2023 TOYOTA MIRAI transmission

7
Owners Manual_USA_M62064_en
by installing non-genuine Toyota
products.
The installation of a mobile two-
way radio system in your vehicle
could affect electronic systems
such as:
Fuel cell system
 Advanced Drive
 Toyota Safety Sense 2.5 +
with Teammate
 Toyota Safety Sense 2.5 +
 Anti-lock brake system
 Vehicle dynamics integrated
management
 SRS airbag system
 Seat belt pretensioner system
Be sure to check with your Toy-
ota dealer for precautionary
measures or special instructions
regarding installation of a mobile
two-way radio system.
High voltage parts and cables
on the fuel cell electric vehicles
emit approximately the same
amount of electromagnetic
waves as the conventional gas-
oline powered vehicles or home
electronic appliances despite of
their electromagnetic shielding.
Unwanted noise may occur in
the reception of the mobile two-
way radio. The vehicle is equipped with
sophisticated computers that will
record certain data, such as:
• Engine speed / Electric motor
speed (traction motor speed)
• Accelerator status
• Brake status
• Vehicle speed
• Operation status of the driving assist systems
• Images from the cameras
Your vehicle is equipped with cam-
eras. Contact your Toyota dealer for
the location of re cording cameras.
The recorded data varies
according to the vehicle grade
level and options with which it is
equipped.
These computers do not record
conversations or sounds, and
only record images outside of
the vehicle in certain situations.
Data Transmission
Your vehicle may transmit the data
recorded in these computers to
Toyota without notification to you.
Data usage
Toyota may use the data recorded
in this computer to diagnose mal-
functions, conduct research and
development, and improve quality.
Toyota will not disclose the
recorded data to a third party
except:
• With the consen t of the vehicle
owner or with the consent of the
lessee if the vehicle is leased
Installation of a mobile
two-way radio system
Vehicle data recording

1745-1. Before driving
Owners Manual_USA_M62064_en
WARNING
●The brake system consists of 2
or more individual hydraulic sys-
tems; if one of the systems fails,
the other(s) will still operate. In
this case, the brake pedal
should be depressed more
firmly than usual and the brak-
ing distance will increase. Have
your brakes fixed immediately.
NOTICE
■When driving the vehicle
●Do not depress t he accelerator
and brake pedals at the same
time during drivin g, as this may
restrain the fuel cell system out-
put.
●Do not use the accelerator
pedal or depress the accelera-
tor 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 vehi cle may acceler-
ate suddenly if the accelerator
pedal is accidentally depressed.
■Avoiding damage to vehicle
parts
●Do not turn the steering wheel
fully in either direction and hold
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 possible
to avoid damagi ng the wheels,
underside of the vehicle, etc.
■If you get a flat tire while driv-
ing
A flat or damaged tire may cause
the following situations. Hold the
steering wheel firmly and gradu-
ally depress the brake pedal to
slow down the vehicle.
●It may be difficult to control your
vehicle.
●The vehicle will make abnormal
sounds or vibrations.
●The vehicle will lean abnor-
mally.
Information on what to do in case
of a flat tire ( P.467)
■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 is
flooded, be sure to have your Toy-
ota dealer check the following:
●Fuel cell system
●Brake function
●Changes in quantity and quality
of transmission fluid, etc.
●Lubricant condition for the bear-
ings and suspension joints
(where possible), and the func-
tion of all joints, bearings, etc.

3205-5. Using the driving support systems
Owners Manual_USA_M62064_en
Multi-information display
Driving mode select switch
Driving mode changes if the switch
is pressed.
1 Normal mode
Provides an optimal balance of fuel
economy, quietness, and dynamic
performance. Suitable for normal
driving.
2Sport mode
Controls the transmission and fuel
cell system to provide quick, power-
ful acceleration. Making it suitable
for when agile dri ving response is
desired, such as when driving on
roads with many curves.
When the sport mod e is selected,
sport mode indicator comes on.
3 Eco drive mode
Helps the driver accelerate in an
eco friendly mann er and improve
fuel economy through moderate
throttle characteristics and by con-
trolling the operation of the air con-
ditioning system (heating/ cooling).
When the Eco drive mode is
selected, Eco drive mode indicator
comes on.
■Operation of the air condition-
ing system in Eco drive mode
Eco drive mode con trols the heat-
ing/ cooling operations and fan
speed of the air conditioning system
to enhance fuel efficiency. To
improve air conditioning perfor-
mance, perform the following opera-
tions:
●Turn off eco air conditioning mode
(  P.334, 341)
●Adjust the fan speed ( P.333,
341)
●Turn off Eco drive mode
■Automatic deactivation of sport
mode
If the power switch is turned off after
driving in sport mode, the drive
mode will be change d to normal
mode.
Driving mode select
switch
The driving modes can be
selected to suit driving con-
dition.
Selecting a drive mode

4027-2. Maintenance
Owners Manual_USA_M62064_en
Radiator/con-
denser
The radiator and
condenser should
be free from for-
eign objects.
( P.411)
Washer fluid
Is there sufficient
washer fluid?
( P.412)
Trun k
ItemsCheck points
12-volt batteryCheck the connec-
tions. ( P.413)
Vehicle interior
ItemsCheck points
Accelerator
pedal
• The accelerator
pedal should
move smoothly
(without uneven
pedal effort or
catching).
Transmission
“Park” mecha-
nism
• When parked on a slope and the
shift position is in
P, is the vehicle
securely
stopped?
ItemsCheck points
Brake pedal
• Does the brake pedal move
smoothly?
• Does the brake pedal have
appropriate
clearance from
the floor?
• Does the brake pedal have the
correct amount
of free play?
Brakes
• The vehicle should not pull to
one side when
the brakes are
applied.
• The brakes should work
effectively.
• The brake pedal should not feel
spongy.
• The brake pedal should not get
too close to the
floor when the
brakes are
applied.
Head
restraints
• Do the head restraints move
smoothly and
lock securely?
Indica-
tors/buzzers
• Do the indica-tors and buzzers
function prop-
erly?
Lights• Do all the lights come on?
ItemsCheck points

4508-2. Steps to take in an emergency
Owners Manual_USA_M62064_en
In the following situations, it is
not possible to be towed by
another vehicle using cables or
chains, as the rear wheels may
be locked due to the parking
lock. Contact your Toyota dealer
or commercial towing service. 
There is a malfunction in the
shift control system. ( P.464)
 There is a malfunction in the
immobilizer system. ( P.70)
 There is a malfunction in the
smart key system. ( P.482)
 The 12-volt battery is dis-
charged. ( P.485)
The following may indicate a
problem with your transmission.
Contact your Toyota dealer or
commercial towing service
before towing.
 The fuel cell system warning
message is shown on the
multi-information display and
the vehicle does not move.
 The vehicle makes an abnor-
mal sound.
From the front
Use a towing dolly under the
WARNING

5009-1. Specifications
Owners Manual_USA_M62064_en
*: The fluid capacity is a reference quantity.If replacement is necessary, contact your Toyota dealer.
*1: Minimum pedal clearance when depressed with a force of 112 lbf (500 N, 51 kgf) while the fuel cell system is operating.
When performing the brake pedal i nspection, also be sure to check that
Electrical system (12-volt battery)
Open voltage at 68°F (20°C):
12.0 V or higher
(Turn the power switch off and turn on the
high beam headlights for 30 seconds.)
Charging rates
Quick charge
Slow charge
15 A max.
5 A max.
Transmission
Fluid capacity*5.9 qt. (5.6 L , 4.9 Imp. qt.)
Fluid typeToyota Genuine ATF WS
NOTICE
■Transmission fluid type
Using transmission fluid other than the above type may cause ab normal
noise or vibration, or damage th e transmission of your vehicle.
Brakes
Pedal clearance*14.0 in. (102 mm) Min.
Pedal free play0.04  0.24 in. (1  6 mm)
Brake pad wear limit0.04 in. (1 mm)
Parking brake lin ing wear limit0.04 in. (1 mm)
Parking brake indicator*2
When pulling the parking brake switch for
1 to 2 seconds: comes on
When pushing the parking brake switch for
1 to 2 seconds: turns off
Fluid typeFMVSS No.116 DOT 3 or SAE J1703
FMVSS No.116 DOT 4 or SAE J1704

5069-1. Specifications
Owners Manual_USA_M62064_enWarning: The temperature grades
of a tire assume that it is properly
inflated and not overloaded.
Excessive speed, underinflation, or
excessive loading, either sepa-
rately or in combination, can cause
heat buildup and possible tire fail-
ure.
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation pressure
Tire pressure when the vehicle has been
parked for three hours or more, or has not
been driven more than
1 mile or 1.5 km
under that condition
Maximum inflation pressure
The maximum cold inf lated pressure to
which a tire may be inflated, shown on the
sidewall of the tire
Recommended inflation pres-
sureCold tire inflation pressure recommended
by a manufacturer
Accessory weight
The combined weight (in excess of those
standard items which may be replaced) of
transmission, power steering, power
brakes, power windows, power seats,
radio and heater, to the extent that these
items are available as factory-installed
equipment (whether installed or not)
Curb weight
The weight of a moto r vehicle with stan-
dard equipment, including the maximum
capacity of fuel, oil and coolant, and if so
equipped, air conditioning and additional
weight optional engine
Maximum loaded vehicle
weight
The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight
Normal occupant weight
150 lb. (68 kg) times the number of occu-
pants specified in the second column of
Ta b l e 1
* that follows

Owners Manual_USA_M62064_en
Alphabetical Index547
F
Flat tire .................................... 467Tire pressure warning system........................................... 418
Floor mats ................................. 26
Fluid Brake .................................... 500
Transmission ........................ 500
Washer ................................. 412
Footwell light .................... ...... 355
Front footwell lights ............... 355
Front passenger occupant clas- sification system .................... 46
Front seats .............................. 141 Adjustment ........................... 141
Cleaning ............................... 396
Correct driving posture ........... 27
Driving position memory....... 142
Head restraints ..................... 145
Memory recall function ......... 144
Power easy access system .. 142
Seat heaters ......................... 351
Seat position memory .......... 142
Seat ventilators .................... 351
Front side marker light Light switch .......................... 198
Replacing light bulbs ............ 443
Front turn signal lights .......... 190 Replacing light bulbs ............ 443
Turn signal lever ................... 190
Fuel .......................................... 210 Capacity ............................... 497
Fuel gauge ..................... 99, 102
Refueling .............................. 210
Type ..................................... 497
Warning light ........................ 460
Fuel Cell Electric Vehicle ......... 76 Charging the traction battery .. 78
Driving tips ............................. 91
Handling hydrogen gas .......... 86
Hydrogen gas ......................... 85 Hydrogen-related components81
Maintenance, repair, recycling,
and disposal .........................78
Power output restriction ..........84
Power switch ........................180
Regenerative braking .............78
Road accident cautions ..........88
Running out of fuel .................83
Service plugs ..........................87
Sounds and vibrations ............77
Starting the system ...............180
Traction battery air intake vents .............................................90
Fuel cell electric vehicle driving tips ...........................................91
Fuel cell stack .....................76, 81 Fuel cell stack cover .............409
Fuel cell stack coolant ...........410 Checking ..............................410
Preparing and checking before winter ..................................327
Fuel cell stack cover ..............409
Fuel cell system ........................76 Acoustic vehicle alerting system.............................................79
Emergency shut off system ....89
High voltage components .......81
If the fuel cell system will not start ....................................480
Overheating ..........................491
Power switch ........................180
Precautions ............................81
Predictive efficient drive..........79
Starting the fuel cell system .180
Water release .......................196
Fuel cell System Indicator ...103, 108, 118
Fuel cell unit Compartment........................408
Fuel cell unit compartment cover...........................................409