2020 TOYOTA MIRAI lights

4248-2. Steps to take in an emergency
MIRAI_OM_USA_OM62073U■
Warning buzzer
In some cases, the buzzer may not be heard due to being in a no isy location
or audio sound.
WARNING
■ If both the ABS and the brake s ystem warning lights remain on
Stop your vehicle in a safe place immediately and contact your To y o t a
dealer. The vehicle will become extremely unstable during braki ng, 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 steerin g is
restricted. When the light comes on red, the assist to the powe r steering is
lost and handling operations of the steering wheel become extre mely
heavy. When steering wheel operations are heavier than usual, g rip the
steering wheel firmly and operate it using more force than usua l.
■
If the tire pressure warning light comes on
Handling method ( P. 4 2 3 )
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.
●Stop your vehicle in a safe place as soon as possible. Adjust t he tire
inflation pressure immediately.
●If the tire pressure warning light comes on even after tire inf lation pres-
sure adjustment, it is probable that you have a flat tire. Chec k the tires.
If a tire is flat, repair the fla t tire by using emergency tire puncture
repair kit.
●Avoid abrupt maneuvering and braking. If the vehicle tires dete riorate,
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.

4268-2. Steps to take in an emergency
MIRAI_OM_USA_OM62073U
If a warning message is displayed
Multi-information display
Master warning light
The master warning light also
comes on or flashes in order to
indicate that a message is cur-
rently being displayed on the multi-
information display.
If any of the warning messages are shown again after the following
actions have been performed, contact your Toyota dealer.
The warning lights and warning buzzers operate as follows depending
on the content of the message. If a message indicates the need for
inspection by a dealer, have the vehicle inspected by your Toyota
dealer immediately.
The multi-information display shows warnings of system mal-
functions, incorrectly performed operations, and messages that
indicate a need for maintena nce. When a message is shown,
perform the correction procedur e appropriate to the message.
Messages and warnings
System
warning light
Warning buzzer*Warning
Comes on 
Sounds Indicates an important situation,
such as when a system related to
driving is malfunctioning or that
danger may result if the correction
procedure is not performed

Comes
on or
flashes
Sounds
Indicates an important situation,
such as when the systems shown
on the multi-information display
may be malfunctioning
FlashesSounds
Indicates a situation, such as
when damage to the vehicle or
danger may result

4478-2. Steps to take in an emergency
MIRAI_OM_USA_OM62073U
8
When trouble arises
If the fuel cell system will not start
One of the following may be the cause of the problem:
● The electronic key may not be functioning properly. (P. 449)
● There may not be sufficient f uel in the vehicle’s tank.
Refuel the vehicle.
● The fuel door may be open. ( P. 2 1 6 )
● There may be a mal function in the immobilizer system.
(  P. 78)
● There may be a malfunction i n the shift control system.
* ( P. 429)
● The fuel cell system may be malf unctioning due to an electrical
problem such as electronic key battery depletion or a blown fus e.
However, depending on the type of malfunction, an interim mea-
sure is available to star t the fuel cell system. (P. 191, 448)
● The electronic key may be in battery-saving mode. ( P. 145)
*: It may not be possible to shift the shift position from P to a nother position.
One of the following may be the cause of the problem:
● The 12-volt battery may be discharged. ( P. 452)
● The 12-volt battery terminal conn ections may be loose or corroded.
(  P. 374)
Reasons for the fuel cell system not starting vary depending on
the situation. Check the followi ng and perform the appropriate
procedure:
The fuel cell system will not start even though the correct sta rt-
ing procedure is being followed. ( P. 186)
The interior lights and headlights are dim, or the horn does no t
sound or sounds at a low volume.

4488-2. Steps to take in an emergency
MIRAI_OM_USA_OM62073U
One of the following may be the cause of the problem:
● The 12-volt battery may be discharged. ( P. 452)
● One or both of the 12-volt battery terminals may be disconnecte d.
Contact your Toyota dealer if the problem cannot be repaired, o r if repair
procedures are unknown.
When the fuel cell system does not start, the following steps c an be
used as an interim measure to start the fuel cell system if the power
switch is functioning normally.
Do not use this starting procedure except in case of emergency.
Set the parking brake.
Turn the power switch to ACCESSORY mode.
Press and hold the power switch for about 15 seconds while
depressing the brake pedal firmly.
Even if the fuel cell system can be started using the above steps, the
system may be malfunctioning. Hav e the vehicle inspected by your
Toyota dealer.
The interior lights and headlights do not turn on, or the horn
does not sound.
Emergency start function
1
2
3

4548-2. Steps to take in an emergency
MIRAI_OM_USA_OM62073U
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

4709-1. Specifications
MIRAI_OM_USA_OM62073U
*: The fluid capacity is a reference quantity. If replacement is necessary, contact your Toyota dealer.
*1: Minimum pedal clearance when depressed with a force of 44.1 lb f (196 N,
20.0 kgf) while the fuel cell system is operating
*2: Parking brake pedal travel when depressed with a force of 67.5 lbf (300 N,
31.0 kgf).
Electrical system
12-volt battery
Open voltage at
68 F (20 C):12.6  12.8 V Fully charged
12.2  12.4 V Half charged
11 . 8  12.0 V Discharged
(Voltage checked 20 minutes after the fuel cell
system and all lights are turned off)
Charging rates5 A max.
Transmission
Fluid capacity*4.4 qt. (4.2 L, 3.7 Imp.qt.)
Fluid type Toyota Genuine ATF WS
NOTICE
■Transmission fluid type
Using transmission fluid other than “Toyota Genuine ATF WS” may ulti-
mately damage the transmission of your vehicle.
Brakes
Pedal clearance*12.95 in. (75 mm) Min.
Pedal free play 0.04  0.24 in. (1  6 mm)
Brake pad wear limit0.04 in. (1.0 mm)
Parking brake lining wear limit0.04 in. (1.0 mm)
Parking brake pedal travel*27  10 clicks
Fluid type SAE J1703 or FMVSS No.116 DOT 3, or
SAE J1704 or FMVSS No.116 DOT 4

4719-1. Specifications
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9
Vehicle specifications
*: Light bulbs not listed in this table are LED bulbs.
Steering
Free playLess than 1.2 in. (30 mm)
Tires and wheels
Tire sizeP215/55R17 93V
Tire inflation pressure
(Recommended cold tire
inflation pressure)
Front
36 psi (250 kPa, 2.5 kgf/cm
2 or bar)
Rear
36 psi (250 kPa, 2.5 kgf/cm2 or bar)
Wheel size 17  7 J
Wheel nut torque76 ft•lbf (103 N•m, 10.5 kgf•m)
Light bulbs*
Light bulbsBulb No.WTy p e
Interior Vanity lights
8A
Front interior/
personal lights 
8A
Rear interior light 8B
Door courtesy lights 168 5 A
Trunk light 5A
A: Wedge base bulbs (clear) B: Double end bulbs

4889-2. Customization
MIRAI_OM_USA_OM62073U■
Outside rear view mirrors (
P. 1 6 4 )
■Automatic light control system ( P. 201)
FunctionDefault
settingCustomized setting
Automatic folding/extending
operation
Linked to locking/
unlocking of the doorsOff
———OLinked to
power switch operation
Linked mirror function when
reversingOnOff———O
FunctionDefault
settingCustomized setting
Light sensor sensitivityLevel 3Level 1 to 5O——O
Time elapsed before the
headlights turn off60 seconds
Off
O——O30 seconds
90 seconds
Daytime running lights
(except for Canada)OnOffO——O