2020 Toyota Highlander Owners Manual - Lda (lane departure alert)

Lda (lane departure alert)

Summary of function

While driving on a road that has lane markers, this system recognizes the lane markers using a camera as a sensor to alert the driver when the vehicle deviates from its lane.

If the system judges that the vehicle has deviated from its lane, it alerts the driver using a buzzer and indications on the multi-information display.

Camera sensor

Turning the lda system on

• Vehicles with monochrome display

• Vehicles with color display

Press the lda switch to activate the system.

The lda indicator and lane lines will come on.

Press the switch again to turn the lda system off.

The lda system will remain on or off even if the engine switch is turned to ignition on mode.

Operating conditions

• When the vehicle speed is approximately 32 mph (50 km/h) or more
•  when the lane width is more than approximately 8.2 Ft. (2.5 M)
•  when driving on a straight road or through a curve with a radius of more than approximately 328 ft. (100 M)

Indication on the multi-information display

• Vehicles with monochrome display

• Vehicles with color display

When the inside of both lane lines turn white: indicates that both right and left lane markers are recognized.

If the vehicle deviates from the lane, the lane line on the side the vehicle has deviated from will flash.

• Vehicles with monochrome display

• Vehicles with color display

When the inside of either lane line turns white: indicates that the lane marker on the white-marked side is recognized.

If the vehicle deviates from the side of a lane with recognized lane markers, the lane line will flash.

• Vehicles with monochrome display

When both lane lines are shown in fine lines:

Indicates that no lane markers are recognized or the lda system is temporarily canceled.

• Vehicles with color display

When the inside of both lane lines are black:

Indicates that no lane markers are recognized or the lda system is temporarily canceled.

Temporary cancelation of the lda system functions

If any of the following occurs, the lda system functions will be temporarily canceled. The functions will resume after the necessary operating conditions have returned.

• The turn signal lever is operated.
• The vehicle speed deviates from the operating range of the lda system functions.
• When the lane lines cannot be recognized while driving.
• When the lane departure warning function is activated.

  The lane departure warning function will not operate again for a several seconds after it has been activated, even if the vehicle leaves the lane again.

The lane departure warning

Depending on the audio system sound level or air conditioning fan noise while the audio system or air conditioning system is in use, it may be difficult to hear the warning sound.

After the vehicle has been parked in the sun

The lda system may not be available and a warning message  Will be displayed for a while after driving has started. When the temperature in the cabin decreases and the temperature around the camera sensor Becomes suitable for its operation, the functions will begin to operate.

If there are lane markers on only one side of the vehicle

The lane departure warning will not operate for the side on which lane markers could not be recognized.

Conditions in which the function may not operate correctly

In the following situations, the camera sensor may be unable to recognize lane markers causing the lane departure warning function to operate incorrectly.

However, this does not indicate a malfunction.

• When driving through an area with no lane markers, such as a tollbooth, a crossing or before a ticket checkpoint
• when driving on a sharp curve
• when lane markers are extremely narrow or extremely wide
• when the vehicle leans to one side an unusual amount due to a heavy load or improper tire inflation pressure
• when the following distance between your vehicle and the vehicle ahead is extremely short
• when the lane markers are yellow (these may be more difficult for the system to recognize compared to white markers.)
• When the lane markers are broken, botts' dots (raised pavement markers) or stones
• when the lane markers are on a curb etc.
• When lane markers are obscured or partially obscured by sand, dirt, etc.
• When there are shadows on the road running parallel with lane markers, or if a shadow covers the lane markers
• when driving on a particularly bright road surface, such as concrete
• when driving on a road surface that is bright due to reflected light
• when driving in a location where the light level changes rapidly, such as the entrance to or exit from a tunnel
• when sunlight or the headlights of oncoming vehicles are shining directly into the camera lens
• when driving on roads that are branching or merging
• when driving on a road surface that is wet due to rain, previous rainfall, standing water, etc.
• When the vehicle experiences strong up-and-down motion such as when driving on an extremely rough road or on a seam in the pavement
• when headlight brightness at nighttime is reduced due to dirt on the lenses, or when the headlights are misaligned
• when driving on winding roads or roads that are uneven
• when driving on rough or unpaved roads

When changing the tires

Depending on the tires used, sufficient performance may not be maintainable.

Warning messages for the lda system

Warning messages are used to indicate a system malfunction or to inform the driver of the need for caution while driving.

Warning   Before using the lda system   Do not rely solely on the lda system. The lda system does not drive the vehicle automatically, nor does it reduce the amount of care you need to take. As such, the driver must always assume full responsibility for understanding his/her surroundings, for operating the steering wheel to correct the driving line, and for driving safely. Inappropriate or negligent driving could lead to an accident. To avoid operating the lda by mistake   Switch the lda system off using the lda switch when not in use. Situations unsuitable for lda system   Do not use the lda system in any of the following situations. Otherwise, the system may not function correctly and could result in an accident. When driving with tire chains, a spare tire, or similar equipment when there are objects or structures along the roadside that might be misinterpreted as lane markers (such as guardrails, a curb, reflector posts, etc.) When driving on snowy roads when pavement lane markers are difficult to see due to rain, snow, fog, sand dust, etc. When there are visible lines on the pavement from road repairs, or if the remains of old lane markers are still visible on the road when driving on a road with lane closures due to maintenance, or when driving in a temporary lane

Notice   To prevent damage to or incorrect operation of the lda system   Do not modify the headlights or attach stickers to the surface of the lights. Do not modify the suspension or replace it with non-genuine parts. Do not install or place anything on the hood or the grille. Also, do not install a grille guard (bull bars, kangaroo bar etc.). If your windshield needs repairs, contact your toyota dealer. Camera sensor   Observe the following to ensure that the lda system functions correctly. Keep the windshield clean at all times. Performance could be affected if the windshield is dirty, or if raindrops, condensation or ice are adhering to the windshield. Do not attach a sticker or other items to the windshield near the camera sensor.   Do not spill liquid onto the camera sensor do not attach window tinting to the windshield. Do not install an antenna in front of the camera lens.   ?œIf the windshield is fogged up, use the windshield defogger to remove fog from the windshield. When it is cold, using the heater with air blowing to the feet may allow the upper part of the windshield to fog up. This will have a negative effect on the images. Do not scratch the camera lens, or let it get dirty. When cleaning the inside of the windshield, be careful not to get any glass cleaner etc. On the lens. Also, do not touch the lens. For lens repair, contact your toyota dealer. Do not change the installation position or direction of the camera sensor or remove it. The direction of the camera sensor is precisely adjusted. Do not subject the camera sensor to strong impact or force, and do not disassemble the camera sensor. Do not replace windshield with non-genuine windshield. Contact your toyota dealer.