LEXUS ES 350 (2019 year). Instruction - part 12


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LEXUS ES 350 (2019 year). Instruction - part 12




4-5. Using the driving support systems

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.
• LTA 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 [yel-

low] line or course


 is recognized on 

only one side, the system will operate 

only for the recognized side.)

• Width of traffic lane is approximately 9.8 

ft. (3 m) or more.

• Turn signal lever is not operated. (Vehi-

cles with Blind Spot Monitor: Except 

when another vehicle is in the lane on the 

side where the turn signal was operated)

• Vehicle is not being driven around a 

sharp curve.

• No system malfunctions are detected. 




: The function operates even if the vehicle 

speed is less than approximately 32 mph 
(50 km/h) when the lane centering 
function is operating.


: 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”. 



• 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 


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


• TRAC or VSC is not turned off.

• Hands off steering wheel warning is not 

displayed. (


Vehicle sway warning function

This function operates when all of the fol-
lowing conditions are met.
• Setting for “Warning” in 

 of the multi-

information display is set to “On”. 



• Vehicle speed is approximately 32 mph 

(50 km/h) or more.

• Width of traffic lane is approximately 9.8 


4-5. Using the driving support systems





ft. (3 m) or more.

• No system malfunctions are detected. 



Lane centering function

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

• Setting for “Steering Assist” and “Lane 

Center” in 

 of the multi-information 

display are set to “On”. (


• This function recognizes white (yellow) 

lane lines or the position of a preceding 

vehicle (except when the preceding vehi-

cle is small, such as a motorcycle).

• The dynamic radar cruise control with 

full-speed range is operating in vehicle-

to-vehicle distance control mode.

• Width of traffic lane is approximately 10 

to 13 ft. (3 to 4 m).

• Turn signal lever is not operated.

• Vehicle is not being driven around a 

sharp curve.

• No system malfunctions are detected. 



• Vehicle does not accelerate or deceler-

ate by a fixed amount or more.

• Steering wheel is not operated with a 

steering force level suitable for changing 


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


• TRAC or VSC is not turned off.

• Hands off steering wheel warning is not 

displayed. (


• The vehicle is being driven in the center 

of a lane.

• Steering assist function is not operating.

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. (


If the operation conditions (

P.182) are no 

longer met while the lane centering func-

tion is operating, the steering wheel may 

vibrate and the buzzer may sound to indi-

cate that the function has been temporarily 

canceled. However, if the “Steering wheel 

vibration” customization setting is set to 

“On”, the system will notify the driver by 

vibrating the steering wheel instead of 

sounding the buzzer.

Steering assist function/lane centering 


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 


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.

Vehicles with Blind Spot Monitor: It may 

not be possible for the system to deter-

mine if there is a danger of a collision with 

a vehicle in an adjacent lane.

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 warn-



4-5. Using the driving support systems

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, 
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 “Steering wheel vibration”.

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 

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 operat-


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 “Steering wheel vibration”.

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 LTA 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.

“LTA Malfunction Visit Your Dealer”

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

“LTA Unavailable”

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

“LTA Unavailable at Current Speed”

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


Function settings can be changed.
(Customizable features:



4-5. Using the driving support systems






: If  equipped

When the front camera recognizes a 
sign, the sign will be displayed on the 
multi-information display.
 When the driving support system 

information is selected, a maximum 
of 3 signs can be displayed. (


 When a tab other than the driving 

support system information is 
selected, only a recognized speed 
limit sign or do not enter sign (when 
notification is necessary) will be dis-
played. (


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

The following types of road signs are 

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

 : Speed limit

RSA (Road Sign Assist)


The RSA system recognizes spe-
cific road signs using the front cam-
era to provide information to the 
driver via the display.

If the system judges that the vehicle 
is being driven over the speed limit, 
performing prohibited actions, etc. 
in relation to the recognized road 
signs, it alerts the driver using a 
warning display and warning 
buzzer or steering wheel vibration.


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


4-5. Using the driving support systems

 : Do Not Enter

 : Stop

 : Yield

In the following situations, the RSA sys-
tem will alert the driver.
 When the vehicle speed exceeds 

the speed warning 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, traffic 
environment (traffic direction, speed, 
unit) may be detected incorrectly and a 
warning display may not operate prop-

Setting procedure




 of the meter control 

switches and select 




 of the meter control 

switches and select “Vehicle Settings”, 

then press “OK”




 of the meter control 

switches and select 

, then press 





 of the meter control 

switches and select “RSA”, then press 


Automatic turn-off of RSA sign display

In the following situations, a displayed 

speed limit sign will stop being displayed 


A new sign is not recognized for a certain 


In the following situations, do not enter, stop 

and yield signs will stop being displayed 


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.

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.

The driving scene (turning, lane change, 

etc.) is judged incorrectly.

Even if it is a sign not appropriate for the 

currently traveled lane, such a sign exists 

directly after a freeway branches, or in an 

adjacent lane just before merging.

Stickers are attached to the rear of the 

preceding vehicle.

A sign resembling a system compatible 

Warning display


4-5. Using the driving support systems





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 


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.


Some functions can be customized. (Cus-

tomizable features: 


Meter display

Multi-information display

Set speed


Dynamic radar cruise con-
trol with full-speed range

In vehicle-to-vehicle distance con-
trol mode, the vehicle automati-
cally accelerates, decelerates and 
stops to match the speed changes 
of the preceding vehicle even if the 
accelerator pedal is not depressed. 
In constant speed control mode, 
the vehicle runs at a fixed speed.
Use the dynamic radar cruise con-
trol with full-speed range on free-
ways and highways.
 Vehicle-to-vehicle distance con-

trol mode (


 Constant speed control mode 



System Components



4-5. Using the driving support systems

Operation switches

Vehicle-to-vehicle distance switch

+RES switch

Cruise control main switch

Cancel switch

-SET switch


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-


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 care-

fully. Do not overly rely on this system 

and always drive carefully.

• When the sensor may not be correctly 

detecting the vehicle ahead 


• Conditions under which the vehicle-

to-vehicle distance control mode may 

not function correctly 


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.

Switch the dynamic radar cruise con-

trol with full-speed range setting to off, 

using the cruise control main switch 

when not in use.

Cautions regarding the driving assist 


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 fol-

lowing distance between the driver’s 

own vehicle and a designated vehicle 

traveling ahead. It is not a mechanism 

that allows careless or inattentive driv-

ing, and it is not a system that can assist 

the driver in low-visibility conditions. 

It is still necessary for driver to pay 

close attention to the vehicle’s sur-


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 vigilant and to determine 

whether or not there is a possibility of 

danger in any given situation.


4-5. Using the driving support systems






Assisting the driver to operate the 


The dynamic radar cruise control with 

full-speed range does not include 

functions which will prevent or avoid 

collisions with vehicles ahead of your 

vehicle. Therefore, if there is ever any 

possibility of danger, the driver must 

take immediate and direct control of 

the vehicle and act appropriately in 

order to ensure the safety of all 


Situations unsuitable for dynamic 

radar cruise control with full-speed 


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-


In traffic conditions that require fre-

quent repeated acceleration and 


During emergency towing

When an approach warning buzzer is 

heard often


4-5. Using the driving support systems

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, pressing the +RES switch or depressing the 
accelerator pedal (start-off operation) will resume follow-up cruising. If the start-off opera-
tion is not performed, system control continues to keep your vehicle stopped.
When the turn signal lever is operated and your vehicle moves to a left lane while driving at 
50 mph (80 km/h) or more, the vehicle will quickly accelerate to help to overtake a pass-
ing vehicle.

Example of acceleration

Driving in vehicle-to-vehicle distance control mode





4-5. Using the driving support systems





When there are no longer any preceding vehicles driving slower than the set 

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


Press the cruise control main switch 
to activate the cruise control.

Radar cruise control indicator will come on 

and a message will be displayed on the 

multi-information display. Press the switch 

again to deactivate the cruise control.
If the cruise control main switch is pressed 

and held for 1.5 seconds or more, the sys-

tem turns on in constant speed control 

mode. (



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

Cruise control “SET” indicator will come 

The vehicle speed at the moment the 

switch is released becomes the set speed.

To change the set speed, press the 
+RES or -SET switch until the desired 
set speed is displayed.


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: Press the switch.
Large adjustment: Press and hold the 
switch to change the speed, and 
release when the desired speed is 
In the vehicle-to-vehicle distance con-

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

Adjusting the set speed


4-5. Using the driving support systems

trol 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 (0.6mph)


 each time the switch is 

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


 or 1 km/h (0.6 mph)



increments for as long as the switch is held

Except for the U.S. mainland and 

Fine adjustment: By 1 mph (1.6 km/h)


 or 1 

km/h (0.6mph)


 each time the switch is 

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


 or 5 km/h (3.1 mph)



increments for as long as the switch is held

In the constant speed control mode 

P.194), 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 switch is 

Large adjustment: The speed will continue 
to change while the switch 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:







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-


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.

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

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

Distance options




Approximately 160 

ft. (50 m)



4-5. Using the driving support systems





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


Pressing the cancel switch cancels 
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.)


Pressing the +RES switch resumes 
the cruise control and returns vehi-
cle 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 
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.


Approximately 130 

ft. (40 m)


Approximately 100 

ft. (30 m)

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

Distance options



Canceling and resuming the 
speed control

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


4-5. Using the driving support systems

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 


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 cruise control main 
switch for 1.5 seconds or more.

Immediately after the switch is pressed, the 

radar cruise control indicator will come on. 

Afterwards, it switches to the cruise con-

trol indicator.
Switching to constant speed control mode 

is only possible when operating the switch 

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 press the -SET switch to set the 

Cruise control “SET” indicator will come 

The vehicle speed at the moment the 

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


Canceling and resuming the speed setting: 


Dynamic radar cruise control with full-

speed range can be set when

The shift lever is in D or range 4 or higher 

of S has been selected.

Range 4 or higher of D has been selected 

by using the paddle shift switch.

The desired set speed can be set when 

Selecting constant speed con-
trol mode


4-5. Using the driving support systems





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 


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 


Pressing the +RES switch while the vehi-

cle ahead stops will resume follow-up 

cruising if the vehicle ahead starts off 

within approximately 3 seconds after the 

switch is pressed.

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-


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-


• The driver is not wearing a seat belt.

• The driver’s door is opened.

• The vehicle has been stopped for about 3 


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 


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.167, P.358)

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 

when acceleration is required. 

As the sensor may not be able to correctly 

detect these types of vehicles, the approach 

warning (

P.193) may not be activated.

Vehicles that cut in suddenly


4-5. Using the driving support systems

Vehicles traveling at low speeds

Vehicles that are not moving in the same 


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-


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 


While the vehicle speed is decreasing to 

the set speed after the vehicle acceler-

ates by depressing the accelerator pedal


4-5. Using the driving support systems






: If  equipped

Meter control switches

Turn the Blind Spot Monitor on/off.

Outside rear view mirror indicators

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 
indicator on the detected side will illumi-
nate. If the turn signal lever is operated 
toward the detected side, the outside rear 
view mirror indicator will flash.

BSM indicator

When the Blind Spot Monitor is turned on, 
the indicator comes on.




 of the meter con-

trol switches, select 





 of the meter con-

trol switches, select “BSM”, and 
then press “OK”.

Outside rear view mirror indicator visi-


In strong sunlight, the outside rear view mir-

ror indicator may be difficult to see.

When “Blind Spot Monitor Unavailable” 

is shown on the multi-information dis-


Ice, snow, mud, etc., may be attached to the 

rear bumper around the sensors. (


Remove the ice, snow, mud, etc., attached 

to the rear bumper around the sensors to 

return the function to normal. Additionally, 

the sensors may not operate normally when 

driving in extremely hot or cold environ-



Some functions can be customized. (Cus-

tomizable features: 


BSM (Blind Spot Monitor)


The Blind Spot Monitor is a system 
that uses rear side radar sensors 
installed on the inner side of the 
rear bumper on the left and right 
side to assist the driver in confirm-
ing safety when changing lanes.


Cautions regarding the use of the 


The driver is solely responsible for safe 

driving. Always drive safely, taking care 

to observe your surroundings.
The Blind Spot Monitor is a supplemen-

tary function which alerts the driver that a 

vehicle is in a blind spot of the outside 

rear view mirrors or is approaching rap-

idly from behind into a blind spot. Do not 

overly rely on the Blind Spot Monitor. As 

the function cannot judge if it is safe to 

change lanes, over reliance could lead to 

an accident resulting in death or serious 

As the system may not function correctly 

under certain conditions, the driver’s own 

visual confirmation of safety is necessary.

System components


Turning the Blind Spot Monitor 










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