2020 TOYOTA MIRAI sensor

4198-2. Steps to take in an emergency
MIRAI_OM_USA_OM62073U
8
When trouble arises
SRS warning lightIndicates a malfunction in:
• The SRS airbag system;
• The front passenger occupant classification system; or
• The seat belt pretensioner system
 Have the vehicle inspected by your Toyota dealer
immediately.
(U.S.A.)
(Canada)
ABS warning light Indicates a malfunction in:
• The ABS; or
• The brake assist system
 Have the vehicle inspected by your Toyota dealer
immediately.
(Red/Yellow)
Electric power steering system warning light (warning
buzzer)
Indicates a malfunction in the EPS (Electric Power Steer-
ing) system
 Have the vehicle inspected by your Toyota dealer
immediately.
(Yellow)
LDA indicator (warning buzzer)
Indicates a malfunction in the LDA (Lane Departure Alert)
 Follow the instructions dis played on the multi-infor-
mation display. (
P. 247)
(Flashes)
PKSB OFF indicator (warning buzzer) When a buzzer sounds:
Indicates a malfunction in the Parking Support Brake func-
tion (for static objects)
 Have the vehicle inspected by your Toyota dealer
immediately.
When a buzzer does not sound:
Indicates that the system is temporarily unavailable, possi-
bly due to a sensor being dirty or covered with ice, etc.
 Clear the dirt, etc.
When removing and installing the 12-volt battery, the sys-
tem needs to be initialized.
 P. 283
Warning lightWarning light/Details/Actions

4238-2. Steps to take in an emergency
MIRAI_OM_USA_OM62073U
8
When trouble arises
■SRS warning light
This warning light system monitors the airbag sensor assembly, front impact
sensors, side impact sensors (front door), side impact sensors (front), side
impact sensors (rear), driver’s seat position sensor, driver’s seat belt buckle
switch, front passenger occupant classification system (ECU and sensors),
“AIR BAG ON” indicator light, “AIR BAG OFF” indicator light, fr ont passen-
ger’s seat belt buckle switch, seat belt pretensioners, airbags , interconnect-
ing wiring and power sources. ( P. 38)
■ Front passenger detection sensor, seat belt reminder and warnin g
buzzer
● If luggage is placed on the front passenger seat, the front pas senger detec-
tion sensor may cause the warning light to flash and the warnin g buzzer to
sound even if a passenger is not sitting in the seat.
● If a cushion is placed on the seat, the sensor may not detect a passenger,
and the warning light may not operate properly.
■ Electric power steering system wa rning light (warning buzzer)
When the 12-volt battery charge becomes insufficient or the vol tage tempo-
rarily drops, the electric power steering system warning light may come on
and the warning buzzer may sound.
■
When the tire pressure warning light comes on
Inspect the appearance of the ti re to check that the tire is not punctured.
If the tire is punctured: P. 432
If the tire is not punctured:
After turning the power switch t o off, turn it to ON mode again and make
sure the tire pressure warning light comes on or blinks.
The tire pressure warning light comes on
After the temperature of the tires have lowered sufficiently, c heck the
tire inflation pressure and ad just it to the specified level.
If the warning light does not go out even after several minutes , check
that the tire inflation pressu re is at the specified level.
If the warning light does not go out even after several minutes, have the
vehicle inspected by your Toyota dealer immediately.
The tire pressure warning light is blinking for 1 minute, and t hen comes
on
Malfunction in the tire pressure warning system. Have the syste m
checked by your Toyota dealer immediately.
■The tire pressure warning light may come on due to natural caus es
The tire pressure warning light may come on due to natural caus es such
as natural air leaks and tire inflation pressure changes caused by tem-
perature. In this case, adjusting the tire inflation pressure w ill turn off the
warning light (afte r a few minutes).
■Conditions that the tire pressure warning system may not functi on
properly
 P. 3 8 2
1
2

4889-2. Customization
MIRAI_OM_USA_OM62073U■
Outside rear view mirrors (
P. 1 6 4 )
■Automatic light control system ( P. 201)
FunctionDefault
settingCustomized setting
Automatic folding/extending
operation
Linked to locking/
unlocking of the doorsOff
———OLinked to
power switch operation
Linked mirror function when
reversingOnOff———O
FunctionDefault
settingCustomized setting
Light sensor sensitivityLevel 3Level 1 to 5O——O
Time elapsed before the
headlights turn off60 seconds
Off
O——O30 seconds
90 seconds
Daytime running lights
(except for Canada)OnOffO——O

4929-2. Customization
MIRAI_OM_USA_OM62073U■
RSA (Road Sign Assi
st) (if equipped) (P. 248)
■Parking Support Brake functi on (for static objects) (if
equipped) ( P. 274)
■Intuitive parking assist ( P. 265)
■Seat belt reminder (P. 421)
FunctionDefault
settingCustomized setting
Road Sign AssistOnOff—O——
RSA notification method
(excess speed)Display only
No
notification
—O——Display and buzzer
RSA notification method
(others)Display only
No
notification
—O——Display and buzzer
RSA notification level1mph/h
(2km/h)
3mph
(5km/h)
—O——5mph
(10km/h)
FunctionDefault settingCustomized setting
Parking Support Brake func-
tion (for static objects)OnOff—O——
FunctionDefault settingCustomized setting
Intuitive parking assistOnOff—O——
Detection distance of the
rear center sensorLongShort———O
Buzzer volumeLevel 2Level 1 to 3—O——
FunctionDefault settingCustomized setting
Vehicle speed linked seat
belt reminder buzzerOnOff———O

512What to do if... (Troubleshooting)
MIRAI_OM_USA_OM62073U
●The seat belt reminder light is flashing
Are the driver and the front passenger wearing the seat belts? (P. 421)
●The brake system warning light is on
Is the parking brake released? ( P. 200)
Depending on the situation, other types of warning buzzer may also sound.
( P. 418, 426)
●Did anyone inside the vehicle open a door during setting the al arm?
The sensor detects it and the alarm sounds. ( P. 81)
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. 426)
●When a warning light turns on or a warning message or indicator is dis-
played, refer to P. 418, 426.
●Stop the vehicle in a safe place and replace the flat tire with the spare
tire. ( P. 432)
●Try the procedure for when the vehicle becomes stuck in mud, di rt, or
snow. ( P. 463)
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

523Alphabetical index
MIRAI_OM_USA_OM62073U
Safety Connect .......................... 72
Seat belt reminder light........... 421
Seat belts.................................... 30Adjusting the seat belt ............ 31
Automatic Locking Retractor (ALR) .................... 32
Child restra int system
installation ............................ 56
Cleaning and maintaining the seat belt ........................ 357
Emergency Locking Retractor
(ELR) .................................... 32
How to wear your seat belt ..... 30
How your child should wear the seat belt .......................... 32
Pregnant women, proper seat belt use ......................... 33
Reminder light and buzzer .... 421
Seat belt extender................... 32
Seat belt pretensioners ........... 31
SRS warning light ................. 419
Seat heaters ............................. 316
Seat position memory ............. 153
Seating capacity ...................... 183
Seats Adjustment ............................ 151
Adjustment precautions ........ 152
Child seats/child restraint system installation . ............... 56
Cleaning................................ 356
Driving position memory ....... 153
Head restraints ..................... 158
Power easy access system .. 153
Properly sitting in the seat ...... 28
Seat heaters ......................... 316 Sensor
Automatic headlight
system .......... ...................... 203
Automatic High Beam system .......... ...................... 209
Humidity sensor .................... 314
Inside rear view mirror .......... 163
Intuitive parking assist .......... 265
Parking Support Brake function
(for static objects) ............... 265
Radar sensor ........................ 219
Rain-sensing windshield wipers ................................. 211
Service plug ............................... 91
Shift lever ................................. 193
Side airbags ............................... 37
Side marker lights ................... 201 Light switch ........................... 201
Replacing light bulbs ............ 405
Side mirrors ............................. 164 Adjusting and folding ............ 164
BSM (Blind Spot Monitor) ..... 300
Heaters ................................. 309
Side turn signal lights ............. 199 Replacing light bulbs ............ 405
Turn signal lever ................... 199
Smart key system .................... 143 Antenna location ................... 143
Entry functions .............. 132, 138
Starting the fuel cell system .......... ...................... 186
Warning message................. 426
S
*: Refer to the “NAVIGATION SYSTEM OWNER’S MANUAL”.