2020 TOYOTA MIRAI key

4548-2. Steps to take in an emergency
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Make sure the “READY” indicator comes on. If the indicator does
not come on, contact your Toyota dealer.
Once the fuel cell system has started, remove the jumper cables in
the exact reverse order from which they were connected.
Close the exclusive jump starting terminal cover, reinstall the motor
cover and the fuse box cover to its original position.
Once the fuel cell system starts, have the vehicle inspected at your
Toyota dealer as soon as possible.
■ Starting the fuel cell system when the 12-volt battery is discharged
The fuel cell system cannot be started by push-starting.
■ To prevent 12-volt battery discharge
●Turn off the headlights and the audio system while the fuel cell system is off.
● Turn off any unnecessary electrical components when the vehicle is running
at a low speed for an extended period, such as in heavy traffic .
■ Charging the 12-volt battery
The electricity stored in the 12-volt battery will discharge gr adually even when
the vehicle is not in use, due to natural discharge and the dra ining effects of
certain electrical appliances. If the vehicle is left for a lon g time, the 12-volt
battery may discharge, and the fuel cell system may be unable to start. (The
12-volt battery recharges automatically while the fuel cell sys tem is operat-
ing.)
■ When the 12-volt battery is removed or discharged
● In some cases, it may not be possible to unlock the doors using the smart
key system when the 12-volt battery is discharged. Use the wire less remote
control or the mechanical key to lock or unlock the doors.
● The fuel cell system may not start on the first attempt after t he 12-volt bat-
tery has recharged but will start normally after the second att empt. This is
not a malfunction.
● The power switch mode is memorized by the vehicle. When the 12- volt bat-
tery is reconnected, the system will return to the mode it was in before the
12-volt battery was discharged. Before disconnecting the 12-volt battery,
turn the power switch off.
If you are unsure what mode the power switch was in before the 12-volt bat-
tery discharged, be especially careful when reconnecting the 12 -volt battery.
● If the 12-volt battery is depleted with the shift position in P , it will not be pos-
sible to shift the shift position other than P. In this case, the vehicle cannot
be towed without lifting both front wheels because the front wheels are
locked by the parking lock. ( P. 412)
8
9
10

4859-2. Customization
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9
Vehicle specifications
Some function settings are changed simultaneously with other func-
tions being customized. Contact your Toyota dealer for further details.
Settings that can be changed by the navigation system
Settings that can be changed by the multi-information display
Settings that can be chan ged by the vehicle switch
Settings that can be chan ged by your Toyota dealer
Definition of symbols: O = A vailable, — = Not available
■Door lock (P. 132, 449)
Customizable features
FunctionDefault
settingCustomized setting
Unlocking using a
mechanical key
Driver’s door unlocked in
first step, all
doors
unlocked in
second step
All doors
unlocked in first step
———O
Automatic door locking
function
Shift position
linked door locking
operationOff
O——OSpeed linked door locking
operation
Automatic door unlocking
function
Shift position linked door
unlocking operationOff
O——ODriver’s door linked door
unlocking operation

4869-2. Customization
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Smart key system and wireless remote control (
P. 132 143)
■Smart key system ( P. 1 4 3 )
FunctionDefault
settingCustomized setting
Operation signal (emergency
flashers)OnOffO——O
Operation buzzer volumeLevel 5OffO——OLevel 1 to 7
Time elapsed before the
automatic door lock function
is activated if a door is not
opened after being unlocked
30 seconds
Off
O——O60 seconds
120 seconds
Open door reminder buzzerOnOff———O
FunctionDefault
settingCustomized setting
Smart key systemOnOff———O
Smart door unlockingDriver’s doorAll the doorsO—OO
Number of consecutive door
lock operations2 timesAs many as desired———O

4879-2. Customization
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9
Vehicle specifications
■Wireless remote control (P. 1 3 2 138)
■Power windows ( P. 167)
■Driving position memory ( P. 153)
FunctionDefault
settingCustomized setting
Wireless remote controlOnOff———O
Unlocking operation
Driver’s door
unlocked in
first step, all doors
unlocked in
second step
All doors
unlocked in first step
O——O
Trunk unlocking operationPress and
hold (short)
One short press
———OPush twice
Press and
hold (long)
Off
Panic functionOnOff———O
FunctionDefault settingCustomized setting
Mechanical key linked
operationOffOn———O
Wireless remote control
linked open operationOffOn———O
Open window reminder
buzzerOnOff———O
FunctionDefault settingCustomized setting
Driver’s seat movement
when exiting the vehicleFullOffO——OPartial
Selection the door linking
driving position memory with
door unlock operation
Driver’s doorAll doors———O

4899-2. Customization
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9
Vehicle specifications
■Illumination (P. 3 1 7 )
■Automatic air c onditioning system ( P. 306)
FunctionDefault
settingCustomized setting
Time elapsed before the
interior lights turn off15 seconds
Off
O——O7.5 seconds
30 seconds
Operation after the power
switch is turned offOnOff———O
Operation when the doors
are unlockedOnOff———O
Operation when you
approach the vehicle with the
electronic key on your
person
OnOff———O
Footwell lightingOnOff———O
Shift lever lightingOnOff———O
FunctionDefault
settingCustomized setting
Reaction when the A/C
switch is pressed05 (Slow)01 (Fast)
to 05 (Slow)——O—
Operation noise when the
A/C switch is pressedOnOff——O—
Display popup when the A/C
switch is pressedOnOff——O—
A/C auto switch operationOnOffO——O

4939-2. Customization
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9
Vehicle specifications
■Vehicle customization
●When the speed linked door locking function and shift position linked door
locking function are both on, the door lock operates as follows .
• When shifting the shift position to any position other than P, all the doors
will be locked.
• If the vehicle is started with all the doors locked, the speed linked door locking function would not operate.
• If the vehicle is started with any door unlocked, the speed li nked door
locking function will operate.
● When the smart key system is off, smart door unlocking cannot be custom-
ized.
● When the doors remain closed after unlocking the doors and the automatic
door lock function is activated, the signals will be generated in accordance
with the operation signal (buzzer) and the operation signal (em ergency
flashers) settings.
■ In the following situations, customize mode in which the settin gs can be
changed through the multi-information display will automaticall y be
turned off.
● A warning message appears after the customize mode screen is di splayed.
● The vehicle begins to move while the customize mode screen is d isplayed.
NOTICE
■During customization
To prevent 12-volt battery discharge, ensure that the fuel cell system is
operating while customizing features.

510What to do if... (Troubleshooting)
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What to do if... (Troubleshooting)
●If you lose your mechanical keys, new genuine mechanical keys can be
made by your Toyota dealer. ( P. 129)
●If you lose your electronic keys, the risk of vehicle theft inc reases signifi-
cantly. Contact your Toyota dealer immediately. ( P. 131)
●Is the key battery weak or depleted? (P. 400)
●Is the power switch in ON mode?
When locking the doors, turn the power switch off. ( P. 188)
●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 t he radio
wave. ( P. 146)
●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. 135)
●The function to prevent the electronic key from being left insi de the trunk
will operate and you can open the trunk as usual. Take the key out from the
trunk. ( P. 140)
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 doors cannot be locked or unlocked
The rear door cannot be opened
The trunk lid is closed with t he electronic key left inside

511What to do if... (Troubleshooting)
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●Did you press the power switch while firmly depressing the brake pedal?
( P. 186)
●Is the shift position in P? ( P. 194)
●Is the electronic key anywhere detectable inside the vehicle? ( P. 144)
●Is the electronic key battery weak or depleted?
In this case, the fuel cell system can be started in a temporary way.
( P. 450)
●Is the 12-volt battery discharged? ( P. 452)
●Is the window lock switch pressed?
The power window except for the one at the driver’s seat cannot be oper-
ated if the window lock switch is pressed. ( P. 167)
●The auto power off function will be operated if the vehicle is left in ACCES-
SORY or ON mode (the fuel cell system is not operating) for a p eriod of
time. ( P. 188)
If you think something is wrong
The fuel cell syst em does not start
The windows do not open or close by operating the power
window switches
The power switch is turned off automatically