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function is automatically restored.
(→P.244)
■
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 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.
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 the hands from the steering
wheel while the steering assist function or
lane centering function is operating, a warn-
ing message is displayed on the multi-infor-
mation display. If the driver continues to
keep the hands off of the steering wheel, a
warning message is displayed and the func-
tion is temporarily canceled. This alert also
operates in the same way when the driver
continuously operates the steering wheel
only a small amount. However, depending
on the road conditions, etc., the function
may not cancel.
White (yellow) lines are only on one side
■
of road
The LKA system will not operate for the
side on which white (yellow) lines could not
be recognized.
Conditions in which functions may not
■
operate properly
In the following situations, the camera sen-
sor may not detect white (yellow) lines and
various functions may not operate normally.
There are shadows on the road that run
●
parallel with, or cover, the white (yellow)
lines.
The vehicle is driven in an area without
●
white (yellow) lines, such as in front of a
tollgate or checkpoint, or at an intersec-
tion, etc.
●
The white (yellow) lines are cracked,
"Botts' dots", "Raised pavement marker"
LS500h_OM_OM50F42U_(U)
4-5. Using the driving support systems
or stones are present.
●
The white (yellow) lines cannot be seen
or are difficult to see due to sand, etc.
The vehicle is driven on a road surface
●
that is wet due to rain, puddles, etc.
The traffic lines are yellow (which may be
●
more difficult to recognize than lines that
are white).
●
The white (yellow) lines cross over a curb,
etc.
The vehicle is driven on a bright surface,
●
such as concrete.
●
The vehicle is driven on a surface that is
bright due to reflected light, etc.
●
The vehicle is driven in an area where the
brightness changes suddenly, such as at
the entrances and exits of tunnels, etc.
Light from the headlights of an oncoming
●
vehicle, the sun, etc. enters the camera.
●
The vehicle is driven where the road
diverges, merges, etc.
The vehicle is driven on a slope.
●
●
The vehicle is driven on a road which tilts
left or right, or a winding road.
●
The vehicle is driven on an unpaved or
rough road.
The vehicle is driven around a sharp
●
curve.
●
The traffic lane is excessively narrow or
wide.
The vehicle is extremely tilted due to car-
●
rying heavy luggage or having improper
tire pressure.
●
The distance to the preceding vehicle is
extremely short.
●
The vehicle is moving up and down a
large amount due to road conditions
during driving (poor roads or road
seams).
The headlight lenses are dirty and emit a
●
faint amount of light at night, or the beam
axis has deviated.
●
The vehicle is struck by a crosswind.
The vehicle has just changed lanes or
●
crossed an intersection.
●
Snow tires, etc. are equipped.
245
4
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