display TOYOTA YARIS 2022 Repair Manual

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4-5. Using the driving support systems
●In the following situations, if the situation has changed (or the vehicle has been
driven for some time) and the normal operating conditions are d etected, the mes- sage will disappear and the system will become operational.
If the message does not disappear, contact any authorized Toyot a retailer or Toyota
authorized repairer, or any reliable repairer.
• When the temperature around the radar sensor is outside of the operational range,
such as when the vehicle is in the sun or in an extremely cold environment • When the front camera cannot detect objects in front of the ve hicle, such as when driving in the dark, snow, or fog, or when bright lights are sh ining into the front
camera • Depending on the conditions in the vicinity of the vehicle, th e radar may judge the surrounding environment can not be properly recognized. In that case, “Pre-Colli-
sion System Unavailable See Owner’s Manual” is displayed.

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4-5. Using the driving support systems
Driving
*: If equipped
The system can detect the follow-
ing (The detectable objects differs
depending on the function.):
 Vehicles
 Bicyclists
 Pedestrians
■Pre-collision warning
When the system determines that
the possibility of a frontal collision is
high, a buzzer will sound and a
warning message will be displayed
on the multi-information display to
urge the driver to take evasive
action.
■Pre-collision brake assist
When the system determines that
the possibility of a frontal collision is
high, the system applies greater
braking force in relation to how
strongly the brake pedal is
depressed.
■Pre-collision braking
If the system determines that the
possibility of a frontal collision is
extremely high, the brakes are
automatically applied to help avoid
the collision or reduce the impact of
the collision.
■Emergency steering assist
If the system determines that the
possibility of a collision with a
pedestrian is high and that there is
sufficient space for the vehicle to be
PCS (Pre-Collision Sys-
tem)*
The pre-collision system uses
a radar sensor and front cam-
era to detect objects ( P.209)
in front of the vehicle. When
the system determines that the
possibility of a frontal collision
with an object is high, a warn-
ing operates to urge the driver
to take evasive action and the
potential brake pressure is
increased to he lp the driver
avoid the collision. If the sys-
tem determines that the possi-
bility of a frontal collision with
an object is extremely high, the
brakes are automatically
applied to help avoid the colli-
sion or help reduce the impact
of the collision.
The pre-collision system can be
disabled/enabled and the warn-
ing timing can be changed.
( P.212)
Detectable objects
System functions

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4-5. Using the driving support systems
■Enabling/disabling the pre-col-
lision system
The pre-collision system can be
enabled/disabled on ( P.431)
of the multi-information display.
The system is automatically enabled
each time the power switch is turned to
ON.
If the system is disabled, the PCS
warning light will turn on and a
message will be displayed on the
multi-information display.
■Changing the pre-collision
warning timing
The pre-collision warning timing
can be changed on ( P.431) of
the multi-information display.
The warning timing setting is retained
when the power switch is turned off.
However, if the pre-collision system is
disabled and re-enabled, the operation
WARNING
■When to disable the pre-colli- sion system
In the following situations, disable the system, as it may not operate prop-erly, possibly leading to an accident
resulting in death or serious injury:
●When the vehicle is being towed
●When your vehicle is towing another vehicle
●When transporting the vehicle via truck, boat, train or similar means of
transportation
●When the vehicle is raised on a lift
with the hybrid system on and the tires are allowed to rotate freely
●When inspecting the vehicle using a drum tester such as a chassis dynamometer or speedometer tes-
ter, or when using an on vehicle wheel balancer
●When a strong impact is applied to the front bumper or front grille, due to an accident or other reasons
●If the vehicle cannot be driven in a stable manner, such as when the
vehicle has been in an accident or is malfunctioning
●When the vehicle is driven in a sporty manner or off-road
●When the tires are not properly inflated
●When the tires are very worn
●When tires of a size other than
specified are installed
●When tire chains are installed
●When a compact spare tire or an emergency tire puncture repair kit is
used
●If equipment (snow plow, etc.) that may obstruct the radar sensor or front camera is temporarily installed
to the vehicle
Changing settings of the
pre-collision system

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4-5. Using the driving support systems
Driving
• 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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4-5. Using the driving support systems
Driving
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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4-5. Using the driving support systems
Driving
■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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4-5. Using the driving support systems
Operation display of steering
wheel operation support
Displayed when the multi-information
display is switched to the driving sup-
port system information screen.
Indicates that steering wheel assis-
tance of the steering assist function or
lane centering function is operating.
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 displayed:
Indicates that steering wheel assist of
the steering assist function is operating.
Both outer sides of the lane are flash-
ing: Alerts the driver that their input is
necessary to stay in the center of the
lane (lane centering function).
Follow-up cruising display
Displayed when the multi-information
display is switched to the driving sup-
port system information screen.
Indicates that steering assist of the lane
centering function is operating by moni-
toring the position of a preceding vehi-
cle.
When the follow-up cruising display is
displayed, if the preceding vehicle
moves, your vehicle may move in the
same way. Always pay careful attention
to your surroundings and operate the
steering wheel as necessary to correct
the path of the vehicle and ensure
safety.
Lane departure alert function
display
Displayed when the multi-information
display is switched to the driving sup-
port system information screen.
Inside of displayed lines is white
Indicates that the system is recog-
nizing white (yellow) lines or a
course*. When the vehicle departs
from its lane, the white line dis-
played 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 temporarily can-
celed.
*: Boundary between asphalt and the
side of the road, such as grass, soil,
or a curb
■Operation conditions of each func-
tion
●Lane departure alert function
This function operates when all of the
following conditions are met.

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4-5. Using the driving support systems
Driving
• LTA is turned on.
• Vehicle speed is approximately 50
km/h (32 mph) 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 oper-
ate 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 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.229)*1: The function operates even if the
vehicle speed is less than approxi-
mately 50 km/h (32 mph) 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 deceler- ated by a fixed amount or more.
• Steering wheel is not operated with a steering force level suitable for chang-ing lanes.
• ABS, VSC, TRC and PCS are not operating.• TRC or VSC is not turned off.
• Hands off steering wheel warning is not displayed. ( P.228)
●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.431) • 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.229)
●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 is set to “ON”
( P.431) • This function recognizes white (yel- low) lane lines or the position of a pre-
ceding vehicle (except when the preceding vehicle is small, such as a motorcycle).
• The dynamic radar cruise control with full-speed range is operating in vehi-cle-to-vehicle distance control mode.
• Width of traffic lane is approximately 3 to 4 m (10 to 13 ft.).• Turn signal lever is not operated.
• Vehicle is not being driven around a sharp curve.• No system malfunctions are detected.
( P.229) • Vehicle does not accelerate or decel-erate by a fixed amount or more.
• Steering wheel is not operated with a steering force level suitable for chang-ing lanes.
• ABS, VSC, TRC and PCS are not operating.• TRC or VSC is not turned off.
• Hands off steering wheel warning is not displayed. ( P.228) • The vehicle is being driven in the
center of a lane. • Steering assist function is not operat-ing.
■Temporary cancelation of functions
●When operation conditions are no lon-ger met, a function may be temporar-
ily canceled. However, when the operation conditions are met again, operation of the function is automati-

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4-5. Using the driving support systems
cally restored. ( P.226)
●If the operation conditions (P.226) are no longer met while the lane cen-
tering function is operating, the steer- ing wheel may vibrate and the buzzer may sound to indicate that the func-
tion has been temporarily canceled. However, if the alert types customiza-tion setting is set to steering wheel
vibration, the system will notify the driver by vibrating the steering wheel instead of sounding the buzzer.
■Steering assist function/lane cen-
tering function
●Depending on the vehicle speed, lane
departure situation, road conditions, etc., the driver may not feel the func-tion is operating or the function may
not operate 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.
●Vehicle with BSM: It may not be possi-
ble for the system to determine if there is a danger of a collision with a vehicle in an adjacent lane.
●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
■Hands off steering wheel warning
In the following situations, a warning message urging the driver to hold the steering wheel and the symbol shown in
the illustration are displayed on the
multi-information display to warn the driver. The warning stops when the sys-tem 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 that the driver is driving without holding the
steering wheel while the system 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 canceled.
This warning also operates in the same
way when the driver continuously oper-
ates the steering wheel only a small
amount.
The buzzer also sounds even if the alert
type is set to steering wheel vibration.
●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
operate. Also, if the system determines
that the vehicle is driving around a
curve, warnings will occur earlier than
during straight-lane driving.
●When the system determines that the
driver is driving without holding the steering wheel while the steering wheel assist of the steering assist
function is operating.
If the driver continues to keep their
hands off of the steering wheel and the

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4-5. Using the driving support systems
Driving
steering wheel assist is operating, the
buzzer sounds and the driver is warned.
Each time the buzzer sounds, the con-
tinuing time of the buzzer becomes lon-
ger.
The buzzer also sounds even if the alert
type is set to steering wheel vibration.
■Vehicle sway warning function
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 simultane-ously displayed on the multi-information
display.
Depending on the vehicle and road con-
ditions, 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, follow the appropriate trouble-shooting 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 prop-
erly. Have the vehicle inspected by any
authorized Toyota retailer or Toyota
authorized repairer, or any reliable
repairer.
●“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 opera-
tion range. Drive slower.
■Customization
Function settings can be changed. (Customizable features: P.431)