2017 TOYOTA MIRAI Heat

4068-2. Steps to take in an emergency
MIRAI_OM_USA_OM62023U
If your vehicle overheats
The following may indicate that your vehicle is overheating.
● The high coolant temperature warning light ( →P. 369) comes on
or flashes, or a loss of fuel ce ll system power is experienced. (For
example, the vehicle s peed does not increase.)
● “FC System Overheat Out put Power is Limited” (→P. 376) is dis-
played on the multi- information display
● Steam comes out from under the hood.
Label
Fuel cell stack coolant
reservoir Inverter coolant reservoir

4098-2. Steps to take in an emergency
MIRAI_OM_USA_OM62023U
8
When trouble arises
■If “FC System Overheat Output Power is Limited” is displayed
on the multi-information displayStop the vehicle in a safe place and turn off the air conditioning
system, and then stop the fuel cell system.
If you see steam or coolant leaks:
Carefully lift the hood after the steam subsides.
If you do not see steam or coolant leaks:
Carefully lift the hood.
After the fuel cell system has
cooled down, inspect the
hoses and radiator core
(radiator) for any leaks.
Inverter coolant radiator
Electric cooling fans
If a large amount of coolant
leaks, immediately contact
your Toyota dealer.
The inverter coolant level is
satisfactory if it is between
the “FULL” and “LOW” lines
on the reservoir.Inverter coolant reservoir
“FULL”
“LOW”
Add inverter coolant if neces-
sary.
Water can be used in an emer-
gency if inverter coolant is
unavailable.
1
2
3
4
5

4279-1. Specifications
MIRAI_OM_USA_OM62023U
9
Vehicle specifications
■Temperature A, B, C
The temperature grades are A (the highest), B, and C, representing
the tire’s resistance to the generation of heat and its ability to dissi-
pate heat when tested under co ntrolled conditions on a specified
indoor laboratory test wheel.
Sustained high temperature can c ause the material of the tire to
degenerate and reduce tire life, and excessive temperature can lead
to sudden tire failure.
Grade C corresponds to a level of performance which all passenger
car tires must meet under the Federal Motor Vehicle Safety Stan-
dard No. 109.
Grades B and A represent higher levels of performance on the labo-
ratory test wheel than the minimum required by law.
Warning: The temperature grades of a tire assume that it is properly
inflated and not overloaded.
Excessive speed, underinflation, or excessive loading, either sepa-
rately or in combination, can cause heat buildup and possible tire
failure.

4289-1. Specifications
MIRAI_OM_USA_OM62023U
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 item s 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

450Alphabetical index
MIRAI_OM_USA_OM62023U
Back-up lightsReplacing light bulb .............. 358
Battery (12-volt battery) .......... 328 Battery checking ................... 328
If the 12-volt battery is discharged .......................... 401
Preparing and checking before winter....................... 253
Warning message ................. 376
Battery (traction battery)..... 78, 83 Air intake vent ......................... 85
Charging ................................. 81
Location ............................ 78, 83
Warning message ................. 376
Blind Spot Monitor (BSM) ....... 245 Blind Spot Monitor function ... 247
Rear Crossing Traffic Alert function ............................... 251
Bluetooth
®*
Audio system*
Hands-free system (for cellular phone)
*
Navigation system*
Bottle holders .......................... 276
Brake Fluid ...................................... 420
Parking brake........................ 186
Regenerative braking.............. 81
Warning light ......................... 369
Brake assist ............................. 232
Break-in tips ............................ 160
Brightness control Instrument panel light
control................................. 104
BSM (Blind Spot Monitor) ....... 245 Blind Spot Monitor function ... 247
Rear Cross Traffic Alert
function ............................... 250 Care .................................. 306, 310
Aluminum wheels ................. 307
Exterior ................................. 306
Interior .................................. 310
Seat belts.............................. 311
Cargo capacity......................... 169
CD player
*
Chains ...................................... 254
Child restraint system............... 56 Booster seats installation........ 64
Convertible seats installation ............................ 63
Front passenger occupant classification syst em ............ 49
Infant seats definition.............. 58
Infant seats installation ........... 62
Installing a CRS to the passenger seat..................... 59
Installing CRS with LATCH anchors ................................ 67
Installing CRS with seat belts...................................... 62
Installing CRS with top tether
strap ..................................... 69
Child safety ................................ 55 12-volt battery precautions................. 330, 404
Airbag precautions.................. 39
Child restraint system ............. 56
How your child should wear the seat belt.......................... 32
Power window lock switch .... 154
Power window precautions ... 156
Rear door child-protectors .... 123
Removed electronic key battery precautions............. 354
Seat belt extender precautions........................... 35
Seat belt precautions .............. 34
Seat heater precautions ....... 267
Trunk precautions ................. 129
BC

451Alphabetical index
MIRAI_OM_USA_OM62023U
Child-protectors....................... 123
Cleaning ........................... 306, 310Aluminum wheels.................. 307
Exterior ................................. 306
Interior................................... 310
Seat belts .............................. 311
Clock ......................................... 280
Coat hooks ............................... 281
Condenser ................................ 325
Console box ............................. 273
Coolant Capacity ................................ 419
Checking ............................... 324
Preparing and checking Warning light ...................... 369
Cooling system ........................ 324 Fuel cell system
overheating......................... 406
Cruise control Dynamic radar cruise
control................................. 203
Cup holders.............................. 274
Curtain shield airbags ............... 37
Customizable features ............ 434
Daytime running light system .................................... 188
Defogger Outside rear view mirrors...... 261
Rear window ......................... 261
Windshield ............................ 261
Dimensions .............................. 416
Dinghy towing .......................... 171 Display
Drive information .................. 108
Dynamic radar cruise
control ................................ 203
Energy monitor ..................... 108
LDA
(Lane Departure Alert) ....... 216
Multi-information display ....... 107
Warning message ................ 376
Do-it-yourself maintenance .... 318
Door courtesy lights Location ................................ 269
Wattage ................................ 421
Door lock
Doors .................................... 120
Key ....................................... 398
Smart key system ................. 120
Wireless remote control ........ 120
Doors Automatic door locking
and unlocking systems ....... 123
Door glasses......................... 154
Door lock .............................. 122
Door windows ....................... 154
Open door warning buzzer ... 124
Open door warning light ....... 371
Outside rear view mirrors ..... 151
Rear door child-protector ...... 123
Drive information..................... 108
Driver’s seat belt reminder light ........................................ 371
Driver’s seat position memory .................................. 140
D
*: Refer to the “NAVIGATION SYSTEM OWNER’S MANUAL”.

452Alphabetical index
MIRAI_OM_USA_OM62023U
DrivingBreak-in tips .......................... 160
Correct driving posture ........... 28
Driving advice ......................... 94
Fuel cell vehicle driving
tips ........................................ 94
Procedures ........................... 158
Winter drive tips .................... 253
Driving position memory ........ 140 Memory recall function.......... 142
Dynamic radar cruise
control .................................... 203
ECB (Electronically Controlled Brake System) ...................... 232
Eco drive mode ........................ 181
EDR (Event data recorder) .......... 9
Electric motor (traction motor) Location ............................ 78, 83
Specification ......................... 418
Electric Power Steering (EPS)....................................... 233
Function ................................ 233
Warning light ......................... 370
Electronic key Battery-saving function ......... 133
If the electronic key does not
operate properly ................. 398
Replacing the battery ............ 353
Electronically Controlled Brake System (ECB) ............. 232
Emergency flashers ................ 360 Emergency, in case of
If a warning buzzer sounds... 369
If a warning light turns on ..... 369
If a warning message is displayed ............................ 376
If the 12-volt battery is discharged.......................... 401
If the electronic key does not
operate properly ................. 398
If the fuel cell system will not start ........................ 396
If you have a flat tire ............. 381
If you lose your keys ..... 117, 119
If you think something is wrong ................................. 368
If your vehicle becomes stuck ................................... 412
If your vehicle has to be stopped in an emergency ... 361
If your vehicle needs to be
towed.................................. 362
If your vehicle overheats....... 406
Emergency shut off system ..... 84
Emergency tire puncture
repair kit ................................. 381
Energy monitor ........................ 108
Enhanced VSC ......................... 232
EPS (Electric Power Steering) ..... 233 Function ................................ 233
Warning light......................... 370
Event data recorder (EDR).......... 9
E

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