TOYOTA MIRAI 2022 Owners Manual

4418-2. Steps to take in an emergency
Owners Manual_USA_M62084_en
8
When trouble arises
■Hydrogen leak warning light (warning buzzer)
■Brake system warning light (warning buzzer)
■Brake system warning light (warning buzzer)
If a war ning light tur ns on or a war ning buzzer
sounds
Calmly perform the following actions if any of the warning
lights comes on or flashes. If a light comes on or flashes, but
then goes off, this does not necessarily indicate a malfunc-
tion in the system. However, if this continues to occur, have
the vehicle inspected by your Toyota dealer.
Actions to the warning lights or warning buzzers
Warning lightDetails/Actions
When a hydrogen gas leak is d etected, a buzzer sounds, a
light comes on, and a warning message is displayed on the
multi-information display.
 P. 8 8
Warning lightDetails/Actions
(U.S.A.)
or
(Red)
(Canada)
Indicates that:
 The brake fluid level is low; or
 The brake system is malfunctioning
 Immediately stop the vehicle in a safe place and con-
tact your Toyota dealer. C ontinuing to drive the vehi-
cle may be dangerous.
Indicates that the brake pads are worn out (only the right-
side pads can be detected)
 Have the vehicle inspecte d by your Toyota dealer.
Warning lightDetails/Actions
(Yellow)
Indicates a malfunction in:
The regenerative braking system;
 The electronically contr olled brake system; or
 The parking brake system
 Have the vehicle inspecte d by your Toyota dealer
immediately.

4428-2. Steps to take in an emergency
Owners Manual_USA_M62084_en
■High coolant temperature warning light*
*: This light illuminat es on the multi-information display.
■Fuel cell system overheat warning light* (warning buzzer)
*: This light illuminates on the multi-information display.
■Charging system warning light* (warning buzzer)
*: This light illuminates on the multi-information display.
■SRS warning light
Warning lightDetails/Actions
(Red)
Indicates that the coolant temperature is too high
 Immediately stop the v ehicle in a safe place.
Handling method ( P.476)
Warning lightDetails/Actions
Indicates the fuel cell system has overheated
 Stop the vehicle in a safe place.
Handling method ( P.476)
Warning lightDetails/Actions
Indicates a malfunction in t he vehicle’s charging system
 Immediately stop the vehicle in a safe place and con-
tact your Toyota dealer.
Warning lightDetails/Actions
Indicates a malfunction in:
The SRS airbag system;
 The front passenger occupant classification system; or
 The seat belt pretensioner system
 Have the vehicle inspecte d by your Toyota dealer
immediately.

4438-2. Steps to take in an emergency
Owners Manual_USA_M62084_en
8
When trouble arises
■Pop Up Hood warning light
■ABS warning light
■Electric power steering system warning light (warning
buzzer)
Warning lightDetails/Actions
Indicates that the Pop Up Hood system has operated
 The Pop Up Hood system can not be reused once it
has operated. Have it replaced by your Toyota dealer.
Indicates a malfunction in the Pop Up Hood system
 Have the vehicle inspecte d by your Toyota dealer
immediately.
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.

4448-2. Steps to take in an emergency
Owners Manual_USA_M62084_en
■PCS warning light
■LTA indicator* (warning buzzer)
*: This light illuminat es on the multi-information display.
■Intuitive parking assist OFF indicator (warning buzzer)
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.210, 451)
If the PCS (Pre-Collision Syst em) or VSC (Vehicle Stability
Control) system is disabled, the PCS warning light will illu-
minate.
 P.316
Warning lightDetails/Actions
(Orange)
Indicates a malfunction in t he LTA (Lane Tracing Assist)
 Follow the instructions dis played on the multi-infor-
mation display. ( P.233)
Warning lightDetails/Actions
(Flashes)
(If equipped)
Indicates a malfunction in the i ntuitive parking assist func-
tion
 Have the vehicle inspecte d by your Toyota dealer
immediately.
Indicates that the system is te mporarily unavailable, possi-
bly due to a sensor being dirt y or covered with ice, etc.
 Follow the instructions dis played on the multi-infor-
mation display. ( P.256)

4458-2. Steps to take in an emergency
Owners Manual_USA_M62084_en
8
When trouble arises
■PKSB OFF indicator (warning buzzer)
■RCTA OFF indicator (warning buzzer)
■RCD OFF indicator* (warning buzzer)
*: This light illuminat es on the multi-information display.
Warning lightDetails/Actions
(Flashes)
(If equipped)
When a buzzer sounds:
Indicates a malfun ction in the PKSB ( Parking Support
Brake) system
 Have the vehicle inspecte d by your Toyota dealer
immediately.
When a buzzer does not sound:
Indicates that the system is te mporarily unavailable, possi-
bly due to a sensor being dirt y or covered with ice, etc.
 Follow the instructions dis played on the multi-infor-
mation display. ( P.277)
Warning lightDetails/Actions
(Flashes)
(If equipped)
Indicates a malfunction in t he RCTA (Rear Cross Traffic
Alert) function
 Have the vehicle inspecte d by your Toyota dealer
immediately.
Indicates that the rear bumper around the radar sensor is
covered with dirt, etc. ( P.250)
 Follow the instructions dis played on the multi-infor-
mation display. ( P.264)
Warning lightDetails/Actions
(Flashes)
(If equipped)
When a buzzer sounds:
Indicates a malfunction in t he RCD (Rear Camera Detec-
tion) function
 Have the vehicle inspecte d by your Toyota dealer
immediately.
When a buzzer does not sound:
Indicates that the function te mporarily cannot be used due
to the camera being dirty, etc.
 Follow the instructions dis played on the multi-infor-
mation display. ( P.271)

4468-2. Steps to take in an emergency
Owners Manual_USA_M62084_en
■Slip indicator light
■Inappropriate pedal operation warning light* (warning buzzer)
*: This light illuminat es on the multi-information display.
■Brake hold operated indicator (warning buzzer)
Warning lightDetails/Actions
Indicates a malfunction in:
The VSC system;
 The TRAC system; or
 The hill-start assist control system
 Have the vehicle inspecte d by your Toyota dealer
immediately.
Warning lightDetails/Actions
When a buzzer sounds:
Indicates a malfunction in:
 The Brake Override System
 The Drive-Start Control
 Have the vehicle inspecte d by your Toyota dealer
immediately.
Indicates that the shift position was changed and Drive-
Start Control was operated while depressing the accelerator
pedal.
 Momentarily release the accelerator pedal.
When a buzzer does not sound:
Indicates that the accelerator and brake pedals are being
depressed simultaneously, and the Brake Override System
is operating.
 Release the accelerator pedal and depress the brake
pedal.
Warning lightDetails/Actions
(Flashes)
Indicates a malfunction in the brake hold system
 Have the vehicle inspecte d by your Toyota dealer
immediately.

4478-2. Steps to take in an emergency
Owners Manual_USA_M62084_en
8
When trouble arises
■Parking brake indicator (warning buzzer)
■Tire pressure warning light
■Low fuel level warning light*
*: This light illuminat es on the multi-information display.
Warning lightDetails/Actions
(Flashes)
(U.S.A.)
or
(Flashes)
(Canada)
Indicates a malfunction in the parking brake system
 Have the vehicle inspecte d by your Toyota dealer
immediately.
Warning lightDetails/Actions
When the light comes on after b linking for approximately 1
minute:
Malfunction in the tire pressure warning system
 Have the system checked by your Toyota dealer.
When the light comes on:
Low tire inflation pressure such as
 Natural causes
 Flat tire
 Immediately stop the v ehicle in a safe place.
Handling method ( P.449)
Warning lightDetails/Actions
Indicated the remain fuel i s approximately 12% or less
 Refuel the vehicle.

4488-2. Steps to take in an emergency
Owners Manual_USA_M62084_en
■Driver’s and front passenger’s seat belt reminder light (warn-
ing buzzer)*
*: Driver’s seat belt warning buzzer:
The driver’s seat belt warning buzzer sounds to alert the drive r that his or
her seat belt is not fastened. Onc e the power switch is turned to ON, the
buzzer sounds. If the seat belt is still unfastened, the buzzer sounds inter-
mittently for a certain period o f time after the vehicle reaches a certain
speed.
Front passenger’s seat belt warning buzzer:
The front passenger’s seat belt warning buzzer sounds to alert the front
passenger that his or her seat belt is not fastened. If the sea t belt is
unfastened, the buzzer sounds int ermittently for a certain period of time
after the vehicle reaches a certain speed.
■Rear passengers’ seat belt reminder lights*1 (warning
buzzer)*2
*1: This light illuminates on the multi-information display.
*2: Rear passengers’ seat belt warning buzzer: The rear passengers’ seat belt warning buzzer sounds to alert t he rear
passenger that his or her seat belt is not fastened. If the seat belt is
unfastened, the buzzer sounds intermittently for a certain peri od of time,
after the seat belt is fastened and unfastened and the vehicle reaches a
certain speed.
■Warning buzzer
In some cases, the buzzer may not
be heard due to being in a noisy
location or audio sound.■Front passenger detection sen-
sor, seat belt reminder and
warning buzzer
●If luggage is placed on the front
passenger seat, the front passen-
ger detection sensor may cause
the warning light to flash and the
warning buzzer to sound even if a
Warning lightDetails/Actions
Warns the driver and/or front passenger to fasten their seat
belts
 Fasten the seat belt.
If the front passenger’s seat is occupied, the front
passenger’s seat belt also needs to be fastened to
make the warning light (warning buzzer) turn off.
Warning lightDetails/Actions
Warns the rear passengers to fasten their seat belts
 Fasten the seat belt.

4498-2. Steps to take in an emergency
Owners Manual_USA_M62084_en
8
When trouble arises
passenger is not sitting in the
seat.
●If a cushion is placed on the seat,
the sensor may n ot detect a pas-
senger, and the warning light may
not operate properly.
■SRS warning light
This warning light system monitors
the airbag sensor assembly, front
impact sensors, side impact sensors
(front door), side impact sensors
(front), side impact sensors (rear),
driver’s seat position sensor,
driver’s seat belt buckle switch, front
passenger occupant classification
system (ECU and sensors), “AIR-
BAG ON” indicator light, “AIRBAG
OFF” indicator light, front passen-
ger’s seat belt buc kle switch, seat
belt pretensioners, airbags, inter-
connecting wiring and power
sources. ( P. 3 4 )
■Electric power steering system
warning light (warning buzzer)
When the 12-volt battery charge
becomes insufficien t or the voltage
temporarily drops, the electric power
steering system warning light may
come on and the warning buzzer
may sound.
■When the tire pressure warning
light comes on
Inspect the tires to check if a tire is
punctured.
If a tire is punctured: P.455
If none of the tires are punctured:
Turn the power switch off then turn it
to ON. Check if the tire pressure
warning light comes on or blinks.
If the tire pressur e warning light
blinks for approximately 1 minute
then stays on
There may be a malfunction in the
tire pressure warning system. Have
the vehicle inspected by your Toyota
dealer immediately.
If the tire pressur e warning light
comes on
1 After the temperature of the tires
has lowered sufficiently, check
the inflation pressure of each tire
and adjust them to the specified
level.
2 If the warning light does not turn
off even after several minutes
have elapsed, check that the
inflation pressure of each tire is
at the specified level and perform
initialization. ( P.407)
■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 ca se, adjusting the
tire inflation pressure will turn off the
warning ligh t (after a few minutes).
■Conditions that the tire pres-
sure warning system may not
function properly
 P.406
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 o r serious injury.

4508-2. Steps to take in an emergency
Owners Manual_USA_M62084_en
WARNING
■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 pressure 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 y ou 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.)
As an added safety feature, your
vehicle has been equipped with a
tire pressure monitoring system
(TPMS-tire pressure warning sys-
tem) that illuminates a low tire
pressure telltale (tire pressure
warning light) w hen one or more
of your tires is s ignificantly under-
inflated. Accordingly, when the
low tire pressure te lltale (tire pres-
sure warning light) illuminates,
you should stop and check your
tires as soon as possible, and
inflate them to the proper pres-
sure. Driving on a significantly
under-inflated tire causes the tire
to overheat and can lead to tire
failure. Under-inflation also
reduces fuel efficiency and tire
tread life, and may affect the vehi-
cle’s handling and stopping ability.
Please note that the TPMS (tire
pressure warning system) is not a
substitute for proper tire mainte-
nance, and it is the driver’s
responsibility to m aintain correct
tire pressure, even if under-infla-
tion has not reached the level to
trigger illumination of the TPMS
low tire pressure te lltale (tire pres-
sure warning light).