2020 TOYOTA MIRAI fuel

1755-1. Before driving
5
Driving
MIRAI_OM_USA_OM62073U
WARNING
Observe the following precautions.
Failure to do so may result in death or serious injury.
■When starting the vehicle
Always keep your foot on the brake pedal while stopped with the “READY”
indicator is illuminated. This prevents the vehicle from creepi ng.
■ When driving the vehicle
● Do not drive if you are unfamiliar with the location of the brake and accel-
erator pedals to avoid depressing the wrong pedal.
• Accidentally depressing the accelerator pedal instead of the b rake
pedal will result in sudden acceleration that may lead to an ac cident.
• When backing up, you may twist your body around, leading to di fficulty
in operating the pedals. Make sure to operate the pedals proper ly.
• Make sure to keep a correct driving posture even when moving t he
vehicle only slightly. This allows you to depress the brake and accelera-
tor pedals properly.
• Depress the brake pedal using your right foot. Depressing the brake
pedal using your left foot may delay response in an emergency, result-
ing in an accident.
● The driver should pay extra attention to pedestrians when the fuel cell sys-
tem is on. As there are no engine sounds, pedestrians may misju dge the
vehicle’s movement.
● During normal driving, do not turn off the fuel cell system. Tu rning the fuel
cell system off while driving will not cause loss of steering o r braking con-
trol, however, power assist to the steering will be lost. This will make it
more difficult to steer smoothly, so you should pull over and stop the vehi-
cle as soon as it is safe to do so.
In the event of an emergency, such as if it becomes impossible to stop the
vehicle in the normal way: P. 409
● Do not adjust the positions of the steering wheel, the seat, or the inside or
outside rear view mirrors while driving.
Doing so may result in a loss of vehicle control.
● Always check that all passengers’ arms, heads or other parts of their body
are not outside the vehicle.

1765-1. Before driving
MIRAI_OM_USA_OM62073U
WARNING
Observe the following precautions.
Failure to do so may result in death or serious injury.
■When driving the vehicle
● Do not drive in excess of the speed limit. Even if the legal sp eed limit per-
mits it, do not drive over 85 mph (140 km/h) unless your vehicl e has high-
speed capability tires. Driving over 85 mph (140 km/h) may resu lt in tire
failure, loss of control and possible injury. Be sure to consult a tire dealer
to determine whether the tires on your vehicle are high-speed c apability
tires or not before driving at such speeds.
■ When driving on slippery road surfaces
● Sudden braking, acceleration and steering may cause tire slippa ge and
reduce your ability to control the vehicle.
● Sudden acceleration or regenerative braking due to shifting cou ld cause
the vehicle to skid.
● After driving through a puddle, lightly depress the brake pedal to make
sure that the brakes are functioning properly. Wet brake pads m ay prevent
the brakes from functioning properly. If the brakes on only one side are wet
and not functioning properly, steering control may be affected.
■ When changing the shift position
● Do not let the vehicle roll backward while a forward driving position is
selected, or roll forward while the shift position is in R.
Doing so may result in an accident or damage to the vehicle.
● Do not shift the shift position to P while the vehicle is movin g.
Doing so can damage the transmission and may result in a loss o f vehicle
control.
● Do not shift the shift position to R while the vehicle is movin g forward.
Doing so can damage the transmission and may result in a loss o f vehicle
control.
● Do not shift the shift position to a driving position while the vehicle is mov-
ing backward.
Doing so can damage the transmission and may result in a loss o f vehicle
control.
● Shifting the shift position to N while the vehicle is moving wi ll disengage
the fuel cell system. Regenerative braking is not available with the fuel cell
system disengaged.
● Be careful not to shift the shift position with the accelerator pedal
depressed. Shifting the shift position to any position other th an P or N may
lead to unexpected rapid acceleration of the vehicle that may c ause an
accident and result in death or serious injury.
After shifting the shift position, make sure to check the current shift posi-
tion using the shift position indicator. ( P. 193)

1785-1. Before driving
MIRAI_OM_USA_OM62073U
WARNING
Observe the following precautions.
Failure to do so may result in death or serious injury.
■When the vehicle is parked
● Do not leave a door or window open if the curved glass is coate d with a
metallized film such as a silver-colored one. Reflected sunligh t may cause
the glass to act as a lens, causing a fire.
● Always apply the parking brake, shift the shift position to P, stop the fuel
cell system and lock the vehicle.
Do not leave the vehicle unattended while the “READY” indicator is illumi-
nated.
If the vehicle is parked with the shift position in P but the p arking brake is
not set, the vehicle may start to move, possibly leading to an accident.
■ When taking a nap in the vehicle
Always turn the fuel cell system off. Otherwise, if you accidentally move the
shift lever or depress the accelerator pedal, causing the vehic le to uninten-
tionally move, which can lead to an accident, resulting in deat h or serious
injury.
■ When braking
● When the brakes are wet, drive more cautiously.
Braking distance increases when the brakes are wet, and this ma y cause
one side of the vehicle to brake differently than the other sid e. Also, the
parking brake may not securely hold the vehicle.
● If the electronically controlled brake system does not operate, do not fol-
low other vehicles closely and avoid hills or sharp turns that require brak-
ing.
In this case, braking is still possible, but the brake pedal sh ould be
depressed more firmly than usual. Also, the braking distance wi ll increase.
Have your brakes fixed immediately.
● The brake system consists of 2 or more individual hydraulic systems; if
one of the systems fails, the other(s) will still operate. In t his case, the
brake pedal should be depressed more firmly than usual and the braking
distance will increase. Have your brakes fixed immediately.
NOTICE
■ When driving the vehicle
● Do not depress the accelerator and brake pedals at the same tim e during
driving, as this may restrain the fuel cell system output.
● Do not use the accelerator pedal or depress the accelerator and brake
pedals at the same time to hold the vehicle on a hill.
■ When parking the vehicle
Always set the parking brake, and shift the shift position to P . Failure to do
so may cause the vehicle to move or the vehicle may accelerate suddenly if
the accelerator pedal is accidentally depressed.

1795-1. Before driving
5
Driving
MIRAI_OM_USA_OM62073U
NOTICE
■Avoiding damage to vehicle parts
● Do not turn the steering wheel fully in either direction and ho ld it there for
an extended period of time.
Doing so may damage the power steering motor.
● When driving over bumps in the road, drive as slowly as possibl e to avoid
damaging the wheels, underside of the vehicle, etc.
■ If you get a flat tire while driving
A flat or damaged tire may cause the following situations. Hold the steering
wheel firmly and gradually depress the brake pedal to slow down the vehi-
cle.
● It may be difficult to control your vehicle.
● The vehicle will make abnormal sounds or vibrations.
● The vehicle will lean abnormally.
Information on what to do in case of a flat tire ( P. 432)
■ When encountering flooded roads
Do not drive on a road that has flooded after heavy rain, etc. Doing so may
cause the following serious damage to the vehicle:
● Fuel cell system stalling
● Short in electrical components
● Fuel cell system damage caused by water immersion
In the event that you drive on a flooded road and the vehicle i s flooded, be
sure to have your Toyota dealer check the following:
● Fuel cell system
● Brake function
● Changes in quantity and quality of transmission fluid, etc.
● Lubricant condition for the bearings and suspension joints (whe re possi-
ble), and the function of all joints, bearings, etc.
If the shift control system is damaged by flooding, it may not be possible to
shift the shift position to P, or from P to other positions. Wh en the shift posi-
tion cannot be changed from P to any other position, the front wheels will
lock, and you will be unable to tow the vehicle with the front wheels on the
ground, as the front wheels may be locked. In this case, transp ort the vehi-
cle with both front wheels or all four wheels lifted.
■ If the vehicle will not shift out of the P position
There is a possibility that the 12-volt battery is discharged. Check the
12-volt battery in this situation.

1865-2. Driving procedures
MIRAI_OM_USA_OM62073U
Power switch
Check that the parking brake is set.
Firmly depress the brake pedal.
will be displayed on the multi-information display.
If it is not displayed, the fuel cell system cannot be started.
When shift position N is selected, the fuel cell system cannot start. Select
the P position when starting the fuel cell system. (
P. 194)
Press the power switch shortly
and firmly.
When operating the power switch,
one short, firm press is enough.
It is not necessary to press and
hold the switch.
If the “READY” indicator turns on,
the fuel cell system will operate
normally.
Continue depressing the brake
pedal until the “READY” indicator
is illuminated.
The fuel cell system can be started
from any power switch mode.
Check that the “R EADY” indicator is illuminated.
The vehicle will not move when the “READY” indicator is off.
Performing the following opera tions when carrying the elec-
tronic key on your person starts the fuel cell system or changes
power switch modes.
Starting the fuel cell system
1
2
3
4

1875-2. Driving procedures
5
Driving
MIRAI_OM_USA_OM62073U
Stop the vehicle completely.
Set the parking brake. ( P. 2 0 0 )
Press the P position switch.
(  P. 194)
Check that the shift position indica-
tor shows P. ( P. 193)
Press the power switch.
The meter display will turn off, indicating the fuel cell syste m has stopped.
(The shift position indicator is displayed for several seconds)
The H
2O indicator will illuminate, indicating exhaust water is being purged.
Release the brake pedal and check that the meter display is off.
When the fuel cell system is sto pped, water is automatically purged
from the tailpipe. To minimize water accumulation at parking ga rages,
etc., purge can be done manually before parking.
While the “READY” indicator is
on, press the H
2O switch.
The H
2O indicator on the meter
turns on.
Press the switch again to stop the
purge.
Remember that water is being gen-
erated as long as the fuel cell sys-
tem is operating. So a small
amount of water will be generated
after manual purging and before
parking.
Stopping the fue l cell system
1
2
3
Water release (H2O switch)
4
5

1885-2. Driving procedures
MIRAI_OM_USA_OM62073U
Modes can be changed by pressing the power switch with brake pedal
released. (The mode changes each time the switch is pressed.)
Off
The emergency flashers can be
used.
ACCESSORY mode
Some electrical components such
as the audio system can be used.
“Accessory” will be displayed on
the main display.
ON mode
All electrical components can be
used.
“Ignition On” will be displayed on
the main display.
■ Auto power off function
If the vehicle is left in ACCESSORY mode for more than 20 minut es or ON
mode (the fuel cell system is not operating) for more than an h our with the
shift position in P, the power switch will automatically turn o ff. However, this
function cannot entirely prevent 12-volt battery discharge. Do not leave the
vehicle with the power switch in ACCESSORY or ON mode for long periods
of time when the fuel cell system is not operating.
■ Sounds and vibrations speci fic to a fuel cell vehicle
P. 88
■ Electronic key battery depletion
P. 130
Changing power switch modes

1895-2. Driving procedures
5
Driving
MIRAI_OM_USA_OM62073U■
Starting the fuel cell syst em in cold temperatures
● When the power switch is pressed and the fuel cell system start s (P. 186)
during cold temperatures, the fuel cell stack is quickly warmed up using the
waste heat during power generation.
● When the temperatures is cold, it may take some time until the “READY”
indicator turns on.
● When starting the fuel cell system during cold weather, “FC Sys tem Shut-
down due to Freezing conditions Stop Your Vehicle in a Safe Place and
Contact Your Dealer” may be displayed in the multi-information display.
The fuel cell system is frozen and can not be started. Contact a Toyota
dealer.
● The power output will be temporarily limited until the fuel cel l system
reaches full operating temperature.
● The fuel cell system noises may become louder when the temperat ure is
cold. This is the normal warm-up operation and is not a malfunc tion. In
some cases, operation noises may continue for a some time even after the
“READY” indicator has turned on. ( P. 88)
■ Stopping the fuel cell syst em in cold temperatures
● When the power switch is pressed and the fuel cell system is stopped
( P. 187) during cold temperatures, the time for water purge from the tail-
pipe may be longer than usual to prevent liquid in the fuel cel l stack from
freezing.
● The water purge time may also be long if the system is stopped before fuel
cell system warm-up is completed.
● It is normal to hear hissing and other sounds during purge. ( P. 88)
● The H
2O indicator on the meter will illuminate during purge.
●
In extremely cold temperatures, the
“READY” indicator may take more than
10 seconds to illuminate. In this case,
the status progression of the fuel cell
system startup is displayed on the multi-
information display.