2017 TOYOTA MIRAI hydrogen

3698-2. Steps to take in an emergency
MIRAI_OM_USA_OM62023U
8
When trouble arises
If a warning light turns on or a warning
buzzer sounds
Calmly perform the following actions if any of the warning lights
comes on or flashes. If a light comes on or flashes, but then
goes off, this does not necessarily indicate a malfunction in the
system. However, if this continues to occur, have the vehicle
inspected by your Toyota dealer.
Warning light and warning buzzer list
Warning lightWarning light/Details/Actions
Hydrogen leak warning light (warning buzzer) When a hydrogen gas leak is detected, a buzzer sounds,
a light comes on, and a warning message is displayed on
the multi-information display.
→ P. 8 5
Brake system warning light (warning buzzer)*1
Indicates that:
• The brake fluid level is low; or
• The brake system is malfunctioning
→ Immediately stop the vehicle in a safe place and con-
tact your Toyota dealer. Continuing to drive the vehi-
cle may be dangerous.
Charging system warning light
Indicates a malfunction in the vehicle’s charging system
→ Immediately stop the vehicle in a safe place and con-
tact your Toyota dealer.
High coolant temperature warning light
Indicates that the coolant temperature is abnormal
→P. 406
→ Immediately stop the vehicle in a safe place and con-
tact your Toyota dealer.
Brake system warning light
Indicates a malfunction in:
• The regenerative braking system; or
• The electronically controlled brake system
→ Have the vehicle inspected by your Toyota dealer
immediately.

4058-2. Steps to take in an emergency
MIRAI_OM_USA_OM62023U
8
When trouble arises
WARNING
■After recharging the 12-volt battery
Have the 12-volt battery inspected at your Toyota dealer as soon as possi-
ble.
If the 12-volt battery is deteriorating, continued use may cause the 12-volt
battery to emit a malodorous gas, which may be detrimental to the health of
passengers.
■ When exchanging the 12-volt battery
After exchanging, securely attach the exhaust hose and exhaust hole plug
to the exhaust hole of the exchanged 12-volt battery. If not properly
installed, gases (hydrogen) may leak into the vehicle interior, and there is
the possible danger of the gas igniting and exploding.
■ When replacing the 12-volt battery
→ P. 330
NOTICE
■ To prevent damaging the vehicle
The exclusive jump starting terminal is to be used when charging the 12-volt
battery from another vehicle in an emergency. It cannot be used to jump
start another vehicle.
■ When handling jumper cables
When connecting the jumper cables, ensure that they do not become entan-
gled in the cooling fans.

4189-1. Specifications
MIRAI_OM_USA_OM62023U*: This is the maximum possible fill amount. The actual fuel amount achieved
at hydrogen stations may be lower due to station capacity or station set-
tings.
Fuel
Fuel type Compressed hydrogen gas
Nominal working
pressure10150 psi (70 MPa, 714 kgf/cm2, 700 bar)
Hydrogen tanks’ fuel
capacity
(Reference)32.3 gal. (122.4 L, 26.9 Imp.gal.)
(Approximately 11.0 lb. [5 kg]
*)
Electric motor (traction motor)
Type
Permanent magnet synchronous motor
Maximum output 113 kW
Maximum torque 247 ft•lbf (335 N•m, 34.2 kgf•m)
Traction battery
TypeNickel-metal hydride battery
Voltage7.2 V/module
Capacity 6.5 Ah (3HR)
Quantity34 modules
Overall voltage 244.8 V

453Alphabetical index
MIRAI_OM_USA_OM62023U
Flat tire...................................... 381
Floor mats .................................. 26
FluidBrake .................................... 420
Transmission ........................ 420
Washer ................................. 327
Front interior lights ................. 270 Wattage ................................ 421
Front passenger occupant classification system .............. 49
Front seats ............................... 138
Adjustment ............................ 138
Cleaning................................ 310
Correct driving posture ........... 28
Driving position memory ....... 140
Head restraints ..................... 145
Power easy access system ......... ....................... 140
Seat heaters ......................... 268
Seat position memory ........... 140
Front side marker lights.......... 187 Light switch ........................... 187
Replacing light bulbs............. 358
Front turn signal lights ........... 185 Replacing light bulbs............. 358
Turn signal lever ................... 185
Fuel
Capacity ................................ 418
Fuel gauge ............................ 102
Hydrogen station information.......................... 464
Refueling............................... 198
Type .............................. 198, 418
Warning light ......................... 371
Fuel cell stack ............................ 86
Fuel cell stack coolant Capacity ................................ 419
Checking ............................... 324 Fuel cell system
Characteristics ........................ 78
Cold temperatures ................ 175
Coolant type ......................... 419
Indicators .............................. 100
Multi-information display ....... 107
Precautions............................. 82
Starting the system ............... 172
Stopping the system ............. 173
Warning lights ......................... 99
Fuel cell system indicator ...... 110
Fuel cell vehicles
Characteristics ........................ 78
Charging the traction battery .................................. 81
Driving advice ......................... 94
Emergency shut off system .... 84
Emergency start function ...... 397
Emergency stops .................. 361
Fuel....................................... 418
Handling hydrogen gas........... 90
High-voltage components ....... 83
Hydrogen gas ......................... 89
Hydrogen-related components.......................... 82
If the 12-volt battery is discharged.......................... 401
If the fuel cell system will not start ........................ 396
Maintenance, repair,
recycling, and disposal ......... 81
F

454Alphabetical index
MIRAI_OM_USA_OM62023U
Opening the fuel door ........... 198
Overheating .......................... 406
Power output restriction .......... 88
Power switch......................... 172
Precautions ............................. 82
Regenerative braking.............. 81
Road accident cautions .......... 92
Running out of fuel.................. 85
Service plugs .......................... 91
Sounds and vibrations ............ 80
Starting the system ............... 172
Traction battery air intake vent....................................... 85
Vehicle proximity notification
system ......... ......................... 84
Warning message ................. 376
Water release ....................... 173
Fuel consumption............ 111, 112
Fuel door .................................. 198 Refueling............................... 198
Fuses ........................................ 355
Garage door opener ................ 292
Gauges ..................................... 102
Glove box ................................. 273
Grocery bag hooks .................. 277 H
2O switch ............................... 173
Hands-free system
(for cellular phone)
*
Head restraints ........................ 145
Headlights ................................ 187 Automatic High Beam system .......... ...................... 190
Light switch ........................... 187
Replacing light bulbs ............ 358
Heated steering wheel ............ 267
Heaters Automatic air conditioning system .......... ...................... 258
Heated steering wheel .......... 267
Outside rear view mirrors ..... 261
Seat heaters ......................... 268
High mounted stoplight
Replacing light bulbs ............ 358
High-voltage components ........ 83
Hill-start assist control ........... 232
Hood ......................................... 320 Warning message................. 376
Hooks
Coat hooks ........................... 281
Grocery bag hooks ............... 277
Retaining hooks (floor mat) .... 26
Horn .......................................... 147
Hydrogen detectors .................. 87
Hydrogen-related components............................. 82
Hydrogen tanks ......................... 86 Capacity................................ 418
Location ............................ 78, 82
G
H

462Alphabetical index
MIRAI_OM_USA_OM62023U
USB port*
Vanity lightsVanity lights .......................... 279
Wattage ................................ 421
Vanity mirrors .......................... 279 Vanity lights .......................... 279
Vehicle data recording ................ 8
Vehicle identification number ................................... 417
Vehicle proximity notification system ...................................... 84
Vehicle Stability Control
(VSC) ...................................... 232
Voice command system
*
VSC (Vehicle Stabilit y Control) .... 232
Warning buzzers Brake system ....... ................. 369
Electric power steering
system ......... ....................... 370
Intuitive parking assist .......... 227
Light reminder ....................... 189
Open door ............................. 371
Open trunk ............................ 371
Parking brake........................ 186
Seat belt reminder ................ 371 Warning lights
ABS ...................................... 370
Brake Override System ........ 372
Brake system ....... ................. 369
Charging system................... 369
Drive-Start Control ................ 372
Electric power steering system .......... ...................... 370
High coolant temperature warning light ....................... 369
Hydrogen leak ...................... 369
Low fuel level ........................ 371
Master warning light ............. 371
Parking brake ....................... 371
Pre-collision system.............. 370
Seat belt reminder light......... 371
Slip indicator ......................... 370
SRS ...................................... 370
Tire pressure ........................ 371
Warning messages.................. 376
Washer ..................................... 195
Checking............................... 327
Preparing and checking before winter ...................... 253
Switch ................................... 195
Washing and waxing ............... 306
Water release ........................... 173
Weight ...................................... 416 Cargo capacity...................... 169
Load limits ............................ 169
Vehicle capacity weight ........ 416
U
V
W

464
MIRAI_OM_USA_OM62023U
HYDROGEN STATION INFORMATION
Auxiliary catch leverTrunk openerFuel door
P. 320 P. 126P. 200
Hood lock release
leverFuel door openerTire inflation pressure
P. 320 P. 200P. 421
Hydrogen tanks’ fuel
capacity (Reference)32.3 gal. (122.4 L, 26.9 Imp.gal.)
(Approximately 11.0 lb. [5 kg]
*)
*: This is the maximum possible fill amount. The
actual fuel amount achieved at hydrogen sta-
tions may be lower due to station capacity or
station settings.
Fuel type Compressed hydrogen gas P. 198, 418
Cold tire inflation
pressure P. 4 2 1