehicle that enters the detection  
area
●When a sensor or the area around a 
sensor is extremely hot or cold
●If the suspension has been modified 
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 
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Driving
●When a vehicle turns into the detec- 
tion area
■Situations in which the system may 
operate even if there is no possibil- ity of a collision 
Instances of the RCTA function unnec- 
essary detecting a vehicle and/or object  may increase in the following situations:
●When the parking space faces a street and vehicles are being driven on the street
●When the distance between your vehi-cle and metal objects, such as a  
guardrail, wall, sign, or parked vehicle,  which may reflect electrical waves toward the rear of the vehicle, is short
●When equipment that may obstruct a  
sensor is installed, such as a towing  eyelet, bumper protector (an addi-tional trim strip, etc.), bicycle carrier,  
or snow plow
●When a vehicle passes by the side of 
your vehicle
●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 vehi-
cle and a guardrail, wall, etc., that  enters the detection area is short
●Gratings and gutters 
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●When a sensor or the area around a  
sensor is extremely hot or cold
●If the suspension has been modified 
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
*: If equipped
RCD (Rear Camera  
Detection)*
When the vehicle is backing  
up, the rear camera detection  
function can detect pedestri- 
ans in the detection area  
behind the vehicle. If a pedes- 
trian is detected, a buzzer will  
sound and an icon will be dis- 
played on the multimedia dis- 
play to inform the  driver of the  
pedestrian.
WARNING
■Cautions regarding the use of  the system 
The recognition and control capabili- ties for this system are limited. 
The driver should always drive safely  
by always being responsible without  over relying on the system and have a understanding of the surrounding situ- 
ations.
■To ensure the system can oper-
ate properly 
Observe the following, otherwise  there is the danger that could lead to  
an accident.
●Always clean the camera without 
damaging it.
●Do not install market electronic 
parts (such as Illuminated license  plate, fog lamps, etc.) in the camera vicinity.