2023 TOYOTA MIRAI stop start

1705-1. Before driving
Owners Manual_USA_M62064_enup, and the
road will be slippery.
●Drive carefully whe n it starts to
rain, because the road surface will
be especially slippery.
●Refrain from high speeds when
driving on an expressway in the
rain, because there may be a
layer of water between the tires
and the road surface, preventing
the steering and brakes from
operating properly.
■ECO Accelerator Guidance
(  P.108)
Eco-friendly driving may be
achieved more easily by staying
within the zone of Eco acceleration.
Also, by staying w ithin the zone of
Eco acceleration, i t will be easier to
obtain a good Eco score.
●When starting off:
Gradually depress the accelerator
pedal to stay withi n the zone of Eco
acceleration and accelerate to the
desired speed. By refraining from
excessive acceleration, a good eco
start score will be obtained.
●When driving:
After accelerating to the desired
speed, release the accelerator
pedal and drive at a stable speed
while staying within the zone of Eco
acceleration. By staying within the
zone of Eco acceleration, a good
eco cruise score will be obtained.
●When stopping:
By starting to release the accelera-
tor pedal early before decelerating,
a good eco stop score will be
obtained.
■Restraining the fuel cell system
output (Brake Override System)
●When the accelerator and brake
pedals are depressed at the same
time, the fuel cell system output
may be restrained.
●A warning message is displayed
on the multi-information display
while the system is operating.
■Breaking in your new Toyota
To extend the life of the vehicle,
observing the following precautions
is recommended:
●For the first 186 miles (300 km):
Avoid sudden stops.
●For the first 621 miles (1000 km):
• Do not drive at extremely high speeds.
• Avoid sudden acceleration.
• Do not drive continuously in low
gears.
• Do not drive at a constant speed
for extended periods.
■Drum-in-disc type parking
brake system
Your vehicle has a drum-in-disc type
parking brake system. This type of
brake system needs bedding-down
of the brake shoes periodically or
whenever the par king brake shoes
and/or drum are replaced. Have
your Toyota dealer perform the bed-
ding down operation.
■Operating your v ehicle in a for-
eign country
Comply with the relevant vehicle
registration laws and confirm the
availability of the correct fuel.
(  P.497)
WARNING
Observe the following precau-
tions.
Failure to do so may result in
death or serious injury.
■When starting the vehicle
Always keep your foot on the
brake pedal while stopped with
the “READY” indica tor is illumi-
nated. This prevents the vehicle
from creeping.

1735-1. Before driving
Owners Manual_USA_M62064_en
5
Driving
WARNING
●If the vehicle is stopped on an
incline, in order to prevent acci-
dents caused by the vehicle roll-
ing forward or backward, always
depress the brake pedal and
securely apply the parking
brake as needed.
■When the vehicle is parked
●Do not leave glasses, cigarette
lighters, spray cans, or soft
drink cans in the vehicle when it
is in the sun.
Doing so may result in the fol-
lowing:
• Gas may leak from a cigarette lighter or spray can, and may
lead to a fire.
• The temperature inside the vehicle may cause the plastic
lenses and plastic material of
glasses to deform or crack.
• Soft drink cans may fracture, causing the contents to spray
over the interior of the vehicle,
and may also caus e a short cir-
cuit in the vehicle’s electrical
components.
●Do not leave cigarette lighters in
the vehicle. If a cigarette lighter
is in a place such as the glove
box or on the floor, it may be lit
accidentally when luggage is
loaded or the seat is adjusted,
causing a fire.
●Do not attach adhesive discs to
the windshield or windows. Do
not place containers such as air
fresheners on the instrument
panel or dashboard. Adhesive
discs or containers may act as
lenses, causing a fire in the
vehicle.
●Do not leave a door or window
open if the curved glass is
coated with a metallized film
such as a silver-colored one.
Reflected sunlight may cause
the glass to act a s a lens, caus-
ing a fire.
●Always apply the parking brake,
shift the shift position to P, stop
the fuel cell system and lock the
vehicle.
Do not leave the vehicle unat-
tended while the “READY” indi-
cator is illuminated.
If the vehicle is parked with the
shift position in P but the park-
ing brake is not set, the vehicle
may start to move, possibly
leading to an accident.
■When taking a nap in the vehi-
cle
Always turn the fuel cell system
off. Otherwise, if you accidentally
move the shift lever or depress
the accelerator pedal, causing the
vehicle to unintentionally move,
which can lead to an accident,
resulting in death o r serious injury.
■When braking
●When the brakes are wet, drive
more cautiously.
Braking distance increases
when the brakes are wet, and
this may cause one side of the
vehicle to brake d ifferently than
the other side. Also, the parking
brake may not securely hold the
vehicle.
●If the electronically controlled
brake system does not operate,
do not follow other vehicles
closely and avoid hills or sharp
turns that require braking.
In this case, braking is still pos-
sible, but the brake pedal
should be depressed more
firmly than usual. Also, the brak-
ing distance will increase. Have
your brakes fixed immediately.

1815-2. Driving procedures
Owners Manual_USA_M62064_en
5
Driving
Shutdown Due to Freezing Stop in
a Safe Place See Owner’s Man-
ual” may be displayed in the multi-
information display.
The fuel cell system is frozen and
cannot be started. Contact your Toy-
ota dealer.
●The power output will be tempo-
rarily limited until the fuel cell sys-
tem reaches full operating
temperature.
●When the traction battery is
extremely cold (below approxi-
mately -22˚F [-3 0˚C]) under the
influence of outsi de temperature,
it may not be poss ible to start the
fuel cell system. In this case, try to
start the fuel ce ll system again
after the temperat ure of the trac-
tion battery increases due to the
outside temperature increase etc.
■If the fuel cell system does not
start
●The immobilizer system may not
have been deactivated. ( P. 7 0 )
Contact your Toyota dealer.
●If a message related to start-up is
shown on the multi-information
display, read the message and fol-
low the instructions.
●Check that the fuel door is closed.
When the fuel doo r is open, the
fuel cell system cannot be started.
Close the fuel door before starting
the system. ( P.212)
■Sounds and vibrations specific
to a fuel cell electric vehicle
 P. 7 7
■If the 12-volt battery is dis-
charged
The fuel cell system cannot be
started using the smart key system.
Refer to P.485to res tart the fuel cell
system.
■Electronic key battery depletion
 P. 1 2 4
■Conditions affecting operation
 P.138
■Notes for the entry function
 P.138
■If “Smart Key System Malfunc-
tion See Owner’s Manual” is
displayed on the multi-informa-
tion display
The system may be malfunctioning.
Have the vehicle inspected by your
Toyota dealer immediately.
■If the “READY” indicator does
not come on
In the event that the “READY” indi-
cator does not come on even after
performing the proper procedures
for starting the vehicle, contact your
Toyota dealer immediately.
■If the fuel cell system is mal-
functioning
 P.464
■Electronic key battery
 P.436
■Operation of the power switch
●If the switch is not pressed shortly
and firmly, the power switch mode
may not change or the fuel cell
system may not start.
●If attempting to restart the fuel cell
system immediately after turning
the power switch off, the fuel cell
system may not start in some
cases. After turning the power
switch off, please wait a few sec-
onds before restarting the fuel cell
system.
■Customization
If the smart key system has been
deactivated in a customized setting,
refer to P.482.

1825-2. Driving procedures
Owners Manual_USA_M62064_en
1Stop the vehicle completely.
2 Set the parking brake.
( P.191)
3 Press the P position switch.
( P.185)
Check that the shift position indica-
tor shows P and the parking brake
indicator is illuminated.
4Press the power switch.
The fuel cell system will stop, and
the meter displa y will be extin-
guished (the shift position indicator will be extinguished
a few seconds
after the meter display).
5 Release the brake pedal and
check that “ACCESSORY” or
“IGNITION ON” is not shown
on the meter.
■Stopping the fuel cell system in
cold temperatures
●When the power switch is pressed
and the fuel cell system is stopped
during cold temperatures, the time
for water purge from the tailpipe
may be longer than usual to pre-
vent liquid in the fuel cell stack
from freezing.
●If the “FCV System Purge in Prog-
ress Purge will St op Automati-
cally” is displayed in the multi-
information display, however it is
no problem to exit the vehicle.
●The water purge time may also be
long if the system is stopped
before fuel cell system warm-up is
completed.
●It is normal to hear hissing and
other sounds during purge.
(  P. 7 7 )
●It is not a problem to do refueling
operations while the system is
purging.
The purging process is carried out
automatically afte r several min-
utes and a white mist may be
emitted, however this is not a mal-
function.
■Parking the vehic le during cold
weather
●Water may automatically purge
from the tailpipe, even when the
fuel cell system is off, in order to
prevent liquid in the fuel cell stack,
hydrogen pipelines, etc., from
freezing. Also, water vapor may
be purged, but this is not malfunc-
tion.
●It is normal to hear hissing and
other sounds during purge.
WARNING
■When starting the fuel cell
system
Always start the fuel cell system
while sitting in the driver’s seat.
Do not depress the accelerator
pedal while starting the fuel cell
system under any circumstances.
Doing so may cause an accident
resulting in death or serious injury.
NOTICE
■When starting the fuel cell
system
If the fuel cell system becomes
difficult to start, have your vehicle
checked by your Toyota dealer
immediately.
■Symptoms indicating a mal-
function with the power
switch
If the power switch seems to be
operating somewh at differently
than usual, such as the switch
sticking slightly, there may be a
malfunction. Contact your Toyota
dealer immediately.
Stopping the fuel cell sys-
tem

1835-2. Driving procedures
Owners Manual_USA_M62064_en
5
Driving
(  P. 7 7 )
■Automatic fuel cell system shut
off feature
●The vehicle is equipped with a
feature that automatically shuts off
the fuel cell system when the shift
position is in P with the fuel cell
system operating for an extended
period.
●The fuel cell system will automati-
cally shut off after approximately 1
hour if it has been left running
while the shift position is in P.
●The timer for the automatic fuel
cell system shut off feature will
reset if the brake pedal is
depressed or if the shift position is
in a position other than P.
●After the vehicle is parked, if the
door is locked with the door lock
switch ( P.130) from the inside or
the mechanical key from the out-
side, the automat ic fuel cell sys-
tem shut off feature will be
disabled. The tim er for the auto-
matic fuel cell system shut off fea-
ture will be re- enabled if the
driver’s door is opened.
■When the shift c ontrol system
malfunctions
When attempting to turn the power
switch off while there is a malfunc-
tion in the shift control system, the
power switch mode may change to
ACC. In this cas e, ACC may be
turned off by applying the parking
brake and pressing the power
switch again.
If there is a malfunction in the sys-
tem, have the vehicle inspected by
your Toyota dealer immediately.
■Automatic P position selection
function
 P. 1 8 7
■Water release (H2O switch)
 P. 1 9 6
Modes can be changed by
pressing the power switch with
the brake pedal released. (The
mode changes each time the
switch is pressed.)
WARNING
■Stopping the fuel cell system
in an emergency
●If you want to stop the fuel cell
system in an emergency while
driving the vehicle, press and
hold the power s witch for more
than 2 seconds, or press it
briefly 3 times or more in suc-
cession. ( P.446)
However, do not touch the
power switch while driving
except in an emergency. Turn-
ing the fuel cell system off while
driving will not cause loss of
steering or braking control, how-
ever, power assist to the steer-
ing will be lost. This will make it
more difficult to steer smoothly,
so you should pull over and stop
the vehicle as soon as it is safe
to do so.
●If the power switch is operated
while the vehicle is running, a
warning message will be shown
on the multi-information display
and a buzzer sounds.
●When restarting the fuel cell
system after an emergency
shutdown, press the power
switch.
Changing power switch
modes

1855-2. Driving procedures
Owners Manual_USA_M62064_en
5
DrivingBr mode is not a shift position.
( P.189)
■If a message about a shift oper-
ation is shown
To prevent the shift position from
being selected inco rrectly or the
vehicle from moving unexpectedly,
the shift position may be changed
automatically or operating the shift
lever may be requi red. In this case,
change the shift position following
the messages on the multi-informa-
tion display.
Shift lever
Operate the shift lever gently and
Shift position
Select the shift position
depending on your pur-
pose and situation.
Shift position purpose
and functions
Shift posi-
tionObjective or function
P
Parking the vehi-
cle/starting the fuel cell system
RReversing
NNeutral
DNormal driving
NOTICE
■Situations where shift control
system malfunctions are pos-
sible
If any of the follo wing situations
occurs, shift control system mal-
functions are possible.
Immediately stop t he vehicle in a
safe place on level ground, apply
the parking brake, and then con-
tact your Toyota dealer.
●When the warning message
indicating the shift control sys-
tem appears on the multi-infor-
mation display. ( P.464)
●The display indicates that no
shift position is selected for
more than a few seconds.
Shift position display and
how to change the shift
position

1875-2. Driving procedures
Owners Manual_USA_M62064_en
5
Driving
speed with the accelerator pedal
depressed
●When attempting to change the
shift position from P or N to Br
mode
●When the P position switch is
pressed while driving
When driving at an extremely low
speed, the shift position may
change to P.
■The shift position automatically
changes to N when
In the following situations, a buzzer
will sound to inform you that the shift
position has been changed to N.
Use the appropriate operation to
attempt to change the shift position
again.
●When attempting to change the
shift position to R while the vehicle
is moving forward
When driving at a low speed, the
shift position may change to R.
●When attempting to change the
shift position to D while the vehicle
is moving backward
When driving at a low speed, the
shift position may change to D.
●When attempting to change the
shift position from R to Br mode
■If the N shift position is selected
while driving
If the shift lever is moved to N while
driving above a certain speed, the
shift position will change to N with-
out holding the shi ft lever in the N
position. In this situation, a buzzer
will sound and a message will be
displayed on the multi-information
display to inform you that the shift
position has been changed to N.
■Automatic P position selection
function
In the following situations, the shift
position is automatically changed to
P.
●When pressing t he power switch
with the vehicle stopped while the
power switch is in ON and the shift
position is in a position other than
P (after the shift position has
changed to P, the power switch
will turn off)
*
●If the driver’s door is opened and
all of the following conditions are
met, while the shift position is in a
position other than P
• The power switch is in ON.
• The driver is not wearing the seat
belt.
• The brake pedal is not depressed.
To start off the vehicle after the shift
position is changed to P, operate the
shift lever again.
●When the vehicle is stopped after
the fuel cell system has been
stopped in an emergency while
driving
●When voltage of the 12-volt bat-
tery drops while the shift position
is in a position other than P
*: When the power switch is pressed
while driving at extremely slow
speeds, such as immediately
before stopping th e vehicle, the
shift position may automatically
change to P. Make sure that the
vehicle is completely stopped
before pressing the power switch.
■If the shift position cannot be
shifted from P
There is a possibility that the 12-volt
battery is dischar ged. Check the 12-
volt battery in this situation.
(  P.485)

1945-2. Driving procedures
Owners Manual_USA_M62064_en
Turns the brake hold system on
The brake hold standby indicator
(green) comes on. While the
system is holding the brake, the
brake hold operated indicator (yel-
low) comes on.
■Brake hold system operating
conditions
The brake hold system cannot be
turned on in the following condi-
tions:
●The driver’s doo r is not closed.
●The driver is not wearing the seat belt.
●The parking brake is engaged.
If any of the cond itions above are
detected when the brake hold sys-
tem is enabled, the system will turn
off and the brake hold standby indi-
cator light will go off. In addition, if
any of the conditions are detected
while the system is holding the
brake, a warning buzzer will sound
and a message will be shown on the
multi-information display. The park-
ing brake will then be set automati-
cally.
■Brake hold function
●If the brake pedal is left released
for a period of about 3 minutes
after the system has started hold-
ing the brake, the parking brake
will be set automatically. In this
case, a warning buzzer sounds
and a message is shown on the
multi-information display.
●To turn the system off while the
system is holding the brake, firmly
depress the brake pedal and
press the button again.
●The brake hold function may not
hold the vehicle when the vehicle
is on a steep incline. In this situa-
tion, it may be ne cessary for the
driver to apply the brakes. A warn-
ing buzzer will sound and the
multi-information display will
inform the driver of this situation. If
a warning message is shown on
the multi-information display, read
the message and follow the
instructions.
■When the parking brake is set
automatically while the system
is holding the brakes
Perform any of the following opera-
tions to release the parking brake.
●Depress the accelerator pedal.
(The parking brake will not be
released automatically if the seat
belt is not fastened.)
●Operate the parkin g brake switch
with the brake pedal depressed.
Brake Hold
The brake hold system
keeps the brake applied
when the shift position is in
D or N with the system on
and the brake pedal has
been depressed to stop the
vehicle. The system
releases the brake when the
accelerator pedal is
depressed with the shift
position in D to allow
smooth start off.
Enabling the system