Lexus ES300h (2023 year). Manual in english — page 11
186
4-5. Using the driving support systems
If the pre-collision warning timing is
changed, emergency steering assist tim-
ing will also be changed accordingly.
If late is selected, emergency steering
assist would not operate in case of an
emergency.
1
Early
2
Middle
This is the default setting.
3
Late
■
Operational conditions for each pre-collision function
The pre-collision system is enabled and the system determines that the possibility of a fron-
tal collision with a detected object is high.
The system may not operate in the following situations:
• If a 12-volt battery terminal has been disconnected and reconnected and then the vehicle
has not been driven for a certain amount of time
• If the shift lever is in R
• When the VSC OFF indicator is illuminated (only the pre-collision warning function will
be operational)
The operation speeds and operation cancellation for each function is listed below.
●
Pre-collision warning
While the pre-collision warning function is operating, if the steering wheel is operated heav-
ily or suddenly, the pre-collision warning may be cancelled.
Detectable objects
Vehicle speed
Relative speed between your
vehicle and object
Preceding and stopped vehi-
cles
Approx. 7 to 110 mph (10 to
180 km/h)
Approx. 7 to 110 mph (10 to
180 km/h)
Oncoming vehicles
Approx. 7 to 110 mph (10 to
180 km/h)
Approx. 13 to 110 mph (20 to
180 km/h)
Bicyclists and pedestrians
Approx. 7 to 50 mph (10 to
80 km/h)
Approx. 7 to 50 mph (10 to
80 km/h)
187
4-5. Using the driving support systems
4
Driving
●
Pre-collision brake assist
●
Pre-collision braking
If either of the following occur while the pre-collision braking function is operating, it will be
canceled:
• The accelerator pedal is depressed strongly.
• The steering wheel is turned sharply or abruptly.
●
Emergency steering assist
When the turn signal lights are flashing, emergency steering assist will not operate in case of
an emergency.
If any of the following occur while the emergency steering assist function is operating, it will
be canceled:
• The accelerator pedal is depressed strongly.
• The steering wheel is turned sharply or abruptly.
• The brake pedal is depressed.
●
Intersection right/left turn assistance (pre-collision warning)
When the turn signal lights are not flashing, support for turning left or right at an intersection
which targets oncoming vehicles does not work.
Detectable objects
Vehicle speed
Relative speed between your
vehicle and object
Preceding and stopped vehi-
cles
Approx. 20 to 110 mph (30
to 180 km/h)
Approx. 20 to 110 mph (30
to 180 km/h)
Bicyclists and pedestrians
Approx. 20 to 50 mph (30
to 80 km/h)
Approx. 20 to 50 mph (30
to 80 km/h)
Detectable objects
Vehicle speed
Relative speed between your
vehicle and object
Preceding and stopped vehi-
cles
Approx. 7 to 110 mph (10 to
180 km/h)
Approx. 7 to 110 mph (10 to
180 km/h)
Oncoming vehicles
Approx. 7 to 110 mph (10 to
180 km/h)
Approx. 13 to 110 mph (20 to
180 km/h)
Bicyclists and pedestrians
Approx. 7 to 50 mph (10 to
80 km/h)
Approx. 7 to 50 mph (10 to
80 km/h)
Detectable objects
Vehicle speed
Relative speed between your
vehicle and object
Preceding and stopped vehi-
cles, bicyclists and pedestri-
ans
Approx. 25 to 50 mph (40
to 80 km/h)
Approx. 25 to 50 mph (40
to 80 km/h)
188
4-5. Using the driving support systems
●
Intersection right/left turn assistance (pre-collision braking)
When the turn signal lights are not flashing, support for turning left or right at an intersection
which targets oncoming vehicles does not work.
■
Object detection function
The system detects objects based on their
size, profile, motion, etc. However, an
object may not be detected depending on
the surrounding brightness and the motion,
posture, and angle of the detected object,
preventing the system from operating
properly. (
an image of detectable objects.
■
Conditions under which the system may
operate even if there is no possibility of a
collision
●
In some situations such as the following,
the system may determine that there is a
possibility of a frontal collision and oper-
ate.
• When passing a detectable object, etc.
• When changing lanes while overtaking a
detectable object, etc.
• When approaching a detectable object
in an adjacent lane or on the roadside,
such as when changing the course of
travel or driving on a winding road
• When rapidly closing on a detectable
object, etc.
• When approaching objects on the road-
side, such as detectable objects, guard-
rails, utility poles, trees, or walls
• When there is a detectable object or
other object by the roadside at the
entrance of a curve
Detectable objects
Vehicle speed
Oncoming vehicle
speed
Relative speed
between your vehi-
cle and object
Oncoming vehicles
Approx. 7 to 15 mph
(10 to 25 km/h)
Approx. 20 to 35
mph (30 to 55 km/h)
Approx. 25 to 50
mph (40 to 80
km/h)
Pedestrians
Approx. 7 to 15 mph
(10 to 25 km/h)
Approx. 7 to 15 mph
(10 to 25 km/h)
Detectable objects
Vehicle speed
Oncoming vehicle
speed
Relative speed
between your vehi-
cle and object
Oncoming vehicles
Approx. 10 to 15 mph
(15 to 25 km/h)
Approx. 20 to 28
mph (30 to 45 km/h)
Approx. 28 to 43
mph (45 to 70 km/h)
Pedestrians
Approx. 7 to 15 mph
(10 to 25 km/h)
Approx. 7 to 15 mph
(10 to 25 km/h)
189
4-5. Using the driving support systems
4
Driving
• When there are patterns or paint in front
of your vehicle that may be mistaken for a
detectable object
• When the front of your vehicle is hit by
water, snow, dust, etc.
• When overtaking a detectable object
that is changing lanes or making a
right/left turn
• When passing a detectable object in an
oncoming lane that is stopped to make a
right/left turn
• When a detectable object approaches
very close and then stops before entering
the path of your vehicle
• If the front of your vehicle is raised or low-
ered, such as when on an uneven or
undulating road surface
• When driving on a road surrounded by a
structure, such as in a tunnel or on an iron
bridge
• When there is a metal object (manhole
cover, steel plate, etc.), steps, or a protru-
sion in front of your vehicle
• When passing under an object (road
sign, billboard, etc.)
• When approaching an electric toll gate
barrier, parking area barrier, or other
barrier that opens and closes
• When using an automatic car wash
• When driving through or under objects
that may contact your vehicle, such as
thick grass, tree branches, or a banner
• When driving through steam or smoke
• When driving near an object that reflects
radio waves, such as a large truck or
guardrail
• When driving near a TV tower, broad-
casting station, electric power plant,
radar equipped vehicles, etc., or other
location where strong radio waves or
electrical noise may be present
• When there are many things which can
reflect the radio waves of the radar in the
vicinity (tunnels, truss bridges, gravel
roads, snow covered road that have
tracks, etc.)
• While making a right/left turn, when an
oncoming vehicle or a crossing pedes-
trian has already exited the path of your
vehicle
• While making a right/left turn, closely in
front of an oncoming vehicle or a cross-
ing pedestrian.
• While making a right/left turn, when an
oncoming vehicle or a crossing pedes-
trian stops before entering the path of
your vehicle
• While making a right/left turn, when an
oncoming vehicle turns right/left in front
of your vehicle
190
4-5. Using the driving support systems
• While steering into the direction of
oncoming traffic
■
Situations in which the system may not
operate properly
●
In some situations such as the following,
an object may not be detected by the
radar sensor and front camera, prevent-
ing the system from operating properly:
• When a detectable object is approaching
your vehicle
• When your vehicle or a detectable object
is wobbling
• If a detectable object makes an abrupt
maneuver (such as sudden swerving,
acceleration or deceleration)
• When your vehicle approaches a detect-
able object rapidly
• When a detectable object is not directly
in front of your vehicle
• When a detectable object is near a wall,
fence, guardrail, manhole cover, vehicle,
steel plate on the road, etc.
• When a detectable object is under a
structure
• When part of a detectable object is hid-
den by an object, such as large baggage,
an umbrella, or guardrail
• When there are many things which can
reflect the radio waves of the radar in the
vicinity (tunnels, truss bridges, gravel
roads, snow covered road that have
tracks, etc.)
• When there is an effect on the radio
waves to the radar that is installed on
another vehicle
• When multiple detectable objects are
close together
• If the sun or other light is shining directly
on a detectable object
• When a detectable object is a shade of
white and looks extremely bright
• When a detectable object appears to be
nearly the same color or brightness as its
surroundings
• If a detectable object cuts or suddenly
emerges in front of your vehicle
• When the front of your vehicle is hit by
water, snow, dust, etc.
• When a very bright light ahead, such as
the sun or the headlights of oncoming
traffic, shines directly into the front cam-
era
• When approaching the side or front of a
vehicle ahead
• If a vehicle ahead is a motorcycle
• If a vehicle ahead is narrow, such as a
personal mobility vehicle
• If a preceding vehicle has a small rear
end, such as an unloaded truck
• If a preceding vehicle has a low rear end,
such as a low bed trailer
• If a vehicle ahead has extremely high
ground clearance
• If a vehicle ahead is carrying a load which
protrudes past its rear bumper
• If a vehicle ahead is irregularly shaped,
such as a tractor or side car
• If a vehicle ahead is a child sized bicycle,
a bicycle that is carrying a large load, a
191
4-5. Using the driving support systems
4
Driving
bicycle ridden by more than one person,
or a uniquely shaped bicycle (bicycle with
a child seat, tandem bicycle, etc.)
• If a pedestrian/or the riding height of a
bicyclist ahead is shorter than approxi-
mately 3.2 ft. (1 m) or taller than approxi-
mately 6.5 ft. (2 m)
• If a pedestrian/bicyclist is wearing over-
sized clothing (a rain coat, long skirt,
etc.), making their silhouette obscure
• If a pedestrian is bending forward or
squatting or bicyclist is bending forward
• If a pedestrian/bicyclist is moving fast
• If a pedestrian is pushing a stroller,
wheelchair, bicycle or other vehicle
• When driving in inclement weather such
as heavy rain, fog, snow or a sandstorm
• When driving through steam or smoke
• When the surrounding area is dim, such
as at dawn or dusk, or while at night or in
a tunnel, making a detectable object
appear to be nearly the same color as its
surroundings
• When driving in a place where the sur-
rounding brightness changes suddenly,
such as at the entrance or exit of a tunnel
• After the hybrid system has started the
vehicle has not been driven for a certain
amount of time
• While making a left/right turn and for a
few seconds after making a left/right turn
• While driving on a curve and for a few
seconds after driving on a curve
• If your vehicle is skidding
• If the front of the vehicle is raised or low-
ered
• If the wheels are misaligned
• If a wiper blade is blocking the front cam-
era
• The vehicle is being driven at extremely
high speeds
• When driving on a hill
• If the radar sensor or front camera is mis-
aligned
• When driving in a traffic lane separated
by more than one lane where oncoming
vehicles are driving while making a
right/left turn
• When largely out of place with the oppo-
site facing targeted oncoming vehicle
during a right/left turn
• While making a right/left turn, when a
pedestrian approaches from behind or
side of your vehicle
●
In addition to the above, in some situa-
tions, such as the following, the emer-
gency steering assist may not operate.
• When the white (yellow) lane lines are
difficult to see, such as when they are
faint, diverging/merging, or a shadow is
cast upon them
• When the lane is wider or narrower than
normal
• When there is a light and dark pattern on
the road surface, such as due to road
repairs
• When the target is too close
• When there is insufficient safe or unob-
structed space for the vehicle to be
steered into
• If oncoming vehicle is present
• If VSC function is operating
●
In some situations such as the following,
sufficient braking force or steering force
may not be obtained, preventing the sys-
tem from performing properly:
• If the braking functions cannot operate to
their full extent, such as when the brake
192
4-5. Using the driving support systems
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 surface
• When the road surface has deep wheel
tracks
• When driving on a hill road
• When driving on a road that has inclines
to the left or right
■
If VSC is disabled
●
If VSC is disabled (
P.253), 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 display.
LTA (Lane Tracing Assist)
While driving on a road with clear
white (yellow) lane lines, the LTA
system warns the driver if the vehi-
cle 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 control with
full-speed range (
P.203) is oper-
ating, this system will operate the
steering wheel to maintain the vehi-
cle’s lane position.
The LTA 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
193
4-5. Using the driving support systems
4
Driving
WARNING
■
Before using LTA system
●
Do not rely solely upon the LTA sys-
tem. The LTA 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 pay-
ing 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.
■
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 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.
●
Vehicle is driven in a temporary lane
or restricted lane due to construction
work.
●
Vehicle is driven in a construction
zone.
●
A spare tire, tire chains, etc. are
equipped.
●
When the tires have been excessively
worn, or when the tire inflation pres-
sure is low.
●
During emergency towing
■
Preventing LTA 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 Lexus 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, con-
tact your Lexus dealer.
■
Conditions in which functions may
not operate properly
In the following situations, the functions
may not operate properly and the vehi-
cle 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 func-
tions.
●
When the follow-up cruising display is
displayed (
P.196) and the preced-
ing vehicle changes lanes. (Your vehi-
cle may follow the preceding vehicle
and also change lanes.)
●
When the follow-up cruising display is
displayed (
P.196) and the preced-
ing vehicle is swaying. (Your vehicle
may sway accordingly and depart from
the lane.)
194
4-5. Using the driving support systems
WARNING
●
When the follow-up cruising display is
displayed (
P.196) and the preced-
ing vehicle departs from its lane. (Your
vehicle may follow the preceding vehi-
cle and depart from the lane.)
●
When the follow-up cruising display is
displayed (
P.196) and the preced-
ing vehicle is being driven extremely
close to the left/right lane line. (Your
vehicle may follow the preceding vehi-
cle and depart from the lane.)
●
Vehicle is being driven around a sharp
curve.
●
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.
●
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 inter-
section, 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 sur-
face, 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.
195
4-5. Using the driving support systems
4
Driving
■
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 either a
warning buzzer will sound or the steer-
ing wheel will vibrate to alert the driver.
When the warning buzzer sounds or the
steering wheel vibrates, check the area
around your vehicle and carefully operate
the steering wheel to move the vehicle
back to the center of the lane.
When the system determines that the vehi-
cle 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 even if the turn
signals are operating.
*
: Boundary between asphalt and the side
of the road, such as grass, soil, or a curb
WARNING
●
Light from the headlights of an oncom-
ing 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 is affected by wind from a
vehicle driven in a nearby lane.
●
The vehicle has just changed lanes or
crossed an intersection.
●
Tires which differ by structure, manu-
facturer, brand or tread pattern are
used.
●
When tires of a size other than speci-
fied are installed.
●
Snow tires, etc. are equipped.
●
The vehicle is being driven at
extremely high speeds.
Functions included in LTA sys-
tem
196
4-5. Using the driving support systems
■
Steering assist function
When the system determines that the
vehicle might depart from its lane or
course
*
, the system provides assis-
tance as necessary by operating the
steering wheel in small amounts for a
short period of time to keep the vehicle
in its lane.
When the system determines that the vehi-
cle 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
■
Vehicle sway warning function
When the vehicle is swaying within a
lane, the warning buzzer will sound
and a message 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 provides the required assis-
tance by operating the steering wheel
to keep the vehicle in its current lane.
When dynamic radar cruise control with
full-speed range is not operating, the lane
centering function does not operate.
In situations where the white (yellow) 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.
197
4-5. Using the driving support systems
4
Driving
Press the LTA switch to turn the LTA
system on.
The LTA indicator illuminates and a mes-
sage is displayed on the multi-information
display.
Press the LTA switch again to turn the
LTA system off.
When the LTA system is turned on or off,
operation of the LTA system continues in
the same condition the next time the hybrid
system is started.
LTA indicator
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 function 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-information dis-
play is switched to the driving support sys-
tem information display.
Indicates that steering wheel assistance of
the steering assist function or lane center-
ing function is operating.
Both outer sides of the lane are displayed:
Indicates that steering wheel assist of the
lane centering function is operating.
One outer side of the lane is displayed:
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 neces-
sary to stay in the center of the lane (lane
Turning LTA system on
Indications on multi-information
display
A
B
198
4-5. Using the driving support systems
centering function).
Lane departure alert function dis-
play
Displayed when the multi-information dis-
play is switched to the driving support sys-
tem information display.
Inside of displayed lines is white
Indicates that the system is recognizing
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 rec-
ognize white (yellow) lines or a course
*
or
is temporarily canceled.
Follow-up cruising display
Displayed when the multi-information dis-
play is switched to the driving support sys-
tem information display.
Indicates that steering assist of the lane
centering function is operating by monitor-
ing the position of a preceding vehicle.
When the follow-up cruising display is dis-
played, if the preceding vehicle moves,
your vehicle may move in the same way.
Always pay careful attention to your sur-
roundings and operate the steering wheel
as necessary to correct the path of the
vehicle and ensure safety.
*
: Boundary between asphalt and the side
of the road, such as grass, soil, or a curb
■
Operation conditions of each function
●
Lane departure alert function
This function operates when all of the fol-
lowing 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 [yel-
low] line or course
*2
is recognized on
only one side, the system will operate
only for the recognized side.)
• Width of traffic lane is approximately 9.8
ft. (3 m) or more.
• Turn signal lever is not operated. (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.
(
*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 fol-
lowing 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.
C
D
199
4-5. Using the driving support systems
4
Driving
• 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 fol-
lowing conditions are met.
• Setting for “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.
(
●
Lane centering function
This function operates when all of the fol-
lowing conditions are met.
• LTA is turned on.
• Setting for “Lane Center” in
of the
multi-information display is set to “On”.
(
• This function recognizes white (yellow)
lane lines or the position of a preceding
vehicle (except when the preceding vehi-
cle is small, such as a motorcycle).
• The dynamic radar cruise control with
full-speed range is operating in vehicle-
to-vehicle distance control mode.
• Width of traffic lane is approximately 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.
(
• Vehicle does not accelerate or deceler-
ate 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.
• Hands off steering wheel warning is not
displayed. (
• The vehicle is being driven in the center
of a lane.
• Steering assist function is not operating.
■
Temporary cancelation of functions
●
When operation conditions are no lon-
ger met, a function may be temporarily
canceled. However, when the operation
conditions are met again, operation of
the function is automatically restored.
(
●
If the operation conditions (
no longer met while the lane centering
function is operating, the steering wheel
may vibrate and the buzzer may sound to
indicate that the function has been tem-
porarily canceled. However, if the “Alert”
customization setting is set to
, the
system will notify the driver by vibrating
the steering wheel instead of sounding
the buzzer.
■
Steering assist function/lane centering
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 oper-
ate at all.
●
The steering control of the function is
overridden by the driver’s steering wheel
operation.
●
Do not attempt to test the operation of
the steering assist function.
■
Lane departure alert function
●
The warning buzzer may be difficult to
hear due to external noise, audio play-
back, etc. Also, it may be difficult to feel
steering wheel vibrations due to the road
conditions, etc.
●
If the edge of the course
*
is not clear or
straight, the lane departure alert function
may not operate.
●
It may not be possible for the system to
determine if there is a danger of a colli-
sion with a vehicle in an adjacent lane.
●
Do not attempt to test the operation of
the lane departure alert function.
200
4-5. Using the driving support systems
*
: Boundary between asphalt and the side
of the road, such as grass, soil, or a curb
■
Hands off steering wheel warning
In the following situations, a warning mes-
sage urging the driver to hold the steering
wheel and the symbol shown in the illustra-
tion are displayed on the multi-information
display 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 warn-
ings.
●
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 tem-
porarily canceled. This warning also oper-
ates in the same way when the driver
continuously operates the steering wheel
only a small amount.
The buzzer also sounds even if the alert
type is set to
.
●
When the system determines that the
vehicle may deviate from the lane while
driving around a curve while the lane
centering function is operating.
Depending on the vehicle condition and
road conditions, the warning may not oper-
ate.
●
When the system determines that the
driver is driving without holding the steer-
ing wheel while the steering wheel assist
of the steering assist function is operat-
ing.
If the driver continues to keep their hands
off of the steering wheel and the steering
wheel assist is operating, the buzzer sounds
and the driver is warned. Each time the
buzzer sounds, the continuing time of the
buzzer becomes longer.
The buzzer also sounds even if the alert
type is set to
.
■
Vehicle sway warning function
When the system determines that the vehi-
cle is swaying while the vehicle sway warn-
ing 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 condi-
tions, the warning may not operate.
■
Warning message
If the following warning message is dis-
played on the multi-information display and
the LTA indicator illuminates in orange, fol-
low the appropriate troubleshooting proce-
dure. 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 Lexus
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”
201
4-5. Using the driving support systems
4
Driving
The function cannot be used as the vehicle
speed exceeds the LTA operation range.
Drive slower.
■
Customization
Function settings can be changed.
(Customizable features:
*
: If equipped
When the front camera recognizes a
sign and/or information of a sign is
RSA (Road Sign Assist)
*
The RSA system recognizes spe-
cific road signs using the front cam-
era 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 notification
buzzer.
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.
Indication on the multi-informa-
tion display
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст