2020 TOYOTA MIRAI fuel

2435-5. Using the driving support systems
5
Driving
MIRAI_OM_USA_OM62073U■
Vehicle sway warning function
When the vehicle is swaying
within a lane, the warning
buzzer will sound and a mes-
sage will be disp
layed on the
multi-information display to alert
the driver.
Press the LDA switch to turn the
LDA system on.
The LDA indicator illuminates and
a message is displayed on the
multi-information display.
Press the LDA switch again to turn
the LDA system off.
When the LDA system is turned on
or off, operation of the LDA system
continues in the same condition
the next time the fuel cell system is
started.
Turning LDA system on

2765-5. Using the driving support systems
MIRAI_OM_USA_OM62073U
The Parking Support Brake funct ion (for static objects) can be
changed on the multi-in formation display (P. 117).
Press or of the meter control switches ( P. 118), select
.
Press or of the meter control switches, select and
press to select the desi red setting (on/off).
When the Parking Support
Brake function (for static
objects) is OFF (disabled), the
PKSB OFF indicator illumi-
nates.
When switched OFF (disable) and
the Parking Support Brake function
(for static objects) is suspended,
system operations do not resume
until the function is switched ON
(enable) through the settings
screen on the multi-information dis-
play. (System operation does not
resume by operating the power
switch.)
When the Parking Support Brake function (for static objects) de tects
an static obstacle with a probab ility of collision, the fuel cell system
output is restricted to restrain an increase in vehicle speed. (fuel cell
system output restri ction control: A)
Furthermore, when the accelerator pedal continues to be depress ed,
the brakes are applied to reduce the vehicle speed. (Brake Control: B)
Changing the setting for Parking Support Brake function (for
static objects)
1
2
Operation

2775-5. Using the driving support systems
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Driving
MIRAI_OM_USA_OM62073U
ON
OFF
DOWN
DOWN
UP
ON
OFF
ON
OFF
Accelerator pedal
Brake pedal
Fuel cell system output
Braking force Control starts
Collision is possible
Collision possibility extremely
high

2785-5. Using the driving support systems
MIRAI_OM_USA_OM62073U■
Operation starting conditions
When the PKSB OFF indicator is not illuminated or flashing
(
 P. 283, 419) and all of the fo llowing conditions are met, the
system operates.
Fuel cell system output restriction control
● The Parking Support Brake functi on (for static objects) is ON
(enabled).
● The vehicle speed is 10 mph (15 km/h) or less.
● There is a static obstacle in th e traveling direction of the vehicle
(6 to 13 ft. [2 to 4 m] ahead).
● The system determined that a stronger-than-normal brake opera-
tion was necessary to avoid a collision.
Brake control
● Fuel cell system output restrict ion control is being performed.
● The system determined that a n emergency brake operation was
necessary to av oid a collision.
■Operation ending conditions
In any of the following conditi ons, the system stops operating.
Fuel cell system output restriction control
● The Parking Support Brake function (for static objects) has been
turned OFF (disabled).
● The collision became a voidable with normal brake operation.
● The static object is no longer in the traveling direction of th e vehi-
cle (6 to 13 ft. [2 to 4 m] ahead).
Brake control
● The Parking Support Brake function (for static objects) has been
turned OFF (disabled).
● Approximately 2 seconds elapsed after the vehicle was stopped
by brake control.
● The brake control was depress ed after the vehicle was stopped
by brake control.
● The static obstacle is no longer in the traveling direction of the
vehicle (6 to 13 ft. [2 to 4 m] ahead).
Operation conditions

2795-5. Using the driving support systems
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Driving
MIRAI_OM_USA_OM62073U
When the fuel cell system output restriction control or brake control
operates, the buzzer sounds and a message is displayed on the m ulti-
information display to alert the driver.
Depending on the situation, output restriction control operates to either
limit acceleration or restrict output as much as possible.
Display and buzzer for fuel cell system output restriction cont rol
and brake control
ControlSituationMulti-information displayPKSB OFF indicatorBuzzer
Fuel cell sys-
tem output
restriction
control is
operating
(accelera-
tion limita-
tion control)
Acceleration
at a certain
speed or
higher is not
possible.
Not
illuminatedNo
sound
Fuel cell sys-
tem output
restriction
control is
operating
(control to
restrict out-
put as much
as possible)
A stronger-
than-normal
brake opera-
tion is neces-
sary
Not
illuminated
Short
beep
Brake control
is operatingEmergency
braking is
necessary
The vehicle
is stopped by
system oper-
ationThe vehicle
is stopped
after brake
control oper-
ation
Illuminated

2945-5. Using the driving support systems
MIRAI_OM_USA_OM62073U■
Conditions under which the Rear C ross Traffic Alert function may not
function correctly
The Rear Cross Traffic Alert function may not detect vehicles c orrectly in the
following conditions:
● During bad weather such as heavy rain, fog, snow, etc.
● When ice or mud, etc., is attached to the rear bumper
● When multiple vehicles approach continuously
● Shallow angle parking
● When a vehicle is approaching at high speed
● When parking on a steep incline, such as hills, a dip in the road, etc.
● Directly after the Blind Spot Monitor system is on
● Directly after the fuel cell system is started with the Blind S pot Monitor sys-
tem is on
● Vehicles that the sensors cannot detect
because of obstacles

2965-5. Using the driving support systems
MIRAI_OM_USA_OM62073U
◆EPS (Electric Power Steering)
Employs an electric motor to reduce the amount of effort needed to
turn the steering wheel
The slip indicator will flash while
the TRAC/VSC/ABS systems are
operating.
If the vehicle gets stuck in mud, dirt or snow, the TRAC system may
reduce power from the fuel cell system to the wheels. Pressing
to turn the system off may make it easier for you to rock the vehicle in
order to free it.
To turn the TRAC system off,
quickly press and release .
The “TRAC OFF” is displayed on
the multi-information display.
Press again to turn the sys-
tem back on.
When the TRAC/VSC/ABS systems are operating
Disabling the TRAC system

2975-5. Using the driving support systems
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Driving
MIRAI_OM_USA_OM62073U
■Turning off both TRAC and VSC systems
To turn the TRAC and VSC systems off, press and hold for more than 3
seconds while the vehicle is stopped.
The VSC OFF indicator will come on and the “TRAC OFF” is displa yed on the
multi-information display.
Press again to turn the systems back on.
Pre-collision brake assist and pre-collision braking will also be disabled. The
PCS warning light will come on and the message is shown on the multi-infor-
mation display. ( P. 237)
■ When the message is displayed on the multi-information display show-
ing that TRAC has been disab led even if has not been pressed
TRAC and hill-start assist control cannot be operated. Contact your Toyota
dealer.
■ Sounds and vibrations caused by the ABS, brake assist, VSC, TRAC and
hill-start assist control systems
Any of the following conditions may occur when the above system s are oper-
ating. None of these indicates that a malfunction has occurred.
● Vibrations may be felt through the vehicle body and steering.
● A motor sound may be heard after the vehicle comes to a stop.
● The brake pedal may pulsate slightly after the ABS is activated .
● The brake pedal may move down slightly after the ABS is activat ed.
■ ECB operating sound
ECB operating sound may be heard in the following cases, but it does not
indicate that a malfunction has occurred.
● Operating sound heard from motor compartment when the brake ped al is
operated.
● Motor sound of the brake system heard from the front part of th e vehicle
when the driver’s door is opened.
● Operating sound heard from the motor compartment when 1 or 2 mi nutes
passed after the stop of the fuel cell system.
■ EPS operation sound
When the steering wheel is operated, a motor sound (whirring so und) may be
heard. This does not indicate a malfunction.