2023 TOYOTA MIRAI ABS

4127-3. Do-it-yourself maintenance
Owners Manual_USA_M62064_en
■Checking fluid level
The brake fluid level should be
between the “MAX” and “MIN”
lines on the tank.
Brake fluid reservoir cap
“MAX” line
“MIN” line
■Adding fluid
Make sure to check the fluid
type and prepare the necessary
item.
 Fluid type
FMVSS No.116 DOT 3 or SAE
J1703 brake fluid
FMVSS No.116 DOT 4 or SAE
J1704 brake fluid
Item
Clean funnel
■Brake fluid can absorb moisture
from the air
Excess moisture in the brake fluid
can cause a dangerous loss of brak-
ing efficiency. Use only newly
opened brake fluid.
If any washer does not work or
the warning message appears
on the multi-information display,
the washer tank may be empty.
Add washer fluid.
Checking and adding the
brake fluidWARNING
■When filling the reservoir
Take care as brake fluid can harm
your hands and eyes and damage
painted surfaces.
If fluid gets on your hands or in
your eyes, flush the affected area
with clean water immediately.
If you still experi ence discomfort,
see a doctor.
NOTICE
■If the fluid level is low or high
It is normal for the brake fluid level
to go down slight ly as the brake
pads wear out or when the fluid
level in the accumulator is high.
If the reservoir needs frequent
refilling, there m ay be a serious
problem.
Adding the washer fluid

4347-3. Do-it-yourself maintenance
Owners Manual_USA_M62064_en
1Turn the power switch off.
2 Remove the grille.
3 Remove the filter from the air
intake vent grille.
If dust has accumu lated on the air
intake vent grille, remove t he dust
with a vacuum cleaner, etc.
4 Remove the dust and sand
from the filter.
Using a vacuum cleaner, etc.,
absorb dust and sand from the filter
by profiling the nozzle lightly along
the fold.
5Hold the filter to the light and
check if it is not clogged.
If the dust or sand cannot be
removed completely, contact your
Toyota dealer.
6Reinstall the filter to the grille.
NOTICE
■If “Maintenance Required for
Traction Battery Cooling
Parts See Owner’s Manual” is
shown on the multi-informa-
tion display
Clean the air intake vents immedi-
ately.
If the vehicle is continuously
driven with the warning message
displayed, it may cause a mal-
function or output restriction of the
traction battery.
Cleaning procedure

4387-3. Do-it-yourself maintenance
Owners Manual_USA_M62064_en
1Turn the power switch off.
2 Open the fuse box cover.
Fuel cell unit compartment:
type A fuse box
Push the tabs in and lift the lid off.
Fuel cell unit compartment:
type B fuse box
Remove the fuel cell unit compart-
ment cover ( P.409) and push the
tabs in and lift the lid off.
NOTICE
■When replacing the battery
Use a flathead screwdriver of
appropriate size. Applying exces-
sive force may deform or damage
the cover.
■For normal operation after
replacing the battery
Observe the following precautions
to prevent accidents:
●Always work with dry hands.
Moisture may cau se the battery
to rust.
●Do not touch or move any other
component inside the remote
control.
●Do not bend either of the battery
terminals.
Checking a nd replac-
ing fuses
If any of the electrical com-
ponents do not operate, a
fuse may have blown. If this
happens, check and replace
the fuses as necessary.
Checking and replacing
fuses

4568-2. Steps to take in an emergency
Owners Manual_USA_M62064_en
■ABS warning light
■Electric power steering system warning light (warning
buzzer)
■PCS warning light
Warning lightDetails/Actions
(U.S.A.)
or
(Canada)
Indicates a malfunction in:
The ABS; or
 The brake assist system
 Have the vehicle inspecte d by your Toyota dealer
immediately.
Warning lightDetails/Actions
(Red)
or
(Yellow)
Indicates a malfunct ion in the EPS (Electric Power Steer-
ing) system
 Have the vehicle inspecte d by your Toyota dealer
immediately.
Warning lightDetails/Actions
(Flashes or illu- minates)
When a buzzer sounds simultaneously:
Indicates a malfunct ion has occurred in the PCS (Pre-Colli-
sion System).
 Have the vehicle inspecte d by your Toyota dealer
immediately.
When a buzzer does not sound:
The PCS (Pre-Collision Syst em) has become temporarily
unavailable, corrective ac tion may be necessary.
 Follow the instructions dis played on the multi-infor-
mation display. ( P.217, 464)
If the PCS (Pre-Collision Syst em) or VSC (Vehicle Stability
Control) system is disabled, the PCS warning light will illu-
minate.
 P.323

4628-2. Steps to take in an emergency
Owners Manual_USA_M62064_enat the specified level and perform
initialization. (
P.420)
■The tire pressure warning light
may come on due to natural
causes
The tire pressure warning light may
come on due to natural causes such
as natural air leaks and tire inflation
pressure changes caused by tem-
perature. In this case, adjusting the
tire inflation pressure will turn off the
warning light (after a few minutes).
■Conditions that the tire pres-
sure warning system may not
function properly
 P. 4 1 9
WARNING
■If both the ABS and the brake
system warning lights remain
on
Stop your vehicle in a safe place
immediately and contact your Toy-
ota dealer.
The vehicle will become
extremely unstable during brak-
ing, and the ABS system may fail,
which could cause an accident
resulting in death or serious injury.
■When the electric power
steering system warning light
comes on
When the light comes on yellow,
the assist to the power steering is
restricted. When the light comes
on red, the assist to the power
steering is lost and handling oper-
ations of the steering wheel
become extremely heavy.
When steering wheel operations
are heavier than usual, grip the
steering wheel firmly and operate
it using more force than usual.
■If the tire pr essure warning
light comes on
Be sure to observe the following
precautions.
Failure to do so could cause a
loss of vehicle control and result
in death or serious injury.
●Check and adjust the tire infla-
tion pressure immediately.
●If the tire pressure warning light
comes on even after tire infla-
tion pressure adjustment, it is
probable that you have a flat
tire. Have the flat tire replaced
by the nearest Toyota dealer.
●Avoid abrupt maneuvering and
braking.
If the vehicle tires deteriorate,
you could lose control of the
steering wheel or the brakes.
■If a blowout or sudden air
leakage should occur
The tire pressure warning system
may not activate immediately.
■Maintenance of the tires
Each tire, includi ng the spare (if
provided), should be checked
monthly when cold and inflated to
the inflation pressure recom-
mended by the vehicle manufac-
turer on the vehicle placard or tire
inflation pressure label (tire and
load information label). (If your
vehicle has tires of a different size
than the size indicated on the
vehicle placard or tire inflation
pressure label [tire and load infor-
mation label], you should deter-
mine the proper tire inflation
pressure for those tires.)

4858-2. Steps to take in an emergency
Owners Manual_USA_M62064_en
8
When trouble arises
If you have a set of jumper (or
booster) cables and a second
vehicle with a 12-volt battery,
you can jump start your vehicle
by following the steps below.
1 Confirm that the electronic
key is being carried.
When connecting the jumper (or
booster) cables, depending on the
situation, the ala rm may activate and doors locked. (
P. 7 2 )
2 Open the hood. Remove the
fuse box cover. ( P.406)
Push the tabs in and lift the lid off.
3 Open the exclusive jump
starting terminal cover.
4 Connect a positive jumper cabl e clamp to on your vehicle and
connect the clamp on the other end of the positive cable to on
the second vehicle. Then, connect a negative cable clamp to
on the second vehicle and connect the clamp at the other end of
the negative cable to .
If the 12-volt batter y is
discharged
The following procedures
may be used to start the fuel
cell system if the 12-volt
battery is discharged.
You can also call your Toy-
ota dealer or a qualified
repair shop.
Restarting the fuel cell
system

Owners Manual_USA_M62064_en
543Alphabetical Index
Alphabetical Index
A
A/C ................................... 333, 340Air conditioning filter ............. 432
Automatic air conditioning sys-tem ............................. 333, 340
Eco air conditioning mode .. 334, 341
Front seat concentrated airflow mode (S-FLOW) ................. 345
ABS (Anti-lock Brake System) ............................................... 322Warning light ........................ 456
ACA (Active Cornering Assist) ............................................... 322
ACC ......................................... 183
Active Cornering Assist (ACA) ............................................... 322
Active Sound Control (ASC).. 196
AHB (Automatic High Beam) . 200
Air conditioning filter ............. 432
Air conditioning system 333, 340 Air conditioning filter ............. 432
Automatic air conditioning sys-tem ............................. 333, 340
Eco air conditioning mode .. 334, 341
Front seat concentrated airflow mode (S-FLOW) ................. 345
Air purification screen ........... 119
Airbags ...................................... 34 Airbag operating conditions.... 36
Airbag precautions for your child............................................. 39
Correct driving posture ........... 27
Curtain shield airbag operating conditions ............................. 37
Curtain shield airbag precautions ............................................. 39
Front passenger occupant clas- sification system ................... 46 General airbag precautions ....39
Locations of airbags ...............34
Modification and disposal of air-
bags......................................42
Side airbag operating conditions .............................................37
Side airbag precautions..........39
Side and curtain shield airbags operating conditions .............37
Side and curtain shield airbags precautions ...........................39
SRS airbags ...........................34
SRS warning light .................455
Alarm .........................................71 Warning buzzer ....................454
ALL AUTO control ..................332
Anchor brackets ... ..............54, 62
Antennas (smart key system)136
Anti-lock Brake System (ABS) ...............................................322Warning light.........................456
Approach warning ..................251
Armrest ......... ......................... ..371
ASC (Active Sound Control) ..196
Assist grips .............................371
Audio system-linked display . 111
Automatic air conditioning sys- tem .................................333, 340Eco air conditioning mode ..334, 341
Automatic air conditioning sys- tem (vehicles with 12.3-inch dis-
play) .......................................340
Automatic air conditioning sys- tem (vehicles with 8-inch dis-
play) .......................................333
Automatic headlight leveling system ...................................199
Automatic High Beam ............200
Automatic light control system ...............................................199

556Alphabetical Index
Owners Manual_USA_M62064_en
Trunk grip ............................. 134
Trunk light............................. 134
Trunk opener main switch .... 135
Trunk opener switch ............. 133
Wireless remote control ....... 134
Trunk light ............................... 134
Turn signal lights.................... 190 Replacing light bulbs ............ 443
Turn signal lever ................... 190
U
USB charging ports................ 364
V
Vanity lights ............................ 380
Vanity mirrors ......................... 380Vanity lights .......................... 380
VDIM (Vehicle Dynamics Inte- grated Management) ............ 322
Vehicle data recording ............... 7
Vehicle Dynamics Integrated Management (VDIM) ............. 322
Vehicle identifi cation number496
Vehicle information display ... 111
Vehicle Stability Control (VSC) ............................................... 322
Ventilators (seat ventilators) . 351
VSC (Vehicle Stability Control) ............................................... 322
W
Warning buzzers Approach warning ................ 251
Brake hold ............................ 459
Brake Override System ........ 459
Brake system ....................... 454
Drive-Start Control ............... 459
Electric power steering ......... 456
Fuel cell system overheat .... 455 Hands off steering wheel warn-
ing (LTA) .............................239
High coolant temperature .....455
Hydrogen leak ......................454
Intuitive parking assist ..268, 457
LTA (Lane Tracing Assist) ...230, 234, 457
Open door ....................128, 130
Open window........................163
PCS (Pre-Collisio n System) .456
PKSB (Parking Support Brake) ...........................................457
Pre-collision braking .............219
Pre-collision warn ing ............219
RCD (Rear Camera Detection) ...........................................458
RCTA (Rear Cross Traffic Alert) ...........................................458
Rear seat reminder ...............129
Seat belt .......................460, 461
SRS airbag ...........................455
Vehicle sway warning function (LTA) ...................................240
Warning label ............................81
Warning lights ...................95, 454 ABS ......................................456
Brake hold operated indicator...........................................459
Brake Override System ........459
Brake system ........................454
Charging system ..................455
Drive-Start Control ................459
Electric power steering .........456
Fuel cell system overheat .....455
High coolant temperature .....455
Hydrogen leak ......................454
Intuitive parking assist OFF indi- cator ...................................457
Low fuel level........................460
LTA indicator .........................457
Parking brake indicator.........459