coolant TOYOTA MIRAI 2020 (in English) Owner's Manual

4699-1. Specifications
MIRAI_OM_USA_OM62073U
9
Vehicle specifications
*: The fluid capacity is a reference quantity.If replacement is necessary, contact your Toyota dealer.
Cooling system
Capacity*
Fuel cell
stack 20.7 qt. (19.6 L, 17.2 Imp.qt.)
Inverter 5.0 qt. (4.7 L, 4.1 Imp.qt.)
Coolant
type
Fuel cell
stack“Toyota Genuine FC Stack Coolant”
• In order to safely cool the fuel cell stack,
which is at high voltages, the fuel cell stack
coolant is an exclusive high insulation prod-
uct.
• Never use water or other kinds of coolants as they will cause damage.
• Coolant changes are unnecessary.
• Do not reuse coolant that has been removed from the radiator.
• Coolant is colorless.
• Consult your Toyota dealer about replenish- ing or changing the fuel cell stack coolant.
Inverter Use either of the following:
• “Toyota Super Long Life Coolant”
• A similar high-quality ethylene glycol-based
non-silicate, non-amine, non-nitrite, and
non-borate coolant with long-life hybrid
organic acid technology
Do not use plain water alone.
NOTICE
The fuel cell stack coolant is exclusive for
fuel cell stack usage. Damage may occur
when water or any other type of coolant
is used, so never use any other fluid.
If the fuel cell stack coolant is low, imme-
diately contact your Toyota dealer.

4789-1. Specifications
MIRAI_OM_USA_OM62073U
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation pres-
sure
Tire pressure when the vehicle has been
parked for three hours or more, or has not
been driven more than 1 mile or 1.5 km under
that condition
Maximum inflation
pressureThe maximum cold inflated pressure to which
a tire may be inflated, shown on the sidewall
of the tire
Recommended infla-
tion pressureCold tire inflation pressure recommended by a
manufacturer
Accessory weight
The combined weight (in excess of those stan-
dard items which may be replaced) of trans-
mission, power steering, power brakes, power
windows, power seats, radio and heater, to the
extent that these items are available as fac-
tory-installed equipment (whether installed or
not)
Curb weight
The weight of a motor vehicle with standard
equipment, including the maximum capacity of
fuel, oil and coolant, and if so equipped, air
conditioning and additional weight optional
engine
Maximum loaded vehi-
cle weight
The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight
Normal occupant
weight150 lb. (68 kg) times the number of occupants
specified in the second column of Table 1
*
that follows
Occupant distributionDistribution of occupants in a vehicle as speci-
fied in the third column of Table 1
* below

515Alphabetical index
MIRAI_OM_USA_OM62073U
Child-protectors....................... 135
Cleaning ........................... 352, 356Aluminum wheels.................. 353
Exterior ................................. 352
Interior................................... 356
Seat belts .............................. 357
Clock ......................................... 328
Coat hooks ............................... 329
Condenser ................................ 371
Console box ............................. 321
Coolant Capacity ................................ 469
Checking ............................... 370
Preparing and checking Warning light ...................... 418
Cooling system ........................ 370 Fuel cell system
overheating......................... 457
Cruise control Dynamic radar cruise
control................................. 253
Cup holders.............................. 322
Curtain shield airbags ............... 37
Customizable features ............ 484 Daytime running light
system.................................... 203
Defogger Outside rear view mirrors ..... 309
Rear window ......................... 309
Windshield ............................ 309
Dimensions .............................. 466
Dinghy towing.......................... 185
Display Drive information .................. 118
Dynamic radar cruise control ................................ 253
Energy monitor ..................... 118
LDA (Lane Departure Alert with steering control) .......... 238
Multi-information display ....... 117
Parking Support Brake function
(for static objects) .............. 279
Warning message ................ 426
Do-it-yourself maintenance .... 364
Door courtesy lights Location ................................ 317
Wattage ................................ 471
Door lock Doors .................................... 132
Key ....................................... 449
Smart key system ................. 132
Wireless remote control ........ 132D
*: Refer to the “NAVIGATION SYSTEM OWNER’S MANUAL”.

518Alphabetical index
MIRAI_OM_USA_OM62073U
Fuel cell stack ............................ 94
Fuel cell stack coolantCapacity ................................ 469
Checking ............................... 370
Fuel cell system
Characteristics ........................ 86
Cold temperatures ................ 189
Coolant type.......................... 469
Indicators .............................. 109
Multi-information display ....... 117
Precautions ............................. 90
Starting the system ............... 186
Stopping the system ............. 187
Warning lights ....................... 107
Fuel cell system indicator....... 120
Fuel cell vehicles Characteristics ........................ 86
Charging the traction
battery .................................. 89
Driving advice ....................... 102
Emergency shut off system .... 92
Emergency start function ...... 448
Emergency stops .................. 409
Fuel ....................................... 468
Handling hydrogen gas ........... 98
High-voltage components ....... 91
Hydrogen gas ......................... 97
Hydrogen-related
components .......................... 90
If the 12-volt battery is
discharged .......................... 452
If the fuel cell system will not start .................................... 447
Maintenance, repair, recycling, and disposal ......... 89 Opening the fuel door ........... 213
Overheating .......................... 457
Power output restriction .......... 96
Power switch ........................ 186
Precautions............................. 90
Regenerative braking ............. 89
Road accident cautions ........ 100
Running out of fuel ................. 93
Service plugs .......................... 99
Sounds and vibrations ............ 88
Starting the system ............... 186
Traction battery air intake
vent ...................................... 93
Vehicle proximity notification
system .......... ..................... ... 92
Warning message................. 426
Water release ....................... 187
Fuel consumption ........... 121, 122
Fuel door .................................. 213 Refueling .............................. 213
Fuses ........................................ 402
Garage door opener ................ 343
Gauges ..................................... 111
Glove box ................................. 321
Grocery bag hooks.................. 325
G

519Alphabetical index
MIRAI_OM_USA_OM62073U
H2O switch ............................... 187
Hands-free system
(for cellular phone)
*
Head restraints ........................ 158
Headlights ................................ 201 Automatic High Beam system ......... ....................... 205
Light switch ........................... 201
Replacing light bulbs............. 405
Heated steering wheel............. 315
Heaters Automatic air conditioning system ......... ....................... 306
Heated steering wheel .......... 315
Outside rear view mirrors...... 309
Seat heaters ......................... 316
High mounted stoplight
Replacing light bulbs............. 405
High-voltage components ........ 91
Hill-start assist control............ 295
Hood ......................................... 366 Warning message ................. 426
Hooks
Coat hooks............................ 329
Grocery bag hooks ............... 325
Retaining hooks (floor mat)..... 26
Horn .......................................... 160
Hydrogen detectors................... 95
Hydrogen-related components ............................. 90
Hydrogen tanks ......................... 94 Capacity ................................ 468
Location ............................ 86, 90 Identification
Vehicle .................................. 467
Illuminated entry system ........ 319
Immobilizer system ................... 78
Indicators ................................. 109
Initialization Ion filter ................................. 490
Parking Support Brake function
(for static objects) ............... 283
Power windows..................... 168
Inside rear view mirror ............ 162
Instrument panel light control .................................... 113
Interior lights ........................... 317 Switch ................................... 318
Wattage ................................ 471
Intuitive parking assist ........... 265
Inverter coolant Capacity................................ 469
Checking............................... 370
Ion filter ...................................... 95
Jack Positioning a floor jack.......... 367
Vehicle-equipped jack ............................. 386, 434
Jack handle ...................... 386, 434
Jam protection function Power window ...................... 168
HI
J
*: Refer to the “NAVIGATION SYSTEM OWNER’S MANUAL”.

527Alphabetical index
MIRAI_OM_USA_OM62073U
Warning buzzersBrake system ....... ................. 418
Electric power steering system ......... ....................... 419
Intuitive parking assist .......... 269
Light reminder ....................... 204
Open door ............................. 420
Open trunk ............................ 420
Parking brake........................ 200
Parking Support Brake function
(for static objects) .............. 419
Seat belt reminder ................ 421
Warning lights
ABS....................................... 419
Brake Override System......... 421
Brake system ....... ................. 418
Charging system ................... 418
Drive-Start Control ................ 421
Electric power steering system ......... ....................... 419
High coolant temperature warning light ....................... 418
Hydrogen leak....................... 418
Low fuel level ........................ 420
Master warning light.............. 421
Parking brake........................ 420
Parking Support Brake function
(for static objects) ............... 419
Pre-collision syst em .............. 420
Seat belt reminder light ......... 421
Slip indicator ......................... 420
SRS ...................................... 419
Tire pressure......................... 421 Warning messages.................. 426
Washer ..................................... 210
Checking............................... 373
Preparing and checking before winter ...................... 301
Switch ................................... 210
Washing and waxing ............... 352
Water release ........................... 187
Weight ...................................... 466 Cargo capacity...................... 183
Load limits ............................ 183
Vehicle capacity weight ........ 466
Wheels ...................................... 396 Replacing.............................. 396
Size....................................... 471
Window glasses ...................... 167
Window lock switch ................ 167
Windows................................... 167 Power windows..................... 167
Rear window defogger.......... 309
Windshield wipers ................... 210
Winter driving tips ................... 301
Wireless remote control ......... 128 Battery-Saving Function ....... 145
Locking/Unlocking ................ 132
Replacing the battery............ 400
WMA disc
*
W
*: Refer to the “NAVIGATION SYSTEM OWNER’S MANUAL”.