Lexus NX300 (2021 year). Manual in english - page 13

219

4-5. Using the driving support systems

Driving

LDA indicator

The illumination condition of the indicator
informs the driver of the system operation
status.
Illuminated in white:
LDA system is operating.
Illuminated in green:
Steering wheel assistance of the steering
assist function is operating.
Flashing in orange:
Lane departure alert function is operating.

Operation display of steering
wheel operation support

Displayed when the multi-information dis-
play is switched to the driving assist system
information screen.
Indicates that steering wheel assistance of
the steering assist function is operating.

Lane departure alert function dis-
play

Displayed when the multi-information dis-
play is switched to the driving assist system
information screen.



Inside of displayed lines is white

Indicates that the system is recognizing
white (yellow) lines or a course

. When the

vehicle departs from its lane, the white line
displayed on the side the vehicle departs
from flashes orange.



Inside of displayed lines is black

Indicates that the system is not able to rec-
ognize white (yellow) lines or a course

is temporarily canceled.

: Boundary between asphalt and the side

of the road, such as grass, soil, or a curb

■

Operation conditions of each function

●

Lane departure alert function

This function operates when all of the fol-
lowing conditions are met.
• LDA is turned on.

• Vehicle speed is approximately 32 mph

(50 km/h) or more.

• System recognizes white (yellow) lane

lines or a course

. (When a white [yellow]

line or course

is recognized on only one

side, the system will operate only for the

Indications on multi-information
display

220

4-5. Using the driving support systems

recognized side.)

• Width of traffic lane is approximately 9.8

ft. (3 m) or more.

• Turn signal lever is not operated.

• Vehicle is not being driven around a

sharp curve.

• No system malfunctions are detected.

(



P.221)

: Boundary between asphalt and the side

of the road, such as grass, soil, or a curb

●

Steering assist function

This function operates when all of the fol-
lowing conditions are met in addition to the
operation conditions for the lane departure
alert function.

• Setting for “Steering Assist” in

of the

multi-information display is set to “On”.
(



P.80)

• Vehicle is not accelerated or decelerated

by a fixed amount or more.

• Steering wheel is not operated with a

steering force level suitable for changing

lanes.

• ABS, VSC, TRAC and PCS are not oper-

ating.

• TRAC or VSC is not turned off.

• Hands off steering wheel warning is not

displayed. (



P.220)

●

Vehicle sway warning function

This function operates when all of the fol-
lowing conditions are met.

• Setting for “Sway Warning” in

of the

multi-information display is set to “On”.
(



P.80)

• Vehicle speed is approximately 32 mph

(50 km/h) or more.

• Width of traffic lane is approximately 9.8

ft. (3 m) or more.

• No system malfunctions are detected.

(



P.221)

■

Temporary cancelation of functions

When operation conditions are no longer

met, a function may be temporarily can-

celed. However, when the operation condi-

tions are met again, operation of the

function is automatically restored.

(



P.219)

■

Steering assist function

●

Depending on the vehicle speed, lane

departure situation, road conditions, etc.,

the driver may not feel the function is

operating or the function may not oper-

ate at all.

●

The steering control of the function is

overridden by the driver’s steering wheel

operation.

●

Do not attempt to test the operation of

the steering assist function.

■

Lane departure alert function

●

The warning buzzer may be difficult to

hear due to external noise, audio play-

back, etc. Also, it may be difficult to feel

steering wheel vibrations due to the road

conditions, etc.

●

If the edge of the course

is not clear or

straight, the lane departure alert function

may not operate.

●

Do not attempt to test the operation of

the lane departure alert function.

: Boundary between asphalt and the side

of the road, such as grass, soil, or a curb

■

Hands off steering wheel warning

In the following situations, a warning mes-

sage urging the driver to hold the steering

wheel and the symbol shown in the illustra-

tion are displayed on the multi-information

display to warn the driver.The warning stops

when the system determines that the driver

holds the steering wheel. Always keep your

hands on the steering wheel when using this

system, regardless of warnings.

●

When the system determines that the

driver is driving without holding the steer-

ing wheel while the system is operating

If the driver continues to keep their hands
off of the steering wheel, the buzzer sounds,

221

4-5. Using the driving support systems

Driving

the driver is warned and the function is tem-
porarily canceled. This warning also oper-
ates in the same way when the driver
continuously operates the steering wheel
only a small amount.

The buzzer also sounds even if the alert
type is set to

●

When the system determines that the

vehicle may not turn and instead depart

from its lane while driving around a curve

Depending on the vehicle condition and
road conditions, the warning may not oper-
ate. Also, if the system determines that the
vehicle is driving around a curve, warnings
will occur earlier than during straight-lane
driving.

●

When the system determines that the

driver is driving without holding the steer-

ing wheel while the steering wheel assist

of the steering assist function is operating

If the driver continues to keep their hands
off of the steering wheel and the steering
wheel assist is operating, the buzzer sounds
and the driver is warned. Each time the
buzzer sounds, the continuing time of the
buzzer becomes longer.

The buzzer also sounds even if the alert
type is set to

■

Vehicle sway warning function

When the system determines that the vehi-

cle is swaying while the vehicle sway warn-

ing function is operating, a buzzer sounds

and a warning message urging the driver to

rest and the symbol shown in the illustration

are simultaneously displayed on the multi-

information display.

Depending on the vehicle and road condi-

tions, the warning may not operate.

■

Warning message

If the following warning message is dis-

played on the multi-information display and

the LDA indicator illuminates in orange, fol-

low the appropriate troubleshooting proce-

dure. Also, if a different warning message is

displayed, follow the instructions displayed

on the screen.

●

“Lane Departure Alert Malfunction Visit

Your Dealer”

The system may not be operating properly.
Have the vehicle inspected by your Lexus
dealer.

●

“Lane Departure Alert Unavailable”

The system is temporarily canceled due to a
malfunction in a sensor other than the front
camera. Turn the LDA system off, wait for a
little while, and then turn the LDA system
back on.

●

“Lane Departure Alert Unavailable at

Current Speed”

The function cannot be used as the vehicle
speed exceeds the LDA operation range.
Drive slower.

●

“Lane Departure Alert Unavailable

Below Approx 50km/h”

The LDA system cannot be used as the
vehicle speed is less than approximately 32
mph (50 km/h). Drive the vehicle at
approximately 32 mph (50 km/h) or more.

■

Customization

Function settings can be changed. (Cus-

tomizable features:



P.425)

222

4-5. Using the driving support systems

: If equipped

The RSA system recognizes specific
road signs using the front camera to
provide information to the driver via
the display.

If the system judges that the vehicle is
being driven over the speed limit, per-
forming prohibited actions, etc.,
according to the recognized road
signs, it notifies the driver through a
visual notification and notification
buzzer.

When the front camera recognizes a
sign, the sign will be displayed on the

multi-information display.



When the driving assist system
information is selected, a maximum
of 3 signs can be displayed.
(



P.80)



When a tab other than the driving
assist system information is selected,
the following types of road signs will
be displayed.(



P.80)

• Speed limit sign
• Do Not Enter sign (when notification is

necessary)

If signs other than speed limit signs are rec-
ognized, they will be displayed in an over-
lapping stack under the current speed limit
sign.

The following types of road signs,
including electronic signs and blinking
signs, are recognized.

RSA (Road Sign Assist)

Summary of functions

WARNING

■

Before using the RSA

Do not rely solely upon the RSA system.

RSA is a system which supports the

driver by providing information, but it is

not a replacement for a driver’s own

vision and awareness. Drive safely by

always paying careful attention to the

traffic rules.

Indication on the multi-informa-
tion display

Supported types of road signs

223

4-5. Using the driving support systems

Driving

A non-official or a recently introduced traf-
fic sign may not be recognized.

: Speed limit

: Do Not Enter

: Stop

: Yield

In the following situations, the RSA sys-
tem will notify the driver.



When the vehicle speed exceeds
the speed notification threshold of
the speed limit sign displayed, the
sign display will be emphasized and
a buzzer will sound.



When the RSA system recognizes a
do not enter sign and determines
that your vehicle has entered a no-
entry area, the displayed sign will
flash and a buzzer will sound.

Depending on the situation, a notifica-
tion function may not operate properly.

■

Setting procedure

Press

of the meter control

switches and select

Press

of the meter control

switches and select

, then press

Press

of the meter control

switches, select the desired setting, and
then press

■

Automatic turn-off of RSA sign display

In the following situations, a displayed

speed limit sign and/or do not enter signs

will stop being displayed automatically:

●

No sign has been recognized for a cer-

tain distance.

●

The road changes due to a left or right

turn, etc.

In the following situations, stop and yield

signs will stop being displayed automati-

cally:

●

The system determines that your vehicle

has passed the sign.

●

The road changes due to a left or right

turn, etc.

■

Conditions in which the function may

not operate or detect correctly

In the following situations, RSA does not

operate normally and may not recognize

signs, display the incorrect sign, etc. How-

ever, this does not indicate a malfunction.

●

The front camera is misaligned due to a

strong impact being applied to the sen-

sor, etc.

●

Dirt, snow, stickers, etc. are on the wind-

shield near the front camera.

●

In inclement weather such as heavy rain,

fog, snow or sand storms

●

Light from an oncoming vehicle, the sun,

etc. enters the front camera.

●

The sign is dirty, faded, tilted or bent.

●

The contrast of electronic sign is low.

●

All or part of the sign is hidden by the

leaves of a tree, a pole, etc.

●

The sign is only visible to the front camera

for a short amount of time.

Notification function

224

4-5. Using the driving support systems

●

The driving scene (turning, lane change,

etc.) is judged incorrectly.

●

If a sign not appropriate for the currently

traveled lane, but the sign exists directly

after a freeway branches, or in an adja-

cent lane just before merging.

●

Stickers are attached to the rear of the

preceding vehicle.

●

A sign resembling a system compatible

sign is recognized.

●

Side road speed signs may be detected

and displayed (if positioned in sight of the

front camera) while the vehicle is travel-

ing on the main road.

●

Roundabout exit road speed signs may

be detected and displayed (if positioned

in sight of the front camera) while travel-

ing on a roundabout.

●

The front of the vehicle is raised or low-

ered due to the carried load.

●

The surrounding brightness is not suffi-

cient or changes suddenly.

●

When a sign intended for trucks, etc. is

recognized.

●

The speed information displayed on the

meter and on the navigation system may

be different due to the navigation system

using map data.

■

Speed limit sign display

If the engine switch was last turned off while

a speed limit sign was displayed on the

multi-information display, the same sign dis-

plays again when the engine switch is

turned to IGNITION ON mode.

■

If “RSA malfunction Visit Your Dealer” is

shown

The system may be malfunctioning. Have

the vehicle inspected by your Lexus dealer.

■

Customization

Some functions can be customized. (Cus-

tomizable features:



P.425)

In vehicle-to-vehicle distance control
mode, the vehicle automatically accel-
erates, decelerates and stops to match
the speed changes of the preceding
vehicle even if the accelerator pedal is
not depressed. In constant speed con-
trol mode, the vehicle runs at a fixed
speed.
Use the dynamic radar cruise control
with full-speed range on freeways and
highways.



Vehicle-to-vehicle distance control
mode (



P.227)



Constant speed control mode
(



P.231)

Dynamic radar cruise con-
trol with full-speed range

Summary of functions

System Components

225

4-5. Using the driving support systems

Driving

Multi-information display

Set speed

Indicators

Vehicle-to-vehicle distance switch

Cruise control switch

WARNING

■

Before using dynamic radar cruise

control with full-speed range

●

Driving safely is the sole responsibility

of the driver. Do not rely solely on the

system, and drive safely by always pay-

ing careful attention to your surround-

ings.

●

The dynamic radar cruise control with

full-speed range provides driving

assistance to reduce the driver’s bur-

den. However, there are limitations to

the assistance provided.

Read the following conditions carefully.
Do not overly rely on this system and
always drive carefully.
• When the sensor may not be correctly

detecting the vehicle ahead:



P.232

• Conditions under which the vehicle-

to-vehicle distance control mode may

not function correctly:



P.233

●

Set the speed appropriately depend-

ing on the speed limit, traffic flow, road

conditions, weather conditions, etc.

The driver is responsible for checking

the set speed.

●

Even when the system is functioning

normally, the condition of the preced-

ing vehicle as detected by the system

may differ from the condition

observed by the driver. Therefore, the

driver must always remain alert, assess

the danger of each situation and drive

safely. Relying solely on this system or

assuming the system ensures safety

while driving can lead to an accident,

resulting in death or serious injury.

A
B
C
D

●

Switch the dynamic radar cruise con-

trol with full-speed range setting to off

using the “ON/OFF” button when not

in use.

■

Cautions regarding the driving assist

systems

Observe the following precautions, as

there are limitations to the assistance

provided by the system.

Failure to do so may cause an accident

resulting in death or serious injury.

●

Assisting the driver to measure follow-

ing distance

The dynamic radar cruise control with
full-speed range is only intended to help
the driver in determining the following
distance between the driver’s own vehi-
cle and a designated vehicle traveling
ahead. It is not a mechanism that allows
careless or inattentive driving, and it is
not a system that can assist the driver in
low-visibility conditions. It is still neces-
sary for driver to pay close attention to
the vehicle’s surroundings.

●

Assisting the driver to judge proper

following distance

The dynamic radar cruise control with
full-speed range determines whether the
following distance between the driver’s
own vehicle and a designated vehicle
traveling ahead is within a set range. It is
not capable of making any other type of
judgement. Therefore, it is absolutely
necessary for the driver to remain vigi-
lant and to determine whether or not
there is a possibility of danger in any
given situation.

226

4-5. Using the driving support systems

WARNING

●

Assisting the driver to operate the

vehicle

The dynamic radar cruise control with
full-speed range does not include func-
tions which will prevent or avoid colli-
sions with vehicles ahead of your vehicle.
Therefore, if there is ever any possibility
of danger, the driver must take immedi-
ate and direct control of the vehicle and
act appropriately in order to ensure the
safety of all involved.

■

Situations unsuitable for dynamic

radar cruise control with full-speed

range

Do not use dynamic radar cruise control

with full-speed range in any of the follow-

ing situations.

Doing so may result in inappropriate

speed control and could cause an acci-

dent resulting in death or serious injury.

●

Roads where there are pedestrians,

cyclists, etc.

●

In heavy traffic

●

On roads with sharp bends

●

On winding roads

●

On slippery roads, such as those cov-

ered with rain, ice or snow

●

On steep downhills, or where there

are sudden changes between sharp up

and down gradients

Vehicle speed may exceed the set

speed when driving down a steep hill.

●

At entrances to freeways and highways

●

When weather conditions are bad

enough that they may prevent the sen-

sors from detecting correctly (fog,

snow, sandstorm, heavy rain, etc.)

●

When there is rain, snow, etc. on the

front surface of the radar or front cam-

era

●

In traffic conditions that require fre-

quent repeated acceleration and

deceleration

●

When your vehicle is towing a trailer

or during emergency towing

●

When an approach warning buzzer is

heard often

227

4-5. Using the driving support systems

Driving

This mode employs a radar to detect the presence of vehicles up to approximately
328 ft. (100 m) ahead, determines the current vehicle-to-vehicle following dis-
tance, and operates to maintain a suitable following distance from the vehicle
ahead. The desired vehicle-to-vehicle distance can also be set by operating the
vehicle-to-vehicle distance switch.

When driving on downhill slopes, the vehicle-to-vehicle distance may become shorter.

Example of constant speed cruising
When there are no vehicles ahead

The vehicle travels at the speed set by the driver.

Example of deceleration cruising and follow-up cruising
When a preceding vehicle driving slower than the set speed appears

When a vehicle is detected running ahead of you, the system automatically decelerates
your vehicle. When a greater reduction in vehicle speed is necessary, the system applies
the brakes (the stop lights will come on at this time). The system will respond to changes in
the speed of the vehicle ahead in order to maintain the vehicle-to-vehicle distance set by
the driver. Approach warning warns you when the system cannot decelerate sufficiently to
prevent your vehicle from closing in on the vehicle ahead.
When the vehicle ahead of you stops, your vehicle will also stop (vehicle is stopped by sys-
tem control). After the vehicle ahead starts off, pushing the cruise control lever up or
depressing the accelerator pedal (start-off operation) will resume follow-up cruising. If the
start-off operation is not performed, system control continues to keep your vehicle
stopped.
When the turn signal lever is operated and your vehicle moves to an overtaking lane while
driving at 50 mph (80 km/h) or more, the vehicle will accelerate to help to overtake a
passing vehicle.

Driving in vehicle-to-vehicle distance control mode

228

4-5. Using the driving support systems

The system’s identification of what is an overtaking lane may be determined solely based on
the location of the steering wheel in the vehicle (left side driver position versus right side
driver position.) If the vehicle is driven to a region where the overtaking lane is on a different
side from where the vehicle is normally driven, the vehicle may accelerate when the turn
signal lever is operated in the opposite direction to the overtaking lane (e.g., if the driver
normally operates the vehicle in a region where the overtaking lane is to the right but then
drives to a region where the overtaking lane is to the left, the vehicle may accelerate when
the right turn signal is activated).

Example of acceleration
When there are no longer any preceding vehicles driving slower than the set
speed

The system accelerates until the set speed is reached. The system then returns to constant
speed cruising.

Press the “ON/OFF” button to
activate the cruise control.

Dynamic radar cruise control indicator will

come on and a message will be displayed

on the multi-information display.
Press the button again to deactivate the

cruise control.
If the “ON/OFF” button is pressed and

held for 1.5 seconds or more, the system

turns on in constant speed control mode.

(



P.231)

Accelerate or decelerate, with
accelerator pedal operation, to the
desired vehicle speed (at or above
approximately 20 mph [30 km/h])

and push the lever down to set the
speed.

Cruise control “SET” indicator will come

on.
The vehicle speed at the moment the lever

is released becomes the set speed.

To change the set speed, operate the
lever until the desired set speed is dis-
played.

Setting the vehicle speed (vehi-
cle-to-vehicle distance control
mode)

Adjusting the set speed

229

4-5. Using the driving support systems

Driving

Increases the speed

(Except when the vehicle has been
stopped by system control in vehicle-to-
vehicle distance control mode)

Decreases the speed

Fine adjustment: Momentarily move the
lever in the desired direction.
Large adjustment: Hold the lever up or
down to change the speed, and release
when the desired speed is reached.
In the vehicle-to-vehicle distance control
mode, the set speed will be increased or
decreased as follows:



For the U.S. mainland and Hawaii

Fine adjustment: By 1 mph (1.6 km/h)

or 1

km/h (0.6 mph)

each time the lever is

operated
Large adjustment: Increases or decreases
in 1 mph (1.6 km/h)

or 1 km/h (0.6 mph)

increments for as long as the lever is held



For Canada, Guam and Puerto Rico

Fine adjustment: By 1 mph (1.6 km/h)

or 1

km/h (0.6 mph)

each time the lever is

operated
Large adjustment: Increases or decreases
in 5 mph (8 km/h)

or 5 km/h (3.1 mph)

increments for as long as the lever is held
In the constant speed control mode
(



P.231), the set speed will be increased

or decreased as follows:

Fine adjustment: By 1 mph (1.6 km/h)

or 1

km/h (0.6 mph)

each time the lever is

operated
Large adjustment: The speed will continue
to change while the lever is held.

: When the set speed is shown in “MPH”

: When the set speed is shown in “km/h”

Pressing the switch changes the vehi-
cle-to-vehicle distance as follows:

Long

Medium

Short

The vehicle-to-vehicle distance is set auto-
matically to long mode when the engine
switch is turned to IGNITION ON mode.
If a vehicle is running ahead of you, the pre-
ceding vehicle mark

will also be dis-

played.

Changing the vehicle-to-vehicle
distance (vehicle-to-vehicle dis-
tance control mode)

230

4-5. Using the driving support systems

Select a distance from the table below.
Note that the distances shown corre-
spond to a vehicle speed of 50 mph
(80 km/h). Vehicle-to-vehicle distance
increases/decreases in accordance
with vehicle speed. When the vehicle is
stopped by system control, the vehicle
stops at a certain vehicle-to-vehicle
distance depending on the situation.

After the vehicle ahead of you starts
off, push the lever up.
Your vehicle will also resume follow-up
cruising if the accelerator pedal is
depressed after the vehicle ahead of
you starts off.

Pulling the lever toward you can-
cels the speed control.

The speed control is also canceled when
the brake pedal is depressed.
(When the vehicle has been stopped by
system control, depressing the brake pedal
does not cancel the setting.)

Pushing the lever up resumes the
cruise control and returns vehicle
speed to the set speed.

When your vehicle is too close to a
vehicle ahead, and sufficient automatic
deceleration via the cruise control is
not possible, the display will flash and
the buzzer will sound to alert the driver.
An example of this would be if another

Vehicle-to-vehicle distance set-
tings (vehicle-to-vehicle dis-
tance control mode)

Distance options

Vehicle-to-vehicle

distance

Long

Approximately 160

ft. (50 m)

Medium

Approximately 130

ft. (40 m)

Short

Approximately 100

ft. (30 m)

Resuming follow-up cruising
when the vehicle has been
stopped by system control (vehi-
cle-to-vehicle distance control
mode)

Canceling and resuming the
speed control

Approach warning (vehicle-to-
vehicle distance control mode)

231

4-5. Using the driving support systems

Driving

driver cuts in front of you while you are
following a vehicle. Depress the brake
pedal to ensure an appropriate vehi-
cle-to-vehicle distance.

■

Warnings may not occur when

In the following instances, warnings
may not occur even when the vehicle-
to-vehicle distance is small.



When the speed of the preceding
vehicle matches or exceeds your
vehicle speed



When the preceding vehicle is trav-
eling at an extremely slow speed



Immediately after the cruise control
speed was set



When depressing the accelerator
pedal

When constant speed control mode is
selected, your vehicle will maintain a
set speed without controlling the vehi-
cle-to-vehicle distance. Select this
mode only when vehicle-to-vehicle dis-
tance control mode does not function
correctly due to a dirty radar, etc.

With the cruise control off, press
and hold the “ON/OFF” button for
1.5 seconds or more.

Immediately after the “ON/OFF” button is

pressed, the dynamic radar cruise control

indicator will come on. Afterwards, it

switches to the cruise control indicator.
Switching to constant speed control mode

is only possible when operating the lever

with the cruise control off.

Accelerate or decelerate, with
accelerator pedal operation, to the
desired vehicle speed (at or above
approximately 20 mph [30 km/h])
and push the lever down to set the
speed.

Cruise control “SET” indicator will come

on.
The vehicle speed at the moment the lever

is released becomes the set speed.
Adjusting the speed setting:



P.228

Canceling and resuming the speed setting:



P.230

Selecting constant speed con-
trol mode

232

4-5. Using the driving support systems

■

Dynamic radar cruise control with full-

speed range can be set when

●

The shift lever is in D.

●

The desired set speed can be set when

the vehicle speed is approximately 20

mph (30 km/h) or more. (However, when

the vehicle speed is set while driving at

below approximately 20 mph [30 km/h],

the set speed will be set to approximately

20 mph [30 km/h].)

■

Accelerating after setting the vehicle

speed

The vehicle can accelerate by operating the

accelerator pedal. After accelerating, the

set speed resumes. However, during vehi-

cle-to-vehicle distance control mode, the

vehicle speed may decrease below the set

speed in order to maintain the distance to

the preceding vehicle.

■

When the vehicle stops while follow-up

cruising

●

Pushing the lever up while the vehicle

ahead stops will resume follow-up cruis-

ing if the vehicle ahead starts off within

approximately 3 seconds after the lever

is pushed up.

●

If the vehicle ahead starts off within 3 sec-

onds after your vehicle stops, follow-up

cruising will be resumed.

■

Automatic cancelation of vehicle-to-

vehicle distance control mode

Vehicle-to-vehicle distance control mode is

automatically canceled in the following situ-

ations.

●

VSC is activated.

●

TRAC is activated for a period of time.

●

When the VSC or TRAC system is

turned off.

●

The sensor cannot detect correctly

because it is covered in some way.

●

Pre-collision braking is activated.

●

The parking brake is operated.

●

The vehicle is stopped by system control

on a steep incline.

●

The following are detected when the

vehicle has been stopped by system con-

trol:

• The driver is not wearing a seat belt.

• The driver’s door is opened.

• The vehicle has been stopped for about 3

minutes

If vehicle-to-vehicle distance control mode

is automatically canceled for any reasons

other than the above, there may be a mal-

function in the system. Contact your Lexus

dealer.

■

Automatic cancelation of constant

speed control mode

Constant speed control mode is automati-

cally canceled in the following situations:

●

Actual vehicle speed is more than

approximately 10 mph (16 km/h) below

the set vehicle speed.

●

Actual vehicle speed falls below approxi-

mately 20 mph (30 km/h).

●

VSC is activated.

●

TRAC is activated for a period of time.

●

When the VSC or TRAC system is

turned off.

●

Pre-collision braking is activated.

If constant speed control mode is automati-

cally canceled for any reasons other than

the above, there may be a malfunction in the

system. Contact your Lexus dealer.

■

Brake operation

A brake operation sound may be heard and

the brake pedal response may change, but

these are not malfunctions.

■

Warning messages and buzzers for

dynamic radar cruise control with full-

speed range

Warning messages and buzzers are used to

indicate a system malfunction or to inform

the driver of the need for caution while driv-

ing. If a warning message is shown on the

multi-information display, read the message

and follow the instructions. (



P.196, 382)

■

When the sensor may not be correctly

detecting the vehicle ahead

In the case of the following and depending

on the conditions, operate the brake pedal

when deceleration of the system is insuffi-

cient or operate the accelerator pedal

233

4-5. Using the driving support systems

Driving

when acceleration is required.

As the sensor may not be able to correctly

detect these types of vehicles, the approach

warning (



P.230) may not be activated.

●

Vehicles that cut in suddenly

●

Vehicles traveling at low speeds

●

Vehicles that are not moving in the same

lane

●

Vehicles with small rear ends (trailers

with no load on board, etc.)

●

Motorcycles traveling in the same lane

●

When water or snow thrown up by the

surrounding vehicles hinders the detect-

ing of the sensor

●

When your vehicle is pointing upwards

(caused by a heavy load in the luggage

compartment, etc.)

●

Preceding vehicle has an extremely high

ground clearance

■

Conditions under which the vehicle-to-

vehicle distance control mode may not

function correctly

In the case of the following conditions,

operate the brake pedal (or accelerator

pedal, depending on the situation) as nec-

essary.

As the sensor may not be able to correctly

detect vehicles ahead, the system may not

operate properly.

●

When the road curves or when the lanes

are narrow

●

When steering wheel operation or your

position in the lane is unstable

●

When the vehicle ahead of you deceler-

ates suddenly

●

When driving on a road surrounded by a

structure, such as in a tunnel or on a

bridge

●

While the vehicle speed is decreasing to

the set speed after the vehicle acceler-

ates by depressing the accelerator pedal

234

4-5. Using the driving support systems

: If equipped

■

Intuitive parking assist (if
equipped)

Ultrasonic sensors are used to detect
static objects in the detection area
when driving at a low speed or backing
up. (



P.235)

■

Adjusting the buzzer volume

The buzzer volume can be adjusted on
the multi-information display.
Use the meter control switches to
change settings. (



P.80)

Press

to select

Press

to select “PKSA”

and then press

Press

to select

and

then press

Each time the switch is pressed, the volume

level change between 1, 2, and 3.

■

Muting buzzer



P.236

PKSA (Parking Support
Alert)

The Parking Support Alert system
consists of the following functions
that operate when driving at a low
speed or backing up, such as when
parking. When the system deter-
mines that a collision with a
detected object, such as a wall is
high, a warning operates to urge
the driver to take evasive action.

PKSA (Parking Support Alert)
system

Setting the buzzer volume

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