battery TOYOTA MIRAI 2019 (in English) User Guide

1002. Fuel cell vehicle
MIRAI_OM_USA_OM62054U(18MY)_O
M62048U(19MY)
WARNING
■Precautions in case of an accident
In the event of an accident, observe the following precautions. Failure to do
so can cause fire or electric shocks, resulting in death or ser ious injury.
● Stop the vehicle in a safe place to prevent subsequent accident s. Shift the
shift position to P and apply the parking brake.
● Check for hydrogen gas leakage.
Hydrogen leaks will cause a warning message to be shown on the multi-
information display. Larger leaks may also be audible.
● If a large amount of hydrogen gas leaking is noticed, turn off the power
switch, exit the vehicle, and stay far away from it. Display wa rning signs
and keep sources of fire away from the vehicle. If possible, get assistance.
When the above is done, immediately contact your Toyota dealer.
● Do not touch the high-voltage parts, cables (orange), or connec tors.
● If electric wires are exposed inside or outside your vehicle, an electric
shock may occur. Never touch exposed electric wires.
● If a fluid leak occurs, do not touch the fluid as it may be the strong alkaline
electrolyte from the traction battery. If it comes into contact with your skin
or eyes, wash it off immediately with a large amount of water, and seek
immediate medical attention.
● In case of a vehicle fire, the hydrogen gas in the hydrogen tan ks is
released via the hydrogen tank valves toward the rear of the ve hicle
angled downward, in order to reduce the damage to the hydrogen tanks.
Keep away from the vehicle.
● If a vehicle fire occurs, it can be extinguished with a Class A , B, or C fire
extinguisher. If using water, apply a large amount from a hydrant.
● If your vehicle needs to be towed, do so with the front wheels lifted. If the
wheels are touching the ground, the electric motor (traction mo tor) may
continue to generate electricity. This may cause a fire.

1012. Fuel cell vehicle
2
Fuel cell system
MIRAI_OM_USA_OM62054U(18MY)_O
M62048U(19MY)
WARNING
■Traction battery
● Never resell, transfer, or modify the traction battery. To prev ent accidents,
traction batteries that have been removed from disposed vehicle are col-
lected through Toyota dealers. Do not dispose of the traction battery your-
self.
If the traction battery is not properly collected, the following may occur,
resulting in death or serious injury:
• The traction battery may be illegally disposed or dumped, and it is haz-
ardous to the environment. Additionally, someone may touch a high-volt-
age part, resulting in an electric shock.
• The traction battery is intended to be used exclusively with your fuel cell vehicle. If the traction battery is used outside of your vehicl e or modified
in any way, accidents, such as electric shock, heat generation, smoke
generation, ignition, explosion and electrolyte leakage may occ ur.
In particular, reselling or transferring the traction battery exposes the
receiving party to risks of accidents as they may not be aware of these
dangers. Make sure to inform them of the contents of this Owner ’s Man-
ual.
● If your vehicle is disposed without the traction battery having been
removed, there is a danger of serious electric shock in case hi gh-voltage
parts, cables, or their connectors are touched. When disposing of your
vehicle, the traction battery must be disposed by your Toyota d ealer, or a
qualified service shop. If the traction battery is not disposed of properly, it
may cause electric shock that can result in death or serious in jury.
NOTICE
■Traction battery air intake vent
● If the traction battery output decreases due to the entry of dust or debris,
foreign material, a warning message is shown on the multi-infor mation dis-
play. Have the vehicle inspected at your Toyota dealer.
● Do not place objects where the air intake vent will be obstruct ed. This may
lead to a reduction in traction battery power output and damage .
● Clean the air intake vent regularly to prevent clogging.
● Do not allow water or objects to enter the air intake vent, as this may dam-
age the traction battery.
■ Traction Battery
Do not spill a large amount of water near the traction battery in the vehicle.
If water spills onto the traction battery, have the vehicle ins pected at your
Toyota dealer.

1153. Instrument cluster
3
Instrument cluster
MIRAI_OM_USA_OM62054U(18MY)_O
M62048U(19MY)
Traction battery status
■The meters and display illuminate when
The power switch is in ON mode.
■ Instrument panel bri ghtness adjustment
The instrument panel brightness levels when the tail lights are on and off can
be adjusted individually. However, when the surroundings are br ight (daytime,
etc.), turning on the tail lights will not change the instrumen t panel brightness.
At this time, any adjustments made to the instrument panel brig htness levels
will be applied to both settings at once.
■ Outside temperature display
●In the following situations, the correct outside temperature ma y not be dis-
played, or the display may take longer than normal to change.
• When stopped, or driving at low speeds (less than 16 mph [25 k m/h])
• When the outside temperature has changed suddenly (at the entr ance/
exit of a garage, tunnel, etc.)
● When “--” or “E” is displayed, the system may be malfunctioning .
Take your vehicle to your Toyota dealer.
■ Liquid crystal display
Small spots or light spots may appear on the display. This phen omenon is
characteristic of liquid crystal displays, and there is no prob lem continuing to
use the display.
■ Customization
The meter display can be customized on the multi-information di splay.
(Customizable features: P. 490)

1183. Instrument cluster
MIRAI_OM_USA_OM62054U(18MY)_O
M62048U(19MY)
The multi-information display is
operated using the meter control
switches.Select an item/change pages
Enter/Set
Return to the previous
screen
To toggle through the items, press or of the meter control
switches ( P. 118), select [drive information] on the multi-
information display, and press or .
■Energy monitor
Displays fuel cell system status.
Operating the meter control switches
Drive information
When the vehicle is powered by the fuel cell
stack
When the vehicle is powered by the traction
battery
When the vehicle is powered by the fuel cell
stack and traction battery

1193. Instrument cluster
3
Instrument cluster
MIRAI_OM_USA_OM62054U(18MY)_O
M62048U(19MY)
These images are examples only, and may vary slightly from actual
conditions.
When the vehicle is charging the traction bat-
tery
When there is no energy flow
Traction battery status
LowFull

1203. Instrument cluster
MIRAI_OM_USA_OM62054U(18MY)_O
M62048U(19MY)■
Fuel cell system indicator and ECO Score
The output power of the fuel cell system, regeneration level di splay,
and the ECO driving is scored and displayed.
Charge area
Shows that energy is being
recovered via the regenera-
tive brake.
Eco area
Shows that the vehicle is
being driven in an Eco-
friendly manner.
Power area
Shows that an Eco-friendly d riving range is being exceeded.
ECO Score
Displays the driving conditions in 5 stages, which are separate d
in the 3 patterns of ECO Start, ECO Cruise and ECO Stop. Also,
each time the vehicle is stopped , that number is displayed. (The
number for each take off is reset and not counted)
● By maintaining the indicator display in the ECO area or Charge
area, Eco-friendly dr iving is possible.
● Charge area indicates regeneration
* status. Regenerated energy
will be used to charge t he traction battery.
*: When used in this manual, “regeneration” refers to the conversion of
energy created by the movement of the vehicle into electrical e nergy.

1263. Instrument cluster
MIRAI_OM_USA_OM62054U(18MY)_O
M62048U(19MY)
■Setting items
● [Meter settings] items are not selectable while driving and cannot be
operated.
Also, the settings screen is temporarily canceled in the follow ing situations.
• A warning message is displayed.
• The vehicle starts off.
● Settings for functions not equipped to the vehicle are not disp layed.
● When a function is turned off, the related settings for that fu nction are not
selectable.
■ When the 12-volt battery terminal is disconnected and reconnect ed
The following data is reset when the 12-volt battery terminal i s disconnected
and reconnected.
● 1-minute fuel consumption
● 5-minute fuel consumption
● Driving time
● Average vehicle speed
● Average fuel consumption
■ Liquid crystal display
P. 115
NOTICE
■During setting up the display
To prevent 12-volt battery discharge, ensure that the fuel cell system is
operating while setting up the display features.

1304-1. Key information
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M62048U(19MY)■
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 wh en the fuel
cell system stops. ( P. 426)
● As the electronic key always receives radio waves, the battery will become
depleted even if the electronic key is not used. The following symptoms indi-
cate that the electronic key battery may be depleted. Replace the battery
when necessary. ( P. 400)
• The smart key system or the wireless remote control does not o perate.
• The detection area becomes smaller.
• The LED indicator on the key surface does not turn on.
● To avoid serious deterioration, do not leave the electronic key within 3 ft.
(1 m) of the following electrical 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. 400
■ Confirmation of the registered key number
The number of keys already registered to the vehicle can be confirmed. Ask
your Toyota dealer for details.
■ If a wrong key is used
The key cylinder rotates freely to isolate inside mechanism.

1334-2. Opening, closing and locking the doors
4
Operation of each component
MIRAI_OM_USA_OM62054U(18MY)_O
M62048U(19MY)
■Operation signals
Doors:
A buzzer sounds and the emergency flashers flash to indicate th at the doors
have been locked/unlocked. (Locked: Once; Unlocked: Twice)
Windows:
A buzzer sounds to indicate that the windows are opening.
■ Security feature
If a door is not opened within approximately 60 seconds after t he vehicle is
unlocked, the security feature automatically locks the vehicle again.
■ When the door cannot be locked by the lock sensor on the surface of the
door handle
■ Door lock buzzer
If an attempt to lock the doors is made when a door is not full y closed, a
buzzer sounds continuously for 5 seconds. Fully close the door to stop the
buzzer, and lock the doors once more.
■ Setting the alarm
Locking the doors will set the alarm system. ( P. 81)
■ If the smart key system or the wireless remote control does not operate
properly
Use the mechanical key to lock and unlock the doors. ( P. 449)
Replace the key battery with a new one if it is depleted. ( P. 400)
When the door cannot be locked even if
the lock sensor on the surface of the door
handle is touched by a finger, touch the
lock sensor with the palm.
When gloves are being worn, remove the
gloves.

1404-2. Opening, closing and locking the doors
MIRAI_OM_USA_OM62054U(18MY)_O
M62048U(19MY)
■Tr u n k l i g h t
The trunk light turns on when the trunk is opened.
■ Function to prevent th e trunk being locked with the electronic key inside
● When all doors are locked, closing the trunk lid with the elect ronic key left
inside the trunk will sound an alarm.
In this case, the trunk lid can be opened by pressing the trunk release but-
ton on the trunk lid.
● If the spare electronic key is put in the trunk with all the doors locked, the
key confinement prevention function is activated so the trunk can be
opened. In order to prevent theft, take all electronic keys wit h you when
leaving the vehicle.
● If the electronic key is put in the trunk with all the doors lo cked, the key may
not be detected depending on the location of the key and the su rrounding
radio wave conditions. In this case, the key confinement preven tion function
cannot be activated, causing the doors to lock when the trunk i s closed.
Make sure to check where the key is before closing the trunk.
● The key confinement prevention function cannot be activated if any one of
the doors is unlocked. In this case, open the trunk using the t runk opener
switch.
■ Internal trunk release lever
■ Using the mechanical key
The trunk can be also opened using the mechanical key. ( P. 449)
■ Open trunk warning buzzer
If the vehicle speed reaches 3 mph (5 km/h), the master warning light flashes
and a buzzer sounds to indicate that the trunk is not fully clo sed.
■ If the smart key system or the wireless remote control does not operate
properly
Use the mechanical key to unlock the trunk. ( P. 449)
Replace the key battery with a new one if it is depleted. ( P. 400)
■ When leaving a key to the vehicle with a parking attendant
P. 129
■ Customization
The trunk unlocking operation can be changed.
(Customizable features: P. 487)
The trunk lid can be opened by pulling the
glow-in-the-dark lever located on the
inside of the trunk lid upward.
The lever will continue to glow for some
time after the trunk lid is closed.