2023 TOYOTA MIRAI tires

1955-2. Driving procedures
Owners Manual_USA_M62064_en
5
Driving
Make sure that the parking brake
indicator light goes off. ( P.191)
■When an inspection at your
Toyota dealer is necessary
When the brake hold standby indi-
cator (green) does not illuminate
even when the brake hold switch is
pressed with the brake hold system
operating conditions met, the sys-
tem may be malfunctioning. Have
the vehicle inspected at your Toyota
dealer.
■If “Brake Hold Malfunction
Press Brake to Deactivate Visit
Your Dealer” or “Brake Hold
Malfunction Visit Your Dealer”
is displayed on the multi-infor-
mation display
The system may be malfunctioning.
Have the vehicle inspected by your
Toyota dealer.
■Warning messages and buzzers
Warning messages and buzzers are
used to indicate a system malfunc-
tion or to inform the driver of the
need for caution. If a warning mes-
sage is shown on the multi-informa-
tion display, read the message and
follow the instructions.
■If the brake hold operated indi-
cator flashes
 P. 4 5 9
WARNING
■When the vehicle is on a
steep incline
When using the brake hold sys-
tem on a steep incline exercise
caution. The brake hold function
may not hold the vehicle in such a
situation.
■When stopped on a slippery
road
The system cannot stop the vehi-
cle when the gripping ability of the
tires has been exceeded. Do not
use the system w hen stopped on
a slippery road.
NOTICE
■When parking the vehicle
The brake hold system is not
designed for use when parking
the vehicle for a long period of
time. Turning the power switch off
while the system is holding the
brake may release the brake,
which would cause the vehicle to
move. When operating the power
switch, depress the brake pedal,
shift the shift position to P and set
the parking brake.

1965-2. Driving procedures
Owners Manual_USA_M62064_en
*: If equipped
■Customization
Some functions can be customized.
(  P.519)
■Operating conditions
When the driving mode select
switch is not in Eco drive mode.
■Temporary cancelation of the
ASC system functions
The ASC system may be temporar-
ily canceled depending on the driv-
ing conditions, such as when the
tires slip due to sudden accelera-
tion.
The tones may not sound if the driv-
ing mode is switched continuously
in short time periods.
When the H2O switch pressed
while the “READY” indicator is
on, the vehicle purges water.
When the switch is pressed
again, purging stops.
System purging and purging com-
plete messages are displayed in
the multi-information display.
■Water release function during
cold weather
In the following cases, the fuel cell
system automatic drainage may not
operate. It may not be possible to
start the fuel cell system due to the
fuel cell stack, hyd rogen pipes, etc.,
being frozen.
●When transporting or towing the
ASC (Active Sound
Control)*
The ASC is a system that
conveys the operating con-
ditions, such as accelera-
tion and deceleration of the
vehicle, with sounds to the
driver. The vehicle’s reac-
tion with regards to the
driver’s acceleration and
brake operations are con-
veyed with sound. The
respective tone changes for
normal mode and sport
mode. ( P.320)
Water release (H2O
switch)
When the fuel cell system is
stopped, water is automati-
cally purged from the tail-
pipe.
To minimize water accumu-
lation at parking garages,
etc., purge can be done
manually before parking.
H2O switch

2295-5. Using the driving support systems
Owners Manual_USA_M62064_en
5
Driving
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 lowered
• If the wheels are misaligned
• If a wiper blade is blocking the front camera
• The vehicle is being driven at extremely high speeds
• When driving on a hill
• If the radar sensor or front camera
is misaligned
• When driving in a traffic lane sep-
arated by more t han one lane
where oncoming vehicles are driv-
ing while making a right/left turn
• When largely out of place with the opposite facing targeted oncom-
ing 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
situations, 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 nar-
rower than normal
• When there is a light and dark pat- tern on the road surface, such as
due to road repairs
• 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 fol-
lowing, sufficien t 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, ext remely hot, or
wet
• If the vehicle is not properly main- tained (brakes or tires are exces-
sively worn, imprope r 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

2315-5. Using the driving support systems
Owners Manual_USA_M62064_en
5
Driving
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.

2335-5. Using the driving support systems
Owners Manual_USA_M62064_en
5
Driving
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 (yello w) 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.

2615-5. Using the driving support systems
Owners Manual_USA_M62064_en
5
Driving
secutive steep inclines, such as
hills, dips in the road, etc.
• When driving on roads with sharp
bends, consecutive curves, or
uneven surfaces
• When vehicle lanes are wide, or
when driving on the edge of a
lane, and the vehicle in an adja-
cent lane is far away from your
vehicle
• When an accessory (such as a bicycle carrier) is installed to the
rear of the vehicle
• When there is a significant differ- ence in height between your vehi-
cle and the vehicle that enters the
detection area
• Immediately after the Blind Spot
Monitor is turned on
●Instances of the Blind Spot Moni-
tor unnecessarily d etecting a vehi-
cle and/or object may increase in
the following situations:
• When the sensor is misaligned
due to a strong impact to the sen-
sor or its surrounding area
• When the distanc e between your
vehicle and a guardr ail, wall, etc.,
that enters the detection area is
short
• When driving up and down con- secutive steep inclines, such as
hills, dips in the road, etc.
• When vehicle lanes are narrow, or when driving on the edge of a
lane, and a vehicle traveling in a
lane other than the adjacent lanes
enters the detection area
• When driving on roads with sharp bends, consecutive curves, or
uneven surfaces
• When the tires are slipping or spinning
• When the distanc e between your
vehicle and a following vehicle is
short
• When an accessory (such as a bicycle carrier) is installed to the
rear of the vehicle
*: If equipped
■Types of sensors
Front corner sensors
Front center sensors
Rear corner sensors
Rear center sensors
Front side sensors (vehicles
with Advanced Park)
Rear side sensors (vehicles
with Advanced Park)
Intuitive parking
assist*
The distance from your
vehicle to objects, such as a
wall, when parallel parking
or maneuvering into a
garage is measured by the
sensors and communi-
cated via the multimedia
display and a buzzer.
Always check the surround-
ing area when using this
system.
System components

2635-5. Using the driving support systems
Owners Manual_USA_M62064_en
5
Driving
■The system can be operated
when
●The power switch is in ON.
●Intuitive parking assist function is
on.
●The vehicle speed is less than
about 6 mph (10 km/h).
●A shift position other than P is
selected.
■If “Clean Parking Assist Sen-
sor” is displayed on the multi-
information display
A sensor may be covered with water
drops, ice, snow, dirt, etc. Remove
the water drops, ice, snow, dirt, etc.,
from the sensor to return the system
to normal.
Also, due to ice forming on a sensor
at low temperatures, a warning
message may be displayed or the
sensor may not be able to detect an
object. Once the ice melts, the sys-
tem will return to normal.
If a warning message is displayed
even if the sensor i s clean, there
may be a sensor malfunction. Have
the vehicle inspected by your Toyota
dealer.
WARNING
●Do not damage the sensors,
and always keep them clean.
●Do not attach a sticker or install
an electronic component, such
as a backlit license plate (espe-
cially fluorescent type), fog
lights, fender pole or wireless
antenna near a radar sensor.
●Do not subject the surrounding
area of the sensor to a strong
impact. If subjected to an
impact, have the vehicle
inspected by your Toyota
dealer. If the fr ont or rear
bumper needs to be
emoved/installed or replaced,
contact your Toyota dealer.
●Do not modify, disassemble or
paint the sensors.
●Do not attach a license plate
cover.
●Keep your tires properly
inflated.
■When to disable the function
In the following situations, disable
the function as it may operate
even though there is no possibility
of a collision.
●Failing to observe the warnings
above.
●A non-genuine Toyota suspen-
sion (lowered suspension, etc.)
is installed.
■Notes when washing the vehi-
cle
Do not apply intensive bursts of
water or steam to the sensor
area.
Doing so may result in the sensor
malfunctioning.
●When using a high pressure
washer to wash the vehicle, do
not spray the sensors directly,
as doing so may cause a sensor
to malfunction.
●When using steam to clean the
vehicle, do not direct steam too
close to the sensors as doing so
may cause a sensor to malfunc-
tion.

2765-5. Using the driving support systems
Owners Manual_USA_M62064_en
●When backing out of a sharp
angle parking spot
●Immediately after the RCTA func-
tion is turned on
●Immediately after the fuel cell sys-
tem is started with the RCTA func-
tion on
●When the sensors cannot detect a
vehicle due to obstructions
●When towing a trailer
●When there is a significant differ-
ence in height between your vehi-
cle and the vehicle that enters the
detection area
●When a sensor or the area around
a sensor is extremely hot or cold
●If the suspension has been modi-
fied or tires of a size other than
specified are installed
●If the front of the vehicle is raised
or lowered due to the carried load
●When turning while backing up
●When a vehicle turns into the
detection area
■Situations in which the system
may operate even if there is no
possibility of a collision
Instances of the RCTA function
unnecessary detec ting a vehicle
and/or object may increase in the
following situations:
●When the parking space faces a
street and vehicles are being
driven on the street
●When the distance between your
vehicle and metal objects, such as
a guardrail, wall, sign, or parked
vehicle, which may reflect electri-
cal waves toward the rear of the
vehicle, is short
●When equipment that may
obstruct a sensor is installed, such
as a towing eyelet, bumper pro-
tector (an additional trim strip,
etc.), bicycle car rier, or snow plow