2019 Lexus ES350 display

1824-5. 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 it s 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
* or
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.
*1
•System recognizes wh ite (yellow) lane lines or a course
*2. (When a white [yel-
low] line or course*2 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.
( P.184)
*1: The function operates even if the vehicle
speed is less than ap proximately 32 mph
(50 km/h) when the lane centering
function is operating.
*2: 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.72)
• Vehicle is not acceler ated or decelerated
by a fixed amount or more.
• Steering wheel is not operated with a steering force level su itable 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.183)
●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”.
( P.72)
• Vehicle speed is approximately 32 mph (50 km/h) or more.
• Width of traffic lane is approximately 9.8

1834-5. Using the driving support systems
4
Driving
ft. (3 m) or more.
• No system malfunctions are detected. ( P.184)
●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 th e multi-information
display are set to “On”. ( P.72)
• 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. ( P.184)
• Vehicle does not acc elerate or deceler-
ate by a fixed amount or more.
• Steering wheel is not operated with a
steering force level su itable 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.183)
• 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. ( P.182)
If the operation conditions ( P.182) are no
longer met while the lane centering func-
tion is operating, th e 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
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.
●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 sh own 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-
ings.

1844-5. 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 continue s 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
driving.
●When the system determines that the
driver is driving without holding the steer-
ing wheel while the st eering wheel assist
of the steering assist function is operat-
ing.
If the driver continue s 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 sh
own in the illustration
are simultaneously di splayed 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-in formation 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
dealer.
●“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.
■Customization
Function settings can be changed.
(Customizable features: P.400)

1854-5. Using the driving support systems
4
Driving
*: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. (
P.71)
 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. ( P.71)
If signs other than speed limit signs are rec-
ognized, they will be displayed in an over-
lapping stack under th e current speed limit
sign.
The following types of road signs are
recognized.
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.
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

1864-5. 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-
erly.
■Setting procedure
1 Press or of the meter control
switches and select
2 Press or of the meter control
switches and select “Vehicle Settings”,
then press “OK”
3 Press or of the meter control
switches and select , then press
“OK” 4
Press or of the meter control
switches and select “RSA”, then press
“OK”
■Automatic turn-off of RSA sign display
In the following situations, a displayed
speed limit sign will stop being displayed
automatically:
●A new sign is not recognized for a certain
distance.
In the following situations, do not enter, stop
and yield signs will stop being displayed
automatically:
●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

1874-5. Using the driving support systems
4
Driving
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.
■Speed limit sign display
If the engine switch wa s last turned off while
a speed limit sign wa s 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.400)
■Meter display
Multi-information display
Set speed
Indicators
Dynamic radar cruise con-
trol with full-speed range
In vehicle-to-vehicle distance con-
trol mode, the ve hicle 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 ( P.190)
 Constant speed control mode
( P.194)
System Components
A
B
C

1914-5. Using the driving support systems
4
Driving
When there are no longer any preceding vehicles driving slower than the set
speed
The system accelera tes until the set speed is reached. The system then returns to constant
speed cruising.
1 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 ma in switch is pressed
and held for 1.5 seconds or more, the sys-
tem turns on in constant speed control
mode. ( P.194)
2 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
on.
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.
1
Increases the speed
(Except when the vehicle has been
stopped by system control in vehicle-to-
vehicle distance control mode)
2Decreases 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
reached.
In the vehicle-to-vehicle distance con-
Setting the vehicle speed (vehi-
cle-to-vehicle distance control
mode)
Adjusting the set speed

1934-5. Using the driving support systems
4
Driving
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.1
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.)
2Pressing 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.
MediumApproximately 130 ft. (40 m)
ShortApproximately 100 ft. (30 m)
Resuming follow-up cruising
when the vehicle has been
stopped by system control (vehi-
cle-to-vehicle distance control
mode)
Distance optionsVehicle-to-vehicle distanceCanceling and resuming the
speed control
Approach warning (vehicle-to-
vehicle distance control mode)