Lexus UX 250h 2020 Owner's Manual page 215

ft. (3 m) or more.
• No system malfunctions are detected.
(P.214)
● 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". (P.87)
• 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.214)
• 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
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.213)
• 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 con-
ditions are met again, operation of the
function is automatically restored.
(P.212)
● If the operation conditions (P.212) are
no longer met while the lane centering
function is operating, the steering wheel
may vibrate and the buzzer may sound to
indicate that the function has been tem-
porarily canceled. However, if the "Steer-
ing wheel vibration" customization
4-5. Using the driving support systems
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
straight, the lane departure alert function
may not operate.
Vehicle with BSM: It may not be possible
●
for the system to determine 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-
ings.
213
*
is not clear or
4