TOYOTA MIRAI 2022 Owners Manual

4518-2. Steps to take in an emergency
Owners Manual_USA_M62084_en
8
When trouble arises■Warning messages
The warning messages explained
below may differ from the actual
messages according to operation
conditions and vehicle specifica-
tions.
■Warning buzzer
A buzzer may sound when a mes-
sage is displayed.
In some cases, the buzzer may not
be heard due to being in a noisy
location or audio sound.
WARNING
Your vehicle has also been
equipped with a TPMS (tire pres-
sure warning system) malfunc-
tion indicator to indicate when the
system is not opera ting properly.
The TPMS (tire pressure warning
system) malfunction indicator is
combined with the low tire pres-
sure telltale (tire pressure warning
light). When the system detects a
malfunction, the telltale will flash
for approximately one minute and
then remain continuously illumi-
nated. This sequence will con-
tinue upon subsequent vehicle
start-ups as long as the malfunc-
tion exists. When the malfunction
indicator is illuminated, the sys-
tem may not be able to detect or
signal low tire pressure as
intended.
TPMS (tire pressure warning sys-
tem) malfunctions may occur for a
variety of reasons, including the
installation of replacement or
alternate tires or wheels on the
vehicle that prevent the TPMS
(tire pressure warning system)
from functioning properly. Always
check the TPMS (tire pressure
warning system) malfunction tell-
tale after replacing one or more
tires or wheels on your vehicle to
ensure that the r eplacement or
alternate tires and wheels allow
the TPMS (tire pressure warning
system) to continue to function
properly.
NOTICE
■To ensure the tire pressure
warning system operates
properly
Do not install tires with different
specifications or makers, as the
tire pressure warning system may
not operate properly.
If a war ning message
is displayed
The multi-information dis-
play shows warnings for
system malfunctions and
incorrectly performed oper-
ations, and messages that
indicate a need for mainte-
nance. When a message is
displayed, perform the
appropriate corrective
action for the message.
If a warning message is dis-
played again after the
appropriate actions have
been performed, contact
your Toyota dealer.
Additionally, if a warning
light comes on or flashes at
the same time that a warn-
ing message is displayed,
take the appropriate correc-
tive action for the warning
light. ( P.441)

4528-2. Steps to take in an emergency
Owners Manual_USA_M62084_en
■If “FCV System Stopped Steer-
ing Power Low” is displayed
This message is displayed if the fuel
cell system is stopped while driving.
When steering wheel operations are
heavier than usual, grip the steering
wheel firmly and operate it using
more force th an usual.
■If “FCV System High Temp. FCV
Power Reduced” or “FCV
Power Reduced Due to Exces-
sive Acceleration” is displayed
1 Lower the speed while check the
safety, and run the vehicle like
this for several minutes.
2 If the message goes off, the vehi-
cle can be driven as is, since it
temporarily overheated.
This message may be displayed
when driving under severe operat-
ing conditions. (For example, when
driving up a lo ng steep hill.)
■If “FCV Power Significantly
Reduced” is displayed
The output power of the fuel cell
system is greatly restrained. If it is
displayed frequently, contact your
Toyota dealer.
■If “Stop Vehicle in a Safe Place
Push P Switch” is displayed
There may be a malfunction in the
fuel cell system or the shift position
may be shifted to N for a long time.
Immediately stop the vehicle and
contact your Toyota dealer.
■If “Shift is in N Release Acceler-
ator Before Shif ting” is dis-
played
The accelerator pedal has been
depressed when the shift position is
in N.
Release the accelerator pedal and
shift the shift position to D or R.
■If “Press brake when vehicle is
stopped FCV system may over-
heat” is displayed
The message may be displayed
when the accelerator pedal is depressed to hold the vehicle while
the vehicle is stopped on an incline,
etc. The fuel cell system may over-
heat. Release the accelerator pedal
and depress the brake pedal.
■If “Auto Power OFF to Conserve
Battery” is displayed
Power was turned off due to the
automatic power off function. Next
time when starting the fuel cell sys-
tem, operate the fuel cell system for
approximately 5 minutes to
recharge the 12-volt battery.
■If “Headlight System Malfunc-
tion Visit Your Dealer” is dis-
played
The following systems may be mal-
functioning. Hav e the vehicle
inspected by your Toyota dealer
immediately.
●The LED headlight system
●The automatic headlight leveling
system (if equipped)
●AHB (Automatic High Beam)
■If “Radar Cruise Control
Unavailable See Owner’s Man-
ual” is displayed
The dynamic radar cruise control
with full-speed range system is sus-
pended temporarily or until the prob-
lem shown in the message is
resolved. (Causes and coping meth-
ods: P.210)
■If “Radar Cruise Control
Unavailable” is displayed
The dynamic radar cruise control
with full-speed range system cannot
be used temporarily. Use the system
when it becomes available again.
■If a message that indicates the
malfunction of front camera is
displayed
The following systems may be sus-
pended until the problem shown in
the message is resolved. (P.210,
441)
●PCS (Pre-Collision system)

4538-2. Steps to take in an emergency
Owners Manual_USA_M62084_en
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When trouble arises
●LTA (Lane Tracing Assist)
●Automatic High Beam
●RSA (Road Sign Assist) (if
equipped)
●Dynamic radar cruise control with
full-speed range
■If a message that indicates the
malfunction of radar sensor is
displayed
The following sys tems may be sus-
pended until the pr oblem shown in
the message is resolved. ( P.210,
441)
●PCS (Pre-Collision system)
●LTA (Lane Tracing Assist)
●Dynamic radar cruise control with
full-speed range
■If “Shift System Malfunction
Shifting Unavailable Drive to a
Safe Place and Stop” or “Shift
System Malfunction Driving
Unavailable” is displayed
There is a malfunction in the shift
control system. Have the vehicle
inspected by your Toyota dealer
immediately.
■If a message that indicates the
need for the shift lever opera-
tion is displayed
To prevent the shift lever from being
operated incorrectly or the vehicle
from moving unexpectedly, a mes-
sage that requires shifting the shift
position may be displayed on the
multi-information display. In that
case, follow the in struction of the
message and shift the shift position.
■If a message that indicates the
need for visiting your Toyota
dealer is displayed
The system or part shown on the
multi-information di splay is malfunc-
tioning. Have the vehicle inspected
by your Toyota dealer immediately.
■If a message that indicates the
need for referring to Owner’s
Manual is displayed
●If any of the following messages
are shown on the multi-informa-
tion display, it may indicate a mal-
function. Have the vehicle
inspected by your Toyota dealer
immediately.
• “Smart Key System Malfunction See Owner’s Manual”
• “P Switch Malfunction Apply Park- ing Brake Securely When Parking
See Owner’s Manual”
• “Shift System Mal function Apply
Parking Brake Securely When
Parking See Owner’s Manual”
• “Shift System Unavailable Apply Parking Brake Securely When
Parking See Owner’s Manual”
• “Shift System M alfunction See
Owner’s Manual”
• “Shift System Malfunction Stop in
a Safe Place See Owner’s Man-
ual”
• “Battery Low Shifting Unavailable
See Owner’s Manual”
• “FCV system malfunction”
• “Traction battery system malfunc- tion”
• “Accelerator System Malfunction”
●If any of the following messages
are shown on the multi-informa-
tion display, it may indicate a mal-
function. Immediately stop the
vehicle and contact your Toyota
dealer.
• “Braking Power Low Stop in a Safe Place See Owner’s Manual”
• “FCV System Shutdown Due to
Hydrogen Leakage Stop in a Safe
Place See Owner’s Manual”
●If “FCV system stopped” is shown
on the multi-information display,
the vehicle may have run out of
fuel. Stop the vehicle in a safe
place and, if the fuel level is low,
refuel the vehicle. ( P.81)
●If “Low Auxiliary Battery See
Owner’s Manual” is shown,
• When the display goes off after
several seconds (displays for

4548-2. Steps to take in an emergency
Owners Manual_USA_M62084_enabout 6 seconds): Maintain the
fuel cell system operation for more
than 15 minutes and charge the
12-volt battery.
• When the display does not go off: Start up the fuel cell system using
the procedures: P.471
●If “Maintenance Required for Trac-
tion Battery Cooling Parts See
Owner’s Manual” is shown, the fil-
ters may be clogged, the air intake
vents may be blocked, or there
may be a gap in the duct. There-
fore, perform the following correc-
tion procedure.
• If the air intake vents and filters of the traction batte ry are dirty, per-
form the procedure on P.420 to
clean them.
• If the warning message is shown
when the air intake vents and fil-
ters of the traction battery are not
dirty, have the vehicle inspected
by your Toyota dealer.
■If “Ion Filter Maintenance
Required Visit Your Dealer” is
displayed
Ion filter replacement is necessary.
Contact your Toyota dealer.
NOTICE
■If “Low Auxiliary Battery See
Owner’s Manual” is displayed
frequently
The 12-volt battery may have
deteriorated. As the battery may
discharge in this state when left
unattended, have the battery
inspected by your Toyota dealer.
■If “Maintenance Required For
Traction Battery At Your
Dealer” is displayed
This message indicates that the
traction battery may require
inspection or replacement. Have
the vehicle inspected by your Toy-
ota dealer immediately.
Do not continue driving the vehi-
cle, as the fuel cell system may
become not able to be started
again.

4558-2. Steps to take in an emergency
Owners Manual_USA_M62084_en
8
When trouble arises
 Stop the vehicle in a safe
place on a hard, flat surface.
 Set the parking brake.
 Shift the shift position to P.
 Stop the fuel cell system.
 Turn on the emergency flash-
ers. ( P.432)
 Check the degree of the tire
damage.
Do not remove the nail or screw
from the tire. Removing the
object may widen the opening
and make emergency repair
with the repair kit impossible.
■A flat tire that cannot be
repaired with the emergency
tire puncture repair kit
In the following cases, the tire can-
not be repaired with the emergency
tire puncture repair kit. Contact your
Toyota dealer.
●When the tire is damaged due to
driving without sufficient air pres-
sure
●When there are a ny cracks or
damage at any location on the
tire, such as on the side wall,
except the tread
●When the tire is visibly separated
from the wheel
If you have a flat tire
Your vehicle is not equipped
with a spare tire, but instead
is equipped with an emer-
gency tire puncture repair
kit.
A puncture caused by a nail
or screw passing through
the tire tread can be
repaired temporarily using
the emergency tire puncture
repair kit. (The kit contains a
bottle of sealant. The seal-
ant can be used only once
to temporarily repair one
tire without removing the
nail or screw from the tire.)
Depending on the damage,
this kit cannot be used to
repair the tire. ( P.455)
After temporarily repairing
the tire with the kit, have the
tire repaired or replaced by
your Toyota dealer. Repairs
conducted using the emer-
gency tire puncture repair
kit are only a temporary
measure. Have the tire
repaired and replaced as
soon as possible.
WARNING
■If you have a flat tire
Do not continue driving with a flat
tire.
Driving even a short distance with
a flat tire can damage the tire and
the wheel beyond repair, which
could result in an accident.
Before repairing the tire

4568-2. Steps to take in an emergency
Owners Manual_USA_M62084_en
●When the cut or damage to the
tread is 0.16 in. (4 mm) long or
more
●When the wheel is damaged
●When two or more tires have been
punctured
●When more than 2 sharp objects
such as nails or screws have
passed through the tread on a sin-
gle tire
●When the sealant has expired
Emergency tire puncture repair kit
Towing eyelet
Bottle
Hose
Air release cap
Location of the emergency tire puncture repair kit and
tools
Emergency tire puncture
repair kit components

4578-2. Steps to take in an emergency
Owners Manual_USA_M62084_en
8
When trouble arises
Sticker
Compressor Power plug
Air pressure gauge
Compressor switch
■Note for checking the emer-
gency tire puncture repair kit
Check the sealant expiry date occa-
sionally.
The expiry date is shown on the bot-
tle. Do not use sealant whose expiry
date has already passed. Other-
wise, repairs conducted using the
emergency tire puncture repair kit
may not be performed properly.
■Emergency tire puncture repair
kit
●The emergency tire puncture
repair kit is for filling the car tire
with air.
●The sealant has a limited life
span. The expiry date is marked
on the bottle. The sealant should
be replaced before the expiry
date. Contact your Toyota dealer
for replacement.
●The sealant stored in the emer-
gency tire puncture repair kit can
be used only once to temporarily
repair a single tire. If the sealant
has been used and needs to be
replaced, purchase a new bottle at
your Toyota dealer. The compres-
sor is reusable.
●The sealant can be used when the
outside temperature is from -22°F
(-30°C) to 140°F (60°C).
●The kit is exclusi vely designed for
size and type of ti res originally
installed on your vehicle. Do not
use it for tires that a different size
than the original ones, or for any
other purposes.
●If the sealant gets on your clothes,
it may stain.
●If the sealant adhe res to a wheel
or the surface of the vehicle body,
the stain may not be removable if
it is not cleaned at once. Immedi-
ately wipe away the sealant with a
wet cloth.
●During operation of the repair kit,
a loud operation noise is pro-
duced. This does not indicate a
malfunction.
●Do not use to check or to adjust
the tire pressure.
WARNING
■Caution while driving
●Store the repair kit in the lug-
gage compartment.
Injuries may result in the event
of an accident or sudden brak-
ing.
●The repair kit is exclusively only
for your vehicle.
Do not use repair kit on other
vehicles, which could lead to an
accident causing death or seri-
ous injury.
●Do not use repair kit for tires
that are differen t size than the
original ones, or for any other
purpose. If the tires have not
been completely repaired, it
could lead to an accident caus-
ing death or serious injury.

4588-2. Steps to take in an emergency
Owners Manual_USA_M62084_en
1Remove the luggage mat.
( P.352)
2 Remove the band.
3 Take out the emergency tire
puncture repair kit. ( P.456)1
Take out the repair kit from
the plastic bag.
2 Remove the valve cap from
the valve of the punctured
tire.
3 Extend the hose. Remove
the air release cap from the
hose.
Attach the sticker enclosed with the
bottle on the spec ified locations.
(See step 10.)
You will use the air release cap
again. Therefore keep it in a safe
place.
4 Connect the hose to the
valve.
Screw the end of the hose clock-
WARNING
■Precautions for use of the
sealant
●Ingesting the sealant is hazard-
ous to your health. If you ingest
sealant, consume as much
water as possible, and then
immediately consult a doctor.
●If sealant gets in eyes or
adheres to skin, immediately
wash it off with water. If discom-
fort persists, consult a doctor.
Taking out the emer-
gency tire puncture repair
kit
Emergency repair method

4598-2. Steps to take in an emergency
Owners Manual_USA_M62084_en
8
When trouble arises
wise as far as possible.
5 Make sure that the compres-
sor switch is off.
6 Lift the rubber stopper on the
compressor. 7
Remove the power plug from
the compressor.
8 Connect the power plug to
the power outlet socket.
( P.362)
9 Connect the bottle to the
compressor.
As shown in the illustration, insert
the bottle securely into the com-
pressor until the upper side of the
mark on the bottle is aligned with

4608-2. Steps to take in an emergency
Owners Manual_USA_M62084_enthe upper end of the notch.
10
Attach the sticker provided
with the tire puncture repair
kit to a position easily seen
from the driver’s seat.
11 Check the specified tire infla-
tion pressure.
Tire inflation pressure is specified
on the label on the driver’s side pil-
lar as shown. ( P.487)
12Start the fuel cell system.
( P.172)
13To inject the sealant and inflate the tire, turn the com-
pressor switch on.
14Inflate the tire until the speci- fied air pressure is reached.
The sealant will be injected
and the pressure will spike to
between 44 psi (300 kPa, 3.0
kgf/cm
2 or bar) and 58 psi
(400 kPa, 4.0 kgf/cm
2 or bar),
then gradually decrease.