Operation Conditions Of Each Function - Lexus LC500 Manual

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190
4-5. Using the driving support systems

Operation conditions of each function

Lane departure alert function
This function operates when all of the fol-
lowing conditions are met.
• LKA 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.192)
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
multi-information display is set to "On".
(P.79)
• Vehicle is not accelerated or decelerated
by a certain 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 warning is not
displayed. (P.190)
Vehicle sway warning function
This function operates when all of the fol-
lowing conditions are met.
• Setting for "Sway Warning" in
multi-information display is set to "On".
(P.79)
• 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.192)
Lane centering function
This function operates when all of the fol-
lowing conditions are met.
• LKA is turned on.
• Setting for "Steering Assist" and "Lane
Center" in
display are set to "On". (P.79)
• System recognizes white (yellow) lines.
• Dynamic radar cruise control with full-
speed range is operating.
• Width of traffic lane is approximately 8.2
to 13.5 ft. (2.5 to 4.1 m).
• 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 656 ft. (200
m).
• No system malfunctions are detected.
(P.192)
• Vehicle does not accelerate or deceler-
ate by a certain amount or more.
• Steering wheel is not operated with a
steering force level suitable for changing
lanes.
• ABS, VSC, TRAC and PCS are not
of the
operating.
• TRAC or VSC is not turned off.
• Hands off steering wheel warning is not
displayed. (P.190)
• Steering assist function is not operating.
Temporary cancellation of functions
When the operation conditions are no lon-
ger met, a function may be temporarily can-
celed. However, when the operation
conditions are met again, operation of the
function is automatically restored.
(P.190)
Steering assist function/lane centering
function
Depending on the vehicle speed, lane
departure situation, road conditions, etc.,
of the
the driver may not feel the function is oper-
ating or the function may not operate at all.
Lane departure alert function
The warning buzzer may be difficult to hear
due to external noise, audio playback, etc.
Hands off steering wheel warning
In the following situations, a warning mes-
sage urging the driver to hold the steering
of the multi-information

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