warning TOYOTA MIRAI 2022 Owners Manual

2155-5. Using the driving support systems
Owners Manual_USA_M62084_en
5
Driving
■Enabling/disabling the pre-
collision system
The pre-collision system can be
enabled/disabled on
( P.498) of the multi-informa-
tion 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.
WARNING

2165-5. Using the driving support systems
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“Pre-Collision System OFF”
■Changing the pre-collision
warning timing
The pre-collision warning timing
can be changed on
( P.498) of the multi-informa-
tion display.
The warning timing setting is
retained when the power switch is
turned off. However , if the pre-colli-
sion system is disabled and re-
enabled, the operation timing will
return to the default setting (mid-
dle).
If the pre-collision warning tim-
ing is changed, emergency
steering assist timing will also
be changed accordingly.
If late is selected, emergency
steering assist would not oper-
ate in case of an emergency.
1 Early
2 Middle
This is the default setting.
3Late
■Operational conditions for e ach pre-collision function
The pre-collision syst em is enabled and the system determines t hat the pos-
sibility of a frontal c ollision with a detected object is high.
The system may not operate in the following situations:
• If a 12-volt battery terminal has been di sconnected and reconn ected and
then the vehicle has not been dr iven for a certain amount of time
• If the shift position is in R
• When the VSC OFF indicator is illuminated (only the pre-collision warning
function will be operational)
The operation speeds and operati on cancelation for each function is listed
below.

2175-5. Using the driving support systems
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Driving
●Pre-collision warning
While the pre-collision warning function is operating, if the steering wheel is
operated heavily or suddenly, the pre-collis ion warning may be canceled.
●Pre-collision brake assist
●Pre-collision braking
If either of the following occur while the pre-collision braking function is oper-
ating, it will be canceled:
• The accelerator pedal is depressed strongly.
• The steering wheel is tur ned sharply or abruptly.
Detectable objectsVehicle speedRelative speed between
your vehicle and object
Preceding and stopped
vehiclesApprox. 7 to 110 mph
(10 to 180 km/h)Approx. 7 to 110 mph
(10 to 180 km/h)
Oncoming vehiclesApprox. 7 to 110 mph
(10 to 180 km/h)Approx. 13 to 110 mph
(20 to 180 km/h)
Bicyclists and pedestri-
ansApprox. 7 to 50 mph (10
to 80 km/h)Approx. 7 to 50 mph (10
to 80 km/h)
Detectable objectsVehicle speedRelative speed between your vehicle and object
Preceding and stopped
vehiclesApprox. 20 to 110 mph
(30 to 180 km/h)Approx. 20 to 110 mph
(30 to 180 km/h)
Bicyclists and pedestri-
ansApprox. 20 to 50 mph
(30 to 80 km/h)Approx. 20 to 50 mph
(30 to 80 km/h)
Detectable objectsVehicle speedRelative speed between your vehicle and object
Preceding and stopped
vehiclesApprox. 7 to 110 mph
(10 to 180 km/h)Approx. 7 to 110 mph
(10 to 180 km/h)
Oncoming vehiclesApprox. 7 to 110 mph
(10 to 180 km/h)Approx. 13 to 110 mph
(20 to 180 km/h)
Bicyclists and pedestri-
ansApprox. 7 to 50 mph (10
to 80 km/h)Approx. 7 to 50 mph (10
to 80 km/h)

2185-5. Using the driving support systems
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●Emergency steering assist
When the turn signal lights are flashing, emergency steering as sist will not
operate in case of an emergency.
If any of the following occur wh ile the emergency steering assi st function is
operating, it will be canceled:
• The accelerator pedal is depressed strongly.
• The steering wheel is tur ned 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 on coming vehicles does not work.
●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 on coming 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 sur- rounding brightness and the motion,
posture, and angle of the detected
object, preventing the system from
operating properly. (
P.220)
The illustration shows an image of
Detectable objectsVehicle speedRelative speed between
your vehicle and object
Preceding and stopped vehicles, bicyclists and pedestriansApprox. 25 to 50 mph (40 to 80 km/h)Approx. 25 to 50 mph (40 to 80 km/h)
Detect-able
objects
Vehicle speedOncoming vehicle speedRelative speed
between your vehi- cle and object
Oncoming vehiclesApprox. 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)
Pedestri- ansApprox. 7 to 15 mph (10 to 25 km/h)-Approx. 7 to 15 mph (10 to 25 km/h)
Detect-able
objects
Vehicle speedOncoming vehicle speedRelative speed
between your vehi- cle and object
Oncoming vehiclesApprox. 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)
Pedestri- ansApprox. 7 to 15 mph (10 to 25 km/h)-Approx. 7 to 15 mph (10 to 25 km/h)

2235-5. Using the driving support systems
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Driving
pre-collision brake assist and pre-
collision braking functions are also
disabled.
●The PCS warning lig ht will turn on
and “VSC Turned OFF Pre-Colli-
sion Brake System Unavailable”
will be displayed on the multi-
information display.
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 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

2245-5. Using the driving support systems
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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 p ressure is low.
●During emergency towing.
■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 gr ille 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.

2255-5. Using the driving support systems
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Driving
WARNING
●When the follow-up cruising dis-
play is displayed ( P.229) and
the preceding vehicle changes
lanes. (Your vehicle may follow
the preceding vehicle and also
change lanes.)
●When the follow-up cruising dis-
play is displayed ( P.229) and
the preceding vehicle is sway-
ing. (Your vehicle may sway
accordingly and depart from the
lane.)
●When the follow-up cruising dis-
play is displayed ( P.229) 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.229) and
the preceding 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 mistaken for white (yellow)
lines are present 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.

2265-5. Using the driving support systems
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WARNING
●The vehicle is driven in an area
without white (yellow) lines,
such as in front of a tollgate or
checkpoint, or at an intersec-
tion, 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 li nes 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 sur-
face 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 h eadlights 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 wind-
ing 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 pres-
sure.
●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 headlight is dim due to
its lens being dir ty 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 intersec-
tion.
●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.
●The vehicle is b eing driven at
extremely high speeds.

2275-5. Using the driving support systems
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Driving
■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 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 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 e ven 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

2285-5. Using the driving support systems
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■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 d ifficult 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.