Page 205 of 584

ES350_OM_OM33C68U_(U)
2034-5. Using the driving support systems
4
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 steer-
ing control function is operating.
Flashing in orange:
Lane departure alert function is operat-
ing.
Operation display of steering wheel
operation support
Indicates that steering wheel assistance of the steering control function is
operating.
Lane departure alert function display
Displayed when the multi-information display is switched to the driving assist
system information screen.
Indications on multi-information display
1
2
3
XInside of displayed white lines is
white XInside of displayed white lines is
black
Indicates that the system is recognizing
white (yellow) lines. When the vehicle
departs from its lane, the white line dis-
played on the side the vehicle departs
from flashes orange. Indicates that the system is not able to
recognize white (yellow) lines or is
temporarily canceled.
Page 206 of 584

204
ES350_OM_OM33C68U_(U)4-5. Using the driving support systems
■Operation conditions of each function
●Lane departure alert function
This function operates when all of
the following conditions are met.
• LDA is turned on.
• Vehicle speed is approximately 32 mph (50 km/h) or more.
• System recognizes white (yellow) lines.
• Width of traffic lane is approximately 9.8 ft. (3 m) or more.
• Turn signal lever is not operated.
• Vehicle is driven on a straight road or around a gentle curve with a radius of more
than approximately 492 ft. (150 m).
• No system malfunctions are detected. ( →P. 2 0 6 )
●Steering control function
This function operates when all of the follo wing conditions are met in addition to the
operation conditions for the lane departure alert function.
• Setting for “Steering Assist” in (Se ttings display) of the multi-information
display is set to “On”. ( →P. 8 0 )
• 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 operating.
• TRAC or VSC is not turned off.
• Hands off steering wheel alert is not displayed. ( →P. 2 0 4 )
●Vehicle sway warning
This function operates when all of the following conditions are met.
• Setting for “Sway Warning” in (Settings display) of the multi-information dis- play is set to “On”. (→ P. 8 0 )
• 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. 2 0 6 )
■Temporary cancellation of functions
When operation conditions are no longer met, a function may be temporarily canceled.
However, when the operation conditions are met again, operation of the function is auto-
matically restored. ( →P. 2 0 4 )
■Steering control function
Depending on the vehicle speed, lane departure situation, road conditions, etc., the
operation of the functions may not be recognized or the functions may not operate.
■Lane departure alert function
The warning buzzer may be difficult to hear due to external noise, audio playback, etc.
Also, it may be difficult to feel steering whee l vibrations due to the road conditions, etc.
■Hands off steering wheel alert
When the system determines that the driver has removed the hands from the steering
wheel while the steering control function is operating, a warning message is displayed on
the multi-information display and the buzzer sounds.
■White (yellow) lines are only on one side of road
The LDA system will not operate for the side on which white (yellow) lines could not be
recognized.
Page 208 of 584

206
ES350_OM_OM33C68U_(U)4-5. Using the driving support systems
■Wa r n i n g m e s s a g e
If the following warning message is displaye
d on the multi-information display and the
LDA indicator illuminates in orange, follow the appropriate troubleshooting procedure.
If a different warning message is displayed, follow the instructions displayed on the
screen.
Warning messageDetails/Actions
“Lane Departure Alert
Malfunction
Visit Your Dealer ”The system may not be operating properly.
→ Have the vehicle inspected at your Lexus
dealer.
“Forward Camera
System
Unavailable
Clean Windshield”
Dirt, rain, condensation, ice, snow, etc. are
present on the windshield in front of the cam-
era sensor.
→ Turn the LDA system off, remove any dirt,
rain, condensation, ice, snow, etc. from the
windshield, and then turn the LDA system
back on.
“Forward Camera
System
Unavailable”
The operation conditions of the camera sen-
sor (temperature, etc.) are not met.
→ When the operation conditions of the cam-
era sensor (temperature, etc.) are met, the
LDA system will become available. Turn
the LDA system off, wait for a little while,
and then turn the LDA system back on.
“Lane Departure Alert Unavailable”
The LDA system is temporarily canceled due
to a malfunction in a sensor other than the
camera sensor.
→Turn the LDA system off and follow the
appropriate troubleshooting procedures
for the warning messages. Afterward,
drive the vehicle for a short time, and then
turn the LDA system back on.
“Lane Departure
Alert
Unavailable
Below Approx
32 MPH”The LDA system cannot be used as the vehicle
speed is less than approximately 32 mph (50
km/h) or less.
→ Drive the vehicle at approximately 32 mph
(50 km/h) or more.
Page 210 of 584
208
ES350_OM_OM33C68U_(U)4-5. Using the driving support systems
Dynamic radar cruise control∗
In vehicle-to-vehicle distance control mode, the vehicle automatically acceler-
ates and decelerates to match the speed changes of the preceding vehicle even
if the accelerator pedal is not depresse
d. In constant speed control mode, the
vehicle runs at a fixed speed.
Use the dynamic radar cruise control on freeways and highways.
●Vehicle-to-vehicle distance control mode ( →P. 211)
●Constant speed control mode ( →P. 2 1 6 )
Display
Set speed
Indicators
Vehicle-to-vehicle distance but-
ton
Cruise control switch
∗: If equipped
Summary of functions
1
2
3
4
5
Page 214 of 584
212
ES350_OM_OM33C68U_(U)4-5. Using the driving support systems
Press the “ON/OFF” button to acti-
vate the cruise control.
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. 2 1 6 )
Accelerate or decelerate, with
accelerator pedal operation, to the
desired vehicle speed (above
approximately 30 mph [50 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.
Setting the vehicle speed (vehicle -to-vehicle distance control mode)
1
2
Page 216 of 584
214
ES350_OM_OM33C68U_(U)4-5. Using the driving support systems
Pressing the button changes the vehi-
cle-to-vehicle distance as follows:
Long
Medium
Short
The vehicle-to-vehicle distance is set
automatically to long mode when the
engine switch is turned to IGNITION
ON mode.
If a vehicle is running ahead of you, the preceding vehicle mark will also be displayed.
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.
Changing the vehicle-to-vehicle di stance (vehicle-to-vehicle distance
control mode)
Preceding
vehicle mark
1
2
3
Vehicle-to-vehicle distance setting s (vehicle-to-vehicle distance con-
trol mode)
Distance optionsVehicle-to-vehicle distance
LongApproximately 160 ft. (50 m)
MediumApproximately 130 ft. (40 m)
ShortApproximately 100 ft. (30 m)
Page 217 of 584

ES350_OM_OM33C68U_(U)
2154-5. Using the driving support systems
4
Driving
Pulling the lever toward you cancels
the speed control.
The speed control is also canceled when
the brake pedal is depressed.
Pushing the lever up resumes the
cruise control and returns vehicle
speed to the set speed.
However, cruise control does not
resume when the vehicle speed is
approximately 25 mph (40 km/h) or
less.
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 vehicle-
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 traveling at an extremely slow speed
●Immediately after the cruise control speed was set
●When depressing the accelerator pedal
Canceling and resuming the speed control
1
2
Approach warning (vehicle-to-vehicle distance control mode)
Page 219 of 584

ES350_OM_OM33C68U_(U)
2174-5. Using the driving support systems
4
Driving
■Dynamic radar cruise control can be set when
●The shift lever is in D or range 4 or higher of S has been selected.
●Vehicle speed is above approximately 30 mph (50 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 vehicle-to-vehicle distance control mode, the vehi-
cle speed may decrease below the set speed in order to maintain the distance to the pre-
ceding vehicle.
■Automatic cancelation of vehicle-to-vehicle distance control mode
Vehicle-to-vehicle distance control mode is automatically canceled in the following situ-
ations.
●Actual vehicle speed falls below approximately 25 mph (40 km/h).
●VSC is activated.
●TRAC is activated for a period of time.
●When the VSC or TRAC system is turned off by pressing the VSC OFF switch.
●The sensor cannot detect correctly because it is covered in some way.
●Pre-collision braking is activated.
If vehicle-to-vehicle distance control mode is automatically canceled for any other rea-
son, there may be a malfunction in the system. Contact your Lexus dealer.
■Automatic cancelation of constant speed control mode
Constant speed control mode is automatically canceled in the following situations:
●Actual vehicle speed is more than approximately 10 mph (16 km/h) below the set vehi-
cle speed.
●Actual vehicle speed falls below approximately 25 mph (40 km/h).
●VSC is activated.
●TRAC is activated for a period of time.
●When the VSC or TRAC system is turned off by pressing the VSC OFF switch.
●Pre-collision braking is activated.
If constant speed control mode is automatically canceled for any other reason, there may
be a malfunction in the system. Contact your Lexus dealer.
■Warning messages and buzzers for dynamic radar cruise control
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.