2023 TOYOTA MIRAI warning light

1715-1. Before driving
Owners Manual_USA_M62064_en
5
Driving
WARNING
■When driving the vehicle
●Do not drive if y ou are unfamil-
iar with the location of the brake
and accelerator pedals to avoid
depressing the wrong pedal.
• Accidentally depressing the accelerator pedal instead of the
brake pedal will result in sudden
acceleration that may lead to an
accident.
• When backing up, you may twist your body around, leading to dif-
ficulty in operating the pedals.
Make sure to operate the pedals
properly.
• Make sure to keep a correct driving posture even when mov-
ing the vehicle only slightly. This
allows you to depress the brake
and accelerator pedals properly.
• Depress the brake pedal using your right foot. Depressing the
brake pedal using your left foot
may delay respon se in an emer-
gency, resulting in an accident.
●The driver should pay extra
attention to pedes trians as this
vehicle is powered only by an
electric motor (traction motor).
As there is no engine noise, the
pedestrians may misjudge the
vehicle’s movement. Even with
the acoustic vehicle alerting
system activate, d rive with care
as pedestrians in the vicinity
may still not notice the vehicle if
the surrounding area is noisy.
●During normal driving, do not
turn off the fuel cell system.
Turning the fuel cell system off
while driving will not cause loss
of steering or braking control,
however, power assist to the
steering 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.
In the event of a n emergency,
such as if it becomes impossible
to stop the vehicle in the normal
way:  P. 4 4 6
●Using the brakes continuously
may cause the brakes to over-
heat and lose effectiveness
when driving down a steep hill.
●Do not adjust the positions of
the steering wheel, the seat, or
the inside or outside rear view
mirrors while driving.
Doing so may result in a loss of
vehicle control.
●Always check that all passen-
gers’ arms, heads or other parts
of their body are not outside the
vehicle.
●Do not drive in excess of the
speed limit. Even if the legal
speed limit permits it, do not
drive over 85 mph (140 km/h)
unless your vehicle has high-
speed capability tires. Driving
over 85 mph (140 km/h) may
result in tire fa ilure, loss of con-
trol and possible injury. Be sure
to consult a tire dealer to deter-
mine whether the tires on your
vehicle are high-speed capabil-
ity tires or not before driving at
such speeds.
■When driving on slippery
road surfaces
●Sudden braking, acceleration
and steering may cause tire
slippage and reduce your ability
to control the vehicle.

1725-1. Before driving
Owners Manual_USA_M62064_en
WARNING
●Sudden acceleration or regen-
erative braking due to shifting
could cause the vehicle to skid.
●After driving through a puddle,
lightly depress the brake pedal
to make sure that the brakes
are functioning properly. Wet
brake pads may prevent the
brakes from functioning prop-
erly. If the brakes on only one
side are wet and not functioning
properly, steering control may
be affected.
■When shifting the shift posi-
tion
●Do not let the vehicle roll back-
ward while a forward driving
position is selected, or roll for-
ward while the shift position is in
R.
Doing so may result in an acci-
dent or damage to the vehicle.
●Do not shift the shift position to
P while the vehicle is moving.
Doing so can damage the trans-
mission and may result in a loss
of vehicle control.
●Do not shift the shift position to
R while the vehicle is moving
forward.
Doing so can damage the trans-
mission and may result in a loss
of vehicle control.
●Do not shift the shift position to
a driving position while the vehi-
cle is moving backward.
Doing so can damage the trans-
mission and may result in a loss
of vehicle control.
●Changing the shif t position to N
while the vehicle is moving will
disengage the fuel cell system.
Regenerative braking is not
available with the fuel cell sys-
tem disengaged.
●Be careful not to change the
shift position with the accelera-
tor pedal depressed. Changing
the shift position to any posi-
tions other than P or N may lead
to unexpected rapid accelera-
tion of the vehicle that may
cause an acciden t and result in
death or serious injury.
After changing the shift position,
make sure to confirm the cur-
rent shift position displayed on
the shift position indicator inside
the meter.
■If you hear a squealing or
scraping noise (brake pad
wear limit indicators)
Have the brake pads checked and
replaced by your Toyota dealer as
soon as possible.
Rotor damage may result if the
pads are not replaced when
needed.
It is dangerous to drive the vehicle
when the wear limits of the brake
pads and/or those of the brake
discs are exceeded.
■When the vehicle is stopped
●Do not depress the accelerator
pedal unnecessarily.
If the shift position is in any
position other than P or N, the
vehicle may accelerate sud-
denly and unexpectedly, caus-
ing an accident.
●In order to prevent accidents
due to the vehic le rolling away,
always keep depressing the
brake pedal while stopped with
the “READY” indicator is illumi-
nated, and apply the parking
brake as necessary.

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.

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

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

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.

2005-3. Operating the lights and wipers
Owners Manual_USA_M62064_en
1With the headlights on, push
the lever away from you to
turn on the high beams.
Pull the lever toward you to the
center position to turn the high
beams off.
2Pull the lever toward you and
release it to flash the high
beams once.
You can flash the high beams with
the headlights on or off.
1Press the Automatic High
Beam switch.
Turning on the high beam
headlightsAHB (Automatic High
Beam)
The Automatic High Beam
uses a front camera located
behind the upper portion of
the windshield to assess the
brightness of the lights of
vehicles ahead, street-
lights, etc., and automati-
cally turns the high beams
on or off as necessary.
WARNING
■Limitations of the Automatic
High Beam
Do not overly rely on the Auto-
matic High Beam. Always drive
safely, taking care to observe your
surroundings and turning the high
beams on or off manually if nec-
essary.
■To prevent inc orrect opera-
tion of the Automatic High
Beam system
Do not overload the vehicle.
Activating the Automatic
High Beam

2075-3. Operating the lights and wipers
Owners Manual_USA_M62064_en
5
Driving
■If no windshield washer fluid
sprays
Check that the wash er nozzles are
not blocked if there is washer fluid in
the windshield washer fluid reser-
v oi r.
■Front door opening linked wind-
shield wiper stop function
(vehicles with rain-sensing
windshield wipers)
When is selected and the wind-
shield wipers are operating, if a front
door is opened while the vehicle is
stopped and the P shift position is
selected, operation of the wind-
shield wipers will be stopped to pre-
vent anyone near the vehicle from
being sprayed by water from the
wipers. When the front door is
closed, wiper operation will resume.
■When stopping fuel cell system
in an emergency while driving
If the windshield wipers are operat-
ing when fuel cell system is
stopped, the windshield wipers will
operate in high speed operation.
After the vehicle is stopped, opera-
tion will return to normal when the
power switch is turned to ON, or
operation will stop w hen the driver’s
door is opened.
When the windshield wipers are
not being used, they retract to
below the hood. To enable the
windshield wipers to be lifted
WARNING
■Caution regarding the use of
windshield wipers in AUTO
mode (vehicles with rain-
sensing windshield wipers)
The windshield wipers may oper-
ate unexpectedly if the sensor is
touched or the windshield is sub-
ject to vibration in AUTO mode.
Take care that your fingers or any-
thing else do not become caught
in the windshield wipers.
■Caution regarding the use of
washer fluid
When it is cold, do not use the
washer fluid unt il the windshield
becomes warm. The fluid may
freeze on the windshield and
cause low visibility. This may lead
to an accident, resulting in death
or serious injury.
NOTICE
■When there is no washer fluid
spray from the nozzle
Damage to the washer fluid pump
may be caused if the lever is
pulled toward you and held con-
tinually.
■When a nozzle becomes
blocked
In this case, contact your Toyota
dealer.
Do not try to clear it with a pin or
other object. The nozzle will be
damaged.
Changing the windshield
wiper rest position/Lifting
the windshield wipers