trunk TOYOTA MIRAI 2022 Service Manual

4007-3. Do-it-yourself maintenance
Owners Manual_USA_M62084_en
The 12-volt battery is located in
the right-hand side of the trunk.
Remove the luggage mat: P. 3 5 2
■Before recharging
When recharging, the 12-volt bat-
tery produces hydrogen gas which
is flammable and explosive. There-
fore, observe the following precau-
tions before recharging:
●If recharging with the 12-volt bat-
tery installed on the vehicle, be
sure to disconnect the ground
cable.
●Make sure the charger is off when
connecting and disconnecting the
charger cables to the 12-volt bat-
tery.
■After recharging/reconnecting
the 12-volt battery
●Unlocking the doors using the
smart key system may not be pos-
sible immediately after reconnect-
ing the 12-volt battery. If this
happens, use the wireless remote
control or the mechanical key to
lock/unlock the doors.
●Start the fuel cell system with the
power switch in ACC. The fuel cell
system may not start with the
power switch turned off. However,
the fuel cell system will operate
normally from the second attempt.
WARNING
■When adding washer fluid
Do not add washer fluid when the
fuel cell system is hot or operating
as washer fluid contains alcohol
and may catch fire if spilled on the
fuel cell system, etc.
NOTICE
■Do not use any fluid other
than washer fluid
Do not use soapy water or anti-
freeze instead of washer fluid.
Doing so may cause streaking on
the vehicle’s painted surfaces, as
well as damaging the pump lead-
ing to problems of the washer
fluid not spraying.
■Diluting washer fluid
Dilute washer fluid with water as
necessary.
Refer to the freezing tempera-
tures listed on the label of the
washer fluid bottle.
12-volt batter y
Location

4267-3. Do-it-yourself maintenance
Owners Manual_USA_M62084_enRemove the footwe
ll lights connec-
tor.
Remove the lid.
Make sure to push the claw when
removing/installing the lid.
Trunk
Remove the luggage mat
(  P.352), and while lifting up the
luggage under tray, use a flathead
screw driver and remove the clip.
Push the tab in and lift the lid off.

4688-2. Steps to take in an emergency
Owners Manual_USA_M62084_en
1Remove the cover inside the
trunk.
2 After removing the cover, pull
the lever to unlock the fuel
door and it will be ready to
open as usual.
■When the electronic key does
not work properly
●Make sure that the smart key sys-
tem has not been deactivated in
the customization setting. If it is
off, turn the function on.
●Check if battery-saving mode is
set. If it is set, cancel the function.
( P.131)
If the fuel door cannot
be opened
If the fuel door opener
switch cannot be operated,
the following procedure can
be used to open the fuel
door.
Opening the fuel door
If the electronic key
does not operate prop-
erly
If communication between
the electronic key and vehi-
cle is interrupted ( P.132)
or the electronic key cannot
be used because the battery
is depleted, the smart key
system and wireless remote
control cannot be used. In
such cases, the doors and
trunk can be opened and
the fuel cell system can be
started by following the pro-
cedure below.
NOTICE
■In case of a smart key system
malfunction or other key-
related problems
Take your vehicle with all the elec-
tronic keys provided with your
vehicle to your Toyota dealer.

4698-2. Steps to take in an emergency
Owners Manual_USA_M62084_en
8
When trouble arises
■Locking and unlocking the
door
Use the mechanical key
( P.120) in order to perform the
following operations:
1 Locks all the doors
2 Unlocks all the doors
■Locking the door
1 With the door open, push
down the inside lock button.
2 Close the door.
■Trunk
Turn the mechanical key clock-
wise to open. ( P.71)
■Key linked functions
1 Closes the windows (turn and
hold)
2 Opens the windows (turn and
hold)
These settings mus t be customized
at your Toyota dealer.
Locking and unlocking
the doors, unlocking the
trunk
WARNING
■When using the mechanical
key and operating the power
windows
Operate the power window after
checking to make sure that there
is no possibility of any passenger
having any of their body parts
caught in the window.
Also, do not allo w children to
operate the mechanical key. It is
possible for children and other
passengers to get caught in the
power window.

4999-2. Customization
Owners Manual_USA_M62084_en
9
Vehicle specifications
■Alarm ( P.70)
*: The default setting varies according to country.
■Gauges, meters and multi-information display ( P.97, 100)
FunctionDefault settingCustomized
setting
Deactivates the alarm when
the doors or trunk are
unlocked using the mechani-
cal key
On*Off——O
Function*1Default settingCustomized setting
LanguageEnglishFrenchOO—Spanish
Units*2miles (MPGe)km (kg/100km)—O—
Eco Accelerator GuidanceOnOff—O—
Fuel economy display
Total average (Average fuel consumption [after reset])
Trip average
(Average fuel consumption [after start])
—O—Tank average (Average fuel consumption
[after refuel])
Audio system linked displayOnOff—O—
Energy monitorOnOff—O—
Drive information typeTrip (after start)To t a l ( a f t e r reset)—O—
Drive information items (First
item)Distance
Average vehi-cle speed
—O—
Elapsed time
Drive information items (Sec-
ond item)Elapsed time
Average vehi-cle speed
—O—
Distance

5019-2. Customization
Owners Manual_USA_M62084_en
9
Vehicle specifications
■Smart key system and wireless remote control ( P.121, 127,
130)
■Smart key system ( P.121, 127, 130)
Automatic door locking func-
tion
Shift position
linked door
locking opera- tionOff
O—OSpeed linked door locking operation
Automatic door unlocking
function
Shift position linked door unlocking operationOff
O—ODriver’s door linked door unlocking operation
Locking/unlocking of the
trunk when all doors are
locked/unlocked
OnOff——O
FunctionDefault settingCustomized setting
Operating signal (Buzzers)5OffO—O1 to 7
Operation signal (Emergency
flashers)OnOffO—O
Time elapsed before auto-
matic door lock function is
activated if door is not
opened after being unlocked
60 seconds
Off
O—O30 seconds
120 seconds
Open door warning buzzerOnOff——O
FunctionDefault settingCustomized setting
Smart key systemOnOff——O
Smart door unlockingDriver’s doorAll the doorsO—O
FunctionDefault settingCustomized setting

5029-2. Customization
Owners Manual_USA_M62084_en
■Wireless remote control (P.119, 121, 127)
■Rear seat reminder (P.123)
Time elapsed before unlock-
ing all the door when gripping
and holding the driver’s door
handle
2 seconds
Off
——O1.5 seconds
2.5 seconds
Number of consecutive door
lock operations2 timesAs many as
desired——O
FunctionDefault settingCustomized setting
Wireless remote controlOnOff——O
Unlocking operation
Driver’s door unlocked in
one step, all doors
unlocked in two step
All doors
unlocked in one step
O—O
Trunk unlocking operationPress and hold (short)
One short press
——OPush twice
Press and hold (long)
Off
Theft deterrent panic modeOnOff——O
Locking operation when door
openedOnOffO—O
FunctionDefault settingCustomized setting
Indication to prevent mis-
placement in the rear seatOnOff—O—
FunctionDefault settingCustomized setting

524What to do if... (Troubleshooting)
Owners Manual_USA_M62084_en
1-1.What to do if... (Troubleshooting)What to do if... (Troubleshooting)
 If you lose your mechanical
keys, new genuine mechani-
cal keys can be made by your
Toyota dealer. ( P.467)
 If you lose your electronic
keys, the risk of vehicle theft
increases significantly. Con-
tact your Toyota dealer imme-
diately. ( P.467)
 Is the electronic key battery
weak or depleted? ( P.423)
 Is the power switch in ON?
When locking the doors, turn the
power switch off. ( P.176)
 Is the electronic key left inside
the vehicle?
When locking the doors, make sure that you have the
electronic key on
your person.
 The function may not operate
properly due to the condition
of the radio wave. ( P.132)
 Is the child-protector lock set?
The rear door cannot be opened
from inside the vehicle when the
lock is set. Open the rear door from
outside and then unlock the child-
protector lock. ( P.124)
 The function to prevent the
electronic key from being left
inside the trunk will operate
and you can open the trunk as
usual. Take the key out from
the trunk. ( P.128)
 Did you press the power
switch while firmly depress-
ing the brake pedal?
( P.172)
 Is the electronic key any-
where detectable inside the
If you have a problem,
check the following before
contacting your Toyota
dealer.
The doors cannot be
locked, unlocked, opened
or closed
You lose your keys
The electronic key does
not operate properly
The doors cannot be
locked or unlocked
The rear door cannot be
opened
The trunk lid is closed
with the electronic key
left inside
If you think something is
wrong
The fuel cell system does
not start

Owners Manual_USA_M62084_en
525What to do if... (Troubleshooting)
vehicle? (P.130)
 Is the steering wheel
unlocked? ( P.173)
 Is the electronic key battery
weak or depleted?
In this case, the fuel cell system
can be started in a temporary way.
( P.470)
 Is the 12-volt battery dis-
charged? ( P.471)
 It is locked automatically to
prevent theft of the vehicle.
( P.173)
 Is the window lock switch
pressed?
The power window except for the
one at the driver’s seat cannot be
operated if the win dow lock switch
is pressed. ( P.158)
 The auto power off function
will be operated if the vehicle
is left in ACC for a period of
time. ( P.176) 
The seat belt reminder light is
flashing
Are the driver and the front passen-
ger wearing the seat belts?
( P.448)
 The parking brake indicator is
on
Is the parking br ake released?
(  P.183)
Depending on the situation,
other types of warning buzzer
may also sound. ( P.441, 451)
 Did anyone inside the vehicle
open a door during setting the
alarm?
The sensor detects it and the alarm
sounds. ( P. 7 0 )
Do one of the following to deac-
tivate or stop the alarms:
 Except for Canada: Unlock
the doors.
 Except for Canada: Unlock
the trunk using the mechani-
cal key.
 For Canada: Unlock the doors
or trunk using the entry func-
tion or wireless remote con-
trol.
The steering wheel can-
not be turned after the
fuel cell system is
stopped
The windows do not open
or close by operating the
power window switches
The power switch is
turned off automatically
A warning buzzer sounds
during driving
An alarm is a ctivated and
the horn sounds

528Alphabetical Index
Owners Manual_USA_M62084_en
Average vehicle speed........... 104
B
Back-up lights Replacing light bulbs ............ 429
Battery (12-volt battery) ......... 400 Battery checking................... 400
If the 12-volt battery is dis-charged .............................. 471
Preparing and c hecking before
winter.................................. 320
Warning light ........................ 442
Battery (traction battery) ......... 79
Blind Spot Monitor (BSM) ...... 249 Enabling/disabling the system........................................... 251
Brake Brake hold ............................ 186
Fluid ............................. 399, 486
Parking brake ....................... 183
Warning light ........................ 441
Brake assist ............................ 315
Break-in tips ........ ................... 162
Brightness control Instrument panel light control . 98
BSM (Blind Spot Monitor) ...... 249 Enabling/disabling the system........................................... 251
Buzzer Hands off steering wheel warn-ing (LTA) ............................. 232
Vehicle sway warning function (LTA) ................................... 233
C
Care ................................. 380, 384 Aluminum wheel ornaments . 380
Aluminum wheels ................. 380
Exterior ................................. 380
Interior .................................. 384
Roof film ............................... 381 Seat belts .............................384
Traction battery air intake vent
...........................................420
Cargo and luggage .................167
Cargo capacity ........................170
Chains......................................321
Child restraint system ..............52 Fixed with a LATCH system ...60
Fixed with a seat belt..............56
Front passenger occupant clas-sification system ...................46
Points to remember ................52
Riding with children ................51
Types of child restraint system installation method ...............54
Using an anchor bracket ........62
Child safety ...............................51 12-volt battery precautions .401, 474
Airbag precautions .................39
Child restraint system .............54
Electronic sunshade .............356
Heated steering wheel and seat heater precautio ns..............342
How your child should wear the seat belt ................................30
Power window lock switch ....158
Power window precautions...157
Rear door child-protectors ....124
Removed electronic key battery precautions .........................424
Seat belt extender precautions .............................................30
Seat belt precautions..............51
Trunk precautions .................126
Child-protectors......................124
Cleaning ..........................380, 384 Aluminum wheel ornaments .380
Aluminum wheels .................380
Exterior .................................380
Interior ..................................384
Radar sensor ........................208