2023 TOYOTA MIRAI Owners Manual

892-1. Fuel cell electric vehicle
Owners Manual_USA_M62064_en
2
Fuel cell system
When a certain level of impact
from an accident is detected, the
fuel cell system is shut down
and the system shuts out the
high voltage.
Also, the fuel supply is stopped
from the hydrogen tank valves.
If the emergency shut off system
activates, your vehicle will not
restart. To restart the fuel cell
system, contact your Toyota
dealer.
A message is automatically dis-
played when a malfunction
occurs in the fuel cell system or
an improper operation is
attempted. ( P.464)
If a warning message is shown
on the multi-information display,
read the message and follow the
instructions.
WARNING

902-1. Fuel cell electric vehicle
Owners Manual_USA_M62064_en
■If a warning light comes on, a
warning message is displayed,
or the 12-volt battery connec-
tion is disconnected
The fuel cell system may not be
able to restart.
If the “READY” indicator does not
come on, even when the start pro-
cedure is repeated, contact your
Toyota dealer.
There are air intake vents on
each side of the rear seatback
with the purpose of cooling the
traction battery. If the vents are
blocked, it may interfere with the
cooling of the traction battery.
If input/output of the traction battery
becomes limited and the distance
that the vehicle can be driven using
the traction motor is reduced, the
fuel economy may be reduced.
Traction battery air intake
vents
NOTICE
■Traction battery air intake
vents
●Make sure not to block the air
intake vents with anything, such
as cover, or luggage. The
input/output of t he traction bat-
tery may be restricted, leading
to a reduction in traction battery
output and a malfunction.
●Periodically clean the air intake
vents to prevent them from clog-
ging. ( P.433)
●Do not get water or foreign
materials in the air intake vents
as this may cause a short circuit
and damage the traction bat-
tery.

912-1. Fuel cell electric vehicle
Owners Manual_USA_M62064_en
2
Fuel cell systemMaintaining the Fuel cell System
Indicator to Eco area on the
multi-information display can
extend your driving range.
( P.103, 108)
Drive your vehicle smoothly.
Avoid abrupt acceleration and
deceleration.
Mild acceleration and decelera-
tion can help curb wasteful fuel
consumption.
If the brakes are operated gently
and in a timely manner, a
greater amount of electrical
energy can be regenerated
when slowing down.
Repeated acceleration and
deceleration, as well as long
waits at traffic lights, will lead to decreased fuel economy. Check
traffic reports before leaving and
avoid delays as much as possi-
ble. When driving in a con-
gested traffic situations, gently
release the brake pedal to allow
the vehicle to move forward
slightly while avoiding overuse
of the accelerator pedal. Doing
so can help control excessive
fuel consumption.
Similar to an electric vehicle, a
fuel cell electric vehicle uses the
most fuel in high output driving
such as driving on a steep uphill
or at high speeds. Moderate the
vehicle speed and maintain a
steady speed.
When using Eco drive mode, the
torque corresponding to the
accelerator pedal depression
amount can be generated more
smoothly than it is in normal
conditions. In addition, the oper-
ation of the air conditioning sys-
tem (heating/cooling) will be
minimized, improving the fuel
economy. (
P.320)
 Use the air conditioning only
when necessary. Doing so
Fuel cell electric vehi-
cle driving tips
To maximize fuel economy
and range, pay attention to
the following:
Use of Fuel cell System
Indicator
Accelerator pedal/brake
pedal operation
When braking
Delays
Driving with high power
output
Using Eco drive mode
Air conditioning

922-1. Fuel cell electric vehicle
Owners Manual_USA_M62064_en
can help reduce excessive
fuel consumption.
In summer: When the ambient
temperature is high, use the
recirculated air mode. Doing
so will help to reduce the bur-
den on the air conditioning
system and reduce fuel con-
sumption as well.
In winter: Avoid excess heat-
ing. Use the seat heater (if
equipped) or steering heater
(if equipped) to minimize the
need for cabin heating
(P.351).
 Using eco air conditioning
mode, this helps curb fuel
consumption even with the air
conditioning system turned
on. ( P.334, 341)
Make sure to check the tire infla-
tion pressure frequently.
Improper tire inflation pressure
can cause poor fuel economy.
Also, as snow tires can cause
large amounts of friction, their
use on dry roads can lead to
poor fuel economy. Use tires
that are appropriate for the sea-
son.
Carrying heavy luggage will lead
to reduced fuel economy. Install-
ing a large roof rack will also reduce fuel economy.
Checking tire inflation
pressure
Luggage

93
Owners Manual_USA_M62064_en
3
3
Vehicle status information and indicators
Vehicle status informa-tion and indicators
3-1. Instrument cluster
Warning lights and indica-tors ............................... 94
Gauges and meters (with 8- inch multi-information dis-
play) ............................. 99
Gauges and meters (With 12.3-inch multi-information
display) ...................... 102
Multi-information display .................................. 105
Head-up display .......... 114
Energy monitor/consump- tion screen/air purification
screen ....................... 119

943-1. Instrument cluster
Owners Manual_USA_M62064_en
3-1.Instrument cluster
For the purpose of explanation, the following illustrations display all
warning lights and indicators illuminated.
■With 8-inch multi-information display
The units used on the meters and some indicators may differ dep ending on
the target region.
■With 12.3-inch multi-information display
War ning lights and indicators
The warning lights and indicators on the instrument cluster,
center panel and outside rear view mirrors inform the driver
of the status of the vehicle’s various systems.
Instrument cluster

953-1. Instrument cluster
Owners Manual_USA_M62064_en
3
Vehicle status information and indicators
The units used on the meters and some indicators may differ dep ending on
the target region.
Warning lights inform the driver
of malfunctions in the indicated
vehicle’s systems.
Warning lights
Hydrogen leak warn-
ing light
*1 (  P.454)
(U.S.A.)
Brake system warn-
ing light
*1 ( P.454)
(Canada)
(Red)
Brake system warn-
ing light
*1 ( P.454)
(Yellow)
Brake system warn-
ing light
*1 ( P.454)
(Red)
High coolant tempera-
ture warning light
( P.455)
Fuel cell system over-
heat warning light
*2
(  P.455)
Charging system
warning light
*2
(  P.455)
SRS warning light
*1
(  P.455)
Pop Up Hood warning
light
*1 (  P.455)
(U.S.A.)
ABS warning light*1
(  P.456)
(Canada)
ABS warning light*1
(  P.456)
(Red)
Electric power steer-
ing system warning
light
*1 ( P.456)
(Yellow)
Electric power steer-
ing system warning
light
*1 ( P.456)
(Flashes or
illuminates)
PCS warning light*1
(  P.456)
(Orange)
LTA i n d i c a t o r
( P.457)
Intuitive parking assist
OFF indicator
*3 (if
equipped) ( P.457)
PKSB OFF indica-
tor
*1 (if equipped)
(  P.457)
(Flashes)
RCTA OFF indicator*1
(if equipped) ( P.458)
(Flashes or
illuminates)
RCD OFF indicator (if
equipped) ( P.458)
Slip indicator light
*1
(  P.458)
Inappropriate pedal
operation warning
light
*2 (  P.459)
(Flashes)
Brake hold operated
indicator
*1 ( P.459)
(U.S.A.)
(Flashes)
Parking brake indica-
tor ( P.459)

963-1. Instrument cluster
Owners Manual_USA_M62064_en
*1: These lights turn on when the power switch is turned to ON to
indicate 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 malfunction in a sys-
tem if the light does not come on,
or turn off. Have the vehicle
inspected by your Toyota dealer.
*2: This light illuminates on the multi-informatio n display with a
message.
*3: Intuitive parking assist OFF indi- cator turns on when the power
switch is turned to ON while the
Intuitive parking assist function is
on. It will turn off after a few sec-
onds.
*4: Refer to “Toyota Teammate Advanced Drive OWNER’S
MANUAL” at Toyota.com.
(Canada)
(Flashes)
Parking brake indica-
tor ( P.459)
Tire pressure warning
light
*1 (  P.460)
Low fuel level warn-
ing light ( P.460)
Driver’s and front pas-
senger’s seat belt
reminder light
(  P.460)
Rear passengers’ seat
belt reminder lights
(  P.461)
Advanced Drive warn-
ing light (if
equipped)
*1, 4
WARNING
■If a safety system warning
light does not come on
Should a safety system light such
as the ABS and SRS warning light
not come on when you start the
fuel cell system, this could mean
that these system s are not avail-
able to help protect you in an acci-
dent, which could result in death
or serious injury. Have the vehicle
inspected by you r Toyota dealer
immediately if this occurs.
NOTICE
■To prevent damage to the fuel
cell system and its compo-
nents
This vehicle is equipped with high
coolant temperature warning light
(  P.490), instead of, coolant tem-
perature gauge.
The fuel cell sys tem may be over-
heating if the high coolant tem-
perature warning light flashes or
comes on. In this case, immedi-
ately stop the vehicle in a safe
place, and check the fuel cell sys-
tem after it has cooled completely.