brake sensor TOYOTA MIRAI 2018 (in English) User Guide

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.

448What to do if... (Troubleshooting)
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●The seat belt reminder light is flashing
Are the driver and the front passenger wearing the seat belts? (P. 371)
●The brake system warning light is on
Is the parking brake released? ( P. 186)
Depending on the situation, other types of warning buzzer may a lso sound.
( P. 369, 376)
●Did anyone inside the vehicle open a door during setting the al arm?
The sensor detects it and the alarm sounds. ( P. 74)
To stop the alarm, turn the power switch to ON mode or start the fuel cell sys-
tem.

●Is the electronic key left inside the vehicle?
Check the message on the multi-information display. ( P. 376)
●When a warning light turns on or a warning message or indicator is dis-
played, refer to P. 369, 376.
●Stop the vehicle in a safe place and replace the flat tire with the spare
tire. ( P. 381)
●Try the procedure for when the vehicle becomes stuck in mud, di rt, or
snow. ( P. 412)
A warning buzzer sounds during driving
A warning buzzer sounds w hen leaving the vehicle
An alarm is activated and the horn sounds
A warning light turns on or a warning message or indicator
is displayed
When a problem has occurred If you have a flat tire
The vehicle becomes stuck