2023 TOYOTA MIRAI battery

1203-1. Instrument cluster
Owners Manual_USA_M62064_en
Traction battery
Front tires
Rear tires
Multimedia display
The figure shows all the arrows for
the purpose of this explanation, but
the actual contents of the display
will differ.
Fuel cell system
Traction battery
Electric motor (traction
motor)
Rear tires
Front tires
■Traction battery status
The display changes in 8 levels
according to the remaining charge
amount of the traction battery.
• The figure shows the multi-infor- mation display as an example for
explanation.
• These images are examples only, and may vary slight ly from actual
conditions.
• The electrical charge and dis- charge arrow display for the fluc-
tuations of the remaining battery
charge display and Fuel cell Sys-
tem Indicator may not always
match. However, this is not a mal- function.
Low
High
■Display procedure
1 Select on the main
menu.
2 Select “Trip information”.
■Display
Use the displayed average fuel
consumption as a reference.
The image is an example only,
and may vary slightly from
actual conditions.
Latest fuel consumption
Best recorded fuel consump-
tion
History fuel consumption
screen (multimedia dis-
play only)

1244-1. Key information
Owners Manual_USA_M62064_en
4-1.Key information
The following keys are provided
with the vehicle.Electronic keys
• Operating the smart key system ( P.136)
• Operating the wireless remote control function ( P.125)
Mechanical keys
Key number plate
■When riding in an aircraft
When bringing an electronic key
onto an aircraft, make sure you do
not press any buttons on the elec-
tronic key while inside the aircraft
cabin. If you are carrying an elec-
tronic key in your bag, etc., ensure
that the buttons are not likely to be
pressed accidentally. Pressing a
button may cause the electronic key
to emit radio waves that could inter-
fere with the oper ation of the air-
craft.
■Electronic key battery depletion
●The standard battery life is 1 to 2
years.
●If the battery becomes low, an
alarm will sound in the cabin and a
message will be s hown on the
multi-information display when the fuel cell system is stopped.
●To reduce key battery depletion
when the electronic key is to not
be used for long periods of time,
set the electronic key to the bat-
tery-saving mode. (
P.137)
●As the electronic key always
receives radio waves, the battery
will become depleted even if the
electronic key is not used. The fol-
lowing symptoms indicate that the
electronic key battery may be
depleted. Replace the battery
when necessary.
• The smart key system or the wire- less remote contro l does not oper-
ate.
• The detection area becomes smaller.
• The LED indicator on the key sur- face does not turn on.
●To avoid serious deterioration, do
not leave the electronic key within
3 ft. (1 m) of the following electri-
cal appliances that produce a
magnetic field:
•TVs
• Personal computers
• Cellular phones, cordless phones and battery chargers
• Recharging cellular phones or cordless phones
• Table lamps
• Induction cookers
■Replacing the battery
 P.436
■Confirmation of the number of
registered keys
The number of keys already regis-
tered to the vehi cle can be con-
firmed. Ask your Toyota dealer for
details.
■If “A New Key has been Regis-
tered Contact Your Dealer for
Details” is shown on the multi-
information display
This message will be displayed
each time the driver’s door is
opened when the doors are
unlocked from the outside for
Keys
The keys

1264-1. Key information
Owners Manual_USA_M62064_enon the electronic key.
To take out the mechanical key,
slide the release lever and
take the key out.
The mechanical key can only be
inserted in one direction, as the key
only has grooves on one side. If the
key cannot be inserted in a lock cyl-
inder, turn it over and re-attempt to
insert it.
After using the mechanical key,
store it in the electronic key. Carry
the mechanical k
ey together with
the electronic key. If the electronic
key battery is dep leted or the entry
function does not operate properly,
you will need the m echanical key.
(  P.482)
■When required to leave the
vehicle’s key with a parking
attendant
Turn the trunk ope ner main switch
off ( P.135) and lock the glove box (
 P.358) as circumstances
demand.
Remove the mechanical key for
your own use and p rovide the atten-
dant with the elec tronic key only.
■If you lose your mechanical
keys
 P.481
■If a wrong key is used
The key cylinder rotates freely, iso-
lated from the internal mechanism.
Using the mechanical key

1294-2. Opening, closing and locking the doors and trunk
Owners Manual_USA_M62064_en
4
Before driving
Replace the key battery with a new
one if it is depleted. ( P.436)
■If the 12-volt battery is dis-
charged
The doors cannot be locked and
unlocked using the smart key sys-
tem or wireless remote control. Lock
or unlock the doors using the
mechanical key. ( P.483)
■Rear seat reminder function
●In order to remind you not to for-
get luggage, etc., in the rear seat,
when the power switch is turned to
OFF after any of the following con-
ditions are met, a buzzer will
sound and a message will be dis-
played on the multi-information
display for approximately 6 sec-
onds.
• The fuel cell system is started within 10 minutes after opening
and closing a rear door.
• A rear door has been opened and closed after the fuel cell system
was started.
However, if a rear door is opened
and then closed within approxi-
mately 2 seconds , the rear seat
reminder function may not operate.
●The rear seat reminder function
determines that luggage, etc., has
been placed in a rear seat based
on opening and closing of a rear
door. Therefore, depending on the
situation, the rear seat reminder
function may not operate and you
may still forget luggage, etc., in
the rear seat, or it may operate
unnecessarily.
●The rear seat reminder function
can be enabled/disabled.
(  P.512)
■Customization
Some functions can be customized.
(  P.512)
WARNING
■To prevent an accident
Observe the following precautions
while driving the vehicle.
Failure to do so may result in a
door opening and an occupant
falling out of the vehi cle, resulting
in death or serious injury.
●Ensure that all doors are prop-
erly closed and locked.
●Do not pull the inside handle of
the doors while driving.
Be especially careful for the front
doors, as the doors may be
opened even if the inside lock but-
tons are in locked position.
●Set the rear door child-protector
locks when children are seated
in the rear seats.
■When opening or closing a
door
Check the surroundings of the
vehicle such as wh ether the vehi-
cle is on an incline, whether there
is enough space for a door to
open and whether a strong wind
is blowing. When opening or clos-
ing the door, hold the door handle
tightly to prepare for any unpre-
dictable movement.

1354-2. Opening, closing and locking the doors and trunk
Owners Manual_USA_M62064_en
4
Before driving
■Using the mechanical key
The trunk can be also opened using
the mechanical key. ( P.483)
■If the smart key system or the
wireless remote control does
not operate properly
Use the mechanical key to unlock
the trunk. ( P.483)
Replace the key battery with a new
one if it is depleted.
■Open door warning buzzer
 P. 1 3 0
■Customization
Some functions can be customized.
(  P.512)
The trunk opener switch can be
temporarily disabled to protect
luggage stored in the trunk
against theft.
Turn the main switch in the
glove box off to disable the trunk
opener. On
Off
The trunk lid cannot be opened
even with the wireless remote con-
trol or entry function.
■When leaving a key to the vehi-
cle with a parking attendant
 P.126
Luggage security system

1374-2. Opening, closing and locking the doors and trunk
Owners Manual_USA_M62064_en
4
Before driving
●When an exterior alarm sounds
once for 5 seconds
●When an interior alarm sounds
continuously
■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 Toy-
ota dealer immediately.
■If “Key Detected in Vehicle” is
shown on the multi-information
display
An attempt was m ade to lock the
doors using the smart key system while the electronic key was still
inside the vehicle. Retrieve the elec-
tronic key from the vehicle and lock
the doors again.
■Battery-saving function
The battery-saving function will be
activated in ord er to prevent the
electronic key battery and the 12-
volt battery from being discharged
while the vehicle is not in operation
for a long time.
●In the following situations, the
smart key system may take some
time to unlock the doors.
• The electronic key has been left in an area of approxi mately 6 ft. (2
m) of the outside of the vehicle for
10 minutes or longer.
• The smart key system has not been used for 5 days or longer.
●If the smart key system has not
been used for 14 days or longer,
the doors cannot be unlocked at
any doors except the driver’s door.
In this case, take hold of the
driver’s door handle, or use the
wireless remote c ontrol or the
mechanical key, to unlock the
doors.
■Turning an electronic key to
battery-saving mode
●When battery-saving mode is set,
battery depletion is minimized by
stopping the electronic key from
receiving radio waves.
Press twice while pressing and
holding . Confirm that the elec-
tronic key indicator flashes 4 times.
While the battery-saving mode is
set, the smart key system cannot be
used. To cancel the function, press
any of the electronic key buttons.
SituationCorrection procedure
An attempt was
made to lock the
vehicle while a door was open.Close all of the doors
and lock the
doors again.
The trunk was closed while the electronic key was still inside
the trunk and all the doors were locked.Retrieve the electronic
key from the trunk and close the trunk lid.
SituationCorrection procedure
The power switch
was turned to ACC while the driver’s
door was open (The driver’s door was
opened when the
power switch was in ACC).
Turn the power
switch off
and close
the driver’s door.
The power switch
was turned off while
the driver’s door was open.Close the driver’s door.

1384-2. Opening, closing and locking the doors and trunk
Owners Manual_USA_M62064_en
●Electronic keys that will not be
used for long periods of time can
be set to the battery-saving mode
in advance.
■Conditions affecting operation
The smart key system uses weak
radio waves. In the following situa-
tions, the communication between
the electronic key and the vehicle
may be affected, preventing the
smart key system, wireless remote
control and immobilizer system from
operating properly. (Ways of coping:
 P.482)
●When the electronic key battery is
depleted
●Near a TV tower, electric power
plant, gas station , radio station,
large display, airpo rt or other facil-
ity that generates strong radio
waves or electrical noise
●When carrying a portable radio,
cellular phone, cordless phone or
other wireless communication
device
●When the electronic key is in con-
tact with, or is covered by the fol-
lowing metallic objects
• Cards to which al uminum foil is
attached
• Cigarette boxes that have alumi- num foil inside
• Metallic wallets or bags
• Coins
• Hand warmers made of metal
• Media such as CDs and DVDs
●When other wireless keys (that
emit radio waves) are being used
nearby
●When carrying the electronic key
together with the following devices that emit radio waves
• Another electronic key or a wire- less key that emits radio waves
• Personal computers or personal digital assistants (PDAs)
• Digital audio players
• Portable game systems
●If window tint wit h a metallic con-
tent or metallic objects are
attached to the rear window
●When the electronic key is placed
near a battery charger or elec-
tronic devices
●When the vehicle is parked in a
pay parking spot where radio
waves are emitted.
■Note for the entry function
●Even when the electronic key is
within the effective range (detec-
tion areas), the system may not
operate properly in the following
cases:
• The electronic key is too close to the window or outside door han-
dle, near the ground, or in a high
place when the doors are locked
or unlocked.
• The electronic key is near the ground or in a high place, or too
close to the center of the rear
bumper when the trunk is opened.
• The electronic key is on the instru- ment panel, rear package tray or
floor, or in the door pockets or
glove box when the fuel cell sys-
tem is started or power switch
modes are changed.
●Do not leave the electronic key on
top of the instrument panel or near
the door pockets when exiting the
vehicle. Depending on the radio
wave reception conditions, it may
be detected by the antenna out-
side the cabin and the doors will
become lockable from the outside,
possibly trapping the electronic
key inside the vehicle.
●As long as the electronic key is
within the effective range, the
doors may be locked or unlocked
by anyone. However, only the

1394-2. Opening, closing and locking the doors and trunk
Owners Manual_USA_M62064_en
4
Before driving
doors detecting the electronic key
can be used to unl ock the vehicle.
●Even if the electronic key is not
inside the vehicle, it may be possi-
ble to start the fuel cell system if
the electronic key is near the win-
dow.
●The doors may unlock or lock if a
large amount of water splashes on
the door handle, such as in the
rain or in a car wash, when the
electronic key is within the effec-
tive range. (The doors will auto-
matically be locked after
approximately 60 seconds if the
doors are not opened and closed.)
●If the wireless remote control is
used to lock the doors when the
electronic key is near the vehicle,
there is a possib ility that the door
may not be unlocke d by the entry
function. (Use the wireless remote
control to unloc k the doors.)
●Touching the door lock sensor
while wearing gloves may delay or
prevent lock operation.
●When the lock op eration is per-
formed using the lock sensor, rec-
ognition signals will be shown up
to two consecutive times. After
this, no recogniti on signals will be
given.
●If the door handle becomes wet
while the electronic key is within
the effective ran ge, the door may
lock and unlock repeatedly. In this
case, follow the fo llowing correc-
tion procedures to wash the vehi-
cle:
• Place the electronic key in a loca- tion 6 ft. (2 m) or more away from
the vehicle. (Take care to ensure
that the key is not stolen.)
• Set the electronic key to battery- saving mode to disable the smart
key system. ( P.137)
●If the electronic key is inside the
vehicle and a door handle
becomes wet during a car wash, a
message may be shown on the
multi-informatio n display and a buzzer will sound outside the vehi-
cle. To turn off the alarm, lock all
the doors.
●The lock sensor may not work
properly if it comes into contact
with ice, snow, m
ud, etc. Clean
the lock sensor and attempt to
operate it again.
●A sudden approach to the effec-
tive range or door handle may pre-
vent the doors from being
unlocked. In this case, return the
door handle to the original position
and check that t he doors unlock
before pulling the door handle
again.
●If there is another electronic key in
the detection area, it may take
slightly longer to unlock the doors
after the door handle is gripped.
■When the vehicle is not driven
for extended periods
●To prevent theft of the vehicle, do
not leave the electronic key within
6 ft. (2 m) of the vehicle.
●The smart key system can be
deactivated in advance.
●Setting the electronic key to bat-
tery-saving mode helps to reduce
key battery depletion. ( P.137)
■To operate the system properly
●Make sure to carry the electronic
key when operating the system.
Do not get the electronic key too
close to the vehicle when operat-
ing the system from the outside of
the vehicle.
Depending on the position and hold-
ing condition of the electronic key,
the key may not be detected cor-
rectly and the system may not oper-
ate properly. (The alarm may go off
accidentally, or the door lock pre-
vention function m ay not operate.)
●Do not leave the electronic key
inside the trunk.
The key confinement prevention
function may not operate, depend-