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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 automatically restored. ( P. 296)
■ Steering control function
Depending on the vehicle speed, lane departure situation, road conditions,
etc., the operation of the functions may not be recognized 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 play-
back, etc.
■ Hands off steering wheel alert
When the system determines that the driver has removed their hands from
the steering wheel while the steering control function is operating, a warning
message is displayed on the multi-information display.
If the driver continues to keep their hands off of the steering wheel, the
buzzer sounds, a warning message is displayed and the function is temporar-
ily canceled. This alert also operates in the same way when the vehicle is
driven with the steering wheel lightly gripped. However, depending on the
road conditions, etc., the function may not cancel.
■ White (yellow) lines are only 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 functions may not operate properly
In the following situations, the camera sensor 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 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 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 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 driving (poor r oads 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.
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■ Warning message
If the following warning message is displayed on the multi-information dis-
play, follow the appropriate troubleshooting procedure.
Warning messageDetails/Actions
“Lane Departure Alert
Malfunction.
Visit Your Dealer.”
The system may not be operating
properly.
Have the vehicle inspected at any
authorized Toyota retailer or Toyota
authorized repairer, or any reliable
repairer.
“Front Camera Vision Blocked.
Clean and Demist Windshield.”
Dirt, rain, condensation, ice, snow,
etc., are present on the windshield in
front of the camera sensor.
Turn the LDA system off, remove
any dirt, rain, condensation, ice,
snow, etc., from the windshield, and
then turn the LDA system back on.
“Front Camera
Unavailable.”
The operation conditions of the cam-
era sensor (temperature, etc.) are not
met.
When the operation conditions of
the camera sensor (temperature,
etc.) are met, the LDA system will
become available. Turn the LDA
system off, wait for a little while,
and then turn the LDA system back
on.
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If a different warning message is displayed, follow the instructions displayed
on the screen.
■ Customization
The following settings can be changed.
For how to change settings, refer to P. 679.
“LDA Unavailable.”
The LDA system is temporarily can-
celed due to a malfunction in a sensor
other than the camera sensor.
Turn the LDA system off and follow
the appropriate troubleshooting
procedures for warning message.
Afterward, drive the vehicle for a
short time, and then turn the LDA
system back on.
“LDA Unavailable Below
Approx. 50km/h (32 MPH).”
The LDA system cannot be used as
the vehicle speed is approximately
less than 50 km/h (32 mph).
Drive the vehicle at approximately
50 km/h (32 mph) or more.
Warning messageDetails/Actions
FunctionSetting details
Lane departure alert functionAdjust alert sensitivity
Steering control functionTurn steering wheel assistance on and off
Vehicle sway warningTurn 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, performing prohibited actions, etc., in relation to the recognized
road signs, it alerts the driver using a warning display and warning
buzzer*.
*: This setting needs to be customized.
: If equipped
Summary of function
WARNING
■ Before using the RSA
Do not rely solely upon the RSA system. RSA is a system which supports
the driver by providing information, but it is not a replacement for a driver’s
own vision and awareness. 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 multi-
information display when the vehicle passes the sign.
● When the driving assist system
information is selected, a maxi-
mum of 3 signs can be dis-
played. ( P. 303)
● When other than the driving
assist system information is
selected, a speed limit sign or
an all canceled sign can be dis-
played. ( P. 303)
A no overtaking sign and a speed
limit sign with supplemental mark
are not displayed. However, if
signs other than speed limit signs
are recognized, they are men-
tioned in a stack under the current
speed limit sign.
Indication on the multi-information display
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The following types of road signs, including electronic signs and blink-
ing signs, are recognized.
A non-official (not meeting the Vienna Convention) or a recently intro-
duced traffic sign may not be recognized.
Types of recognized road signs
Typ eMulti-information display
Speed limit begins/ends
Highway entrance/exit
Speed limit with
supplemental
mark
(Displayed simul-
taneously with
speed limit)
(Display example)
Wet
Rain
Ice
On/off ramp*
Supplemental
mark exists
(Contents not rec-
ognized)
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*: If the turn signal indicator is not operated when changing lanes, the mark
does not display.
In the following situations, the RSA system alerts the driver using a
warning display.
● When the vehicle speed exceeds the speed warning threshold
applied to the speed limit of the sign displayed on the multi-informa-
tion display, the sign color becomes inverted.
● If it is detected that your vehicle is overtaking when a no overtaking
sign is displayed on the multi-information display, the sign flashes.
No overtaking begins/ends
All canceled
(All restrictions canceled. Returns to
default road regulation.)
Warning display
Typ eMulti-information display