3798-2. Steps to take in an emergency
MIRAI_OM_USA_OM62023U
8
When trouble arises
■If “[P] Switch Malfunction When Parking, Apply Parking Brake Securely
then See Owner’s Manual” is displayed
The shift position may not switch to P even though the P position switch is
pressed.
When parking, choose a flat surface and be sure to engage the parking
brake.
Have the vehicle inspected by your Toyota dealer immediately.
■ If “Shift System Malfunction See Owner’s Manual” is displayed
If left as is, the system may not operate properly and an unexpected hazard
or damage may occur.
Have the vehicle inspected by your Toyota dealer immediately.
■ If “Insufficient Aux Battery Charge When Parking, Apply Parking Brake
Securely then See Owner’s Manual” is displayed
●The parking lock mechanism may not operate.
● The power switch may not turn off. In that case, engage the parking brake
and the switch can be turned to off.
● Even after charging the 12-volt battery, the warning message may continue
to be displayed until the shift position is shifted from P to a position other
than P.
● The fuel cell system may not be able to be started.
When parking, choose a flat surface and be sure to engage the parking
brake.
Have the 12-volt battery charged or replaced.
■ If “Insufficient Aux Battery Charge Shift is Unavailable See Owner’s
Manual” is displayed
Due to the voltage of the 12-volt battery being in a declined condition, when
trying to shift the shift position the warning message is displayed.
Have the 12-volt battery charged or replaced.
■ If “Shifting Temporarily Unavailable Wait a Moment and Try Again” is
displayed
A warning message is displayed when the shift lever and P position switch
are repeatedly operated over a short period of time.
Shift the shift position after waiting for short amount of time.
■ If “Shifting to [Br] Mode Unavailable Shift to [D] once, then Shift to [Br]”
is displayed
When the shift position is in P or N, a warning message is displayed when try-
ing to shift to Br mode.
Shift to Br mode after the shift position had been set to D.
■ If “Shifted to [N] Position Shift to [D] once, then Shift to [Br]” is dis-
played
When the shift position is in R, a warning message is displayed when trying to
shift to Br mode.
The shift position is changed to N.
Shift to Br Mode after the shift position has been set to D.
4038-2. Steps to take in an emergency
MIRAI_OM_USA_OM62023U
8
When trouble arises
Close the exclusive jump starting terminal cover, reinstall the motor
cover and the fuse box cover to its original position.
Once the fuel cell system starts, have the vehicle inspected at your
Toyota dealer as soon as possible.
■ Starting the fuel cell system when the 12-volt battery is discharged
The fuel cell system cannot be started by push-starting.
■ To prevent 12-volt battery discharge
●Turn off the headlights and the audio system while the fuel cell system is off.
● Turn off any unnecessary electrical components when the vehicle is running
at a low speed for an extended period, such as in heavy traffic.
■ Charging the 12-volt battery
The electricity stored in the 12-volt battery will discharge gradually even when
the vehicle is not in use, due to natural discharge and the draining effects of
certain electrical appliances. If the vehicle is left for a long time, the 12-volt
battery may discharge, and the fuel cell system may be unable to start. \
(The
12-volt battery recharges automatically while the fuel cell system is operat-
ing.)
■ When the 12-volt battery is removed or discharged
●In some cases, it may not be possible to unlock the doors using the smart
key system when the 12-volt battery is discharged. Use the wireless remote
control or the mechanical key to lock or unlock the doors.
● The fuel cell system may not start on the first attempt after the 12-volt bat-
tery has recharged but will start normally after the second attempt. This is
not a malfunction.
● The power switch mode is memorized by the vehicle. When the 12-volt bat-
tery is reconnected, the system will return to the mode it was in before the
12-volt battery was discharged. Before disconnecting the 12-volt battery,
turn the power switch off.
If you are unsure what mode the power switch was in before the 12-volt bat-
tery discharged, be especially careful when reconnecting the 12-volt battery.
● If the 12-volt battery is depleted with the shift position in P, it will not be pos-
sible to shift the shift position other than P. In this case, the vehicle cannot
be towed without lifting both front wheels because the front wheels are
locked by the parking lock. ( →P. 363)
● When the 12-volt battery is reconnected, start the fuel cell system, depress
the brake pedal, and confirm that it is possible to shift into each shift posi-
tion.
● Make sure that the key is not inside the vehicle when recharging or replac-
ing the 12-volt battery. The key may be locked in the vehicle if the alarm is
activated. ( →P. 75)
9
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.
4209-1. Specifications
MIRAI_OM_USA_OM62023U
*: 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 lbf (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
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
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
461Alphabetical index
MIRAI_OM_USA_OM62023U
Tire pressure warning system
Function ................................ 333
Installing tire pressure
warning valves
and transmitters.................. 333
Registering ID codes ............ 333
Warning light ......................... 371
Tires .......................................... 332
Chains................................... 254
Checking ............................... 332
Emergency tire puncture repair kit............................. 382
If you have a flat tire ............. 381
Inflation pressure .......... 346, 421
Information ............................ 422
Replacing .............................. 339
Rotating tires......................... 332
Size ....................................... 421
Snow tires ............................. 253
Tire pressure warning system ......... ....................... 333
Warning light ......................... 371
Tools ................................. 339, 382
Top tether strap ......................... 69
Total load capacity .................. 169
Towing Dinghy towing ....................... 171
Emergency towing ................ 362
Trailer towing ........................ 170 TRAC (Traction Control) ......... 232
Traction battery ......................... 83
Air intake vent ......................... 85
Charging ................................. 81
Location ............................ 78, 83
Warning message................. 376
Traction battery air intake vent........................................... 85
Traction Control (TRAC) ......... 232
Traction motor (electric motor) Location ............................ 78, 83
Specification ......................... 418
Trailer towing .......................... 170
Transmission ........................... 179
Trip meters ............................... 102
Trunk ........................................ 126 Grocery bag hooks ............... 277
Internal trunk release lever ... 128
Luggage security system ...... 127
Smart key system ................. 126
Trunk features ...................... 277
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”.
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