Toyota Mirai (2023 year). Manual in english - page 20

323

5-5. Using the driving support systems

ing

road surfaces by controlling the
brakes, fuel cell system output,
steering assist.

■

The Secondary Collision
Brake

When the SRS airbag sensor
detects a collision and the sys-
tem operates, the brakes and
brake lights are automatically
controlled to reduce the vehicle
speed and help reduce the pos-
sibility of further damage due to
a secondary collision.

■

When the TRAC/VSC/ABS sys-

tems are operating

The slip indicator light will flash

while the TRAC/VSC/ABS systems

are operating.

■

Disabling the TRAC system

If the vehicle gets stuck in mud, dirt
or snow, the TRAC system may
reduce power from the fuel cell sys-
tem to the wheels. Pressing

turn the system off may make it eas-
ier for you to rock the vehicle in
order to free it.
To turn the TRAC system off, quickly
press and release

The “Traction Control Turned OFF”
will be shown on the multi-informa-
tion display.

Press

again to turn the system

back on.

“Traction Control Turned OFF”

■

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 light will
come on and the “Traction Control
Turned OFF” will be shown on the
multi-information display.

Press

again to turn the system

back on.

: PCS will also be disabled (only

Pre-Collision warning is avail-
able). The PCS warning light will
come on and a message will be
displayed on the multi-information
display. (



P.230, 456)

■

When the message is dis-
played on the multi-information
display showing that TRAC has
been disabled even if

has

not been pressed

TRAC is temporary deactivated. If

the information continues to show,

contact your Toyota dealer.

324

5-5. Using the driving support systems

■

Operating conditions of hill-

start assist control

When the following five conditions

are met, the hill-start assist control

will operate:

●

The shift position is in a position

other than P or N (when stating off

forward/backward on an upward

incline)

●

The vehicle is stopped

●

The accelerator pedal is not

depressed

●

The parking brake is not engaged

●

Power switch is turned to ON

■

Automatic system cancelation

of hill-start assist control

The hill-start assist control will turn

off in any of the following situations:

●

Shift the shift position to P or N

●

The accelerator pedal is

depressed

●

The parking brake is engaged

●

2 seconds at maximum elapsed

after the brake pedal is released

●

Power switch is turned to OFF

■

Sounds and vibrations caused

by the ABS, brake assist, VSC,

TRAC and hill-start assist con-

trol systems

●

A sound may be heard from the

fuel cell unit compartment when

the brake pedal is depressed

repeatedly, when the fuel cell sys-

tem is started or just after the vehi-

cle begins to move. This sound

does not indicate that a malfunc-

tion has occurred in any of these

systems.

●

Any of the following conditions

may occur when the above sys-

tems are operating. 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 also

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 activated.

■

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 the

fuel cell unit compartment when

the brake pedal is operated.

●

Motor sound of the brake system

heard from the front part of the

vehicle when the driver’s door is

opened.

●

Operating sound heard from the

fuel cell unit compartment when

one or two minutes passed after

the stop of the fuel cell system.

■

Active Cornering Assist opera-

tion sounds and vibrations

When the Active Cornering Assist is

operated, operation sounds and

vibrations may be generated from

the brake system, but this is not a

malfunction.

■

EPS operation sound

When the steering wheel is oper-

ated, a motor sound (whirring

sound) may be heard. This does not

indicate a malfunction.

■

Automatic reactivation of TRAC

and VSC systems

After turning the TRAC and VSC

systems off, the systems will be

automatically re-enabled in the fol-

lowing situations:

●

When the power switch is turned

off

●

If only the TRAC system is turned

off, the TRAC will turn on when

vehicle speed increases

If both the TRAC and VSC sys-

tems are turned off, automatic re-

enabling will not occur when vehi-

cle speed increases.

325

5-5. Using the driving support systems

ing

■

Operating conditions of Active

Cornering Assist

The system operates when the fol-

lowing occurs.

●

TRAC/VSC can operate

●

The driver is attempting to accel-

erate while turning

●

The system detects that the vehi-

cle is drifting to the outer side

●

The brake pedal is released

■

Reduced effectiveness of the

EPS system

The effectiveness of the EPS sys-

tem is reduced to prevent the sys-

tem from overheating when there is

frequent steering input over an

extended period of time. The steer-

ing wheel may feel heavy as a

result. Should this occur, refrain

from excessive steering input or

stop the vehicle and turn the fuel

cell system off. The EPS system

should return to normal within 10

minutes.

■

Secondary Collision Brake

operating conditions

The system operates when the SRS

airbag sensor detects a collision

while the vehicle is in motion. How-

ever, the system does not operate in

any of the following situations.

●

When driving at a low speed

●

Components are damaged

■

Secondary Collision Brake

automatic cancelation

The system is automatically can-

celed in any of the following situa-

tions.

●

The vehicle speed has decreased

to a certain speed

●

A certain amount of time elapses

during operation

●

The accelerator pedal is

depressed a large amount

WARNING

■

The ABS does not operate

effectively when

●

The limits of tire gripping perfor-

mance have been exceeded

(such as excessively worn tires

on a snow covered road).

●

The vehicle hydroplanes while

driving at high speed on wet or

slick roads.

■

Stopping distance when the

ABS is operating may exceed

that of normal conditions

The ABS is not designed to

shorten the vehicle’s stopping dis-

tance. Always maintain a safe dis-

tance from the vehicle in front of

you, especially in the following sit-

uations:

●

When driving on dirt, gravel or

snow-covered roads

●

When driving with tire chains

●

When driving over bumps in the

road

●

When driving over roads with

potholes or uneven surfaces

■

TRAC/VSC may not operate

effectively when

Directional control and power may

not be achievable while driving on

slippery road surfaces, even if the

TRAC/VSC system is operating.

Drive the vehicle carefully in con-

ditions where stability and power

may be lost.

■

Active Cornering Assist does

not operate effectively when

●

Do not overly rely on Active

Cornering Assist. Active Corner-

ing Assist may not operate

effectively when accelerating

down slopes or driving on slip-

pery road surfaces.

326

5-5. Using the driving support systems

WARNING

●

When Active Cornering Assist

frequently operates, Active Cor-

nering Assist may temporarily

stop operating to ensure proper

operation of the brakes, TRAC

and VSC.

■

Hill-start assist control does

not operate effectively when

●

Do not overly rely on hill-start

assist control. Hill-start assist

control may not operate effec-

tively on steep inclines and

roads covered with ice.

●

Unlike the parking brake, hill-

start assist control is not

intended to hold the vehicle sta-

tionary for an extended period

of time. Do not attempt to use

hill-start assist control to hold

the vehicle on an incline, as

doing so may lead to an acci-

dent.

■

When the TRAC/ABS/VSC is

activated

The slip indicator light flashes.

Always drive carefully. Reckless

driving may cause an accident.

Exercise particular care when the

indicator light flashes.

■

When the TRAC/VSC systems

are turned off

Be especially careful and drive at

a speed appropriate to the road

conditions. As these are the sys-

tems to help ensure vehicle stabil-

ity and driving force, do not turn

the TRAC/VSC systems off

unless necessary.

■

Secondary Collision Brake

Do not rely solely upon the Sec-

ondary Collision Brake. This sys-

tem is designed to help reduce

the possibility of further damage

due to a secondary collision, how-

ever, that effect changes accord-

ing to various conditions. Overly

relying on the system may result

in death or serious injury.

■

Replacing tires

Make sure that all tires are of the

specified size, brand, tread pat-

tern and total load capacity. In

addition, make sure that the tires

are inflated to the recommended

tire inflation pressure level.
The ABS, TRAC and VSC sys-

tems will not function correctly if

different tires are installed on the

vehicle.

Contact your Toyota dealer for fur-

ther information when replacing

tires or wheels.

■

Handling of tires and the sus-

pension

Using tires with any kind of prob-

lem or modifying the suspension

will affect the driving assist sys-

tems, and may cause a system to

malfunction.

327

5-6. Driving tips

ing

5-6.Driving tips



Use washer fluid that is
appropriate to the prevailing
outside temperatures.



Have a service technician
inspect the condition of the
12-volt battery.



Have the vehicle fitted with
four snow tires or purchase a
set of tire chains for the rear
tires.

Ensure that all tires are the speci-
fied size and brand, and that chains
match the size of the tires.

Winter driving tips

Carry out the necessary
preparations and inspec-
tions before driving the
vehicle in winter. Always
drive the vehicle in a man-
ner appropriate to the pre-
vailing weather conditions.

Preparation for winter

WARNING

■

Driving with snow tires

Observe the following precautions

to reduce the risk of accidents.

Failure to do so may result in a

loss of vehicle control and cause

death or serious injury.

●

Use tires of the specified size.

●

Maintain the recommended

level of air pressure.

●

Do not drive in excess of 75

mph (120 km/h), regardless of

the type of snow tires being

used.

●

Use snow tires on all, not just

some wheels.

■

Driving with tire chains

Observe the following precautions

to reduce the risk of accidents.

Failure to do so may result in the

vehicle being unable to be driven

safely, and may cause death or

serious injury.

●

Do not drive in excess of the

speed limit specified for the tire

chains being used, or 30 mph

(50 km/h), whichever is lower.

●

Avoid driving on bumpy road

surfaces or over potholes.

●

Avoid sudden acceleration,

abrupt steering, sudden brak-

ing and shifting operations that

cause sudden regenerative

braking.

●

Slow down sufficiently before

entering a curve to ensure that

vehicle control is maintained.

●

Do not use LTA (Lane Tracing

Assist) system.

NOTICE

■

Repairing or replacing snow

tires

Request repairs or replacement of

snow tires from Toyota dealers or

legitimate tire retailers.

This is because the removal and

attachment of snow tires affects

the operation of the tire pressure

warning valves and transmitters.

328

5-6. Driving tips

Perform the following according
to the driving conditions:



Do not try to forcibly open a
window or move a wiper that
is frozen. Pour warm water
over the frozen area to melt
the ice. Wipe away the water
immediately to prevent it from
freezing.



To ensure proper operation of
the climate control system
fan, remove any snow that
has accumulated on the air
inlet vents in front of the wind-
shield.



Check for and remove any
excess ice or snow that may
have accumulated on the
exterior lights, outside rear
view mirrors, windows, vehi-
cle’s roof, chassis, around the
tires or on the brakes.



Remove any snow or mud
from the bottom of your shoes
before getting in the vehicle.

Accelerate the vehicle slowly,
keep a safe distance between
you and the vehicle ahead, and
drive at a reduced speed suit-
able to road conditions.



Turn automatic mode of the
parking brake off. Otherwise,
the parking brake may freeze
and not be able to be
released automatically.
Also, avoid using the following
as the parking brake may
operate automatically, even if
automatic mode is off.

• Brake hold system



Park the vehicle and shift the
shift position to P without set-
ting the parking brake. The
parking brake may freeze up,
preventing it from being
released. If the vehicle is
parked without setting the
parking brake, make sure to
block the wheels.
Failure to do so may be dan-
gerous because it may cause
the vehicle to move unexpect-
edly, possibly leading to an
accident.



When the parking brake is in
automatic mode, release the
parking brake after shifting
the shift position to P.
(



P.192)



If the vehicle is parked without
setting the parking brake,
confirm that the shift position
cannot be moved out of P.



If the vehicle is left parked
with the brakes damp in cold
temperatures, there is a pos-
sibility of the brakes freezing.

Before driving the vehicle

When driving the vehicle

When parking the vehicle

329

5-6. Driving tips

ing

Use the correct tire chain size
when mounting the tire chains.
Chain size is regulated for each
tire size.

Side chain (0.12 in. [3 mm] in
diameter)

Cross chain (0.16 in. [4 mm]
in diameter)

Regulations regarding the use
of tire chains vary depending on
location and type of road.
Always check local regulations
before installing chains.

■

Tire chain installation

Observe the following precautions

when installing and removing

chains:

●

Install and remove tire chains in a

safe location.

●

Install tire chains on the rear tires.

Do not install tire chains on the

front tires.

●

Install tire chains on the rear tires

as tightly as possible. Retighten

chains after driving 1/4



1/2 mile

(0.5



1.0 km).

●

Install tire chains following the

instructions provided with the tire

chains.

To enable the windshield wipers
to be lifted when heavy snow or
icy conditions are expected,
change the rest position of the
windshield wipers from the
retracted position below the
hood to the service position
using the wiper lever. (



P.208)

Selecting tire chains

Regulations on the use of
tire chains

NOTICE

■

Fitting tire chains

The tire pressure warning valves

and transmitters may not function

correctly when tire chains are fit-

ted.

Windshield wipers

331

Interior

featur

Interior features

6-1. Using the air conditioning

system and defogger

ALL AUTO control .......

332

Automatic air conditioning

system (Type A) ........

333

Automatic air conditioning

system (Type B) ........

340

Rear automatic air condi-

tioning system ...........

349

Heated steering wheel/seat

heaters/seat ventilators

..................................

351

6-2. Using the interior lights

Interior lights list ..........

355

6-3. Using the storage features

List of storage features

358

Trunk features .............

361

6-4. Using the other interior

features

Electronic sunshade....

363

Other interior features .

364

Garage door opener....

382

332

6-1. Using the air conditioning system and defogger

6-1.Using the air conditioning system and defogger

: If equipped

Touch “All auto” on the air condi-
tioning control screen.(



P.346)

The indicator on the “All auto” con-
trol screen illuminates, and the
automatic air conditioning system,
seat heaters and ventilators, and
heated steering wheel operate in
automatic mode.
If any of the system is operated
manually, the indicator turns off.
However, all other functions con-
tinue to operate in automatic mode.

■

Automatic air conditioning
system (



P.340)

The temperature can be
adjusted independently for each
seat.

■

Seat heaters (if equipped)
and seat ventilators (if
equipped) (



P.351)

Heating or ventilation is auto-
matically selected according to
the set temperature of the air
conditioning system, the out-
side temperature, etc.

■

Heated steering wheel (if
equipped) (



P.351)

Heated steering wheel operates
automatically according to the
set temperature of the air condi-
tioning system, the outside tem-
perature, etc.

■

Passenger detection functions

When a passenger is detected in

the front passenger seat, the seat

heater and ventilator will operate

automatically.

■

Seat heater (if equipped)/venti-

lator operation (if equipped)

When automatic mode is selected

using the seat heater/ventilator

switch, passenger detection is not

performed.

■

Rear seat heater operation

(vehicles with 3-ZONE climate

control)

The rear seat heaters are not con-

trolled by the ALL AUTO control.

ALL AUTO control

The seat heaters (if
equipped), seat ventilators
(if equipped) and heated
steering wheel (if equipped)
are each automatically con-
trolled according to the set
temperature of the air condi-
tioning system, the outside
and cabin temperature, etc.
ALL AUTO control allows a
comfortable condition to be
maintained without adjust-
ing each system.

Turning on ALL AUTO
control

Operation of each system

333

6-1. Using the air conditioning system and defogger

Interior

featur

Automatic mode switch

“OFF” switch

Outside/recirculated air mode

“A/C” switch

“SYNC” switch

Eco air conditioning mode switch

Right-hand side temperature control knob

Airflow mode control knob

Fan speed control knob

Left-hand side temperature control knob

Rear window and outside rear view mirror defoggers switch

Windshield defogger switch

■

Adjusting the temperature
setting

Operate the temperature con-
trol knob upwards to increase
the temperature and downwards
to decrease the temperature.

If the “A/C” switch is not pressed,
the system will blow ambient tem-
perature air or heated air.

■

Setting the fan speed

Press the fan speed increase
switch to increase the fan speed

Automatic air conditioning system (Type A)

Air outlets and fan speed are automatically adjusted accord-
ing to the temperature setting.

Air conditioning controls

334

6-1. Using the air conditioning system and defogger

and the fan speed decrease
switch to decrease the fan
speed.

Press the “OFF” switch to turn the
fan off.

■

Change the airflow mode

Press the airflow mode control
switch.

The airflow mode changes as fol-
lows each time the switch is
pressed.

Air flows to the upper body.

Air flows to the upper body
and feet.

Air flows to the feet.

Air flows to the feet and the
windshield defogger oper-
ates.

■

Switching between outside
air and recirculated air
modes

Press the outside/recirculated
air mode switch.

The mode switches between out-
side air mode and recirculated air
mode each time the switch is oper-

ated.
When recirculated air mode is
selected, the indicator illuminates
on the outside/recirculated air
mode switch.

■

Set cooling and dehumidifi-
cation function

Press the “A/C” switch.

When the function is on, the indica-
tor illuminates on the “A/C” switch.

■

Eco air conditioning mode

The air conditioning is controlled
with low fuel consumption priori-
tized such as reducing fan
speed, etc.
Press the eco air conditioning
mode switch.

When the eco air conditioning
mode is on, the indicator illumi-
nates on the eco air conditioning
mode switch.

■

Defogging the windshield

Defoggers are used to defog the
windshield and front side win-
dows.
Press the windshield defogger
switch.

Set the outside/recirculated air
mode switch to outside air mode if
the recirculated air mode is used. (It
may switch automatically.)
To defog the windshield and the
side windows quickly, turn the air
flow and temperature up.
To return to the previous mode,
press the windshield defogger
switch again when the windshield is
defogged.

335

6-1. Using the air conditioning system and defogger

Interior

featur

When the windshield defogger
switch is on, the indicator illumi-
nates on the windshield defogger
switch.

■

Defogging the rear window
and outside rear view mir-
rors

Defoggers are used to defog the
rear window and to remove rain-
drops, dew and frost from the
outside rear view mirrors.
Press the rear window and out-
side rear view mirror defoggers
switch.

The defoggers will automatically
turn off after 15 minutes.
When the rear window and outside
rear view mirror defoggers switch is
on, the indicator illuminates on the
rear window and outside rear view
mirror defoggers switch.

■

When the outside temperature

exceeds 75°F (24°C) and the air

conditioning system is on

●

In order to reduce the air condi-

tioning power consumption, the air

conditioning system may switch to

recirculated air mode automati-

cally.

This may also reduce fuel con-

sumption.

●

Recirculated air mode is selected

as a default mode when the power

switch is turned to ON.

●

It is possible to switch to outside

air mode at any time by pressing

the outside/recirculated air mode

switch.

■

Fogging up of the windows

●

The windows will easily fog up

when the humidity in the vehicle is

high. Turning the cooling and

dehumidification function on will

dehumidify the air from the outlets

and defog the windshield effec-

tively.

●

If you turn the cooling and dehu-

midification function off, the win-

dows may fog up more easily.

●

The windows may fog up if the

recirculated air mode is used.

■

When driving on dusty roads

Close all windows. If dust thrown up

by the vehicle is still drawn into the

vehicle after closing the windows, it

is recommended that the air intake

mode be set to outside air mode and

the fan speed to any setting except

off.

■

Outside/recirculated air mode

●

Setting to the recirculated air

mode temporarily is recom-

mended in preventing dirty air

from entering the vehicle interior

and helping to cool the vehicle

when the outside air temperature

is high.

●

Outside/recirculated air mode may

automatically switch depending on

the temperature setting or the

inside temperature.

■

When the outside temperature

falls to nearly 32°F (0°C)

The dehumidification function may

not operate even when “A/C” switch

is pressed.

■

Operation of the air condition-

ing system in Eco drive mode

●

In Eco drive mode, the air condi-

tioning system is controlled as fol-

lows to prioritize fuel efficiency:

• Fuel cell system and compressor

operation controlled to restrict

heating/cooling capacity

• Fan speed restricted when auto-

matic mode is selected

●

To improve air conditioning perfor-

mance, perform the following

operations:

• Adjust the fan speed

• Turn off Eco drive mode (



P.320)

• Turn off Eco air conditioning mode

336

6-1. Using the air conditioning system and defogger

●

When the driving mode is set to

Eco drive mode, the Eco air condi-

tioning mode will be turned on

automatically. Even in this case,

the Eco air conditioning mode can

be turned off by pressing the Eco

air conditioning mode switch.

■

Ventilation and air conditioning

odors

●

To let fresh air in, set the air condi-

tioning system to the outside air

mode.

●

During use, various odors from

inside and outside the vehicle may

enter into and accumulate in the

air conditioning system. This may

then cause odor to be emitted

from the vents.

●

In order to suppress odors that

occur when the air conditioning

system starts, the air flow mode

may change to blow air to the feet

or air may stop blowing for a short

period of time immediately after

the air conditioning system is

started in automatic mode.

●

When parking, the system auto-

matically switches to outside air

mode to encourage better air cir-

culation throughout the vehicle,

helping to reduce odors that occur

when starting the vehicle.

■

Air conditioning filter



P.432

■

Air conditioning system refrig-

erant

●

A label regarding the refrigerant of

the air conditioning system is

attached to the hood at the loca-

tion shown in the following illustra-

tion.

●

The meaning of each symbol on

the label are as follows:

■

Customization

Some functions can be customized.

(Customizable features:



P.523)

Caution

Air conditioning sys-
tem

Air conditioning sys-
tem lubricant type

Requires registered
technician to service
air conditioning sys-
tem

Flammable refrigerant

WARNING

■

To prevent the windshield

from fogging up

Do not use the windshield defog-

ger switch during cool air opera-

tion in extremely humid weather.

The difference between the tem-

perature of the outside air and

that of the windshield can cause

the outer surface of the wind-

shield to fog up, blocking your

vision.

337

6-1. Using the air conditioning system and defogger

Interior

featur

Press the “AUTO” switch.

Adjust the temperature set-
ting.

To stop the operation, press
the “OFF” switch.

If the fan speed setting or air
flow modes are operated, the
automatic mode indicator goes
off. However, automatic mode
for functions other than that
operated is maintained.

■

Using automatic mode

Fan speed is adjusted automati-

cally according to the temperature

setting and the ambient conditions.

Therefore, the fan may stop for a

while until warm or cool air is ready

to flow immediately after the auto-

matic mode switch is pressed.

To turn on the “SYNC” mode,
press the “SYNC” switch.

The driver’s side temperature con-
trol knob can be used to adjust the
temperature for the driver’s and
passenger’s side. To enter individ-
ual mode, operate the passenger’s
side temperature control knob or
press the “SYNC” switch again.
When the “SYNC” mode is on, the
indicator illuminates on the “SYNC”
switch.

This feature is used to prevent
ice from building up on the wind-
shield and wiper blades.
Press the switch to turn the sys-
tem on/off.

The indicator comes on when the
system is on.
The windshield wiper de-icer will
automatically turn off after approxi-
mately 15 minutes.

WARNING

■

When the outside rear view

mirror defoggers are operat-

ing

Do not touch the rear view mirror

surfaces when the outside rear

view mirror defoggers are on.

NOTICE

■

To prevent 12-volt battery dis-

charge

Do not leave the air conditioning

system on longer than necessary

when the fuel cell system is off.

■

When repairing/replacing

parts of the air conditioning

system

Have repair/replacement per-

formed by your Toyota dealer.

When a part of the air conditioning

system, such as the evaporator, is

to be replaced, it must be

replaced with a new one.

Using automatic mode

Adjusting the temperature
for driver and passenger
seats simultaneously
(“SYNC” mode)

Windshield wiper de-icer
(if equipped)

338

6-1. Using the air conditioning system and defogger

■

Location of air outlets

The air outlets and air volume
change according to the
selected air flow mode.

■

Adjusting the air flow direc-
tion and opening/closing
the air outlets



Front

Direct air flow to the left or
right, up or down

Open the vent

Close the vent



Rear

Direct air flow to the left or
right, up or down

Open the vent

Close the vent

WARNING

■

To prevent burns

Do not touch the glass at lower

part of the windshield or to the

side of the front pillars when the

windshield wiper deicer is on.

Air outlet layout and oper-
ations

339

6-1. Using the air conditioning system and defogger

Interior

featur

WARNING

■

To not interrupt the wind-

shield defogger from operat-

ing

Do not place anything on the

instrument panel which may cover

the air outlets. Otherwise, air flow

may be obstructed, preventing the

windshield defoggers from defog-

ging.

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