sensor TOYOTA MIRAI 2018 (in English) Service Manual

2415-5. Using the driving support systems
5
Driving
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Automatic cancelation of the pre-collision system
When a malfunction occurs due to sensor contamination, etc., that results in
the sensors being unable to detect obstacles, the pre-collision system will be
automatically disabled. In this case, the system will not activate even if there
is a collision possibility.
■ When there is a malfunction in the system, or if the system is temporar-
ily unavailable
The PCS warning light flashes and a warning message is shown on the multi-
information display. If a warning message is shown on the multi -information
display, read the message and follow the instructions.
■ When the TRAC and VSC are turned off
● When the TRAC and VSC operations are turned off ( P. 233), the pre-colli-
sion brake assist and pre-collision braking are also turned off . However, the
alert function operates.
● The PCS warning light turns on and the “Pre-Collision Brake is Disabled due
to VSC OFF” is displayed on the multi-information display.
■ Certification for the radar sensor
FCC ID: HYQDNMWR007
This device complies with part 15 of the FCC Rules. Operation is subject to
the following two conditions: (1) This device may not cause har mful interfer-
ence, and (2) this device must accept any interference received, including
interference that may cause undesired operation.
FCC WARNING
Changes or modifications not expressly approved by the party re sponsible for
compliance could void the user’s authority to operate the equip ment.
Radiofrequency radiation exposure Information:
This equipment complies with FCC radiation exposure limits set forth for an
uncontrolled environment.
This equipment should be installed and operated with minimum distance of
20 cm between the radiator (antenna) and your body. This transm itter must
not be co-located or operating in conjunction with any other antenna or trans-
mitter.

2425-5. Using the driving support systems
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WARNING
■Limitations of the pre-collision system
The driver is solely responsible for safe driving. Always drive safely, taking
care to observe your surroundings.
Do not use the pre-collision system instead of normal braking o perations
under any circumstances. This system will not prevent collision s or lessen
damage or injuries in all cases. Do not overly rely on this sys tem. Failure to
do so may cause an accident, resulting in death or serious inju ry.
This system has been designed to help avoid and reduce the impa ct of col-
lisions.
However, the system operates differently depending on the situa tion
(  P. 239).
As a result, the same level of performance may not be expected in all
cases. Also, the pre-collision brakes may not operate if the driver is
depressing the brake pedal or turning the steering wheel, as th e system will
determine such conditions as collision avoidance operations.
■ Handling the radar sensor
Observe the following to ensure the pre-collision system can function effec-
tively.
Otherwise, the system may not function correctly and could result in an
accident.
● Keep the sensor and grille cover clean at all times.
Clean the sensor and grille cover with a soft cloth so you do n ot mark or
damage them.
● Do not subject the sensor or surrounding area to a strong impac t.
If the sensor moves even slightly off position, the system may not work
normally or malfunction. If the sensor or surrounding area is s ubject to a
strong impact, always have the area inspected and adjusted by y our
Toyota dealer.
● Do not disassemble the sensor.
● Do not attach accessories or stickers to the sensor, grille cover or sur-
rounding area.
● Do not modify or paint the sensor and grille cover.
● If the radar sensor needs to be replaced, contact your Toyota dealer.

2445-5. Using the driving support systems
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BSM (Blind Spot Monitor)
The Blind Spot Monitor is a system that has 2 functions;
● The Blind Spot Monitor function
Assists the driver in making t he decision when changing lanes
● The Rear Cross Traffic Alert function
Assists the driver when backing up
These functions use same sensors.
Summary of the Blind Spot Monitor
BSM outside rear view mirror indicators
Blind Spot Monitor function:
When a vehicle is detected in the blind spot, the BSM outside r ear view
mirror indicator on the detected side illuminates. If the turn signal lever is
operated when a vehicle is in the blind spot, the BSM outside r ear view
mirror indicator flashes.
Rear Cross Traffic Alert function:
When a vehicle approaching from the right or left rear of the v ehicle is
detected, the BSM outside rear view mirror indicators flash.
Rear Cross Traffic Alert buzzer (Rear Cross Traffic Alert funct ion
only)
When a vehicle approaching from the right or left rear of the v ehicle is
detected, a buzzer sounds from behind the rear seat.

2455-5. Using the driving support systems
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Driving
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ON (activate)/OFF (deactivate) can be changed by the [set-
tings display] for the Mult i-information Display (P. 1 0 7 )
Press either or on the
meter control switches ( P. 108)
and select
Each press of of the meter control switches, changes ON and
OFF. When ON is selected, t he BSM indicator turns on.
■The BSM outside rear view mi rror indicators visibility
When under strong sunlight, the BSM outside rear view mirror in dicator may
be difficult to see.
■ Rear Cross Traffic Alert buzzer hearing
Rear Cross Traffic Alert function may be difficult to hear over loud noises
such as high audio volume.
■ When “Blind Spot Monitor Unavaila ble” is displayed on the multi-infor-
mation display
Water, snow, mud, etc., may be built up in the vicinity of the sensor area of
bumper.( P. 246) Removing the water, snow, mud, etc., from the vicinity of
the sensor area bumper should return it to normal. Also, the se nsor may not
function normally when used in extremely hot or cold weather.
■ When “Blind Spot Monitor System M alfunction Visit Your Dealer” is dis-
played on the multi-information display
There may be a sensor malfunction or voltage abnormality. Have the vehicle
inspected at your Toyota dealer.
Turning the Blind S pot Monitor system on

2465-5. Using the driving support systems
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Certification for the Blind Spot Monitor system
FCC ID: OAYSRR2A
This device complies with part 15 of the FCC Rules. Operation is subject to
the following two conditions:
(1) This device may not cause harmful interference, and
(2) this device must accept any interference received, including interference
that may cause undesired operation.
FCC Warning
Changes or modifications not expressly approved by the party re sponsible for
compliance could void the user’s authority to operate the equip ment.
The Blind Spot Monitor function uses radar sensors to detect ve hicles
that are traveling in an adjacent lane in the area that is not reflected in
the outside rear view mirror (the blind spot), and advises the driver of
the vehicles existence via the B SM outside rear view mirror indicator.
WARNING
■Handling the radar sensor
One Blind Spot Monitor sensor is installed inside the left and right side of
the vehicle rear bumper respectively. Observe the following to ensure the
Blind Spot Monitor system can function correctly.
● Do not subject the sensor or surrounding area on the bumper to a strong
impact. If the sensor moves even slightly off position, the sys tem may mal-
function and vehicles that enter the detection area may not be detected. If
the sensor or surrounding area is subject to a strong impact, a lways have
the area inspected by your Toyota dealer.
● Do not disassemble the sensor.
● Do not attach accessories or stickers to the sensor or surround ing area on
the bumper.
● Do not modify the sensor or surrounding area on the bumper.
● Do not paint the rear bumper any color other than an official Toyota color.
The Blind Spot Monitor function
●Keep the sensor and its surrounding
area on the bumper clean at all times.

2495-5. Using the driving support systems
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Driving
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The Rear Cross Traffic Alert function operates when your vehicle is in
reverse. It can detect other vehicles approaching from the right or left
rear of the vehicle. It uses radar sensors to alert the driver of the other
vehicle’s existence through flas hing the BSM outside rear view mirror
indicators and s ounding a buzzer.
The Rear Cross Tra ffic Alert function
Approaching vehicles Detection areas
WARNING
■Cautions regarding the use of the system
The driver is solely responsible for safe driving. Always drive safely, taking
care to observe your surroundings.
The Rear Cross Traffic Alert function is only an assist and is not a replace-
ment for careful driving. Driver must be careful when backing u p, even
when using Rear Cross Traffic Al ert function. The driver’s own visual confir-
mation of behind you and your vehicle is necessary and be sure there are
no pedestrians, other vehicles, etc., before backing up. Failure to do so
could cause death or serious injury.
According to conditions, the system may not function correctly. Therefore
the driver’s own visual confirmation of safety is necessary.

2515-5. Using the driving support systems
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Driving
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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

2566-1. Using the air conditioning system and defogger
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Automatic air conditioning system
■Adjusting the temperature setting
To adjust the temperature set-
ting, touch and slide your finger
up or down on the sensor.
The temperature setting can
also be adjusted by touching on
the sensor.
When the temperature setting is
changed, a buzzer sounds.
If the indicator is turned
off, the system will blow ambient
temperature air or heated air.
The temperature for the driver’s and front passenger’s can be
adjusted separately when:
• The front passenger’s side tem perature setting is touched.
• The air conditioning system switches between individual and synchronized modes each time is touched.
Air outlets and fan speed are automatically adjusted according
to the temperature setting.
Air conditioning controls

2616-1. Using the air conditioning system and defogger
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Interior features
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Fogging up of the windows
●The windows will easily fog up when the humidity in the vehicle is high.
Turning on will dehumidify the air from the outlets and defog the wind-
shield effectively.
● If you turn off, the windows may fog up more easily.
● The windows may fog up if the recirculated air mode is used.
■ Windshield fog detection function
When automatic mode is set, the humidity sensor ( P. 264) detects fog on
the windshield and controls the air conditioning system to prev ent fog.
■ Outside/recirculated air mode
●When driving on dusty roads such as tunnels or in heavy traffic, set the out-
side/recirculated air mode button to recirculated air mode. Thi s is effective in
preventing outside air from entering the vehicle interior. Duri ng cooling oper-
ation, setting the recirculated air mode will also cool the vehicle interior
effectively.
● Outside/recirculated air mode may automatically switch dependin g on the
temperature setting or the inside temperature.
■ Operation of the air conditioni ng system in ECO HEAT/COOL mode
● In ECO HEAT/COOL mode, the air conditioning system is controlle d as fol-
lows to prioritize fuel efficiency:
• Fluid (heating) heater and compressor operation controlled to restrict
heating/cooling capacity
• Fan speed restricted when automatic mode is selected
● To improve air conditioning performance, perform the following operations:
• Adjust the temperature settings and fan speed
• Touch while in , and is set
• Touch while in , and ECO HEAT/COOL mode is canceled
■ Operation of the air conditioning system in Eco drive mode
When ECO MODE switch is pressed, operations switch over to ECO HEAT/
COOL mode. ( P. 183)
■ When the outside temperature exceeds 75°F (24°C) and the air co ndition-
ing system is on
● In order to reduce the air conditioning power consumption, the air condition-
ing system may switch to recirculated air mode automatically. This may also
reduce fuel consumption.
● Recirculated air mode is selected as a default mode when the power switch
is turned to ON mode.
● It is possible to switch to outside air mode at any time by pre ssing .

2646-1. Using the air conditioning system and defogger
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WARNING
■To prevent the windshield from fogging up
● Do not use during cool air operation in extremely humid weathe r.
The difference between the temperature of the outside air and t hat of the
windshield can cause the outer surface of the windshield to fog up, block-
ing your vision.
■ To prevent burns
● Do not touch the rear view mirror surfaces when the outside rear view mir-
ror defoggers are on.
● Do not touch the glass at lower part of the windshield or to the side of the
front pillars when the windshield wiper de-icer is on.
NOTICE
■Humidity sensor
■ To prevent 12-volt b attery discharge
Do not leave the air conditioning system on longer than necessa ry when the
fuel cell system is off.
● 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 defogging.
In order to detect fog on the windshield, a
sensor which monitors the temperature
of the windshield, the surround humidity,
etc., is installed. ( P. 261)
Follow these points to avoid damaging
the sensor:
● Do not disassemble the sensor
● Do not spray the glass cleaner on the
sensor or subject it to strong impacts
● Do not stick anything on the sensor