2017 Lexus GS200t Owner's Manual

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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
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 orange. Indicates that the system is not able to
recognize white (yellow) lines or is
temporarily canceled.

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■Operation conditions of each function
●Lane departure alert function
This function operates when all of the following conditions are met.

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■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. 322)
■Steering control 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 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 alert
For Israel: When the system determines that the driver has removed the hands from the
steering wheel while the steering control functi on is operating, a warning message is dis-
played on the multi-information display and the buzzer sounds.
Except for Israel: When the system determines that the driver has removed the hands
from the steering wheel while the steering cont rol function is operating, a warning mes-
sage is displayed on the multi-information display.
If the driver continues to keep the hands off of the steering wheel, the buzzer sounds, a
warning message is displayed and the function is temporarily canceled. This alert also
operates in the same way when the vehicle is driven with the steering whee l lightly
gripped. However, depending on the road conditions, etc., the function may not cancel.
■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.

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■Conditions in which functi ons may not operate properly
In the following situations, the camera sensor may not detect white (yellow) lines and var-
ious functions may not operate normally.
●There are shadows on the road that run paralle l 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 intersection, etc.
●The white (yellow) lines are cracked, “Raised pavement marker” 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 t ilts 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 carrying 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 driv-
ing (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.
■Warning message
Warning messages are used to indicate a syst em malfunction or to inform the driver of
the need for caution while driving. ( P. 524)

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■Customization
The following settings can be changed.
For how to change settings, refer to P. 634.
FunctionSetting details
Lane departure alert functionAdjust alert sensitivity
Steering control functionTurn steering wheel assistance on and off
Vehicle sway warning functionTurn function on and off
Adjust alert sensitivity

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RSA (Road Sign Assist)
RSA recognizes specific road signs
using the camera sensor and provides
information to the driver via the multi-
information display.
If the system judges that the vehicle is being driven over the speed limit, perform-
ing prohibited actions, etc. in relation to the recogniz
ed road signs, it alerts the
driver using a warning display and warning buzzer *
.
* : This setting needs to be customized.
: If equipped
Summary of function
Camera sensor
WARNING
■Before using the RSA
Do not rely solely upon the RSA system. RS A is a system which supports the driver by
providing information, but it is not a replacement for a driver’s own vision and aware-
ness. Drive safely by always paying careful attention to the traffic rules.
Inappropriate or negligent driving could lead to an unexpected accident.

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After the camera sensor recognizes a sign, it is displayed on the mu lti-informa-
tion display when the vehicle passes the sign. ● When the driving assist system infor-
mation is selected, a maximum of 3
signs can be displayed. ( P. 121, 129)
● When other than the driving assist
system information is selected, a
speed limit sign or an all canceled
sign can be displayed. ( P. 121, 129)
A no overtaking sign and a speed
limit sign with supplemental mark are
not displayed. Howeve r, if signs other
than speed limit signs are recog-
nized, they are mentioned in a stack
under the current speed limit sign.
Indication on the mult i-information display

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The following types of road signs, including electronic signs and blinking signs,
are recognized.
A non-official (not meeting the Vienna Convention) or a recently introduced traffic
sign may not be recognized.
Types of recognized road signs
TypeMulti-information display
Speed limit begins/ends
Speed limit with sup-plemental mark
(Displayed simulta-
neously with speed limit)
(Display example)
Wet
Rain
Ice
On/off ramp *1
Supplemental mark
exists
(Contents not recog-
nized)
No overtaking begins/ends
No-entry *2
All canceled
(All restrictions canceled. Returns to default road regulation.)