2017 TOYOTA MIRAI fuel system

1775-2. Driving procedures
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Driving
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If the electronic key battery is depleted
→P. 353
■ Operation of the power switch
When operating the power switch, one short, firm press is enough. If the
switch is pressed improperly, the fuel cell system may not start or the power
switch mode may not change. It is not necessary to press and hold the
switch.
■ Automatic P position selection function
●When the shift position is other than P, pressing the power switch with the
vehicle stopped completely will cause the shift position to change 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* has changed to
P before slowly releasing the brake pedal.
*: Even after the instrument panel display has been turned off, the shift
position indicator will continue to be displayed for several seconds.
■ 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
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 system under any
circumstances.
Doing so may cause an accident resulting in death or serious injury.
■ 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 seconds, 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 steering will be
lost. This will make it more difficult to steer smoothly, so you should pull over
and stop the vehicle as soon as it is safe to do so.

1785-2. Driving procedures
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NOTICE
■To prevent 12-volt battery 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 malf unction 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 malfunction. Contact
your Toyota dealer immediately.

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 lever. If
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

1815-2. Driving procedures
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Driving
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The following modes can be selected to suit driving conditions.
■Eco drive mode/Power modeEco drive mode
Suitable for improving the
fuel economy, because the
torque corresponding to the
accelerator pedal depres-
sion amount can be gener-
ated more smoothly than it is
in normal conditions.
is displayed on the air conditioning screen and the system
goes into ECO HEAT/COOL mode. ( →P. 260)
When the ECO MODE switch is pr essed, the ECO MODE indica-
tor will illuminate on the main display.
To cancel Eco drive mode, press the ECO MODE switch again.
At this time, the ECO HE AT/COOL mode is canceled.
Power mode
Use when high levels of response and feeling are desirable, such
as when driving in mountainous regions or when overtaking.
When the POWER MODE switch is pressed, the POWER MODE
indicator will illuminate on the main display.
To cancel power mode, press the POWER MODE switch again.
■Br mode
Suitable for driving that requires
strong regenerative braking,
such as down-hill driving, etc.
To select Br mode, shift the shift
lever down. ( →P. 179)
The Br mode indicator will illumi-
nate on the meter.
To return to normal driving mode, depress the accelerator pedal or
select the D position again with the shift lever.
Selecting a drive mode

1825-2. Driving procedures
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■For the shift positions
●When the power switch is off, the shift position cannot be changed.
● When the power switch is in ON mode (the fuel cell system is not operating),
the shift position can only be changed to N. The shift position will be
changed to N even if the shift position is shifted to D or R and held in that
position.
● When the “READY” indicator is on, the shift position can be changed from P
to D, N or R.
● When the “READY” indicator is flashing, the shift position cannot be
changed from P to another position even if the shift lever is operated.
Wait until the “READY” indicator changes from a flashing to a solid light, and
then operate the shift lever again.
In addition, if an attempt is made to change the shift position by moving the
shift lever or by pressing the P position switch in any of the following situa-
tions, a buzzer will sound and the shifting operation will be disabled or the
shift position will automatically change to N. When this happens, select an
appropriate shift position.
● When attempting to change the shift position from P without depressing the
brake pedal, the shift position change is invalidated.
● Situations where the shift position will automatically change to N:
• When the P position switch is pressed while the vehicle is running.
*1
• When an attempt is made to select the R position by moving the shift
lever when the vehicle is moving forward.
*2
• When an attempt is made to select the D position by moving the shiftlever when the vehicle is moving in reverse.
*3
• When an attempt is made to change the shift position from R to Br modeby moving the shift lever.
*1: Shift position may be changed to P when driving at extremely low speeds.
*2: Shift position may be changed to R when driving at low speeds.
*3: Shift position may be changed to D when driving at low speeds.
■ Br mode
Depending on the condition of the traction battery, Br mode may not be avail-
able.
In that case, a message is displayed on the multi-information display.
■ Sounds when in Br mode
→P. 8 0
■ Restraining sudden star t (Drive-Start Control)
→P. 159
■ Reverse warning buzzer
When shifting into R, a buzzer will sound to inform the driver that the shift
position is in R.

1885-3. Operating the lights and wipers
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With the headlights on, push
the lever away from you to turn
on the high beams.
Pull the lever toward you to the
center position to turn the high
beams off.
Pull the lever toward you and
release it to flash the high
beams once.
You can flash the high beams with the headlights on or off.
■Daytime running light system
●To make your vehicle more visible to other drivers during daytime driving,
the daytime running lights turn on automatically whenever the fuel cell sys-
tem is started. (Illuminate brighter than the parking lights.) Daytime running
lights are not designed for use at night.
Daytime running lights can be turned off by operating the switch.
● Compared to turning on the headlights, the daytime running light system
offers greater durability and consumes less electricity, so it can help improve
fuel economy.
■ Headlight control sensor
Turning on the high beam headlights
The sensor may not function properly if an
object is placed on the sensor, or anything
that blocks the sensor is affixed to the
windshield.
Doing so interferes with the sensor
detecting the level of ambient light and
may cause the automatic headlight sys-
tem to malfunction.

1895-3. Operating the lights and wipers
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Driving
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Automatic light off system
●When the headlights are on: The headlights and tail lights turn off 30 sec-
onds after a door is opened and closed if the power switch is turned to
ACCESSORY mode or turned off. (The lights turn off immediately if
on the key is pressed after all the doors are locked.)
● When only the tail lights are on: The tail lights turn off automatically if the
power switch is turned to ACCESSORY mode or turned off and the driver’s
door is opened.
To turn the lights on again, turn the power switch to ON mode, or turn the\
light
switch off once and then back to or .
If any of the doors or trunk lid is kept open, the lights automatically turn off
after 20 minutes.
■ Automatic headlight leveling system
The level of the headlights is automatically adjusted according to the number
of passengers and the loading condition of the vehicle to ensure that the
headlights do not interfere with other road users.
■ Light reminder buzzer
A buzzer sounds when the power switch is turned off or turned to ACCES-
SORY mode and the driver's door is opened while the lights are turned on.
■ 12-volt battery-saving function
In order to prevent the 12-volt battery of the vehicle from discharging, if the
headlights and/or tail lights are on when the power switch is turned off the
12-volt battery saving function will operate and automatically turn off all the
lights after approximately 20 minutes. When the power switch is turned to ON
mode, the 12-volt battery-saving function will be disabled.
When any of the following are performed, the 12-volt battery-saving function
is canceled once and then reactivated. All the lights will turn off automatically
20 minutes after the 12-volt battery-saving function has been reactivated:
●When the headlight switch is operated
● When a door is opened or closed
■ Customization
Settings (e.g. light sensor sensitivity) can be changed.
(Customizable features: →P. 438)
NOTICE
■ To prevent 12-volt battery discharge
Do not leave the lights on longer than necessary when the fuel cell system
is off.

1975-3. Operating the lights and wipers
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Driving
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NOTICE
■When the windshield is dry
Do not use the wipers, as they may damage the windshield.
■ When the washer fluid tank is empty
Do not operate the switch continually as the washer fluid pump may over-
heat.
■ When a nozzle becomes blocked
In this case, contact your Toyota dealer.
Do not try to clear it with a pin or other object. The nozzle will be damaged.
■ To prevent 12-volt battery discharge
Do not leave the wipers on longer than necessary when the fuel cell system
is off.