2023 TOYOTA MIRAI Owners Manual

4658-2. Steps to take in an emergency
Owners Manual_USA_M62064_en
8
When trouble arises
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. Have 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.217)
■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 sys tems may be sus-
pended until the pr oblem shown in
the message is resolved. ( P.217,
454)
●PCS (Pre-Collision system)
●LTA (Lane Tracing Assist)
●AHB (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 systems may be sus-
pended until the problem shown in
the message is resolved. (P.217,
454)
●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 malfunc tion 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 incorrectl y 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 regarding
Advanced Drive is displayed
Refer to “Toyota Teammate
Advanced Drive OWNER’S MAN-
UAL” at Toyota.com for details.

4668-2. Steps to take in an emergency
Owners Manual_USA_M62064_en
■If a message that indicates the
need for visiting your Toyota
dealer is displayed
The system or part shown on the
multi-information display 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 you r 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 Malfunction 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 Malfunction 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. Immediat ely 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.83)
●If “Low Auxiliary Battery See
Owner’s Manual” is shown,
• When the display goes off after several seconds (displays for
about 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. 4 8 5
●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.
• Cleaning the traction battery air intake vents ( P.433)
If the warning message is shown
even if the vents are cleaned,
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 you r Toyota dealer.

4678-2. Steps to take in an emergency
Owners Manual_USA_M62064_en
8
When trouble arises
NOTICE
■If “Maintenance Required For
Traction Battery At Your
Dealer” is displayed
This message indi cates 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.
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.468)
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.

4688-2. Steps to take in an emergency
Owners Manual_USA_M62064_en
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.446)
 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 t he emergency
tire puncture repair kit
In the following ca ses, 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 any 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
●When the cut or damage to the
tread is 0.16 in. (4 mm) long or
more
●When the wheel is damaged
●W h e n t w o o r m o r e t i r e s h a v e b e e n
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
Before repairing the tire

4698-2. Steps to take in an emergency
Owners Manual_USA_M62064_en
8
When trouble arises
Ty p e A Emergency tire puncture repair kit
Towing eyelet
Location of the emergency ti re puncture repair kit and
tools

4708-2. Steps to take in an emergency
Owners Manual_USA_M62064_en
Ty p e B
Emergency tire puncture repair kit
Towing eyelet
BottleHose
Air release cap
Sticker
Compressor
Power plug
Air pressure gauge
Compressor switchEmergency tire puncture
repair kit components

4718-2. Steps to take in an emergency
Owners Manual_USA_M62064_en
8
When trouble arises
■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 exclusively designed for
size and type of tires 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 adheres 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.
■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.

4728-2. Steps to take in an emergency
Owners Manual_USA_M62064_en
1Remove the luggage mat.
( P.361)
2 Remove the band.
3 Take out the emergency tire
puncture repair kit. ( P.469)
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-
Taking out the emer-
gency tire puncture repair
kit
Emergency repair method