Toyota Land Cruiser Prado (2023 year). Manual in english

352

4-5. Using the driving support systems

• While driving on a curve and for a few seconds after driving on a curve
• If your vehicle is skidding

• If the wheels are misaligned
• If a wiper blade is blocking the front camera
• The vehicle is being driven at extremely high speeds
• When driving on a hill
• If the radar sensor or front camera is misaligned

●

In some situations such as the following, sufficient braking force may not be
obtained, preventing the system from performing properly:
• If the braking functions cannot operate to their full extent, such as when

the brake parts are extremely cold, extremely hot, or wet

• If the vehicle is not properly maintained (brakes or tires are excessively

worn, improper tire inflation pressure, etc.)

• When the vehicle is being driven on a gravel road or other slippery sur-

face

: Applicable to vehicles designed for countries/areas that detection of bicy-

clists is not possible (



P. 342)

: Applicable to vehicles designed for countries/areas that detection of pedes-

trians and/or bicyclists is possible (



P. 342)

■

If VSC is disabled

●

If VSC is disabled (



P. 418), the pre-collision brake assist and pre-collision

braking functions are also disabled.

●

The PCS warning light will turn on and “VSC Turned OFF Pre-Collision
Brake System Unavailable” will be displayed on the multi-information dis-
play.

• If the front of the vehicle is raised or

lowered

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4-5. Using the driving support systems

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LDA (Lane Departure Alert with Yaw Assist

Function)



When driving on a road with clear white (yellow) lane lines, this func-
tion alerts the driver when the vehicle might depart from its lane or
course

and provides assistance by applying a brake force to keep

the vehicle in its lane or course

The LDA system recognizes white
(yellow) lane lines or a course

using the front camera. Addition-
ally, it detects preceding vehicles
using the front camera and radar.

: Boundary between asphalt and the

side of the road, such as grass,
soil, or a curb



: If equipped

Summary of functions

WARNING

■

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 paying careful attention to the surround-
ing 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.

●

When not using the LDA system, use the LDA switch to turn the system
off.

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4-5. Using the driving support systems

WARNING

■

Situations unsuitable for LDA system

In the following situations, use the LDA switch to turn the system off. Failure
to do so may lead to an accident, resulting in death or serious injury.

●

Vehicle is driven on a road surface which is slippery due to rainy weather,
fallen snow, freezing, etc.

●

Vehicle is driven on a snow-covered road.

●

White (yellow) lines are difficult to see due to rain, snow, fog, dust, etc.

●

A spare tire, tire chains, etc. are equipped.

●

When the tires have been excessively worn, or when the tire inflation pres-
sure is low.

●

When your vehicle is towing a trailer (with towing hitch) or during emer-
gency towing.

■

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 any authorized Toyota retailer or Toyota authorized
repairer, or any reliable repairer.

●

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 any authorized Toyota retailer or
Toyota authorized repairer, or any reliable repairer.

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4-5. Using the driving support systems

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WARNING

■

Conditions in which functions may not operate properly

In the following situations, the functions may not operate properly and the
vehicle may depart from its lane. Drive safely by always paying careful
attention to your surroundings and operate the steering wheel to correct the
path of the vehicle without relying solely on the functions.

●

Vehicle is being driven around a sharp curve.

●

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.

●

Objects or patterns that could be mis-
taken for white (yellow) lines are pres-
ent on the side of the road (guardrails,
reflective poles, etc.).

●

Vehicle is driven where the road
diverges, merges, etc.

●

Repair marks of asphalt, white (yellow)
lines, etc. are present due to road
repair.

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4-5. Using the driving support systems

WARNING

●

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.

●

If the edge of the road is not clear or straight.

●

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 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 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).

●

When driving in a tunnel or at night with the headlights off or when a head-
light is dim due to its lens being dirty or it being misaligned.

●

The vehicle is struck by a crosswind.

●

The vehicle has just changed lanes or crossed an intersection.

●

Tires which differ by structure, manufacturer, brand or tread pattern are
used.

●

When tires of a size other than specified are installed.

●

Snow tires, etc. are equipped.

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4-5. Using the driving support systems

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■

Lane departure alert function

When the system determines
that the vehicle might depart
from its lane or course

, a

warning is displayed on the
multi-information display, and a
warning buzzer will sound to
alert the driver.

When the warning buzzer
sounds, check the area around
your vehicle and carefully oper-
ate the steering wheel to move
the vehicle back to the center of
the lane.

: Boundary between asphalt and the

side of the road, such as grass,
soil, or a curb

Functions included in LDA system

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4-5. Using the driving support systems

■

Yaw assist function

When the system determines that the vehicle might depart from its
lane or course

, the system provides assistance as necessary by

applying a brake force for a short period of time to keep the vehicle
in its lane.

: Boundary between asphalt and

the side of the road, such as
grass, soil, or a curb

■

Vehicle sway warning function

When the vehicle is swaying
within a lane, the warning
buzzer will sound and a mes-
sage will be displayed on the
multi-information display to alert
the driver.

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4-5. Using the driving support systems

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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.

LDA indicator
The illumination condition of the
indicator informs the driver of
the system operation status.
Illuminated in white: LDA sys-
tem is operating.
Illuminated in green: Yaw assist
function is operating.
Flashing in orange: Lane departure alert function is operating.
Operation display of yaw assist function
Displayed when the multi-information display is switched to the
driving assist system information screen.

Indicates that yaw assist function is operating.

Turning LDA system on

Indications on multi-information display

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4-5. Using the driving support systems

Lane departure alert function display
Displayed when the multi-information display is switched to the
driving assist system information screen.

: Boundary between asphalt and the side of the road, such as grass, soil, or

a curb



Inside of displayed lines is
white



Inside of displayed lines is
black

Indicates that the system is recog-
nizing white (yellow) lines or a
course

. 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 a course

or is temporar-

ily canceled.

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4-5. Using the driving support systems

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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 50 km/h (32 mph) or more.
• System recognizes white (yellow) lane lines or a course

. (When a

white [yellow] line or course

is recognized on only one side, the system

will operate only for the recognized side.)

• Width of traffic lane is approximately 3 m (9.8 ft.) or more.
• Turn signal lever is not operated.
• Vehicle is not being driven around a sharp curve.
• No system malfunctions are detected. (



P. 363)

: Boundary between asphalt and the side of the road, such as grass, soil,

or a curb

●

Yaw assist function
This function operates when all of the following conditions are met in addi-
tion to the operation conditions for the lane departure alert function.

• Setting for “Yaw Assist” in

of the multi-information display is set to

“On” (



P. 139)

• Vehicle is not accelerated or decelerated by a fixed amount or more.
• Steering wheel is not operated with a steering force level suitable for

changing lanes.

• ABS, Multi Terrain ABS (if equipped), VSC, TRC/Active TRC and PCS

are not operating.

• TRC/Active TRC or VSC is not turned off.

●

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” (



P. 139)

• Vehicle speed is approximately 50 km/h (32 mph) or more.
• Width of traffic lane is approximately 3 m (9.8 ft.) or more.
• No system malfunctions are detected. (



P. 363)

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4-5. Using the driving support systems

■

Temporary cancelation 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. 361)

■

Yaw assist 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.

●

The yaw assist of the function is overridden by the driver’s steering wheel
operation.

●

Do not attempt to test the operation of the yaw assist function.

●

A sound may be heard from the engine compartment when the brake pedal
is depressed, when the yaw assist function is operating. This sound does
not indicate that a malfunction is occurred in the LDA system.

■

Lane departure alert function

●

The warning buzzer may be difficult to hear due to external noise, audio
playback, etc.

●

If the edge of the course

is not clear or straight, the lane departure alert

function may not operate.

●

Do not attempt to test the operation of the lane departure alert function.

: Boundary between asphalt and the side of the road, such as grass, soil,

or a curb

■

Vehicle sway warning function

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

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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4-5. Using the driving support systems

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■

Warning message

If the following warning message is displayed on the multi-information display
and the LDA indicator illuminates in orange, follow the appropriate trouble-
shooting procedure. Also, if a different warning message is displayed, follow
the instructions displayed on the screen.

●

“Lane Departure Alert Malfunction Visit Your Dealer”
The system may not be operating properly. Have the vehicle inspected by
any authorized Toyota retailer or Toyota authorized repairer, or any reliable
repairer.

●

“Lane Departure Alert Unavailable”
The system is temporarily canceled due to a malfunction in a sensor other
than the front camera. Turn the LDA system off, wait for a little while, and
then turn the LDA system back on.
The system is temporarily unavailable as the vehicle repeatedly departs
from its lane or course

in a short period of time. Turn the engine switch to

the “LOCK” position (vehicles without smart entry & start system) or off
(vehicles with smart entry & start system), and then turn it to the “ON” posi-
tion (vehicles without smart entry & start system) or IGNITION ON mode
(vehicles with smart entry & start system) again.

: Boundary between asphalt and the side of the road, such as grass, soil, or

a curb

●

“Lane Departure Alert Unavailable at Current Speed”
The function cannot be used as the vehicle speed exceeds the LDA opera-
tion range. Drive slower.

●

“Lane Departure Alert Unavailable Below Approx 50 km/h”
The LDA system cannot be used as the vehicle speed is less than approxi-
mately 50 km/h (32 mph). Drive the vehicle at approximately 50 km/h (32
mph) or more.

■

Customization

Function settings can be changed. (Customizable features:



P. 769)

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4-5. Using the driving support systems

RSA (Road Sign Assist)



The RSA system recognizes spe-
cific road signs using the front
camera and/or navigation system
(when speed limit information is
available) to provide information
to the driver via the display.

If the system judges that the vehicle is being driven over the speed
limit, performing prohibited actions, etc. according to the recognized
road signs, it notifies the driver through a visual notification and notifi-
cation buzzer.



: 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.

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4-5. Using the driving support systems

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When the front camera recognizes a sign and/or information of a sign
is available from the navigation system, the sign will be displayed on
the multi-information display.

●

When the driving assist system
information is selected, a maxi-
mum of 3 signs can be dis-
played. (



P. 139)

●

When a tab other than the driv-
ing assist system information is
selected, the following types of
road signs will be displayed.
(



P. 139)

• Speed limit begins/ends sign
• Speed limit related informa-

tion sign (Motorway,
Expressway, Urban area,
Residential area)

• End of prohibition sign
• No-entry sign

(when notification is necessary)

• Speed limit with supplemental sign (Ramp way only)

If signs other than speed limit signs are recognized, they will be displayed
in an overlapping stack under the current speed limit sign.

: For vehicles with navigation system

Indication on the multi-information display

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4-5. Using the driving support systems

The following types of road signs, including electronic signs and blink-
ing signs, are displayed.

A non-official (not meeting the Vienna Convention) or a recently introduced
traffic sign may not be displayed.

●

Speed limit road signs

: No speed limit information “

” is displayed when neither speed limit road

sign nor speed limit related information is available.

●

Speed limit related information

1, 2

: Displayed when a sign is recognized but speed limit information for the

road is not available from the navigation system

: No speed limit information “

” is displayed when neither speed limit road

sign nor speed limit related information is available.

●

No-overtaking road signs

Supported types of road signs

Speed limit begins/
Maximum speed zone
begins

Speed limit ends/Maxi-
mum speed zone ends

Motorway entrance

Urban area ending

Motorway exit

Urban area beginning

Expressway entrance

Urban area ending

Expressway exit

Residential area begin-
ning

Urban area beginning

Residential area end-
ing

No overtaking begins

No overtaking ends

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4-5. Using the driving support systems

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●

Other road signs

: For vehicles with navigation system

●

Speed limit with supplemental mark

: Displayed simultaneously with speed limit.

: Contents not recognized.

: If the turn signal indicator is not operated when changing lanes, the mark

does not display.

No-entry

Stop

End of prohibition

Wet

Exit ramp on right

Rain

Exit ramp on left

Ice

Time

Supplemental mark
exists

Toyota Land Cruiser Prado (2023 year). Manual in english - page 22