battery TOYOTA MIRAI 2017 1.G User Guide

912. Fuel cell vehicle
2
Fuel cell system
MIRAI_OM_USA_OM62023U
WARNING
■Tailpipe
● Do not directly touch the water or steam coming out of the tailpipe. Doing
so may cause low-temperature burns.
● The fuel cell vehicle generates water during power generation. The gener-
ated water discharged from the tailpipe 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 pur-
chase of a new vehicle or after an extended period of non-use, but this is
not a malfunction. Also, the odor is harmless but it may be unpleasant, so
do not breathe in the exhaust.
■ High-voltage and high-temperature precautions
This vehicle is equipped with a high-voltage system. Follow the instructions
below as high-voltages 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 motor compartment will become hot during
operation. Be careful of both the high-voltage and high-temperature, and
always obey the warning labels on the vehicle.
●Never touch the service plugs that are
installed on the fuel cell stack and the
traction battery. The service plugs are
used to block high-voltages from the
fuel cell stack and the traction battery
during maintenance or repair at your
Toyota dealer.

922. Fuel cell vehicle
MIRAI_OM_USA_OM62023U
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 serious injury.
● Stop the vehicle in a safe place to prevent subsequent accidents. 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 warning 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 connectors.
● 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.
● If a vehicle fire occurs, extinguish it with a Class A, B, or C fire extin-
guisher. If using water, apply a large amount from a hydrant.
● In case of a vehicle fire, the hydrogen gas in the hydrogen tanks is
released via the hydrogen tank valves toward the rear of the vehicle
angled downward, in order to reduce the damage to the hydrogen tanks.
Keep away from the vehicle.
● 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 motor) may
continue to generate electricity. This may cause a fire.

932. Fuel cell vehicle
2
Fuel cell system
MIRAI_OM_USA_OM62023U
WARNING
■Traction battery
● Never resell, transfer, or modify the traction battery. To prevent 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 vehicle or modified
in any way, accidents, such as electric shock, heat generation, smoke
generation, ignition, explosion and electrolyte leakage may occur.
In particular, reselling or transferri ng 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 high-voltage
parts, cables, or their connectors are touched. When disposing of your
vehicle, the traction battery must be disposed by your Toyota dealer, 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 injury.
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-information dis-
play. Have the vehicle inspected at your Toyota dealer.
● Do not place objects where the air intake vent will be obstructed. 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 inspected at your
Toyota dealer.

1053. Instrument cluster
3
Instrument cluster
MIRAI_OM_USA_OM62023U
Power meter
Current fuel consumption
Traction battery status
■The meters and display illuminate when
The power switch is in ON mode.
■ Instrument panel brightness adjustment
The instrument panel brightness levels when the tail lights are on and off can
be adjusted individually. However, when the surroundings are bright (daytime,
etc.), turning on the tail lights will not change the instrument panel brightness.
At this time, any adjustments made to the instrument panel brightness levels
will be applied to both settings at once.

1083. Instrument cluster
MIRAI_OM_USA_OM62023U
Settings display
When using each equipment, it is possible to toggle the switch and
change the settings of the meter display. • Intuitive parking assist ( →P. 223)
• BSM (Blind Spot Monitor) ( →P. 245)
•Clock ( →P. 280)
• Customize ( →P. 439)
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, pr ess or of the meter control
switches ( →P. 108), 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

1093. Instrument cluster
3
Instrument cluster
MIRAI_OM_USA_OM62023U
These images are examples only, and may vary slightly from actual
conditions.
When the vehicle is powered by the fuel cell
stack and traction battery
When the vehicle is charging the traction bat-
tery
When there is no energy flow
Traction battery status
LowFull

1103. Instrument cluster
MIRAI_OM_USA_OM62023U■
Fuel cell system indicator and ECO Score
The output power of the fuel cell system, regeneration level display,
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 dr iving range is being exceeded.
ECO Score
Displays the driving conditions in 5 stages, which are separated
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 driving 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 energy.

1143. Instrument cluster
MIRAI_OM_USA_OM62023U
■Suspension of the settings display
In the following situations, the settings display using the meter control
switches will be suspended.
●When a warning message appears on the multi-information display
● When the vehicle begins to move
■ When the 12-volt battery terminal is disconnected and reconnected
The following data is reset when the 12-volt battery terminal is disconnected
and reconnected.
●1-minute fuel consumption
● 5-minute fuel consumption
● Driving time
● Average vehicle speed
● Average fuel consumption
■ Liquid crystal display
→P. 106
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.

1184-1. Key information
MIRAI_OM_USA_OM62023U■
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 when the fuel
cell system stops. ( →P. 376)
● 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. 353)
• The smart key system or the wireless remote control does not operate.
• 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 appl iances 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. 353
■ 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.

1214-2. Opening, closing and locking the doors
4
Operation of each component
MIRAI_OM_USA_OM62023U
■Operation signals
Doors:
A buzzer sounds and the emergency flashers flash to indicate that 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 the vehicle is
unlocked, the security feature automatically locks the vehicle again.
■ When the door cannot be locked by th e 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 fully 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. 74)
■ 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. 398)
Replace the key battery with a new one if it is depleted. ( →P. 353)
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.