battery capacity TOYOTA MIRAI 2018 Owners Manual (in English)

4048-2. Steps to take in an emergency
MIRAI_OM_USA_OM62025U●
When the 12-volt battery is reconnected, start the fuel cell sy stem, depress
the brake pedal, and confirm that it is possible to shift into each shift posi-
tion.
● If the battery is removed or the terminals disconnected without operating the
water release function during cold weather, the vehicle may not start due to
the fuel cell system being frozen. To prevent this, operate the water release
function before removing the battery or disconnecting the termi nals.
( P. 176)
■ When exchanging the 12-volt battery
Use a Central Degassing type 12-volt battery (Japanese Industri al Stan-
dards). Also, use 12-volt batteries with case sizes similar to one prior the
exchange and an equivalent 20 hour rate capacity (20HR) or grea ter.
• If the sizes differ, the 12-volt battery cannot be properly se cured.
• If the 20 hour rate capacity is low, even if the time period w here the vehicle
is not used is a short time, the 12-volt battery may discharge and fuel cell
system may not be able to start.
For details, consult your Toyota dealer.
WARNING
■ Avoiding 12-volt batte ry fires or explosions
Observe the following precautions to prevent accidentally ignit ing the flam-
mable gas that may be emitted from the 12-volt battery:
● Make sure each jumper cable is connected to the correct terminal and that
it is not unintentionally in contact with any other than the in tended terminal.
● Do not allow the other end of the jumper cable connected to the “+” termi-
nal to come into contact with any other parts or metal surfaces in the area,
such as brackets or unpainted metal.
● Do not allow the + and - clamps of the jumper cables to come in to contact
with each other.
● Do not smoke, use matches, cigarette lighters or allow open fla me near
the 12-volt battery.

4189-1. Specifications
MIRAI_OM_USA_OM62025U*: 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 (t
raction 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)
Quantity 34 modules
Overall voltage 244.8 V

4209-1. Specifications
MIRAI_OM_USA_OM62025U
*: The fluid capacity is a reference quantity. If replacement is necessary, contact your Toyota dealer.
*1: Minimum pedal clearance when depressed with a force of 44.1 lb f (196 N,
20.0 kgf) while the fuel cell system is operating
*2: Parking brake pedal travel when depressed with a force of 67.5 lbf (300 N,
31.0 kgf).
Electrical system
12-volt battery
Open voltage at
68 F (20 C):12.6  12.8 V Fully charged
12.2  12.4 V Half charged
11 . 8  12.0 V Discharged
(Voltage checked 20 minutes after the fuel cell
system and all lights are turned off)
Charging rates5 A max.
Transmission
Fluid capacity*4.4 qt. (4.2 L, 3.7 Imp.qt.)
Fluid type Toyota Genuine ATF WS
NOTICE
■Transmission fluid type
Using transmission fluid other than “Toyota Genuine ATF WS” may ulti-
mately damage the transmission of your vehicle.
Brakes
Pedal clearance*12.95 in. (75 mm) Min.
Pedal free play 0.04  0.24 in. (1  6 mm)
Brake pad wear limit0.04 in. (1.0 mm)
Parking brake lining wear limit0.04 in. (1.0 mm)
Parking brake pedal travel*27  10 clicks
Fluid type SAE J1703 or FMVSS No.116 DOT 3

4299-1. Specifications
MIRAI_OM_USA_OM62025U
9
Vehicle specifications
Production options
weight
The combined weight of installed regular pro-
duction options weighing over 5 lb. (2.3 kg) in
excess of the standard items which they
replace, not previously considered in curb
weight or accessory weight, including heavy
duty brakes, ride levelers, roof rack, heavy
duty 12-volt battery, and special trim
Rim
A metal support for a tire or a tire and tube
assembly upon which the tire beads are
seated
Rim diameter
(Wheel diameter)Nominal diameter of the bead seat
Rim size designationRim diameter and width
Rim type designationThe industry manufacturer’s designation for a
rim by style or code
Rim widthNominal distance between rim flanges
Vehicle capacity
weight (Total load
capacity)The rated cargo and l uggage load plus 150 lb.
(68 kg) times the vehicle’s designated seating
capacity
Vehicle maximum load
on the tire
The load on an individual tire that is deter-
mined by distributing to each axle its share of
the maximum loaded vehicle weight, and
dividing by two
Vehicle normal load on
the tire
The load on an individual tire that is deter-
mined by distributing to each axle its share of
curb weight, accessory weight, and normal
occupant weight (distributed in accordance
with Table 1
* below), and dividing by two
Weather sideThe surface area of the rim not covered by the
inflated tire
Bead
The part of the tire that is made of steel wires,
wrapped or reinforced by ply cords and that is
shaped to fit the rim
Bead separationA breakdown of the bond between compo-
nents in the bead
Tire related termMeaning

450Alphabetical index
MIRAI_OM_USA_OM62025U
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....................... 252
Warning message ................. 376
Battery (traction battery)..... 78, 83 Air intake vent ......................... 85
Charging ................................. 81
Location ............................ 78, 83
Warning message ................. 376
Blind Spot Monitor (BSM) ....... 244 Blind Spot Monitor function ... 246
Rear Crossing Traffic Alert function ............................... 250
Bluetooth
®*
Audio system*
Hands-free system (for cellular phone)
*
Navigation system*
Bottle holders .......................... 274
Brake Fluid ...................................... 420
Parking brake........................ 186
Regenerative braking.............. 81
Warning light ......................... 369
Brake assist ............................. 231
Break-in tips ............................ 160
Brightness control Instrument panel light
control................................. 104
BSM (Blind Spot Monitor) ....... 244 Blind Spot Monitor function ... 246
Rear Cross Traffic Alert
function ............................... 249 Care .................................. 306, 310
Aluminum wheels ................. 307
Exterior ................................. 306
Interior .................................. 310
Seat belts.............................. 311
Cargo capacity......................... 169
CD player
*
Chains ...................................... 253
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, 405
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 ....... 265
Trunk precautions ................. 129
BC

453Alphabetical index
MIRAI_OM_USA_OM62025U
Flat tire...................................... 381
Floor mats .................................. 26
FluidBrake .................................... 420
Transmission ........................ 420
Washer ................................. 327
Front interior lights ................. 268 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 ......................... 266
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_OM62025U
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 ................................. 271
Grocery bag hooks .................. 275 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 ............ 265
Heaters Automatic air conditioning system .......... ...................... 256
Heated steering wheel .......... 265
Outside rear view mirrors ..... 259
Seat heaters ......................... 266
High mounted stoplight
Replacing light bulbs ............ 358
High-voltage components ........ 83
Hill-start assist control ........... 231
Hood ......................................... 320 Warning message................. 376
Hooks
Coat hooks ........................... 279
Grocery bag hooks ............... 275
Retaining hooks (floor mat) .... 26
Horn .......................................... 147
Hydrogen detectors .................. 87
Hydrogen-related components............................. 82
Hydrogen tanks ......................... 86 Capacity................................ 418
Location ............................ 78, 82
G
H

455Alphabetical index
MIRAI_OM_USA_OM62025U
IdentificationVehicle .................................. 417
Illuminated entry system ........ 269
Immobilizer system ................... 72
Indicators ................................. 100
Initialization Ion filter ................................. 439
Power windows ..................... 155
Inside rear view mirror ............ 149
Instrument panel light control .................................... 104
Interior lights............................ 267 Switch ................................... 268
Wattage ................................ 421
Intuitive parking assist............ 223
Inverter coolant Capacity ................................ 419
Checking ............................... 324
Ion filter ...................................... 87 Jack
Positioning a floor jack.......... 321
Vehicle-equipped
jack ............................. 339, 383
Jack handle ...................... 339, 383
Jam protection function
Power window ...................... 155
Keyless entry Smart key system ......... 120, 126
Wireless remote
control ........................ 120, 126
Keys .......................................... 116
Battery-saving function ......... 133
Electronic key ....................... 116
If the electronic key does not operate properly ................. 398
If you lose your keys ..... 117, 119
Key number plate ................. 116
Keyless entry ................ 120, 126
Mechanical key ..................... 117
Power switch ........................ 172
Replacing the battery............ 353
Warning buzzer .................... 132
Wireless remote control ........ 116
Knee airbags .............................. 36
IJ
K
*: Refer to the “NAVIGATION SYSTEM OWNER’S MANUAL”.

458Alphabetical index
MIRAI_OM_USA_OM62025U
Radar cruise control (dynamic radar cruise control) ............. 203
Radiator .................................... 325
Radio
*
Rear Crossing Traffic Alert ..... 244
Rear interior lights................... 268 Wattage ................................ 421
Rear side marker lights ........... 187
Light switch ........................... 187
Replacing light bulbs............. 358
Rear turn signal lights............. 185
Replacing light bulbs............. 358
Turn signal lever ................... 185
Rear view mirror
Inside rear view mirror .......... 149
Outside rear view mirrors...... 151
Rear view monitor system
*
Rear window defogger ............ 259
Refueling .................................. 198 Capacity ................................ 418
Fuel types ............................. 418
Opening the fuel door ........... 200
Regenerative braking ................ 81
Replacing
Electronic key battery ........... 353
Fuses .................................... 355
Light bulbs ............................ 358
Tires ...................................... 339
Reporting safety defects for U.S. owners ...................... 444
Road accident cautions ............ 92 Safety Connect ........................ 299
Seat belt reminder light .......... 371
Seat belts ................................... 30
Adjusting the seat belt ............ 31
Automatic Locking Retractor (ALR) .................... 32
Child restra int system
installation ............................ 56
Cleaning and maintaining the seat belt........................ 311
Emergency Locking Retractor
(ELR) .................................... 32
How to wear your seat belt ..... 30
How your child should wear the seat belt.......................... 32
Pregnant women, proper seat belt use ......................... 33
Reminder light and buzzer.... 371
Seat belt extender .................. 32
Seat belt pretensioners........... 31
SRS warning light ................. 370
Seat heaters ............................. 266
Seat position memory ............. 140
Seating capacity ...................... 169
RS

461Alphabetical index
MIRAI_OM_USA_OM62025U
Tire pressure warning systemFunction ................................ 333
Installing tire pressure
warning valves
and transmitters.................. 333
Registering ID codes ............ 333
Warning light ......................... 371
Tires .......................................... 332
Chains................................... 253
Checking ............................... 332
Emergency tire puncture repair kit............................. 383
If you have a flat tire ............. 381
Inflation pressure .......... 346, 421
Information ............................ 422
Replacing .............................. 339
Rotating tires......................... 332
Size ....................................... 421
Snow tires ............................. 252
Tire pressure warning system ......... ....................... 333
Warning light ......................... 371
Tools ................................. 339, 383
Top tether strap ......................... 69
Total load capacity .................. 169
Towing Dinghy towing ....................... 171
Emergency towing ................ 362
Trailer towing ........................ 170 TRAC (Traction Control) ......... 231
Traction battery ......................... 83
Air intake vent ......................... 85
Charging ................................. 81
Location ............................ 78, 83
Warning message................. 376
Traction battery air intake vent........................................... 85
Traction Control (TRAC) ......... 231
Traction motor (electric motor) Location ............................ 78, 83
Specification ......................... 418
Trailer towing .......................... 170
Transmission ........................... 179
Trip meters ............................... 102
Trunk ........................................ 126 Grocery bag hooks ............... 275
Internal trunk release lever ... 128
Luggage security system ...... 127
Smart key system ................. 126
Trunk features ...................... 275
Trunk grip ............................. 127
Trunk light ............................. 128
Trunk opener main switch .... 127
Trunk opener switch ............. 126
Wireless remote control ........ 126
Trunk light
Trunk light ............................. 128
Wattage ................................ 421
Turn signal lights .................... 185
Replacing light bulbs ............ 358
Turn signal lever ................... 185
*: Refer to the “NAVIGATION SYSTEM OWNER’S MANUAL”.