light TOYOTA YARIS 2022 Manual Online

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4-5. Using the driving support systems
Driving
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 pedestrian has already exited the path of your vehicle
• While making a right/left turn, closely in front of an oncoming vehicle or a crossing pedestrian
• While making a right/left turn, when an oncoming vehicle or a crossing pedestrian 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
• While steering into the direction of
oncoming traffic
■Situations in which the system may not operate properly
●In some situations such as the follow-ing, an object may not be detected by the radar sensor and front camera,
preventing 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
detectable 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 hidden 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 oncom-ing traffic, shines directly into the front
camera • 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

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• While making a right/left turn, when a
pedestrian approaches from behind or side of your vehicle
●In addition to the above, in some situ-ations, such as the following, the emergency 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 a pedestrian is detected near the centerline of the vehicle
• When the target is too close • When there is insufficient safe or unobstructed space for the vehicle to
be steered into • If oncoming vehicle is present• If VSC function is operating
●In some situations such as the follow-ing, sufficient braking force or steering
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 main-
tained (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.278), 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.

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*: If equipped
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 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 camera. 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
LTA (Lane Tracing
Assist)*
Summary of functions
WARNING
■Before using LTA system
●Do not rely solely upon the LTA sys-
tem. The LTA 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 cor-
rect 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 driv-
ing 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. Fail-ure 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-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 con-
struction work.
●Vehicle is driven in a construction
zone.
●A spare tire, tire chains, etc., are
equipped.
●When the tires have been exces-
sively worn, or when the tire infla- tion pressure is low.

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WARNING
●When your vehicle is towing a trailer (vehicles with towing pack-
ages) or during emergency towing
■Preventing LTA system malfunc-
tions 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, kan-
garoo bar, etc.).
●If your windshield needs repairs,
contact any authorized Toyota retailer or Toyota authorized repairer, or any reliable repairer.
■Conditions in which functions may not operate properly
In the following situations, the func- tions 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.
●When the follow-up cruising dis-play is displayed ( P.225) and the preceding vehicle changes lanes.
(Your vehicle may follow the pre- ceding vehicle and also change lanes.)
●When the follow-up cruising dis-play is displayed ( P.225) and the
preceding vehicle is swaying. (Your vehicle may sway accordingly and depart from the lane.)
●When the follow-up cruising dis-play is displayed ( P.225) and the
preceding vehicle departs from its lane. (Your vehicle may follow the preceding vehicle and depart from
the lane.)
●When the follow-up cruising dis-
play is displayed ( P.225) and the preceding vehicle is being driven extremely close to the left/right lane
line. (Your vehicle may follow the preceding vehicle and depart from the lane.)
●Vehicle is being driven around a sharp curve.
●Objects or patterns that could be mistaken for white (yellow) lines are
present on the side of the road (guardrails, reflective poles, etc.).

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WARNING
●Vehicle is driven where the road diverges, merges, etc.
●Repair marks of asphalt, white (yel-low) 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 intersection, etc.
●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 sur-face that is wet due to rain, pud-dles, 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 sud-denly, 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 nar-row or wide.
●The vehicle is extremely tilted due to carrying heavy luggage or having improper tire pressure.
●The distance to the preceding vehi-cle is extremely short.
●The vehicle is moving up and down a large amount due to road condi-
tions during driving (poor roads or road seams).

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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 dis-
played on the multi-information dis-
play, and either a warning buzzer
will sound or the steering 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.
Vehicle with BSM: When the system
determines that the vehicle might
depart from its lane and that the possi-
bility 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
■Steering assist function
When the system determines that
the vehicle might depart from its
lane or course*, the system pro-
vides assistance as necessary 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 system
determines that the vehicle might
depart from its lane and that the possi-
bility 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
WARNING
●When driving in a tunnel or at night with the headlights off or when a
headlight is dim due to its lens being dirty or it being misaligned.
●The vehicle is struck by a cross-wind.
●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, man-ufacturer, brand or tread pattern are used.
●When tires of a size other than specified are installed.
●Snow tires, etc., are equipped.
●The vehicle is being driven at extremely high speeds.
Functions included in LTA
system

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■Turning the lane centering
function ON/OFF
Press the LTA switch.
The lane centering function will change
between ON/OFF each time the switch
is pressed.
The current setting will be displayed on
the multi-information display.
Lane centering function ON
“LTA Steering Assist Active Lane
Centering Active”
Lane centering function OFF
“LTA Steering Assist Active”
■Tu r n i n g t h e LTA s y s t e m O F F
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 sys-
tem on.
The LTA is turned ON each time the
power switch is turned to ON.
However, the lane centering function
keeps either the ON/OFF state prior to
the power switch being turned OFF.
LTA indicator
The illumination condition of the indica-
tor 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 func-
tion or lane centering function is operat-
ing.
Flashing in orange: Lane departure
alert function is operating.
LTA system setting
Indications on multi-infor-
mation display

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This mode employs a radar to detect the presence of vehicles up to approx-
imately 100 m (328 ft.) ahead, d etermines the current vehicle-to-vehicle fol-
lowing distance, and operates to maintain a suitable following distance from
the vehicle ahead. The desired vehicle-to-vehicle distance can also be set
by operating the vehicle-to-vehicle distance switch.
When driving on downhill slopes, the vehicle-to-vehicle distanc e may become
shorter.
Example of constant speed cruising
When there are no vehicles ahead
The vehicle travels at the speed set by the driver.
Example of deceleration cruising and follow-up cruising
When a preceding vehicle driving slower than the set speed appe ars
When a vehicle is detected running ahead of you, the system automatically deceler-
ates your vehicle. When a greater reduction in vehicle speed is necessary, the sys-
tem applies the brakes (the stop lights will come on at this ti me). The system will
respond to changes in the speed of the vehicle ahead in order t o maintain the vehi-
cle-to-vehicle distance set by the driver. Approach warning war ns you when the sys-
tem cannot decelerate sufficiently to prevent your vehicle from closing in on the
vehicle ahead.
When the vehicle ahead of you stops, your vehicle will also sto p (vehicle is stopped
by system control). After the vehicle ahead starts off, pressin g the “+RES” switch or
depressing the accelerator pedal (start-off operation) will res ume follow-up cruising.
If the start-off operation is not performed, system control con tinues to keep your
vehicle stopped.
Driving in vehicle-to-vehicle distance control mode

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Press and hold the “-SET” switch.
Dynamic Radar Cruise Control with
Road Sign Assist can be
enabled/disabled in on the
multi-information display. ( P.431)
When the Dynamic Radar Cruise
Control with Road Sign Assist is
operating, while driving down a hill,
the vehicle speed may exceed the
set speed.In this case, the dis-
played set vehicle speed will be
highlighted and a buzzer will sound
to alert the driver.
■Dynamic radar cruise control with
full-speed range can be set when
●The shift lever is in D.
●The desired set speed can be set when the vehicle speed is approxi-
mately 30 km/h (20 mph) or more. (However, when the vehicle speed is set while driving at below approxi-
mately 30 km/h [20 mph], the set speed will be set to approximately 30 km/h [20 mph].)
■Accelerating after setting the vehi-
cle speed
The vehicle can accelerate by operating
the accelerator pedal. After accelerat- ing, the set speed resumes. However, during vehicle-to-vehicle distance con-
trol mode, the vehicle speed may decrease below the set speed in order to maintain the distance to the preceding
vehicle.
■When the vehicle stops while fol-
low-up cruising
●Pressing the “+RES” switch while the
vehicle ahead stops will resume fol- low-up cruising if the vehicle ahead starts off within approximately 3 sec-
onds after the switch is pressed.
●If the vehicle ahead starts off within 3
seconds after your vehicle stops, fol- low-up cruising will be resumed.
■Automatic cancelation of vehicle-to-vehicle distance control mode
Vehicle-to-vehicle distance control mode is automatically canceled in the follow-ing situations.
●VSC is activated.
●TRC is activated for a period of time.
●When the VSC or TRC system is
turned off.
●The sensor cannot detect correctly
because it is covered in some way.
●When the brake control or output
restriction control of a driving support system operates. (For example: Pre-Collision System, Drive-Start Control)
●The parking brake is operated.
●The vehicle is stopped by system con-trol on a steep incline.
●The following are detected when the vehicle has been stopped by system control:
• The driver is not wearing a seat belt. • The driver’s door is opened.• The vehicle has been stopped for
about 3 minutes
If vehicle-to-vehicle distance control mode is automatically canceled for any
reasons other than the above, there may be a malfunction in the system. Contact any authorized Toyota retailer
or Toyota authorized repairer, or any reli- able repairer.
■Automatic cancelation of constant speed control mode
Constant speed control mode is auto- matically canceled in the following situa-tions:
Enabling/Disabling the
Dynamic Radar Cruise Con-
trol with Road Sign Assist (if
equipped)

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*3: Displayed when system detects driv-
ing on ramp way.
In the following situations, the RSA
system will notify the driver.
 When the vehicle speed exceeds
the speed notification threshold
of the speed limit sign displayed,
the sign display will be empha-
sized and a buzzer will sound.
 When the RSA system recog-
nizes a no-entry sign and detects
that the vehicle has entered a
no-entry area based on the map
information of the navigation sys-
tem, the no-entry sign flashes
and a buzzer will sound. (For
vehicles with 7-inch/8-inch dis-
play navigation system)
 If it is detected that your vehicle
is overtaking when a no overtak-
ing sign is displayed on the multi-
information display, the dis-
played sign will flash and a
buzzer will sound.
Depending on the situation, traffic
environment (traffic direction,
speed unit) may be detected incor-
rectly and a notification function
may not operate properly.
■Setting procedure
1 Press / (vertical display) or
/ (horizontal display) of the
meter control switches and select
.
2 Press / (vertical display) or
/ (horizontal display) of the
meter control switches and select
, then press .
■Automatic turn-off of RSA sign dis-
play
One or more signs automatically turn off in the following situations.
●No sign has been recognized for a certain distance.
●The road changes due to a left or right turn, etc.
■Conditions in which the function
may not operate or detect correctly
In the following situations, RSA does not operate normally and may not recognize
signs, display the incorrect sign, etc. However, this does not indicate a mal-function.
●The front camera is misaligned due to a strong impact being applied to the
sensor, etc.
●Dirt, snow, stickers, etc., are on the
windshield near the front camera.
●In inclement weather such as heavy
rain, fog, snow or sand storms.
●Light from an oncoming vehicle, the
sun, etc., enters the front camera.
●The sign is dirty, faded, tilted or bent.
●The contrast of electronic sign is low.
●All or part of the sign is hidden by the leaves of a tree, a pole, etc.
●The sign is only visible to the front camera for a short amount of time.
●The driving scene (turning, lane change, etc.) is judged incorrectly.
●If a sign not appropriate for the cur-rently traveled lane, but the sign exists
directly after a freeway branches, or in an adjacent lane just before merging.
●S t ic ke r s a r e a t t ac he d to t he r e ar o f th e preceding vehicle.
Notification function