LEXUS RX 350 L (2019 year). Instruction - part 20

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4-5. Using the driving support systems

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RX350/RX350L_U

The BSM function uses radar sensors to detect the following vehicles traveling in
adjacent lanes and advises the driver of the presence of such vehicles via the
indicators on the outside rear view mirrors.

Vehicles that are traveling in areas that are not visible using the outside rear
view mirrors (the blind spots)
Vehicles that are approaching rapidly from behind in areas that are not visible
using the outside rear view mirrors (the blind spots)

BSM function

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4-5. Using the driving support systems

RX350/RX350L_U

The areas that vehicles can be detected in are outlined below.

The range of each detection area is:

Approximately 1.6 ft. (0.5 m) to 11.5 ft. (3.5 m) from either side of the vehicle

: The area between the side of the vehicle and 1.6 ft. (0.5 m) from the side of the vehicle

cannot be detected.

Approximately 3.3 ft. (1 m) forward of the rear bumper
Approximately 9.8 ft. (3 m) from the rear bumper
Approximately 9.8 ft. (3 m) to 197 ft. (60 m) from the rear bumper

: The greater the difference in speed between your vehicle and the detected vehicle is,

the farther away the vehicle will be detected, causing the outside rear view mirror
indicator to illuminate or flash.

BSM function detection areas

WARNING

■

Cautions regarding the use of the function
The driver is solely responsible for safe driving. Always drive safely, taking care to

observe your surroundings.
The BSM function is a supplementary function which alerts the driver that a vehicle is in

a blind spot of the outside rear view mirrors or is approaching rapidly from behind into

a blind spot. Do not overly rely on the BSM function. As the function cannot judge if it is

safe to change lanes, over reliance could lead to an accident resulting in death or seri-

ous injury.
As the system may not function correctly under certain conditions, the driver’s own

visual confirmation of safety is necessary.

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4-5. Using the driving support systems

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RX350/RX350L_U

■

The BSM function is operational when
The BSM function is operational when all of the following conditions are met:

●

The BSM function is on.

●

The shift lever is in a position other than R.

●

The vehicle speed is greater than approximately 10 mph (16 km/h).

■

The BSM function will detect a vehicle when
The BSM function will detect a vehicle present in the detection area in the following situ-

ations:

●

A vehicle in an adjacent lane overtakes your vehicle.

●

Another vehicle enters the detection area when it changes lanes.

■

Conditions under which the BSM function will not detect a vehicle
The BSM function is not designed to detect the following types of vehicles and/or

objects:

●

Small motorcycles, bicycles, pedestrians, etc.

●

Vehicles traveling in the opposite direction

●

Guardrails, walls, signs, parked vehicles and similar stationary objects

●

Following vehicles that are in the same lane

●

Vehicles traveling 2 lanes away from your vehicle

: Depending on the conditions, detection of a vehicle and/or object may occur.

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4-5. Using the driving support systems

RX350/RX350L_U

■

Conditions under which the BSM function may not function correctly

●

The BSM function may not detect vehicles correctly in the following situations:
• When the sensor is misaligned due to a strong impact to the sensor or its surround-

ing area

• When mud, snow, ice, a sticker, etc. is covering the sensor or surrounding area on

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 approaching with only a small gap between each vehicle

• When the distance between your vehicle and a following vehicle is short

• When there is a significant difference in speed between your vehicle and the vehicle

that enters the detection area

• When the difference in speed between your vehicle and another vehicle is changing

• When a vehicle enters a detection area traveling at about the same speed as your

vehicle

• As your vehicle starts from a stop, a vehicle remains in the detection area

• When driving up and down consecutive steep inclines, such as hills, dips on the road,

etc.

• When driving on roads with sharp bends, consecutive curves, or uneven surfaces

• When vehicle lanes are wide, or when driving on the edge of a lane, and the vehicle

in an adjacent lane is far away from your vehicle

• When towing a trailer (vehicles with towing package)

• When items such as a bicycle carrier are installed on the rear of the vehicle

• When there is a significant difference in height between your vehicle and the vehicle

that enters the detection area

• Immediately after the BSM function is turned on

●

Instances of the BSM function unnecessarily detecting a vehicle and/or object may

increase in the following situations:
• When the sensor is misaligned due to a strong impact to the sensor or its surround-

ing area

• When the distance between your vehicle and a guardrail, wall, etc. that enters the

detection area is short

• When driving up and down consecutive steep inclines, such as hills, dips on the road,

etc.

• When vehicle lanes are narrow, or when driving on the edge of a lane, and a vehicle

traveling in a lane other than the adjacent lanes enters the detection area

• When driving on roads with sharp bends, consecutive curves, or uneven surfaces

• When the tires are slipping or spinning

• When the distance between your vehicle and a following vehicle is short

• When a bicycle carrier or other accessory is installed to the rear of the vehicle

• When towing a trailer (vehicles with towing package)

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4-5. Using the driving support systems

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RX350/RX350L_U

The RCTA function uses radar sensors 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

■

Rear Cross Traffic Auto Brake function (if equipped)
When the Intelligent Clearance Sonar with Rear Cross Traffic Auto Brake is
enabled and a vehicle approaching from the right or left at the rear of the vehi-
cle is detected, the Rear Cross Traffic Auto Brake function will perform brake
control to reduce the likelihood of an impact with the approaching vehicle.
Intelligent Clearance Sonar with Rear Cross Traffic Auto Brake:

P. 336

RCTA function

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4-5. Using the driving support systems

RX350/RX350L_U

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RCTA icon display (if equipped)
When a vehicle approaching from the right or left at the rear of the vehicle is
detected, the following will be displayed on the audio system screen.

Display

Content

A vehicle is approaching from the left at the rear of the vehicle

A vehicle is approaching from the right at the rear of the vehicle

Vehicles are approaching from both sides of the vehicle

The RCTA function is malfunctioning (

P. 315)

WARNING

■

Cautions regarding the use of the function
The driver is solely responsible for safe driving. Always drive safely, taking care to

observe your surroundings.
The RCTA function is only a supplementary function which alerts the driver that a vehi-

cle 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 confirma-

tion of safety is necessary. Over reliance on this function may lead to an accident

resulting death or serious injury.

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4-5. Using the driving support systems

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RX350/RX350L_U

The areas that vehicles can be detected in are outlined below.

The buzzer can alert the driver of faster vehicles approaching from farther away.
Example:

■

The RCTA function is operational when
The RCTA function operates when all of the following conditions are met:

●

The RCTA function is on.

●

The shift lever is in R.

●

The vehicle speed is less than approximately 5 mph (8 km/h).

●

The approaching vehicle speed is between approximately 5 mph (8 km/h) and 18 mph

(28 km/h).

RCTA function detection areas

Approaching vehicle

Speed

Approximate

alert distance

Fast

18 mph (28 km/h)

65 ft. (20 m)

Slow

5 mph (8 km/h)

18 ft. (5.5 m)

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4-5. Using the driving support systems

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Conditions under which the RCTA function 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

●

Guardrails, walls, signs, parked vehicles and similar stationary objects

●

Small motorcycles, bicycles, pedestrians, etc.

●

Vehicles moving away from your vehicle

●

Vehicles approaching from the parking spaces next to your vehicle

: Depending on the conditions, detection of a vehicle and/or object may occur.

■

Conditions under which the RCTA function may not function correctly

●

The RCTA function may not detect vehicles correctly in the following situations:
• When the sensor is misaligned due to a strong impact to the sensor or its surround-

ing area

• When mud, snow, ice, a sticker, etc. is covering the sensor or surrounding area on

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 approaching with only a small gap between each vehicle

• When a vehicle is approaching at high speed

• When towing a trailer (vehicles with towing package)

●

Vehicles that the sensors cannot detect due to

obstructions

• When backing up on a slope with a sharp

change in grade

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4-5. Using the driving support systems

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RX350/RX350L_U

• Immediately after the RCTA function is turned on

• Immediately after the engine is started with the RCTA function on

●

Instances of the RCTA function unnecessarily detecting a vehicle and/or object may

increase in the following situations:
• When a vehicle passes by the side of your vehicle

• When the distance between your vehicle 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

You can change the BSM function/RCTA function settings.

Press the “MENU” button on the Remote Touch, and then select

on the

screen.
Select “Vehicle”, and then select “Blind Spot Monitor Settings” on the screen.
Select the desired setting. (

P. 731)

• When backing out of a shallow angle park-

ing spot

• When the sensors cannot detect a vehicle

due to obstructions

• When the parking space faces a street and

vehicles are being driven on the street

Setting up BSM function/RCTA function

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4-5. Using the driving support systems

RX350/RX350L_U

Front corner sensors
Front center sensors
Rear corner sensors
Rear center sensors

Press “

” or “” of the meter control

switches, select

Press “

” or “” of the meter control

switches, select “Parking Assist”.

When on, the indicator light comes on
to inform the driver that the system is
operational.

Intuitive parking assist



: If equipped

The distance from your vehicle to a nearby wall or other stationary object
when parallel parking or maneuvering into a garage is measured by the sen-
sors and communicated via the displays and a buzzer. Always check the sur-
rounding area when using this system.

Types of sensors



Except F SPORT models



F SPORT models

Turning the intuitive parking assist on/off

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4-5. Using the driving support systems

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RX350/RX350L_U

When the sensors detect an obstacle, the following displays inform the driver of
the position and distance to the obstacle.

■

Multi-information display

Front corner sensor operation
Front center sensor operation
Rear corner sensor operation
Rear center sensor operation

■

Lexus Display Audio or navigation system (8-inch display) screen

Intuitive parking assist

When the vehicle is moving forward.
A graphic is automatically displayed

when an obstacle is detected. The

screen can be set so that the graphic

is not displayed. (

P. 332)

: Select to mute the buzzer

sounds.

Intuitive parking assist
Rear Cross Traffic Alert (if
equipped)
When the vehicle is moving back-
ward.

A simplified image is displayed on

the upper part of the screen when an

obstacle is detected.

Display

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4-5. Using the driving support systems

RX350/RX350L_U

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Navigation system (12.3-inch display) screen

Intuitive parking assist
Rear Cross Traffic Alert (if
equipped)

A graphic is automatically displayed

on the side display when an obstacle

is detected. The screen can be set so

that the graphic is not displayed.

(

P. 332)

: Select to mute the buzzer

sounds. This function is available
when the vehicle is moving forward.

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4-5. Using the driving support systems

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RX350/RX350L_U

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Distance display
Sensors that detect an obstacle will illuminate continuously or blink.

Sensor detection display, obstacle distance

Display

Insert display

Approximate distance to object

Lexus parking

assist moni-

tor

Panoramic

view monitor

Front and rear

center sensor

Front and rear

corner sensor

(continuous)

(blinking

slowly)

(blinking

slowly)

Front center sen-

sor:

3.3 ft. (100 cm)

2.0 ft. (60 cm)

Rear center sen-

sor:

4.9 ft. (150 cm)

2.0 ft. (60 cm)



(continuous)

(blinking)

2.0 ft. (60 cm) to

1.5 ft. (45 cm)



RX350

Front corner

sensor:

2.0 ft. (60 cm) to

1.5 ft. (45 cm)

Rear corner sen-

sor:

2.0 ft. (60 cm) to

1.5 ft. (45 cm)



RX350L

Front corner

sensor:

2.0 ft. (60 cm) to

1.5 ft. (45 cm)

Rear corner sen-

sor:

2.1 ft. (66 cm) to

1.5 ft. (45 cm)

(continuous)

(blinking

rapidly)

(blinking

rapidly)

1.5 ft. (45 cm) to

1.2 ft. (35 cm)

1.5 ft. (45 cm) to

1.2 ft. (35 cm)

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4-5. Using the driving support systems

RX350/RX350L_U

: The images may differ from those shown in the illustrations. (

P. 327)

: Multi-information display

: Audio system screen

: Lexus Display Audio or navigation system (8-inch display) screen

■

Buzzer operation and distance to an object
A buzzer sounds when the sensors are operating.

●

The buzzer sounds faster as the vehicle approaches an object.
When the vehicle comes within the following distance of the object, the
buzzer sounds continuously: Approximately 1.2 ft. (35 cm).

●

When 2 or more objects are detected simultaneously, the buzzer system
responds to the nearest object. If one or both come within the above dis-
tances, the beep will repeat a long tone, followed by fast beeps.

(blinking

continuous

)

(continuous)

Less than

1.2 ft. (35 cm)

Less than

1.2 ft. (35 cm)

Display

Insert display

Approximate distance to object

Lexus parking

assist moni-

tor

Panoramic

view monitor

Front and rear

center sensor

Front and rear

corner sensor

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4-5. Using the driving support systems

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RX350/RX350L_U

Approximately 3.3 ft. (100 cm)
Approximately 4.9 ft. (150 cm)
Approximately 2.0 ft. (60 cm)
RX350:
Approximately 2.0 ft. (60 cm)
RX350L:
Approximately 2.1 ft. (66 cm)

The diagram shows the detection range

of the sensors. Note that the sensors

cannot detect objects that are extremely

close to the vehicle.
The range of the sensors may change

depending on the shape of the object,

etc.

Detection range of the sensors

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332

4-5. Using the driving support systems

RX350/RX350L_U

You can change the buzzer sounds volume and the screen operating conditions
when the engine switch is in IGNITION ON mode.

Press the “MENU” button on the Lexus Display Audio controller/Remote
Touch, and then select

on the screen.

Select “Vehicle”, and then select “LEXUS Park Assist” on the screen.
Select the desired item.

The buzzer sounds volume can be adjusted.
On or off can be selected for intuitive parking assist display.
Both the front or rear center sensors display and tone indication can be set.

Setting up intuitive parking assist

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

Lexus Display Audio screen



Navigation system screen

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