2023 TOYOTA MIRAI lock

591-2. Child safety
Owners Manual_USA_M62064_en
1
For safety and security
Booster type
High back type
3 Sit the child in the child
restraint system. Fit the seat
belt to the child restraint sys-
tem according to the manu-
facturer’s instructions and
insert the plate into the
buckle. Make sure that the
belt is not twisted.
Check that the shoulder belt is cor-
rectly positioned over the child’s
shoulder and that the lap belt is as
low as possible. ( P.29)
■Removing a child restraint
system installed with a seat
belt
Press the buckle release button
and fully retract the seat belt.
When releasing the buckle, the
child restraint system may spring
up due to the rebound of the seat
cushion. Release the buckle while
holding down the child restraint
system.
Since the seat belt automatically
reels itself, slowly return it to the
stowing position.
WARNING
■When installing a child
restraint system
Observe the following precau-
tions.
Failure to do so may result in
death or serious injury.
●Do not allow children to play
with the seat belt. If the seat belt
becomes twisted around a
child’s neck, it may lead to
choking or other serious injuries
that could result in death.
If this occurs and the buckle
cannot be unfastened, scissors
should be used to cut the belt.
●Ensure that the belt and plate
are securely locked and the
seat belt is not twisted.

601-2. Child safety
Owners Manual_USA_M62064_en
■Child restraint LATCH
anchors
LATCH anchors are provided for
the outboard rear seat. (Buttons
displaying the location of the
anchors are attached to the
seats.)
■When installing in the rear
outboard seats
Install the child restraint system
WARNING
●Shake the child restraint system
left and right, and forward and
backward to ensure that it has
been securely installed.
●When a booster seat is
installed, always ensure that the
shoulder belt is positioned
across the center of the child’s
shoulder. The belt should be
kept away from the child’s neck,
but not so that it could fall off the
child’s shoulder.
●Follow all installation instruc-
tions provided by the child
restraint system manufacturer.
●When securing some types of
child restraint s ystems in rear
seats, it may not be possible to
properly use the seat belts in
positions next to the child
restraint without interfering with
it or affecting seat belt effective-
ness. Be sure your seat belt fits
snugly across your shoulder
and low on your hips. If it does
not, or if it interferes with the
child restraint, move to a differ-
ent position. Failure to do so
may result in death or serious
injury.
●When installing a child restraint
system in the rear center seat,
adjust both seat cushions to the
same position and align both
seatbacks at the same angle.
Otherwise, the child restraint
system cannot be securely
restrained and t his may cause
death or serious injuries in the
event of sudden braking, sud-
den swerving or an accident.
●If the seat is adjusted, reconfirm
the security of the child restraint
system.
■When installing a booster
seat
To prevent the belt from going into
ALR lock mode, do not fully
extend the shoulder belt. ALR
mode causes the belt to tighten
only. This could cause injury or
discomfort to the child. ( P. 3 1 )
■Do not use a seat belt
extender
If a seat belt extender is used
when installing a child restraint
system, the seat belt will not
securely hold the child restraint
system, which could cause death
or serious injury to the child or
other passengers in the event of
sudden braking, sudden swerv-
ing or an accident.
Child restraint system
fixed with a child restraint
LATCH anchor

711-4. Theft deterrent system
Owners Manual_USA_M62064_en
1
For safety and security
■Items to check before lock-
ing the vehicle
To prevent unexpected trigger-
ing of the alarm and vehicle
theft, make sure of the following: 
Nobody is in the vehicle.
 The windows are closed
before the alarm is set.
 No valuables or other per-
sonal items are left in the
vehicle.
■Setting
Close the doors, trunk and
hood, and lock all the doors
using the entry function or wire-
less remote control. The system
will be set automatically after 30
seconds.
Except for Canada: The alarm
can also be set using the
mechanical key.
The indicator light changes from
being on to flashing when the sys-
tem is set.
■Deactivating or stopping
Do one of the following to deac-
tivate or stop the alarms:
 Except for Canada: Unlock
the doors.
 Except for Canada: Unlock
the trunk using the mechani-
cal key.
Alarm
The alarm uses light and
sound to give an alert when
an intrusion is detected.
The alarm is triggered in the
following situations when
the alarm is set:
Except for Canada
 A locked door or trunk is
unlocked or opened in any
way other than using the
entry function, wireless
remote control or mechani-
cal key. (The doors will lock
again automatically.)
The hood is opened.
For Canada
 A locked door or trunk is
unlocked or opened in any
way other than using the
entry function or wireless
remote control. (The doors
will lock again automati-
cally.)
The hood is opened.
Setting/deactivating/stop-
ping the alarm system

721-4. Theft deterrent system
Owners Manual_USA_M62064_en
For Canada: Unlock the doors
or trunk using the entry func-
tion or wireless remote con-
trol.
 Turn the power switch to ACC
or ON, or start the fuel cell
system. (The alarm will be
deactivated or stopped after a
few seconds.)
■System maintenance
The vehicle has a maintenance-free
type alarm system.
■Triggering of the alarm
The alarm may be triggered in the
following situations:
(Stopping the alarm deactivates the
alarm system.)
●For Canada: The doors are
unlocked using the mechanical
key.
●For Canada: The trunk is opened
using the mechanical key.
●A person inside the vehicle opens
a door, the trunk or hood, or
unlocks the vehicle.
●The 12-volt battery is recharged or
replaced when the vehicle is
locked. ( P.487)
■Alarm-operated door lock
In the following cases, depending
on the situation, the door may auto-
matically lock to prevent improper
entry into the vehicle:
●When a person remaining in the
vehicle unlocks the door and the
alarm is activated.
●While the alarm i s activated, a
person remaining in the vehicle
unlocks the door.
■Customization
Some functions can be customized.
(  P.512)
NOTICE
■To ensure the system oper-
ates correctly
Do not modify or remove the sys-
tem. If modified or removed, the
proper operation of the system
cannot be guaranteed.

772-1. Fuel cell electric vehicle
Owners Manual_USA_M62064_en
2
Fuel cell system
Electric motor (traction motor)
Tailpipe
*: If equipped
■Sounds unique to the fuel cell electric vehicle
Due to the design of y our fuel cell electric vehicle, there are various relays,
valves and pumps whic h under normal driving conditions will pro duce
sounds. This is a normal characte ristic of the vehicle and does not indicate a
malfunction.
Furthermore, these sounds may differ based on usage environment or con-
dition.
Noticeable soundsSource of the sounds
Clunking, clicking and
clackingOperation of relays and hydrogen tank valves
(Sounds may be heard wh en starting or stop-
ping the fuel cell system.)
Knocking
The parking lock is engaged
(Sounds may be heard when pressing the P
position switch or stopp ing the fuel cell sys-
tem.)
Whooshing, squealingGas is flowing through the nozzle and valves
(Sounds may be heard when filling the fuel.)
High pitch sound
 Pulsing sound
 Whooshing sound
Operation of the pumps
(In particular, sounds may be heard when
starting the fuel cell s ystem, accelerating from
a stop, or pressing the H
2O switch. The sound
may be louder when in Br mode or when the
vehicle decelerates during dynamic radar
cruise control.)
 Humming sound
 High pitch soundOperation of the motor
(In particular, sounds may be heard when
accelerating or decelerating.)
Blowing and draining
sound
Exhaust water or air is being purged
May also occur periodically while parked when
it is cold to p revent freezing.
(Sounds may be hear d when vehicle is
stopped, fuel cell system is stopped or while
parked)

842-1. Fuel cell electric vehicle
Owners Manual_USA_M62064_enhydrogen tanks or valves need to
be disposed.
■Fuel cell stack coolant
●Fuel cell stack coolant uses a spe-
cifically-designed fluid with high
electrical insulation properties, in
order to safely cool the high-volt-
age fuel cell stack.
●Never add water or other coolants
to the fuel cell st
ack cooling sys-
tem, as they will cause permanent
damage.
●Consult your Toyota dealer for
replenishing or changing the fuel
cell stack coolant.
■Ion filter
●An ion filter is inst alled in the cool-
ant lines for the fuel cell stack, in
order to maintain the normal insu-
lation properties of the coolant.
●It is necessary to periodically
change the ion filter. ( P.466)
Contact your Toyota dealer for this
periodic maintenance.
■Tailpipe
●When the power switch is turned
off and the fuel cell system is
stopped ( P.182) after driving,
exhaust water is discharged. Be
careful when standing behind the
vehicle to avoid dripping or spray-
ing.
●It is possible to manually purge
the exhaust. Thi s may be desir-
able, for instance, before parking
in a garage. This is done by press-
ing the H
2O switch. ( P.196)
●On cold days, water vapor in the
exhaust may appe ar as a white
mist emitted from the tailpipe. This
is not a malfunction. A white mist
may be emitted from the vehicle
side depending on the wind direc-
tion. If it is a concern, consult with
a Toyota dealer.
●If the tailpipe is blocked, the fuel
cell system will stop.
●In the following state when cold, a white mist may be emitted. Water
vapor is being emitted as a sys-
tem protection and it is not a mal-
function.
• If several minutes have passed after opening the fuel lid, such as
refueling.
• Several hours have passed after the power switch was turned off.
■Hydrogen detectors
When the power switch is turned to
ON, the hydrogen detectors are
activated.
■Power output restriction
When the power output is restricted,
the vehicle may fa il to accelerate or
even decelerate, even though the
accelerator pedal is depressed. If a
safe driving speed cannot be main-
tained, stop the ve hicle in a safe
place away from the traffic. This
may be caused by the following con-
ditions:
●The coolant temperature may be
too high. This can be caused by
driving conditions such as
repeated sudden acceleration and
deceleration, continuous driving
on an incline, continuous driving
at high altitudes with a high load,
etc. In such situations, “FCV sys-
tem overheated Output power
reduced” is displayed on the multi-
information display, and the power
output is restricted. Once the cool-
ant returns to normal temperature,
the power output will retu rn to nor-
mal. ( P.464)
●The remaining fuel may be low.
After the low fuel level warning
light comes on, the output power
will be gradually restricted in order
to extend the possible driving dis-
tance. Once getting to this point,
the remaining driving distance
possible is short. Immediately refill
the vehicle with hydrogen.
●On cold days, the low fuel level
warning light comes on faster than
usual and the output power is
restricted.

872-1. Fuel cell electric vehicle
Owners Manual_USA_M62064_en
2
Fuel cell system
WARNING
●The hydrogen tanks, fuel cell
stack, hydrogen pipelines, and
connecting components are
filled with hydrogen gas. Do not
remove or disassemble these
parts. Doing so can cause a
hydrogen gas leak, resulting in
fire or explosion of the vehicle,
which may result in death or
serious injury.
■When hydrogen gas leak or
other malfunctio n is detected
●If a large amount of hydrogen
gas leaking is noticed, turn off
the power switch, exit the vehi-
cle, and stay far away from it.
Display warning signs and keep
sources of fire away from the
vehicle. If possible, get assis-
tance. When the above is done,
immediately contact your Toyota
dealer.
●If you notice gas leaking or any
other malfunction, immediately
stop the vehicle in a safe and
well-ventilated place, exit the
vehicle, and stay far away from
it.
●If a warning message is dis-
played in the multi-information
display, immediately stop the
vehicle in a safe, well-ventilated
outdoor place.
■Tailpipe
●Do not directly touch the water
or steam coming out of the tail-
pipe. Doing so may cause low-
temperature burns.
●The fuel cell electric vehicle
generates water during power
generation. The generated
water discharged from the tail-
pipe is not suitable for drinking.
Never drink the water coming
out of the tailpipe.
●You may notice a strange odor
from the tailpipe for a while after
the purchase of a new vehicle
or after an extended period of
non-use, but this is not a mal-
function. Also, the odor is harm-
less but it may be unpleasant,
so do not breathe in the
exhaust.
■High-voltage and high-tem-
perature precautions
This vehicle is equipped with a
high-voltage system. Follow the
instructions below as high-volt-
ages can cause severe burns and
electric shock that may result in
death or serious injury.
●Never touch, disassemble,
remove, or replace the high-
voltage parts, cables (orange),
or connectors.
●The components inside the fuel
cell unit compartment will
become hot during operation.
Be careful of both the high-volt-
age and high-temperature, and
always obey the warning labels
on the vehicle.
●Never touch the service plug
that is installed on the traction
battery. The service plug is used
to block high-voltages coming
from the traction battery during
maintenance or repair at your
Toyota dealer.

902-1. Fuel cell electric vehicle
Owners Manual_USA_M62064_en
■If a warning light comes on, a
warning message is displayed,
or the 12-volt battery connec-
tion is disconnected
The fuel cell system may not be
able to restart.
If the “READY” indicator does not
come on, even when the start pro-
cedure is repeated, contact your
Toyota dealer.
There are air intake vents on
each side of the rear seatback
with the purpose of cooling the
traction battery. If the vents are
blocked, it may interfere with the
cooling of the traction battery.
If input/output of the traction battery
becomes limited and the distance
that the vehicle can be driven using
the traction motor is reduced, the
fuel economy may be reduced.
Traction battery air intake
vents
NOTICE
■Traction battery air intake
vents
●Make sure not to block the air
intake vents with anything, such
as cover, or luggage. The
input/output of t he traction bat-
tery may be restricted, leading
to a reduction in traction battery
output and a malfunction.
●Periodically clean the air intake
vents to prevent them from clog-
ging. ( P.433)
●Do not get water or foreign
materials in the air intake vents
as this may cause a short circuit
and damage the traction bat-
tery.