2023 TOYOTA MIRAI stop start

5TABLE OF CONTENTS
Owners Manual_USA_M62064_en
1
2
3
4
5
6
8 7
9
10
8-1. Essential information Emergency flashers ...... 446
If your vehicle has to be stopped in an emergency.................................... 446
If the vehicle is submerged or water on the road is rising.................................... 447
8-2. Steps to take in an emer- gency
If your vehicle needs to be towed........................... 449
If you think something is wrong .......................... 453
If a warning light turns on or a warning buzzer sounds 454
If a warning message is dis- played.......................... 464
If you have a flat tire...... 467
If the fuel cell system will not
start ............................. 480
If you lose your keys ..... 481
If the fuel door cannot be opened ........................ 482
If the electronic key does not operate properly .......... 482
If the 12-volt battery is dis- charged ....................... 485
If your vehicle overheats 490
If the vehicle becomes stuck .................................... 4949-1. Specifications
Maintenance data (fuel, fluid level, etc.) .................... 496
Tire information ............. 502
9-2. Customization Customizable features... 512
9-3. Initialization Items to initialize ............ 526
10-1.For owners Reporting safet y defects for
U.S. owners ................. 528
Reporting safet y defects for
Canadian owners ........ 528
Seat belt instructions for Canadian owners (in
French) ........................ 529
SRS airbag instructions for Canadian owners (in
French) ........................ 530
Headlight aim instructions for Canadian owners (in
French) ........................ 537
What to do if... (Troubleshoot- ing) .............................. 540
Alphabetical Index ......... 543
8When trouble arises9Vehicle specifications
10For owners
Index

18Pictorial index
Owners Manual_USA_M62064_en
Warning messages ............................................... ............... P.464
Emergency flasher switch ....................................... .......... P.446
Audio system
*1
Air conditioning system*2................................................. P.340
Usage................................................................................... P.340
Air conditioning system ............................. ............... P.333, 340
Usage.......................................................... ................. P.333, 340
Rear window defogger ........................................... ...... P.335, 342
Trunk opener main switch ................................................. P.135
Shift lever.................................................... ........................ P.185
Changing the shift position.................................... ............... P.185
Precautions for towing .. ....................................... ................ P.449
Power switch ................................................... ................... P.180
Starting the fuel cell system/c hanging the modes ................P.180
Emergency stop of the fuel cell system ............................... P.446
When the fuel cell system will not start ....................... ......... P.480
Warning messages ............................................... ............... P.464
Tilt and telescopic st eering control switch
*2/tilt and telescopic
steering lock release lever
*2............................................. P.147
Adjustment ..................................................... ...................... P.147
Driving position memory
*2.................................................... P.142
Hood lock release lever ........................................ ............. P.406
*1: Refer to “MULTIMEDIA OWNER’S MANUAL”.
*2: If equipped

261-1. For safe use
Owners Manual_USA_M62064_en
1-1.For safe use
Use only floor mats designed
specifically for vehicles of the
same model and model year as
your vehicle. Fix them securely
in place onto the carpet.
1Insert the retaining hooks
(clips) into the floor mat eye-
lets.
2 Turn the upper knob of each
retaining hook (clip) to secure
the floor mats in place.
Always align the marks . The shape of the retaining hooks
(clips) may differ from that shown in
the illustration.
Before driving
Observe the following
before starting off in the
vehicle to ensure safety of
driving.
Installing floor mats
WARNING
Observe the following precau-
tions.
Failure to do so may cause the
driver’s floor mat to slip, possibly
interfering with t
he pedals while
driving. An unexpectedly high
speed may result or it may
become difficult to stop the vehi-
cle. This could lead to an acci-
dent, resulting in death or serious
injury.
■When installing the driver’s
floor mat
●Do not use floor mats designed
for other models or different
model year vehicles, even if
they are Toyota Genuine floor
mats.
●Only use floor mats designed
for the driver’s seat.
●Always install the floor mat
securely using the retaining
hooks (clips) provided.
●Do not use two or more floor
mats on top of each other.
●Do not place the floor mat bot-
tom-side up or upside-down.

281-1. For safe use
Owners Manual_USA_M62064_en
Make sure that all occupants are
wearing their seat belts before
driving the vehicle. (P.29)
Use a child restraint system
appropriate for the child until the child becomes large enough to
properly wear the vehicle’s seat
belt. (
P.52)
Make sure that you can see
backward clearly by adjusting
the inside and outside rear view
mirrors properly. ( P.149, 150,
160)
WARNING
■For safe driving
Observe the following precau-
tions.
Failure to do so m ay result in
death or serious injury.
●Do not adjust the position of the
driver’s seat while driving.
Doing so could cause the driver
to lose control of the vehicle.
●Do not place a cushion between
the driver or passenger and the
seatback.
A cushion may prevent correct
posture from being achieved,
and reduce the effectiveness of
the seat belt and head restraint.
●Do not place anything under the
front seats.
Objects placed under the front
seats may become jammed in
the seat tracks and stop the
seat from locking in place. This
may lead to an accident and the
adjustment mechanism may
also be damaged.
●Always observe the legal speed
limit when driving on public
roads.
●When driving over long dis-
tances, take regular breaks
before you start to feel tired.
Also, if you feel tired or sleepy
while driving, do not force your-
self to continue driving and take
a break immediately.
Correct use of the seat
belts
Adjusting the mirrors

701-4. Theft deterrent system
Owners Manual_USA_M62064_en
1-4.Theft deterrent system
The indicator light flashes after
the power switch has been
turned off to indicate that the
system is operating.
The indicator light stops flashing
after the power switch has been
turned to ACC or ON to indicate
that the system has been can-
celed.
■System maintenance
The vehicle has a maintenance-free
type immobilizer system.
■Conditions that may cause the
system to malfunction
●If the grip portion of the key is in
contact with a metallic object
●If the key is in close proximity to or
touching a key to the security sys-
tem (key with a built-in transpon-
der chip) of another vehicle
■Certification
 P.559
Immobilizer system
The vehicle’s keys have
built-in transponder chips
that prevent the fuel cell
system from starting if a key
has not been previously
registered in the vehicle’s
on-board computer.
Never leave the keys inside
the vehicle when you leave
the vehicle.
This system is designed to
help prevent vehicle theft
but does not guarantee
absolute security against all
vehicle thefts.
Operating the system
NOTICE
■To ensure the system oper-
ates correctly
Do not modify or remove the sys-
tem. If modified or removed, the
proper operation of the system
cannot be guaranteed.

721-4. Theft deterrent system
Owners Manual_USA_M62064_en
For Canada: Unlock the doors
or trunk using the entry func-
tion or wireless remote con-
trol.
 Turn the power switch to ACC
or ON, or start the fuel cell
system. (The alarm will be
deactivated or stopped after a
few seconds.)
■System maintenance
The vehicle has a maintenance-free
type alarm system.
■Triggering of the alarm
The alarm may be triggered in the
following situations:
(Stopping the alarm deactivates the
alarm system.)
●For Canada: The doors are
unlocked using the mechanical
key.
●For Canada: The trunk is opened
using the mechanical key.
●A person inside the vehicle opens
a door, the trunk or hood, or
unlocks the vehicle.
●The 12-volt battery is recharged or
replaced when the vehicle is
locked. ( P.487)
■Alarm-operated door lock
In the following cases, depending
on the situation, the door may auto-
matically lock to prevent improper
entry into the vehicle:
●When a person remaining in the
vehicle unlocks the door and the
alarm is activated.
●While the alarm i s activated, a
person remaining in the vehicle
unlocks the door.
■Customization
Some functions can be customized.
(  P.512)
NOTICE
■To ensure the system oper-
ates correctly
Do not modify or remove the sys-
tem. If modified or removed, the
proper operation of the system
cannot be guaranteed.

772-1. Fuel cell electric vehicle
Owners Manual_USA_M62064_en
2
Fuel cell system
Electric motor (traction motor)
Tailpipe
*: If equipped
■Sounds unique to the fuel cell electric vehicle
Due to the design of y our fuel cell electric vehicle, there are various relays,
valves and pumps whic h under normal driving conditions will pro duce
sounds. This is a normal characte ristic of the vehicle and does not indicate a
malfunction.
Furthermore, these sounds may differ based on usage environment or con-
dition.
Noticeable soundsSource of the sounds
Clunking, clicking and
clackingOperation of relays and hydrogen tank valves
(Sounds may be heard wh en starting or stop-
ping the fuel cell system.)
Knocking
The parking lock is engaged
(Sounds may be heard when pressing the P
position switch or stopp ing the fuel cell sys-
tem.)
Whooshing, squealingGas is flowing through the nozzle and valves
(Sounds may be heard when filling the fuel.)
High pitch sound
 Pulsing sound
 Whooshing sound
Operation of the pumps
(In particular, sounds may be heard when
starting the fuel cell s ystem, accelerating from
a stop, or pressing the H
2O switch. The sound
may be louder when in Br mode or when the
vehicle decelerates during dynamic radar
cruise control.)
 Humming sound
 High pitch soundOperation of the motor
(In particular, sounds may be heard when
accelerating or decelerating.)
Blowing and draining
sound
Exhaust water or air is being purged
May also occur periodically while parked when
it is cold to p revent freezing.
(Sounds may be hear d when vehicle is
stopped, fuel cell system is stopped or while
parked)

832-1. Fuel cell electric vehicle
Owners Manual_USA_M62064_en
2
Fuel cell system
Electric motor (traction motor)
High-voltage cables (orange)
Fuel cell stack (fuel cell and hydrogen pump)
Air compressor
Air conditioning compressor
■If “Hydrogen Leakage Detected
Visit Your Dealer” is displayed
on the multi-information display
A small amount of hydrogen gas
may be leaking. Have the vehicle
inspected immediately at the near-
est Toyota dealer.
■If “FCV System Shutdown Due
to Hydrogen Leakage Stop in a
Safe Place See Owner’s Man-
ual” is displayed on the multi-
information display
●Hydrogen gas may be leaking.
When hydrogen gas is leaking or
some other malfunction is
detected: P. 8 7
●The air conditioning system will
shut off automatically.
■Running out of fuel
When the vehicle has run out of fuel
and the fuel cell system cannot be
started, refuel the vehicle until the
low fuel level warning light ( P.460)
turns off before try ing to restart. It
may not be able to restart if the refu-
eled amount is too low.
■Fuel cell stack
●Depending on the usage environ-
ment, the fuel ce ll power output
may decline over the life of the
vehicle. However, this will have
almost no effect on driving perfor-
mance.
●In the following situations, the fuel
cell power output may decline
faster than normal driving:
• Extended use in areas with high
amounts of dust
• Extended use in areas with high levels of sulfur (such as volcanoes
or hot springs).
• Extended use in areas with high concentrations o f the following
substances:
-Organic solvents, such as paint and
thinner
-Amine-related materials such as
ammonia
-Chlorinated substances such as
salt air and snow-melting agent
• Salt water gets into the air cleaner filter
It is recommended to replace the
air cleaner filter and clean the sur-
rounding components. Have the
vehicle inspected at your Toyota
dealer
• The number of times the fuel cell system is started and stopped is
excessively high
• Extended use in freezing tem- peratures
• Fill fuel with impurities which do not follow ISO-14687
■Hydrogen tanks
●The hydrogen tanks are the high-
pressure storage containers that
are filled with co mpressed hydro-
gen gas. The vehicle can be refu-
eled at hydrogen stations.
●The hydrogen tanks have an expi-
ration date. Vehicles with expired
hydrogen tanks must not be
driven or refueled until the hydro-
gen tanks are replaced. The expi-
ration date is written on the inside
of the fuel door. Consult your Toy-
ota dealer.
●Consult your Toyota dealer if the