LDA (Lane Departure Alert)
When driving on roads with white (yellow) lines, this function alerts the driver when the vehicle might depart from its lane. The LDA system recognizes visi- ble white (yellow) lines with the front camera on the upper portion of the windshield.
◆ Lane departure alert function
When the system determines that the vehicle might depart from its lane, a warning is dis- played on the multi-information display and the warning buzzer sounds to alert the driver.
When the warning buzzer sounds, check the surrounding road situation and carefully operate the steering wheel to move the vehicle back to the center of the lane.
Summary of functions
Functions included in LDA system
◆ Vehicle sway warning
When the vehicle is swaying or appears as if it may depart from its lane multiple times, the warning buzzer sounds and a message is displayed on the multi-information display to alert the driver.
■Before using LDA system
Do not rely solely upon the LDA system. The LDA system does not auto- matically drive the vehicle or reduce the amount of attention that must be paid to the area in front of the vehicle. The driver must always assume full responsibility for driving safely by always paying careful attention to the sur- rounding conditions and operating the steering wheel to correct the path of the vehicle. Also, the driver must take adequate breaks when fatigued, such as from driving for a long period of time. Failure to perform appropriate driving operations and pay careful attention may lead to an accident, resulting in death or serious injury.
■To avoid operating LDA system by mistake
When not using the LDA system, use the LDA switch to turn the system off.
■Situations unsuitable for LDA system
Do not use the LDA system in the following situations. The system may not operate properly and lead to an accident, resulting in death or serious injury. ●A compact spare tire, tire chains, etc., are equipped. ●Objects or patterns that could be mistaken for white (yellow) lines are
present on the side of the road (guardrails, curbs, reflective poles, etc.). ●Vehicle is driven on a snow-covered road. ●White (yellow) lines are difficult to see due to rain, snow, fog, dust, etc. ●Asphalt repair marks, white (yellow) line marks, etc., are present due to
road repair. ●Vehicle is driven in a temporary lane or restricted lane due to construction
work. ●Vehicle is driven in a construction zone.
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Press the LDA switch to turn the LDA system on.
The LDA indicator illuminates and a message is displayed on the multi-information display. Press the LDA switch again to turn the LDA system off. When the LDA system is turned on or off, operation of the LDA system continues in the same condition the next time the engine is started.
WARNING
■Preventing LDA system malfunctions and operations performed by
mistake
●Do not modify the headlights or place stickers, etc., on the surface of the
lights. ●Do not modify the suspension, etc. If the suspension, etc., needs to be
replaced, contact your Toyota dealer. ●Do not install or place anything on the hood or grille. Also, do not install a
grille guard (bull bars, kangaroo bar, etc.). ● If your windshield needs repairs, contact your Toyota dealer.
Turning LDA system on
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LDA indicator The illumination condition of the indicator informs the driver of the system operation status. Illuminated in green: LDA system is operating. Flashing in yellow: Lane departure alert function is operating. Lane departure alert function display Displayed when the multi-informa- tion display is switched to the driv- ing assist system information screen.
Indications on multi-information display
Inside of displayed white lines is white Inside of displayed white lines is black
Indicates that the system is recog- nizing white (yellow) lines. When the vehicle departs from its lane, the white line displayed 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. • LDA 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. 275)
●Vehicle sway warning function This function operates when all of the following conditions are met. • Setting for “ Warning” in screen of the multi-information display is
set to on. (P. 551) • 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. 275)
■Temporary cancellation of functions
When the operation conditions are no longer met, a function may be tempo- rarily canceled. However, when the operation conditions are met again, oper- ation of the function is automatically restored. (P. 273)
■Lane departure alert function
The warning buzzer may be difficult to hear due to external noise, audio play- back, etc.
■Vehicle sway warning function
Depending on the vehicle and road conditions, the warning may not operate.
■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.
When the system determines that the vehicle is swaying while the vehicle sway warning function is operating, a buzzer sounds and a warning message urging the driver to rest and the symbol shown in the illustration are simultaneously dis- played on the multi-information display.
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■Conditions in which functions may not operate properly
In the following situations, the front camera 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, “Botts’ dots”, “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 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 has just changed lanes or crossed an intersection.
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■Warning message
Warning messages are used to indicate a system malfunction or to inform the driver of the need for caution while driving. (P. 481)
■Customization
The following settings can be changed.
For how to change settings, refer to P. 548
Function Setting details Lane departure alert function Adjust alert sensitivity
Vehicle sway warning function Turn function on and off Adjust alert sensitivity
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