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982. Fuel cell vehicle
MIRAI_OM_USA_OM62073U■
Basic concepts of hydrogen safety
●Prevent leakage
The pipe joints of the hydrogen pipelines are designed to preve nt leaks.
The joints are checked for gas leakage at every official vehicle inspection.
● Detect to stop leakage
• The vehicle is equipped with hydrogen detectors. If the hydrog en detec-
tors detect a leak, the hydrogen tank valves automatically clos e to pre-
vent more hydrogen from escaping.
• The vehicle is equipped with a collision sensor. If the collis ion sensor
detects a collision, the hydrogen tank valves automatically clo se to pre-
vent hydrogen gas from leaking from any damaged components.
● Disperse the leaked hydrogen gas
The hydrogen tanks and pipelines are located outside of the passenger
compartment, so any leaked gas will disperse into the atmospher e by
design.
● Eliminate sources of fire
No source of fire is located near the hydrogen pipelines by des ign.
WARNING
■Hydrogen-related components
● Never alter, customize, or disassemble any hydrogen-related par ts.
● The hydrogen tanks, fuel cell stack, hydrogen pipelines, and co nnecting
components are filled with hydrogen gas. Do not remove or disassemble
these parts. Doing so can cause a hydrogen gas leak, resulting in fire or
explosion of the vehicle, which may result in death or serious injury.
■ When hydrogen gas leak or other malfunction is detected
● If a large amount of hydrogen gas leaking is noticed, turn off the power
switch, exit the vehicle, and stay far away from it. Display wa rning signs
and keep sources of fire away from the vehicle. If possible, get assistance.
When the above is done, immediately contact your Toyota dealer.
● If you notice gas leaking or any other malfunction, immediately stop the
vehicle in a safe and well-ventilated place, exit the vehicle, and stay far
away from it.
● If a warning message is shown on the multi-information display, immedi-
ately stop the vehicle in a safe, well-ventilated place.
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1002. Fuel cell vehicle
MIRAI_OM_USA_OM62073U
WARNING
■Precautions in case of an accident
In the event of an accident, observe the following precautions. Failure to do
so can cause fire or electric shocks, resulting in death or ser ious injury.
● Stop the vehicle in a safe place to prevent subsequent accident s. Shift the
shift position to P and apply the parking brake.
● Check for hydrogen gas leakage.
Hydrogen leaks will cause a warning message to be shown on the multi-
information display. Larger leaks may also be audible.
● If a large amount of hydrogen gas leaking is noticed, turn off the power
switch, exit the vehicle, and stay far away from it. Display wa rning signs
and keep sources of fire away from the vehicle. If possible, get assistance.
When the above is done, immediately contact your Toyota dealer.
● Do not touch the high-voltage parts, cables (orange), or connec tors.
● If electric wires are exposed inside or outside your vehicle, an electric
shock may occur. Never touch exposed electric wires.
● If a fluid leak occurs, do not touch the fluid as it may be the strong alkaline
electrolyte from the traction battery. If it comes into contact with your skin
or eyes, wash it off immediately with a large amount of water, and seek
immediate medical attention.
● In case of a vehicle fire, the hydrogen gas in the hydrogen tan ks is
released via the hydrogen tank valves toward the rear of the ve hicle
angled downward, in order to reduce the damage to the hydrogen tanks.
Keep away from the vehicle.
● If a vehicle fire occurs, it can be extinguished with a Class A , B, or C fire
extinguisher. If using water, apply a large amount from a hydrant.
● If your vehicle needs to be towed, do so with the front wheels lifted. If the
wheels are touching the ground, the electric motor (traction mo tor) may
continue to generate electricity. This may cause a fire.
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1022. Fuel cell vehicle
MIRAI_OM_USA_OM62073U
Advice for driving fuel cell vehicles
◆Fuel cell system indicator usage
Maintaining the fuel cell system indicator to Eco area on the
multi-information display can extend your driving range. (P. 120)
◆Accelerator pedal/brake pedal operation
Drive the vehicle smoothly. Avo id abrupt acceleration and decel era-
tion.
Mild acceleration and decelerati on can help curb wasteful fuel con-
sumption.
◆When braking
Make sure to depress the brake gently and allow for a long stop ping
distance. This enables collectio n of more electrical energy gen er-
ated during deceleration.
◆Heavy traffic
Repeated acceleration and deceleration as well as long stops at
traffic lights, will decrease fuel economy. Check traffic reports
ahead of time and avoid traffic jams as much as possible. If ca ught
in a traffic jam, gently release the brake pedal to allow the v ehicle to
move forward slowly while avoiding overuse of the accelerator
pedal to help curb wasteful fuel consumption.
◆Driving with high power output
Similar to an electric vehicle, a fuel cell vehicle uses the mo st fuel in
high output driving such as driving on a steep uphill or at hig h
speeds. Moderate the vehicle speed and maintain a steady speed.
To maximize fuel economy and ra nge, pay attention to the fol-
lowing:
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1032. Fuel cell vehicle
2
Fuel cell system
MIRAI_OM_USA_OM62073U
◆Using Eco drive mode
Using Eco drive mode (P. 195) makes torque generation less
aggressive than normal when stepping on the accelerator pedal,
leading to improvement in fuel economy.
Also, is displayed on the air conditioning screen, indicating
the switch to ECO HEAT/COOL mode ( P. 3 0 8 ) .
◆Air conditioning system on/off
● Turn off the air conditioning system operation switch except
when necessary to help curb fuel consumption.
In summer: When the ambient temperature is high, use the recircu -
lated air mode. This decreases the load on the air con-
ditioning system.
In winter: Avoid excess heating. Use the seat heater to minimize the need for cabin heating ( P. 316).
● By pushing , ECO HEAT/COOL mode is turned on. This
helps curb fuel consumption even with the air conditioning syst em
turned on.
◆Checking tire inflation pressure
Make sure to check the tire inflation pressure frequently. Impr oper
tire inflation pressure can cause poor fuel economy.
Additionally, snow tires have mo re rolling friction and their use on
dry roads lead to poor fuel economy. Use tires that are appropr iate
for the season.
◆Luggage
Avoid carrying unnecessary luggage and unload excess weight in
order avoid poor fuel economy. Installing a large roof rack wil l also
reduce fuel economy.
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105
Instrument cluster3
MIRAI_OM_USA_OM62073U3. Instrument cluster
Warning lights and indicators ........................ 106
Gauges and meters .......... 111
Multi-information display ... 117
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1083. Instrument cluster
MIRAI_OM_USA_OM62073U
*1: These lights turn on when the power switch is turned to ON mode to indi-
cate that a system check is being performed. They will turn off after the fuel
cell system is on, or after a few seconds. There may be a malfu nction in a
system if a light does not come on, or turn off. Have the vehic le inspected
by your Toyota dealer.
*2: The light comes on to indicate a malfunction.
*3: This light illuminates on the multi-information display.
*4: This light illuminates on the main display.
Driver’s and front
passenger’s seat belt
reminder light ( P. 421)
*3Brake Override System/
Drive-Start Control/Park-
ing Support Brake func-
tion (for static objects) (if
equipped) ( P. 421)
*1
Master warning light
(P. 421)
*4
(Blue)
Power restriction
indicator ( P. 111 )
*1
Tire pressure warning
light ( P. 421)
*4
(Yellow)
Power restriction
indicator ( P. 111, 428)
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1103. Instrument cluster
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*1: Depending on the operating condition, the color and illuminating state of
the light change.
*2: The light turns on when the system is off.
*3: These lights turn on when the power switch is turned to ON mod e to indi-
cate that a system check is being performed. They will turn off after the fuel
cell system is on, or after a few seconds. There may be a malfu nction in a
system if a light does not come on, or turn off. Have the vehic le inspected
by your Toyota dealer.
*4: The light flashes to indicate that the system is operating.
*5: In order to confirm operation, the BSM outside rear view mirro r indicators
illuminate in the following situations:
• When the power switch is turned to ON mode while the BSM setti ngs are
set to ON.
• When the BSM settings are set to ON while the power switch is in ON
mode.
If the system is functioning correctly, the BSM outside rear vi ew mirror indi-
cators will turn off after a few seconds.
If the BSM outside rear view mirror indicators do not illuminat e or do not
turn off, there may be a malfunction in the system.
If this occurs, have the vehicle inspected by your Toyota deale r.
*6: This light illuminates on the outside rear view mirrors.
*7: This light illuminates on the main display.Br mode indicator
(
P. 195)
*3
(U.S.A.)
“AIR BAG ON/OFF”
indicator ( P. 49)
H
2O indicator
( P. 187)*3
(Canada)
“AIR BAG ON/OFF”
indicator ( P. 49)
WARNING
■If a safety system warning light does not come on
Should a safety system light such as the ABS and SRS warning lights not
come on when you start the fuel cell system, this could mean that these
systems are not available to help protect you in an accident, which could
result in death or serious injury. Have the vehicle inspected by your Toyota
dealer immediately if this occurs.
Page 111 of 528
1113. Instrument cluster
3
Instrument cluster
MIRAI_OM_USA_OM62073U
Gauges and meters
Main display
Displays the speedometer, fuel gauge, etc. (P. 111 )
Multi-information display
Presents the driver with a variety of vehicle data.
Displays warning messages in case of a malfunction. ( P. 426)
Shift position indicator
Displays the selected shift position. (P. 193)
Clock
P. 328
Fuel gauge
Displays the quantity of fuel
remaining in the hydrogen
tanks.
ECO MODE indicator and POWER MODE indicator
Displays the select ed driving mode.
(P. 195)
Main display