steering TOYOTA HIGHLANDER 2021 (in English) Workshop Manual

2464-5. Using the driving support systems
HIGHLANDER_Upre-collision brak
e assist and
pre-collision braking functions are
also disabled.
●The PCS warning light will turn on
and “VSC Turned OFF Pre-Colli-
sion Brake System Unavailable”
will be displayed on the
multi-information display.
LTA (Lane Tracing
Assist)
While driving on a road with
clear white (yellow) lane
lines, the LTA system warns
the driver if the vehicle may
deviate from the current
lane or course
*, and also
can slightly operate the
steering wheel to help avoid
deviation from the lane or
course
*. Also, while the
dynamic radar cruise con-
trol with full-speed range
( P.257) is operating, this
system will operate the
steering wheel to maintain
the vehicle’s lane position.
The LTA system recognizes
white (yellow) lane lines or a
course
* using the front cam-
era. Additionally, 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

2474-5. Using the driving support systems
4
Driving
HIGHLANDER_U
WARNING
■Before using LTA system
●Do not rely solely upon the LTA
system. The LTA system does
not automatically drive the vehi-
cle 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 atten-
tion to the surrounding condi-
tions 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 care-
ful attention may lead to an
accident, resulting in death or
serious injury.
■Situations unsuitable for LTA
system
In the following situations, use the
LTA 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 sur-
face which is slippery due to
rainy weather, fallen snow,
freezing, etc.
●Vehicle is driven on a snow-cov-
ered road.
●White (yellow) lines are difficult
to see due to rain, snow, fog,
dust, etc.
●Vehicle is driven in a temporary
lane or restricted lane due to
construction work.
●Vehicle is driven in a construc-
tion zone.
●A spare tire, tire chains, etc. are
equipped.
●When the tires have been
excessively worn , or when the
tire inflation pressure is low.
●When your vehicle is towing a
trailer or during emergency tow-
ing.
■Preventing LTA system mal-
functions and operations per-
formed by mistake
●Do not modify the headlights or
place stickers, etc. on the sur-
face 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.
■Conditions in which functions
may not operate properly
In the following situations, the
functions may not operate prop-
erly 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.

2504-5. Using the driving support systems
HIGHLANDER_U
■Lane departure alert func-
tion
When the system determines
that the vehicle might depart
from its lane or course
*, a warn-
ing 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 operate the steering
wheel to move the vehicle back to
the center of the lane.
Vehicle with BSM: When the sys-
tem determines that the vehicle
might depart from its lane and that
the possibility of a collision with an
overtaking vehicle in the adjacent
lane is high, the lane departure
alert will operate ev en if the turn
signals are operating.
*: Boundary between asphalt and the side of the road, such as
grass, soil, or a curb
■Steering assist function
When the system determines
that the vehicle might depart
from its lane or course
*, the sys-
tem provides assistance as nec-
essary by operating the steering
wheel in small amounts for a
short period of time to keep the
vehicle in its lane.
Vehicle with BSM: When the sys-
tem determines that the vehicle
might depart from its lane and that
the possibility of a collision with an
overtaking vehicle in the adjacent
lane is high, the steering assist
function will operate even if the turn
signals are operating.
*: Boundary between asphalt and the side of the road, such as
grass, soil, or a curb
Functions included in LTA
system

2514-5. Using the driving support systems
4
Driving
HIGHLANDER_U
■Vehicle sway warning func-
tion
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.■Lane centering function
This function is linked with
dynamic radar cruise control
with full-speed range and pro-
vides the required assistance by
operating the steering wheel to
keep the vehicle in its current
lane.
When dynamic radar cruise control
with full-speed range is not operat-
ing, the lane centering function
does not operate.
In situations where the white (yel-
low) lane lines are difficult to see or
are not visible, such as when in a
traffic jam, this function will operate
to help follow a preceding vehicle
by monitoring the position of the
preceding vehicle.

2524-5. Using the driving support systems
HIGHLANDER_U
■Turning the LTA system on
Press the LTA switch.
The LTA indicator illuminates and a
message is displayed on the
multi-information display.
■Turning the lane centering
function ON/OFF
Press the LTA switch.
The lane center ing function will
change between ON/OFF each
time the switch is pressed.
The current setting will be dis-
played on the multi-information dis-
play.
■Turning the LTA system off
Press and hold the LTA switch.
The LTA indicator light turns off
when the LTA is turned OFF.
Press the switch again to turn the
system on.
When the LTA system is turned on
or off, operation of the LTA system
continues in the same condition the
next time the engine is started.
LTA i n d i c a t o r
The illumination condition of the
indicator informs the driver of the
system operation status.
Illuminated in white: LTA system is
operating.
Illuminated in green: Steering wheel
assistance of the steering assist
LTA system setting
Indications on multi-infor-
mation display

2534-5. Using the driving support systems
4
Driving
HIGHLANDER_Ufunction or lane centering function
is operating.
Flashing in orange: Lane departure
alert function is operating.
Operation display of steering
wheel operation support
Displayed when the multi-informa-
tion display is switched to the driv-
ing support system information
display.
Indicates that steering wheel assis-
tance of the steering assist function
or lane centering function is operat-
ing.
Both outer sides of the lane are dis-
played: Indicates that steering
wheel assist of the lane centering
function is operating.
One outer side of the lane is dis-
played: Indicates that steering
wheel assist of the steering assist
function is operating.
Both outer sides of the lane are
flashing: Alerts the driver that their
input is necessary to stay in the
center of the lane (lane centering
function).
Lane departure alert function
display
Displayed when the multi-informa-
tion display is switched to the driv-
ing support system information
display.
Inside of displayed lines is
white
Indicates that the system is rec-
ognizing 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.
Inside of displayed lines is
black
Indicates that the system is not
able to recognize white (yellow)
lines or a course
* or is temporar-
ily canceled.
*: Boundary between asphalt and the side of the road, such as
grass, soil, or a curb
Follow-up cruising display
Displayed when the multi-informa-
tion display is switched to the driv-
ing support system information

2544-5. Using the driving support systems
HIGHLANDER_Udisplay.
Indicates that steering assist of the
lane centering function is operating
by monitoring the position of a pre-
ceding vehicle.
When the follow-up cruising display
is displayed, if the preceding vehi-
cle moves, your vehicle may move
in the same way. Always pay care-
ful attention to your surroundings
and operate the steering wheel as
necessary to correct the path of the
vehicle and ensure safety.
■Operation conditions of each
function
●Lane departure alert function
This function operates when all of
the following conditions are met.
• LTA is turned on.
• Vehicle speed is approximately 32 mph (50 km/h) or more.
*1
• System recognizes white (yellow) lane lines or a course*2. (When a
white [yellow] line or course*2 is
recognized on only one side, the
system will operate only for the
recognized side.)
• Width of traffic lane is approxi- mately 9.8 ft. (3 m) or more.
• Turn signal lever is not operated. (Vehicle with BSM: Except when
another vehicle is in the lane on
the side where the turn signal was
operated)
• Vehicle is not being driven around a sharp curve.
• No system malfunctions are detected. ( P.256)
*1: The function operates even if the
vehicle speed is less than
approximately 32 mph (50 km/h)
when the lane centering function
is operating.
*2: Boundary between asphalt and the side of the road, such as
grass, soil, or a curb
●Steering assist function
This function operates when all of
the following conditions are met in
addition to the operation conditions
for the lane departure alert function.
• 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, VSC, TRAC and PCS are not operating.
• TRAC 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.89, 98)
• Vehicle speed is approximately 32 mph (50 km/h) or more.
• Width of traffic lane is approxi- mately 9.8 ft. (3 m) or more.
• No system malfunctions are
detected. ( P.256)
●Lane centering function
This function operates when all of
the following conditions are met.
• LTA is turned on.
• Setting for “Lane Center” in of the multi-information display are
set to “ON”. ( P.89, 98)
• This function recognizes white (yellow) lane lines or the position
of a preceding vehicle (except
when the preceding vehicle is
small, such as a motorcycle).
• The dynamic radar cruise control with full-speed range is operating
in vehicle-to-vehicle distance con-
trol mode.
• Width of traffic lane is approxi-
mately 10 to 13 ft. (3 to 4 m).
• Turn signal lever is not operated.
• Vehicle is not being driven around a sharp curve.
• No system malfunctions are detected. ( P.256)
• Vehicle does not accelerate or decelerate by a fixed amount or

2554-5. Using the driving support systems
4
Driving
HIGHLANDER_Umore.
• 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. ( P.255)
• The vehicle is being driven in the center of a lane.
• Steering assist function is not
operating.
■Temporary cancelation of func-
tions
●When operation conditions are no
longer met, a function may be
temporarily canceled. However,
when the operation conditions are
met again, operation of the func-
tion is automatically restored.
( P.254)
●If the operation conditions
( P.254) are no longer met while
the lane centering function is
operating, the buzzer may sound
to indicate that the function has
been temporarily canceled.
■Steering assist function/lane
centering function
●Depending on the vehicle speed,
lane departure situation, road con-
ditions, etc., the driver may not
feel the function is operating or
the function may not operate at
all.
●The steering control of the func-
tion is overridden by the driver’s
steering wheel operation.
●Do not attempt to test the opera-
tion of the steering assist function.
■Lane departure alert function
●The warning buzzer may be diffi-
cult to hear due to external noise,
audio playback, etc.
●If the edge of the course* is not
clear or straight, the lane depar-
ture alert function may not oper-
ate.
●Vehicle with BSM: It may not be
possible for the system to deter-
mine if there is a danger of a colli-
sion with a vehicle in an adjacent
lane.
●Do not attempt to test the opera-
tion of the lane departure alert
function.
*: Boundary between asphalt and
the side of the road, such as
grass, soil, or a curb
■Hands off steering wheel warn-
ing
In the following situations, a warning
message urging the driver to hold
the steering wheel and the symbol
shown in the illustration are dis-
played on the multi-information dis-
play to warn the driver. The warning
stops when the system determines
that the driver holds the steering
wheel. Always keep your hands on
the steering wheel when using this
system, regardless of warnings.
●When the system determines the
driver is not holding the steering
wheel while the lane centering
function is operating.
If the driver continues to keep their
hands off of the steering wheel, the
buzzer sounds, the driver is warned
and the function is temporarily can-
celed. This warning also operates in
the same way when the driver con-
tinuously operates the steering
wheel only a small amount.
●When the system determines that
the vehicle may deviate from the
lane while driving around a curve
while the lane centering function is

2564-5. Using the driving support systems
HIGHLANDER_Uoperating.
Depending on the vehicle condition
and road conditions, the warning
may not operate. Also, if the system
determines that the vehicle is driv-
ing around a curve, warnings will
occur earlier than during
straight-lane driving.
●When the system determines that
the driver is driving without hold-
ing the steering wheel while the
steering wheel assist of the steer-
ing assist function is operating.
If the driver continues to keep their
hands off of the steering wheel and
the steering wheel assist is operat-
ing, the buzzer sounds and the
driver is warned . Each time the
buzzer sounds, the continuing time
of the buzzer becomes longer.
■Vehicle sway warning function
When the system de termines 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 dis-
play.
Depending on the vehicle and road
conditions, the warning may not
operate.
■Warning message
If the following warning message is
displayed on the multi-information
display and the LTA indicator illumi-
nates in orange, follow the appropri-
ate troubleshooting procedure. Also,
if a different warning message is
displayed, follow the instructions
displayed on the screen.
●“LTA Malfunction Visit Your
Dealer”
The system may not be operating
properly. Have the vehicle inspected
by your Toyota dealer.
●“LTA Unavailable”
The system is temporarily canceled
due to a malfunction in a sensor
other than the front camera. Turn
the LTA system off, wait for a little
while, and then turn the LTA system
back on.
●“LTA Unavailable at Current
Speed”
The function cannot be used as the
vehicle speed exceeds the LTA
operation range. Drive slower.
■Customization
Function settings can be changed.
(Customizable features: P.521)

2614-5. Using the driving support systems
4
Driving
HIGHLANDER_UWhen the turn signal lever is operated and your vehicle moves to an over-
taking lane while driving at 50 mph (
80 km/h) or more, the vehicle will accel-
erate to help to overtake a passing vehicle.
The system’s identification of what is an overtaking lane may be determined
solely based on the location of the steering wheel in the vehicle (left side
driver position versus right side driver position.) If the vehicle is driven to a
region where the overtaking lane is on a different side from where the vehi-
cle is normally driven, the vehicle may accelerate when the turn signal lever
is operated in the opposite direction to the overtaking lane (e.g., if the driver
normally operates the vehicle in a region where the overtaking lane is to the
right but then drives to a region where the overtaking lane is to the left, the
vehicle may accelerate when the ri ght turn signal is activated).
Example of acceleration
When there are no longer any preceding vehicles driving slower
than the set speed
The system accelerates until the set speed is reached. The system then
returns to constant speed cruising.
1 Press the cruise control main
switch to activate the cruise
control.
Dynamic radar cruise control indi-
cator will come on and a message
will be displayed on the multi-infor-
mation display. Press the switch
again to deactivate the cruise con-
trol.
If the cruise control main switch is
pressed and held for 1.5 seconds
or more, the system turns on in
constant speed control mode. (
 P.265)
2 Accelerate or decelerate,
with accelerator pedal opera-
tion, to the desired vehicle
speed (at or above approxi-
mately 20 mph [30 km/h])
and press the “-SET” switch
to set the speed.
Cruise control “SET” indicator will
come on.
The vehicle speed at the moment
the switch is released becomes the
Setting the vehicle speed
(vehicle-to-vehicle dis-
tance control mode)