TOYOTA MIRAI 2018 Owners Manual (in English)

1715-1. Before driving
5
Driving
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Dinghy towing
Your vehicle is not designed to be dinghy towed (with 4 wheels
on the ground) behind a motor home.
NOTICE
■To avoid serious damage to your vehicle
Do not tow your vehicle with four wheels on the ground.

1725-2. Driving procedures
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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. 180)
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

1735-2. Driving procedures
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Driving
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Stop the vehicle completely.
Set the parking brake. ( P. 1 8 6 )
Press the P position switch.
(  P. 180)
Check that the shift position indica-
tor shows P. ( P. 179)
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
Water release (H2O switch)

1745-2. Driving procedures
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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. 80
■ Electronic key battery depletion
P. 118
Changing power switch modes

1755-2. Driving procedures
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Driving
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Starting the fuel cell syst em in cold temperatures
● When the power switch is pressed and the fuel cell system start s (P. 172)
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. 80)
■ Stopping the fuel cell syst em in cold temperatures
● When the power switch is pressed and the fuel cell system is stopped
( P. 173) 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. 80)
● 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.

1765-2. Driving procedures
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Parking the vehicle during cold weather
●Water may automatically purge from the tailpipe, even when the fuel cell
system is off, in order to prevent liquid in the fuel cell stac k, hydrogen pipe-
lines, etc., from freezing.
● It is normal to hear hissing and other sounds during purge. ( P. 80)
● The H
2O indicator on the meter will illuminate during purge.
■ Water release function during cold weather
In the following cases, the fuel cell system automatic drainage may not oper-
ate. It may not be possible to start the fuel cell system due t o the fuel cell
stack, hydrogen pipes, etc, being frozen.
• When transporting or towing the vehicle in frozen areas
• When the 12-volt battery terminals are disconnected and remain as such
in frozen areas
Operate the water release function with the following procedure beforehand
to prevent water from freezing in the system.
Turn the power switch to ON mode and press the H
2O switch.
Check that the H
2O indicator on the meter turns on.
While depressing the brake, press the power switch to start the fuel cell
system.
Check that the “READY” indicator turns on.
Press the power switch to stop the fuel cell system.
The water release is automatically performed. During water purg e, the
H
2O indicator turns on. (Longer than normal water purge)
■ Conditions affecting operation
P. 134
■ Notes for the entry function
P. 135
■ If the fuel cell system does not start
●The immobilizer system may not have been deactivated. ( P. 72)
Contact your Toyota dealer.
● Check that the shift position is P. ( P. 179)
The fuel cell system cannot be started when the shift position is N.
If P position is not selected, “Shift to P position to start” w ill be displayed on
the multi-information display.
● Check that the fuel door is closed.
When the fuel door is open, the fuel cell system cannot be star ted.
Close the fuel door before starting the system. ( P. 201)

1775-2. Driving procedures
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Driving
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If “Smart Entry & Start System m alfunction See owner’s manual” is dis-
played on the multi-information display
The system may be malfunctioning. Have the vehicle inspected by your
Toyota dealer immediately.
■ If the “READY” indicator does not come on
In the event that the “READY” indicator does not come on even a fter perform-
ing the proper procedures for starting the vehicle, contact you r Toyota dealer
immediately.
■ If the fuel cell system is malfunctioning
P. 376
■ If the electronic key battery is depleted
P. 353
■ Operation of the power switch
If the switch is not pressed shortly and firmly, the power swit ch mode may not
change or the fuel cell system may not start.
■ Automatic P position selection function
●When the shift position is other than P, pressing the power swi tch with the
vehicle stopped completely will cause the shift position to cha nge to P auto-
matically, and then the power switch will turn off.
● When turning the power switch off with the shift position other than P, firmly
depress the brake pedal and confirm that the shift position* ha s changed to
P before slowly releasing the brake pedal.
*: Even after the instrument panel display has been turned off, t he shift
position indicator will continue to be displayed for several se conds.
■ If the shift control system malfunctions
The power switch will not be able to be turned off. In this occurs, the switch
can be turned off by applying the parking brake.
If the system malfunctions, have your vehicle serviced by your Toyota dealer
immediately.
■ If the smart key system has been d eactivated in a customized setting
P. 436

1785-2. Driving procedures
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WARNING
■When starting the fuel cell system
Always start the fuel cell system while sitting in the driver’s seat. Do not
depress the accelerator pedal while starting the fuel cell syst em under any
circumstances.
Doing so may cause an accident resulting in death or serious in jury.
■ Stopping the fuel cell system in an emergency
If you want to stop the fuel cell system in an emergency while driving the
vehicle, press and hold the power switch for more than 2 second s, or press
it briefly 3 times or more in succession. ( P. 361)
However, do not touch the power switch while driving except in an emer-
gency. Turning the fuel cell system off while driving will not cause loss of
steering or braking control, however, power assist to the steer ing will be
lost. This will make it more difficult to steer smoothly, so yo u should pull over
and stop the vehicle as soon as it is safe to do so.
NOTICE
■ To prevent 12-volt b attery discharge
Do not leave the power switch in ACCESSORY or ON mode for long peri-
ods if the fuel cell system is off.
■ When starting the fuel cell system
If the fuel cell system becomes difficult to start, have your vehicle checked
by your Toyota dealer immediately.
■ Symptoms indicating a malfunction with the power switch
If the power switch seems to be operating somewhat differently than usual,
such as the switch sticking slightly, there may be a malfunctio n. Contact
your Toyota dealer immediately.

1795-2. Driving procedures
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Driving
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Transmission
Shift lever
Operate the shift lever gently
and ensure correct shifting
operation.
Release the shift lever after
each shifting operation to allow
it return to the position.When shifting to the D
or R positions, move
the shift lever along the
shift gate.
To shift to the N posi-
tion, slide the shift lever
to the left and hold it.
The shift position will
change to N.
To shift to the Br mode, pull the shift lever to the rear along
the shift gate. Shifting to Br mode is only possible when the
shift position D is selected.
When shifting from P to N, D or R, from D to R, or from R to D,
ensure that the brake pedal is being depressed and that the veh icle
is stationary.
Shift position indicator
When selecting a shift position, make sure that the shift posit ion
has been changed to the desired po sition by checking the shift
position indicator provided on the instrument panel.
Shifting the shift lever

1805-2. Driving procedures
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The shift position can be changed to P through the use of the P posi-
tion switch.
Fully stop the vehicle and keep
depressing the brake pedal, and
then press the P position switch.
When the shift position is changed
to P, the switch indicator comes on.
Check that the P position indicator
is illuminated on the shift position
indicator.
■
Shifting the shift position from P to other positions
While depressing the brake pedal firmly, operate the shift leve r. I f
the shift lever is operated without depressing the brake pedal, a
buzzer will sound and the shifting operation will be disabled.
Shift position purpose
Shift positionObjective or function
PParking the vehicle/starting the fuel cell system
RReversing
NNeutral
DNormal driving
P position switch