steering wheel LEXUS RX450h 2016 Service Manual

3034-5. Using the driving support systems
4
Driving
RX450h_U_OM0E013U ◆ Steering assist function
When the system determines that
the vehicle might depart from its
lane, the system provides assistance
as necessary by operating the steer-
ing wheel in small amounts for a
short period of time to keep the
vehicle in its lane. If the system detects that the steering
wheel has not been operated for a
fixed amount of time or the steering
wheel is not being firmly gripped, a
warning is displayed on the multi-
information display and the warning
buzzer sounds.
◆ Ve h i c l e s w a y w a r n i n g
When the vehicle is swaying or
appears as if it may depart from its
lane multiple times, the warning
buzzer sounds and a message is dis-
played on the multi-information dis-
play to alert the driver.

306 4-5. Using the driving support systems
RX450h_U_OM0E013U 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 assist function is operating.
Flashing in amber:
Lane departure alert function is operat-
ing.
Operation display of steering wheel
operation support
Indicates that steering wheel assistance of the steering assist function is oper-
ating.
Lane departure alert function display
Displayed when the multi-information disp lay is switched to the driving assist
system information screen.Indications on multi-information display 1
2
3
Inside of displayed white lines is
white 
Inside 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 amber. Indicates that the system is not able to
recognize white (yellow) lines or is
temporarily canceled.

3074-5. Using the driving support systems
4
Driving
RX450h_U_OM0E013U ■
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. 5 3 6 )●
Steering assist function
This function operates when all of the foll owing 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. 1 0 9 )
• Vehicle is not accelerated or decelerated by a fixed amount or more.
• Steering wheel is not operated with a st eering force level suitable for changing
lanes.
• ABS, VSC, TRAC and PCS are not operating.
• TRAC or VSC is not turned off. ●
Ve h i c l e s w a y w a r n i n g
This function operates when all of the following conditions are met.
• Setting for “Sway Warning” in of the multi-information display is set to “On”.
(  P. 1 0 9 )
• 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. 5 3 6 )

308 4-5. Using the driving support systems
RX450h_U_OM0E013U ■
Temporary cancellation of functions
When operation conditions are no longer me t, a function may be temporarily canceled.
However, when the operation conditions are met again, operation of the function is auto-
matically restored. (  P. 3 0 7 )■
Steering assist function
Depending on the vehicle speed, lane depart ure situation, road conditions, etc., the
operation of the functions may not be reco gnized 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 wheel vibrations due to the road conditions, etc. ■
Hands off steering wheel alert
When the system determines that the driver has removed their hands from the steering
wheel while the steering assist function is operating, a warning message is displayed on
the multi-information displa y and the buzzer sounds.■
White (yellow) lines are on ly on one side of road
The LDA system will not operate for the side on which white (yellow) lines could not be
recognized.

322 4-5. Using the driving support systems
RX450h_U_OM0E013U ●
Motorcycles traveling in the same lane ●
When water or snow thrown up by the surrounding vehicles hinders the detecting of
the sensor
■
Conditions under which the ve hicle-to-vehicle distance co ntrol mode may not function
correctly
In the case of the following conditions, op erate the brake pedal (or accelerator pedal,
depending on the situ ation) as necessary.
As the sensor may not be able to correctly detect vehicles ahead, the system may not
operate properly.
●
When the vehicle ahead of you decelerates suddenly ●
When your vehicle is pointing upwards
(caused by a heavy load in the luggage com-
partment, etc.) ●
Preceding vehicle has an extremely high
ground clearance
●
When the road curves or when the lanes are
narrow
●
When steering wheel operation or your posi-
tion in the lane is unstable

334 4-5. Using the driving support systems
RX450h_U_OM0E013U ■
Conditions under which the ve hicle-to-vehicle distance co ntrol mode may not function
correctly
In the case of the following conditions, op erate the brake pedal (or accelerator pedal,
depending on the situ ation) as necessary.
As the sensor may not be able to correctly detect vehicles ahead, the system may not
operate properly.
●
When the vehicle ahead of you decelerates suddenly ●
When the road curves or when the lanes are
narrow ●
When steering wheel operation or your posi-
tion in the lane is unstable

348 4-5. Using the driving support systems
RX450h_U_OM0E013U ■
Screen display
The parking assist monitor screen will be displayed if the shift position is
shifted to R while the power switch is in ON mode.
Intuitive parking assist
Rear Cross Traffic Alert (if
equipped)
A simplified image is displayed on
the upper part of the screen when an
obstacle is detected. ■
Using the system
Use any of the following modes.
●
Estimated course line display mode (  P. 3 5 0 )
Estimated course lines are dis-
played which move in accor-
dance with the operation of the
steering wheel.Using the Lexus parking assist monitor 1
2

3494-5. Using the driving support systems
4
Driving
RX450h_U_OM0E013U ●
Parking assist guide line display mode (  P. 3 5 2 )
The steering wheel return points
(parking assist guide lines) are
displayed. ●
Distance guide line display mode
Distance guide lines only are dis-
played.
When the shift lever is in any position other than R, the display mode can be
changed in the following procedure.
Press the “MENU” button on the Remote Touch, and then select on the
screen.
Select “Vehicle”, and then select “B ackup Camera Guide Line Settings” on
the screen.
Select the desired display mode.
Estimated course line display
mode (  P. 3 5 0 )
Parking assist guide line display
mode (  P. 3 5 2 )
Distance guide line display mode
Distance guide lines only are dis-
played.Switching the display mode 1
2
3
1
2
3

350 4-5. Using the driving support systems
RX450h_U_OM0E013U ■
Screen description
Vehicle center guide line The line indicates the estimated vehicle center on the ground.
Vehicle width guide line The line indicates a guide path when the vehicle is being backed straight up.
The displayed width is wider than the actual vehicle width.
The line aligns with the estimated course lines when the steering wheel is straight.
Estimated course lines The lines show an estimated course when the steering wheel is turned.
Distance guide line The line moves, together with the estimated course lines, in sync with the steering
wheel. The line shows points approximately 1.5 ft. (0.5 m) (red) and approximately
3 ft. (1 m) (yellow) from the center of the edge of the bumper.
Distance guide line The line shows distance behind the vehicle, a point approximately 1.5 ft. (0.5 m)
(blue) from the edge of the bumper.Estimated course line display mode 1
2
3
4
5

3514-5. Using the driving support systems
4
Driving
RX450h_U_OM0E013U ■
Pa r k i n g o p e ra t i o n
When parking in a space which is in the reverse direction to the space
described in the procedure below, the steering directions will be reversed.
Shift the shift lever to R.
Turn the steering wheel so that
the estimated course lines are
within the parking space, and
back up slowly.
Parking space
Estimated course lines
When the rear position of the
vehicle has entered the parking
space, turn the steering wheel so
that the vehicle width guide lines
are within the left and right divid-
ing lines of the parking space.
Vehicle width guide line 1
2
1
2
3
3