2020 TOYOTA MIRAI brakes

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

2955-5. Using the driving support systems
5
Driving
MIRAI_OM_USA_OM62073U
Driving assist systems
◆ECB (Electronically Controlled Brake System)
The electronically controlled system generates braking force corre-
sponding to the brake operation
◆ABS (Anti-lock Brake System)
Helps to prevent wheel lock when the brakes are applied suddenl y,
or if the brakes are applied while driving on a slippery road surface
◆Brake assist
Generates an increased level of braking force after the brake p edal
is depressed when the system de tects a panic stop situation
◆VSC (Vehicle Stability Control)
Helps the driver to control skidding when swerving suddenly or
turning on slippery road surfaces
◆Enhanced VSC (Enhanced Vehicle Stability Control)
Provides cooperative control of the ABS, TRAC, VSC and EPS.
Helps to maintain directional stability when swerving on slippe ry
road surfaces by controlling steering performance.
◆TRAC (Traction Control)
Helps to maintain drive power and prevent the drive wheels from
spinning when starting the vehicl e or accelerating on slippery roads
◆Hill-start assist control
Helps to prevent the vehicle from rolling backward when startin g on
an incline.
To help enhance driving safety and performance, the following
systems operate autom atically in response to various driving
situations. Be aware, however, that these systems are supple-
mentary and should not be relied upon too heavily when operat-
ing the vehicle.

3015-6. Driving tips
5
Driving
MIRAI_OM_USA_OM62073U
Winter driving tips
●Use washer fluid that are appropr iate to the prevailing outside tem-
peratures.
● Have a service technician inspect the condition of the 12-volt bat-
tery.
● Have the vehicle fitted with four snow tires or purchase a set of tire
chains for the front tires.
Ensure that all tires are the specified size and brand, and tha t chains
match the size of the tires.
Perform the following according to the driving conditions:
● Do not try to forcibly open a window or move a wiper that is fr ozen.
Pour warm water over the frozen area to melt the ice. Wipe away
the water immediately to p revent 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 windshield.
● Check for and remove any excess ic e or snow that may have accu-
mulated on the exterior lights, vehicle’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.
Carry out the necessary preparations and inspections before
driving the vehicle in winter. Always drive the vehicle in a ma n-
ner appropriate to the prevailing weather conditions.
Preparation for winter
Before driving the vehicle

3627-2. Maintenance
MIRAI_OM_USA_OM62073U
Vehicle interior
ItemsCheck points
Accelerator pedal
• The accelerator pedal shouldmove smoothly (without uneven
pedal effort or catching).
Transmission “Park” mechanism
• When parked on a slope and the
shift position is in P, is the vehicle
securely stopped?
Brake pedal
• Does the brake pedal movesmoothly?
• Does the brake pedal have appro-
priate clearance from the floor? (P. 470)
• Does the brake pedal have the
correct amount of free play? (P. 470)
Brakes
• The vehicle should not pull to one
side when the brakes are applied.
• The brakes should work effec-
tively.
• The brake pedal should not feel spongy.
• The brake pedal should not get too close to the floor when the
brakes are applied.
Head restraints• Do the head restraints move
smoothly and lock securely?
Indicators/buzzers• Do the indicators and buzzersfunction properly?
Lights • Do all the lights come on?
Parking brake
• Does the parking brake pedal move smoothly?
• When parked on a slope and the parking brake is on, is the vehicle
securely stopped?

3907-3. Do-it-yourself maintenance
MIRAI_OM_USA_OM62073U
Remove any dirt or foreign mat-
ter from the wheel contact sur-
face.
If foreign matter is on the wheel
contact surface, the wheel nuts
may loosen while the vehicle is in
motion, causing the tire to come
off.
WARNING
■Replacing a tire
●Observe the following precautions.
Failure to do so may result in serious injury:
Do not touch the disc wheels o r the area around the brakes imme di-
ately after the vehi cle has been driven.
After the vehicle has been driven the disc wheels and the area around
the brakes will be extremely hot . Touching these areas with han ds,
feet or other body parts while c hanging a tire, etc., may result in burns.
●Failure to follow these precautions could cause the wheel nuts to
loosen and the t ire to fall off, resulting in death or serious injury.
• Have the wheel nuts tightened with a torque wrench to 76 ft·lb f
(103 N·m, 10.5 kgf·m) as soon as possible after changing wheels.
• When installing a tire, only use wheel nuts that have been spe cifi-
cally designed for that wheel.
• If there are any cracks or defo rmations in the bolt screws, nut
threads or bolt holes of the wheel, have the vehicle inspected by
your Toyota dealer.
• When installing the wheel nuts, be sure to install the wheel n uts with
the tapered ends facing inward. ( P. 3 9 7 )
Installing the tire
1

4138-2. Steps to take in an emergency
MIRAI_OM_USA_OM62073U
8
When trouble arises
If your vehicle is transported by a
flatbed truck, it should be tied
down at the locations shown in the
illustration.
If you use chains or cables to tie
down your vehicle, the angles
shaded in black must be 45.
Do not overly tighten the tie
downs or the vehicle may be dam-
aged.
If a tow truck is not available in an emergency, your vehicle m ay be
temporarily towed using cables or chains secured to the emergen cy
towing eyelets. This should only be attempted on hard surfaced roads
for a short distance at u nder 18 mph (30 km/h).
A driver must be in the vehicle to steer and operate the brakes . The
vehicle’s wheels, drivetrain, axles, steering and brakes must b e in
good condition.
Using a flatbed truck
Front
Emergency towing

4158-2. Steps to take in an emergency
MIRAI_OM_USA_OM62073U
8
When trouble arises
■While towing
If the fuel cell system is off, the power assist for the brakes and steering will
not function, making steering and braking more difficult.
■ Wheel nut wrench
Wheel nut wrench is installed in trunk. (P. 386 434)
■ Before transporting or towing in frozen areas
Operate the water release function. Otherwise, the fuel cell sy stem may
freeze and the vehicle may not be able to be started. ( P. 190)
WARNING
Observe the following precautions.
Failure to do so may result in death or serious injury.
■When towing the vehicle
■ While towing
● When towing using cables or chains, avoid sudden starts, etc., which
place excessive stress on the towing eyelets, cables or chains. The towing
eyelets, cables or chains may become damaged, broken debris may hit
people, and cause serious damage.
● Do not turn the power switch off.
This may lead to an accident as the front wheels will be locked by the
parking lock.
■ Installing towing eyelets to the vehicle
Make sure that towing eyelets are installed securely.
If not securely installed, towing eyelets may come loose during towing.
Be sure to transport the vehicle with the
front wheels raised or with all four wheels
raised off the ground. If the vehicle is
towed with the front wheels contacting
the ground, the drivetrain and related
parts may be damaged or electricity gen-
erated by the operation of the motor may
cause a fire to occur depending on the
nature of the damage or malfunction.

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.