LEXUS GX 460 (2019 year). Instruction - part 23

360

4-5. Using the driving support systems

CAUTION

■

Replacing tires
Make sure that all tires are of the same size, brand, tread pattern and total load capac-

ity. In addition, make sure that the tires are inflated to the recommended tire inflation

pressure level.
The ABS/Multi Terrain ABS, TRAC/Active TRAC and VSC/Trailer Sway Control will

not function correctly if different tires are installed on the vehicle.

Contact your Lexus dealer for further information when replacing tires or wheels.

■

Handling of tires and the suspension
Using tires with any kind of problem or modifying the suspension will affect the driving

assist systems, and may cause the system to malfunction.

■

Trailer Sway Control precaution
The Trailer Sway Control system is not able to reduce trailer sway in all situations.

Depending on many factors such as the conditions of the vehicle, trailer, road surface,

and driving environment, the Trailer Sway Control system may not be effective. Refer to

your trailer owner’s manual for information on how to tow your trailer properly.

■

If trailer sway occurs
Observe the following precautions.

Failing to do so may cause death or serious injury.

●

Firmly grip the steering wheel. Steer straight ahead.

Do not try to control trailer swaying by turning the steering wheel.

●

Begin releasing the accelerator pedal immediately but very gradually to reduce

speed.

Do not increase speed. Do not apply vehicle brakes.

If you make no extreme correction with the steering or brakes, your vehicle and trailer

should stabilize. (

P. 188)

361

4-5. Using the driving support systems

4

Dr

iving

BSM (Blind Spot Monitor)



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

●

The Blind Spot Monitor function 
Assists the driver in making the decision when changing lanes

●

The Rear Cross Traffic Alert function 
Assists the driver when backing up

These functions use same sensors.



: If equipped

Summary of the Blind Spot Monitor

362

4-5. Using the driving support systems

The Blind Spot Monitor on/off screen and indicator

The Blind Spot Monitor system can be turned on/off on the multi-information display.

When the system is set to on, the indicator illuminates in the meter. The Blind Spot

Monitor function and the Rear Cross Traffic Alert function are turned on/off simulta-

neously.

Outside rear view mirror indicator

The Blind Spot Monitor function: 

When a vehicle is detected in the blind spot, the outside rear view mirror indicator

comes on while the turn signal lever is not operated. If the turn signal lever is operated

toward the detected side, the outside rear view mirror indicator flashes.
The Rear Cross Traffic Alert function: 

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

outside rear view mirror indicators flash.

The Rear Cross Traffic Alert buzzer (The Rear Cross Traffic Alert function
only)

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

buzzer sounds from behind the rear seat.

1

2

3

363

4-5. Using the driving support systems

4

Dr

iving

Display the Blind Spot Monitor on/off screen.

Press the menu switch.
The multi-information display will
change modes to electronic fea-
tures control mode.
Press the “ENTER” switch
upwards or downwards until
“BSM” appears in the multi-infor-
mation display.

Press the “ENTER” switch to change
to “ON”.
“BSM” indicator will be displayed.

Each pressing of the switch turns the

Blind Spot Monitor on and off.
When on, the buzzer sounds to inform

the driver that the system is operational.

Press the menu switch to change to
the normal display.

Turning the Blind Spot Monitor system on

1

1

2

2

364

4-5. Using the driving support systems

■

The outside rear view mirror indicators visibility
When under strong sunlight, the outside rear view mirror indicator may be difficult to

see.

■

The Rear Cross Traffic Alert buzzer hearing
The Rear Cross Traffic Alert buzzer may be difficult to hear over loud noises such as high

audio volume.

■

When there is a malfunction in the Blind Spot Monitor
If a system malfunction is detected due to any of the following reasons, warning mes-

sages will be displayed: (

P. 529, 530)

●

There is a malfunction with the sensors

●

The sensors have become dirty

●

The outside temperature is extremely high or low

●

The sensor voltage has become abnormal

■

Certification for the Blind Spot Monitor



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



For vehicles sold in Canada

365

4-5. Using the driving support systems

4

Dr

iving

CAUTION

■

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.

●

Do not subject the sensor or surrounding area on the bumper to a strong impact. If

the sensor moves even slightly off position, the system may malfunction and vehicles

that enter the detection area may not be detected. If the sensor or surrounding area is

subject to a strong impact, always have the area inspected by your Lexus dealer.

●

Do not disassemble the sensor.

●

Do not attach accessories or stickers to the sensor or surrounding area on the

bumper.

●

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

●

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

●

If the sensor needs to be replaced, contact your Lexus dealer.

●

Keep the sensor and its surrounding area on

the bumper clean at all times.

366

4-5. Using the driving support systems

The Blind Spot Monitor function uses radar sensors to detect vehicles that are
traveling in an adjacent lane in the area that is not reflected in the outside rear
view mirror (the blind spot), and advises the driver of the vehicles existence via
the outside rear view mirror indicator.

The areas that vehicles can be detected in are outlined below.
The range of the detection area
extends to:

Approximately 11.5 ft. (3.5 m) from
the side of the vehicle

The first 1.6 ft. (0.5 m) from the side of

the vehicle is not in the detection area

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

The Blind Spot Monitor function

The Blind Spot Monitor function detection areas

1

2

3

CAUTION

■

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

observe your surroundings.
The Blind Spot Monitor function is a supplementary function which alerts the driver

that a vehicle is present in the blind spot. Do not overly rely on the Blind Spot Monitor

function. The function cannot judge if it is safe to change lanes, therefore over reliance

could cause an accident resulting in death or serious injury.
According to conditions, the system may not function correctly. Therefore the driver’s

own visual confirmation of safety is necessary.

367

4-5. Using the driving support systems

4

Dr

iving

■

The Blind Spot Monitor function is operational when

●

The Blind Spot Monitor system turned on.

●

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

■

The Blind Spot Monitor function will detect a vehicle when

●

A vehicle in an adjacent lane overtakes your vehicle.

●

Another vehicle enters the detection area when it changes lanes.

■

Conditions under which the Blind Spot Monitor function will not detect a vehicle
The Blind Spot Monitor 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 driving 2 lanes across from your vehicle

*

*

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

368

4-5. Using the driving support systems

■

Conditions under which the Blind Spot Monitor function may not function correctly

●

The Blind Spot Monitor function may not detect vehicles correctly in the following con-

ditions:
• During bad weather such as heavy rain, fog, snow etc.

• When ice or mud etc. is attached to the rear bumper

• When driving on a road surface that is wet due to rain, standing water etc.

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

that enters the detection area

• When a vehicle is in the detection area from a stop and remains in the detection

area as your vehicle accelerates

• When driving up or down consecutive steep inclines, such as hills, a dip in the road

etc.

• When multiple vehicles approach with only a small gap between each vehicle

• When vehicle lanes are wide, and the vehicle in the next lane is too far away from

your vehicle

• When the vehicle that enters the detection area is traveling at about the same speed

as your vehicle

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

that enters the detection area

• Directly after the Blind Spot Monitor system turned on

• When your vehicle is towing a trailer

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

●

Instances of the Blind Spot Monitor function unnecessarily detecting a vehicle and/or

object may increase under the following conditions:
• When there is only a short distance between your vehicle and a guardrail, wall etc.

• When there is only a short distance between your vehicle and a following vehicle

• When vehicle lanes are narrow and a vehicle driving 2 lanes across from your vehi-

cle enters the detection area

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

369

4-5. Using the driving support systems

4

Dr

iving

The Rear Cross Traffic Alert functions when your vehicle is in reverse. It can
detect other vehicles approaching from the right or left rear of the vehicle. It uses
radar sensors to alert the driver of the other vehicle’s existence through flashing
the outside rear view mirror indicators and sounding a buzzer.

The Rear Cross Traffic Alert function

Approaching vehicles

Detection areas

CAUTION

■

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

observe your surroundings.
The Rear Cross Traffic Alert function is only an assist and is not a replacement for care-

ful driving. Driver must be careful when backing up, even when using the Rear Cross

Traffic Alert function. The driver’s own visual confirmation of behind you and your vehi-

cle is necessary and be sure there are no pedestrians, other vehicles etc. before back-

ing up. Failure to do so could cause death or serious injury.
According to conditions, the system may not function correctly. Therefore the driver’s

own visual confirmation of safety is necessary.

1

2

370

4-5. Using the driving support systems

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

To give the driver a more consistent time to react, the buzzer can alert for faster
vehicles from farther away.
Example:

■

The Rear Cross Traffic Alert function is operational when

●

The Blind Spot Monitor system turned on.

●

The shift lever is in R.

●

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

●

Approaching vehicle speed is between approximately 5 mph (8 km/h) and 18 mph (28

km/h).

The Rear Cross Traffic Alert 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)

1

371

4-5. Using the driving support systems

4

Dr

iving

■

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.

●

Small motorcycles, bicycles, pedestrians etc.

*

●

Vehicles approaching from directly behind

●

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

*

●

Vehicles moving away from your vehicle

●

Vehicles approaching from the parking spaces next to your vehicle

*

●

Vehicles backing up in the parking space next to your vehicle

*

*

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

■

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

conditions:

●

During bad weather such as heavy rain, fog, snow etc.

●

When ice or mud etc. is attached to the rear bumper

●

When multiple vehicles approach continuously

●

Shallow angle parking

●

When a vehicle is approaching at high speed

●

When parking on a steep incline, such as hills, a dip in the road etc.

●

Directly after the Blind Spot Monitor system turned on

●

When your vehicle is towing a trailer

●

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

●

Directly after the engine is started with the BSM main switch on

●

When the sensors cannot detect vehicles

because of obstacles

372

4-5. Using the driving support systems

PCS (Pre-Collision system)



◆

Pre-collision seat belts (front seat belts only)

If the system detects that a collision is unavoidable, the system will retract the
seat belt before the collision occurs.
The same will happen if the driver makes an emergency braking or loses con-
trol of the vehicle. (

P. 31)

However, when the VSC system is disabled, the system will not operate in the
event of skidding.

◆

Pre-collision brake assist

When there is a high possibility of a frontal collision, the system applies
greater braking force in relation to how strongly the brake pedal is depressed.

◆

Pre-collision braking

When there is a high possibility of a frontal collision, the system warns the
driver using a warning light, warning display and buzzer. If the system deter-
mines that a collision is unavoidable, the brakes are automatically applied to
reduce the collision speed. Pre-collision braking can be disabled using the
pre-collision braking off switch.

◆

AVS (Adaptive Variable Suspension System) control (if equipped)

When the system determines that there is a high possibility of a frontal colli-
sion, the AVS optimizes the damping effect (

P. 345)



: If equipped

When the radar sensor detects possibility of a frontal collision, the pre-colli-
sion system such as the brakes and seat belts are automatically engaged to
lessen impact as well as vehicle damage.

373

4-5. Using the driving support systems

4

Dr

iving

◆

Driver monitor system (if equipped)

When the system determines that there is a possibility of a collision with the
vehicle in front, and the driver is not facing forward, PCS warnings are given in
advance to warn the driver. If the driver continues to not be facing forward,
and a high possibility of a collision with the vehicle in front is detected, PCS
informs the driver of high possibility of a collision with the vehicle in front by
performing slight braking to provide a physical warning (pre-collision alert
braking).

Pre-collision braking disabled
Pre-collision braking enabled

The “PCS” warning light turns on when

pre-collision braking is disabled.

Disabling pre-collision braking

1

2

374

4-5. Using the driving support systems

The radar sensor detects vehicles or
other obstacles on or near the road
ahead and determines whether a colli-
sion is imminent based on the position,
speed, and heading of the obstacles.

The driver monitor sensor detects the
direction the driver is facing. The sys-
tem determines whether the driver is
facing forward.

Radar sensor

Driver monitor sensor (if equipped)

375

4-5. Using the driving support systems

4

Dr

iving

■

The pre-collision system is operational when

●

Pre-collision seat belts (situation 1):
• Vehicle speed is greater than about 4 mph (5 km/h).

• The speed at which your vehicle is approaching the obstacle or the vehicle running

ahead of you is greater than about 19 mph (30 km/h).

• The front occupants are wearing a seat belt.

●

Pre-collision seat belts (situation 2):
• Vehicle speed is greater than about 19 mph (30 km/h).

• The system detects sudden braking or skidding.

• The front occupants are wearing a seat belt.

●

Pre-collision brake assist:
• Vehicle speed is greater than about 19 mph (30 km/h).

• The speed at which your vehicle is approaching the obstacle or the vehicle running

ahead of you is greater than about 19 mph (30 km/h).

• The brake pedal is depressed.

●

Pre-collision braking:
• The pre-collision braking off switch is not pressed.

• Vehicle speed is greater than about 10 mph (15 km/h).

• The speed at which your vehicle is approaching the obstacle or the vehicle running

ahead of you is greater than about 10 mph (15 km/h).

●

AVS (Adaptive Variable Suspension System) control (if equipped):
• Vehicle speed is greater than about 4 mph (5 km/h).

• The speed at which your vehicle is approaching the obstacle or the vehicle running

ahead of you is greater than about 19 mph (30 km/h).

●

Pre-collision alert braking (vehicles with driver monitor system):
• The system determines that the driver is not facing forward.

• The speed at which your vehicle is approaching the vehicle running ahead of you is

greater than about 25 mph (40 km/h).

• Vehicle speed is greater than about 25 mph (40 km/h).

• The pre-collision braking off switch is not pressed.

• The steering is not being turned.

■

Situations in which the pre-collision system does not function properly
The system may not function effectively in situations such as the following:

●

On roads with sharp bends or uneven surfaces

●

If a vehicle suddenly moves in front of your vehicle, such as at an intersection

●

If a vehicle suddenly cuts in front of your vehicle, such as when overtaking

●

In inclement weather such as heavy rain, fog, snow or sand storms

●

When your vehicle is skidding with the VSC system off

●

When an extreme change in vehicle height occurs

●

When the axis of the radar is out of adjustment