Toyota Avalon (XX50): LDA (Lane Departure Alert with steering control)

Summary of functions

When driving on highways and freeways with white (yellow) lines, this function alerts the driver when the vehicle might depart from its lane and provides assistance by operating the steering wheel to keep the vehicle in its lane.

The LDA system recognizes visible white (yellow) lines with the camera sensor on the upper portion of the windshield.

Functions included in LDA system

Lane departure alert function

When the system determines that the vehicle might depart from its lane, a warning is displayed 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.

Steering control function

When the system determines that the vehicle might depart from its lane, the system provides assistance as necessary by operating the steering wheel in small amounts for a short period of time to keep the vehicle in its lane.

If the system detects that the steering wheel has not been operated for a fixed amount of time or the steering wheel is not being firmly gripped, a warning is displayed on the multi-information display and the function is temporarily canceled.

Vehicle sway warning function

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.

WARNING â– Before using LDA system Do not rely solely upon the LDA system. The LDA system does not automatically 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 paying careful attention to the surrounding 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. â– To avoid operating LDA system by mistake When not using the LDA system, use the LDA switch to turn the system off.

 

WARNING â– 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 spare tire, tire chains, etc. are equipped. When the tires have been excessively worn, or when the tire inflation pressure is low. Tires which differ by structure, manufacturer, brand or tread pattern are used. 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 on a road surface which is slippery due to rainy weather, fallen snow, freezing, etc. Vehicle is driven in traffic lanes other than on highways and freeways. Vehicle is driven in a construction zone. â– 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

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.

Indications on multi-information display

The illustration used is intended as an example, and may differ from the image that is actually displayed on the multi-information display.

1. 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 steering control function is operating.

   Flashing in amber: Lane departure alert function is operating.

2. Operation display of steering wheel operation support
   Indicates that steering wheel assistance of the steering control function is operating.
3. Lane departure alert function display
   Displayed when the multi-information display is switched to the driving assist system information screen.

Inside of displayed white lines is white

Indicates that the system is recognizing white (yellow) lines. When the vehicle departs from its lane, the white line displayed on the side the vehicle departs from flashes yellow.

Inside of displayed white lines is black

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

â– 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.
• Steering control function
  This function operates when all of the following conditions are met in addition to the operation conditions for the lane departure alert function.
  • Setting for "Steering Assist" in of the multi-information display is set to "On".
  • 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.
• Vehicle sway warning function
  This function operates when all of the following conditions are met.
  • Setting for "Sway Warning" in of the multi-information display is set to "On".
  • 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.

â– Temporary cancellation of functions When the 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.

â– 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.

â– Lane departure alert function The warning buzzer may be difficult to hear due to external noise, audio playback, etc.

â– Hands off steering wheel warning 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 urging the driver to hold the steering wheel and the symbol shown in the illustration are displayed on the multi-information display

If the driver continues to keep their hands off of the steering wheel, a warning message and the symbol shown in the illustration are displayed on the multi-information display, and the function is temporarily canceled.

This warning also operates in the same way when the driver continuously operates the steering wheel only a small amount. Always keep your hands on the steering wheel when using this system, regardless of warnings.

Depending on the vehicle and road conditions, the warning may not operate.

â– Vehicle sway warning function 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 displayed on the multi-information display.

Depending on the vehicle and road conditions, the warning may not operate.

â– 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.

â– 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, "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 is struck by a crosswind.
• The vehicle has just changed lanes or crossed an intersection.
• Snow tires, etc. are equipped.

â– Warning message If the following warning message is displayed on the multi-information display and the LDA indicator illuminates in amber, follow the appropriate troubleshooting procedure.

Warning message	Details/Actions
"LDA Malfunction Visit Your Dealer"	The system may not be operating properly. → Have the vehicle inspected at your Toyota dealer.
"Front Camera Unavailable"	The operation conditions of the camera 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.
"LDA Unavailable"	The LDA system is temporarily canceled due to a malfunction in a sensor other than the camera sensor. → Turn the LDA system off and follow the appropriate troubleshooting procedures for the warning message. Afterward, drive the vehicle for a short time, and then turn the LDA system back on.
"LDA Unavailable Below Approx. 32MPH"	The LDA system cannot be used as the vehicle speed is less than approximately 32 mph (50 km/h). → Drive the vehicle at approximately 32 mph (50 km/h) or more.

If a different warning message is displayed, follow the instructions displayed on the screen.

â– Customization Some functions can be customized.