Lexus LX570 (2021 year). Manual in english - page 22

368

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If you notice any symptoms

If you notice any of the following symptoms, refer to the likely cause and the
solution, and re-check.
If the symptom is not resolved by the solution, have the vehicle inspected by
your Lexus dealer.

Likely cause

Solution



The image is difficult to see

• The vehicle is in a dark area

• The temperature around the lens is

either high or low

• The outside temperature is low

• There are water droplets on the cam-

era

• It is raining or humid

• Foreign matter (mud etc.) is adhering to

the camera

• Sunlight or headlights are shining

directly into the camera

• The vehicle is under fluorescent lights,

sodium lights, mercury lights, etc.

Drive while visually checking the vehicle’s

surroundings. (Use the Multi-terrain

Monitor again once conditions have been

improved.)

The procedure for adjusting the picture

quality of the Multi-terrain Monitor is

same as the procedure for adjusting the

navigation screen. Refer to the

“NAVIGATION SYSTEM OWNER’S

MANUAL”.



The image is blurry

Dirt or foreign matter (such as water

droplets, snow, mud, etc.) is adhering to

the camera

Flush the camera with a large quantity of

water and wipe the camera lens clean

with a soft and wet cloth.



The image is out of alignment

The camera or surrounding area has

received a strong impact

Have the vehicle inspected by your Lexus

dealer.



The guide lines are very far out of alignment

The camera position is out of alignment

Have the vehicle inspected at your Lexus

dealer.

• The vehicle is tilted (there is a heavy

load on the vehicle, tire pressure is low

due to a tire puncture, etc.)

• The vehicle is used on an incline

If this happens due to these causes, it

does not indicate a malfunction.

Drive while visually checking the vehicle’s

surroundings.

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4-5. Using the driving support systems

iving



The projected course lines move even though the steering wheel is straight (vehi-

cle width extension guide lines and projected course lines are not aligned)

There is a malfunction in the signals being

output by the steering sensor

Have the vehicle inspected by your Lexus

dealer.



Guide lines are not displayed

The back door is open

Close the back door.

If this does not resolve the symptom, have

the vehicle inspected by your Lexus

dealer.



“!” is displayed

The battery is disconnected and recon-

nected

Turn the steering wheel fully to right and

left.

If this does not resolve the symptom, have

the vehicle inspected by your Lexus

dealer.

There is a malfunction in the Multi-terrain

Monitor

Have the vehicle inspected by your Lexus

dealer.

NOTICE

■

How to use the camera

●

The Multi-terrain Monitor system may not operate properly in the following cases.
• If the front or the rear of the vehicle or the outside rear view mirror has been hit,

the camera’s position and mounting angle may have changed.

• As the camera has a water proof construction, do not detach, disassemble or

modify it. This may cause incorrect operation.

• When cleaning the camera lens, flush the camera with a large quantity of water

and wipe it with a soft and wet cloth. Strongly rubbing the camera lens may cause

the camera lens to be scratched and unable to transmit a clear image.

• Do not allow organic solvent, car wax, window cleaner or glass coat to adhere to

the camera. If this happens, wipe it off as soon as possible.

• If the temperature changes rapidly, such as when hot water is poured on the vehi-

cle in cold weather, the system may not operate normally.

• When washing the vehicle, do not apply intensive bursts of water to the camera or

camera area. Doing so may result in the camera malfunctioning.

• When the camera is used under fluorescent lights, sodium light or mercury light

etc., the lights and the illuminated areas may appear to flicker.

• The camera can be damaged by flying rocks and other debris.

●

Do not expose the camera to strong impact as this could cause a malfunction. If this

happens, have the vehicle inspected by your Lexus dealer as soon as possible.

Likely cause

Solution

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4-5. Using the driving support systems

BSM (Blind Spot Monitor)

The Blind Spot Monitor is a system that has 2 functions:

●

The BSM (Blind Spot Monitor) function
Assists the driver in making a decision when changing lanes

●

RCTA (Rear Cross Traffic Alert) function
Assists the driver when backing up

These functions use same sensors.

Summary of the Blind Spot Monitor

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4-5. Using the driving support systems

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Multi-information display

The BSM function/RCTA function can be turned on/off. (



P. 372)

The RCTA function is available when the BSM function is on.

Outside rear view mirror indicators

BSM function:

When a vehicle is detected in a blind spot of the outside rear view mirrors or

approaching rapidly from behind into a blind spot, the outside rear view mirror indica-

tor on the detected side will illuminate. If the turn signal lever is operated toward the

detected side, the outside rear view mirror indicator will flash.
RCTA function:

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.

“BSM” indicator/“RCTA” indicator

When the BSM function/RCTA function is turned on, the indicator illuminates

Monitor screen display (RCTA function only)

If a vehicle approaching from the right or left at the rear of the vehicle is detected, the

RCTA icon (



P. 380) for the detected side will be displayed on the monitor screen.

This illustration shows an example of a vehicle approaching from the left at the rear of

the vehicle.

RCTA buzzer (RCTA function only)

If a vehicle approaching from the right or left at the rear of the vehicle is detected, a

buzzer will sound. The buzzer also sounds for approximately 1 second immediately

after the BSM function is operated to turn the system on.

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4-5. Using the driving support systems

Press

of the meter control switches, select

Press

of the meter control switches, select “BSM”, and then press

Press

of the meter control switches, select “BSM” or “RCTA”, and

then press

■

Outside rear view mirror indicator visibility

In strong sunlight, the outside rear view mirror indicator may be difficult to see.

■

Hearing RCTA buzzer

The RCTA buzzer may be difficult to hear over loud noises, such as if the audio system

volume is high.

■

When “Blind Spot Monitor Unavailable” is shown on the multi-information display

Water, snow, mud, etc., may be built up in the vicinity of the sensor area of bumper. (



P. 374)

Removing the water, snow, mud, etc., from the vicinity of the sensor area of bumper should

return it to normal.

Also, the sensor may not function normally when used in extremely hot or cold weather.

■

When “Blind Spot Monitor System Malfunction” is shown on the multi-information dis-

play

There may be a sensor malfunction or voltage abnormality. Have the vehicle inspected at

your Lexus dealer.

■

Certification for the Blind Spot Monitor



For vehicles sold in the U.S.A., Hawaii, Guam and Puerto Rico

Turning the BSM function/RCTA function on/off

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4-5. Using the driving support systems

WARNING

■

Handling the radar sensor

One Blind Spot Monitor sensor is installed inside the left and right side of the vehicle

rear bumper respectively. Observe the following to ensure the Blind Spot Monitor can

function correctly.

●

Keep the sensors and the surrounding areas

on the rear bumper clean at all times.

If a sensor or its surrounding area on the rear

bumper is dirty or covered with snow, the

Blind Spot Monitor may not operate and a

warning message (



P. 372) will be dis-

played. In this situation, clear off the dirt or

snow and drive the vehicle with the operation

conditions of the BSM function (



P. 377)

satisfied for approximately 10 minutes. If the

warning message does not disappear, have

the vehicle inspected by your Lexus dealer.

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4-5. Using the driving support systems

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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)

WARNING

■

Handling the radar sensor

●

Do not subject a sensor or its surrounding area on the rear bumper to a strong

impact.

If a sensor is moved even slightly off position, the system may malfunction and vehi-

cles may not be detected correctly.

In the following situations, have your vehicle inspected by your Lexus dealer.
• A sensor or its surrounding area is subject to a strong impact.

• If the surrounding area of a sensor is scratched or dented, or part of it has become

disconnected.

●

Do not disassemble the sensor.

●

Do not attach stickers to the sensor or surrounding area on the rear bumper.

●

Do not modify the sensor or surrounding area on the rear bumper.

●

Do not paint the rear bumper any color other than an official Lexus color.

BSM function

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4-5. Using the driving support systems

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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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

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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 in 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 a bicycle carrier or other accessory is installed to 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 in 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

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4-5. Using the driving support systems

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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

RCTA function

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4-5. Using the driving support systems

■

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 monitor 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. 372)

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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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 Rear Cross Traffic Alert function is operational when

The Rear Cross Traffic Alert 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 Rear Cross Traffic Alert function will not detect a vehicle

The Rear Cross Traffic Alert 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.

●

Vehicles that the sensors cannot detect due to

obstructions

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4-5. Using the driving support systems

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Conditions under which the Rear Cross Traffic Alert function may not function cor-

rectly

●

The Rear Cross Traffic Alert 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

• Immediately after the BSM function is turned on

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

• When backing up on a slope with a sharp

change in grade

• When backing out of a shallow angle park-

ing spot

• When the sensors cannot detect a vehicle

due to obstructions

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4-5. Using the driving support systems

●

Instances of the Rear Cross Traffic Alert 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 “Setup” on
the screen.
Select “Vehicle”, and then select “Blind Spot Monitor Settings” on the screen.
Select the desired setting. (



P. 596)

• 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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