2020 TOYOTA 86 sensor

104 1-7. Safety information
The SRS airbag can function only when the engine switch is in the “ON”
position (vehicles without a smart key system) or when the “ENGINE START
STOP” switch is in IGNITION ON mode (vehicles with a smart key system).
The Toyota advanced frontal airbag system is designed to determ ine the
activation or deactivation condition of the front passenger’s S RS frontal air-
bag depending on the characteristic of the item(s) or person on the front
passenger’s seat monitored by the front passenger’s occupant cl assification
system sensor. For this reason, only the driver’s SRS frontal a irbag may
deploy in the event of a collision, but this does not mean fail ure of the sys-
tem.
If the front sub sensors and the impact sensors in the airbag c ontrol module
detect a predetermined amount of force during a frontal collisi on, the control
module sends signals to the airbag module(s) (only driver’s mod ule or both
driver’s and front passenger’s modules) instructing the module( s) to inflate
the SRS frontal airbag(s).
The driver’s and front passenger’s SRS frontal airbags use dual stage infla-
tors. The two inflators of each airbag are triggered either seq uentially or
simultaneously, depending on the severity of impact, in the cas e of the
driver’s SRS frontal airbag and depending on the severity of im pact and the
characteristic of the item(s) or person on the seat in the case of the front
passenger’s SRS frontal airbag.
After deployment, the SRS airbag immediately starts to deflate so that the
driver’s vision is not obstructed. The time required from detec ting impact to
the deflation of the SRS airbag after deployment is shorter tha n the blink of
an eye.
Both when only the driver’s SRS frontal airbag deploys and the driver’s and
front passenger’s SRS frontal airbags deploy, the driver’s and front passen-
ger’s seat belt pretensioners operate at the same time.
Although it is highly unlikely that the SRS airbag would activa te in a non-
accident situation, should it occur, the SRS airbag will deflat e quickly, not
obscuring vision and will not interfere with the driver's abili ty to maintain con-
trol of the vehicle.
When the SRS airbag deploys, a sudden, fairly loud inflation no ise will be
heard and some smoke will be released. These occurrences are a normal
result of the deployment. This smoke does not indicate a fire i n the vehicle.

111
1-7. Safety information
1
Before driving
■
Operation
The SRS side airbag and SRS curtain shield airbag can function only when
the engine switch is in the “ON” position (vehicles without a s mart key sys-
tem) or when the “ENGINE START ST OP” switch is in IGNITION ON mode
(vehicles with a smart key system).
The driver’s and front passenger’s SRS side airbags and SRS cur tain shield
airbags deploy independently of each other since each has its o wn impact
sensor. Therefore, they may not both deploy in the same acciden t. Also, the
SRS side airbag and SRS curtain shield airbag deploys independe ntly of the
driver’s and front passenger’s SRS front airbags in the steerin g wheel and
instrument panel.
A rollover sensor is also located inside the airbag control mod ule.
An impact sensor, which senses impact force, is located in each of the left
and right center pillars, doors and rear wheel houses. Another impact sen-
sor, which also senses impact force, is located under the center of the rear
seats.
If the impact sensor that is located under the center of the re ar seats and
one of the center pillar impact sensors or door impact sensors together
sense an impact force above a predetermined level in a side col lision, the
control module causes both the SRS side airbag and curtain shield airbag on
the impacted side to inflate regardless of whether the rear whe el house
impact sensor on the same side senses an impact.
If the impact sensor that is located under the center of the re ar seats and
one of the rear wheel house impact sensors together sense an im pact force
above a predetermined level, the control module causes only the SRS cur-
tain shield airbag on the impacted side to inflate.
If the rollover sensor detects rollover of the vehicle, the control module
inflates the SRS curtain shield airbags. At this time, the driver's and front
passenger’s seat belt pretensioners also operate at the same ti me.

125
1-7. Safety information
1
Before driving
SRS airbag system monitors
A diagnostic system continually
monitors the readiness of the
SRS airbag system (including
front seat belt pretensioners)
while the vehicle is being driven.
The SRS warning light will show
normal system operation by illu-
minating for approximately 6
seconds when the engine switch
is turned to the “ON” position
(vehicles without a smart key
system), or the “ENGINE START
STOP” switch is turned to IGNI-
TION ON mode (vehicles with a
smart key system).
The following components are mo nitored by the indicator:
● Front sub sensor (right-hand side)
● Front sub sensor (left-hand side)
● Airbag control module (including impact sensors and rollover se n-
sors)
● Frontal airbag modu le (driver’s side)
● Frontal airbag module ( front passenger’s side)
● Side airbag sensor (center pillar right-hand side)
● Side airbag sensor (center pillar left-hand side)
● Door impact sensor (right-hand side)
● Door impact sensor (left-hand side)
● Side airbag module (driver’s side)
Vehicles with a monochrome multi-
information display
Vehicles with a color multi-information
display

126 1-7. Safety information
●Side airbag module (fro nt passenger’s side)
● Curtain shield airbag sensor (re ar wheel house right-hand side)
● Curtain shield airbag sensor (re ar wheel house left-hand side)
● Curtain shield airbag module (right-hand side)
● Curtain shield airbag module (left-hand side)
● Satellite safing sensor (under the center of the rear seats)
● Seat belt pretensi oner (driver’s side)
● Seat belt pretensioner (front passenger’s side)
● Seat belt buckle switch (front passenger’s side)
● Front passenger’s occupant cla ssification system sensor
● Front passenger’s occupan t detection control module
● Front passenger’s frontal air bag ON and OFF indicator
● All related wiring

128
1-7. Safety information
Front passenger occupant classification system
Your vehicle is equipped with a front passenger occupant classifica-
tion system. Using the sensors installed under the seat cover, the
system detects the conditions of the front passenger seat and acti-
vates or deactivates the frontal airbag for front passenger seat. The
occupant classification system m ay not inflate the front passenger’s
SRS frontal airbag even when the driver’s SRS frontal airbag
deploys. This is not a malfuncti on. If the seat belt buckle switch and/
or front passenger’s occupant classification system have failed, the
SRS warning light will illuminate. Have the system inspected by your
Toyota dealer immediately if the SRS warning light illuminates.
If your vehicle has sustained im pact, this may affect the proper func-
tion of the Toyota advanced frontal airbag system. Immediately con-
tact your Toyota dealer and have your vehicle inspected. Do not use
the front passenger seat while driving to your Toyota dealer.
SRS warning light
Front passenger’s seat belt reminder light
“AIR BAG OFF” indicator light
“AIR BAG ON” indicator light

225
2-3. Operating the light
s and windshield wipers
2
When driving
■Headlight control sensor
■ Automatic light off system
Vehicles without a smart key system
The light switch is in , the headlights and tail lights turn of f 30 sec-
onds after a door is opened and closed if the engine switch is turned off.
(The lights turn off immediately if on the key is pressed after all the
doors are locked.)
To turn the lights on again, turn the engine switch to “ON” position, or turn
the light switch off and then back to
or .
Vehicles with a smart key system
The light switch is in , the headlights and tail lights turn of f 30 sec-
onds after a door is opened and closed if the “ENGINE START STO P”
switch is turned off. (The lights turn off immediately if on t he key is
pressed after all the doors are locked.)
To turn the lights on again, turn the “ENGINE START STOP” switc h to IGNI-
TION ON mode, or turn the light switch off and then back to
or
.
Headlight control sensor is located on the
passenger's side.
The sensor may not function properly if
an object is placed on the sensor, or any-
thing that blocks the sensor is affixed to
the windshield.
Doing so interferes with the sensor
detecting the level of ambient light and
may cause the automatic headlight sys-
tem to malfunction.

226 2-3. Operating the lights and windshield wipers
■Light reminder buzzer
Vehicles without a smart key system
A buzzer sounds when the engine switch is turned to “LOCK” position and
the driver's door is opened with the key removed from the engin e switch
while the lights are turned on.
Vehicles with a smart key system
A buzzer sounds when the lights are left on with the “ENGINE ST ART
STOP” switch off and the driver’s door is opened.
■ Automatic headlight leveling system
The level of the headlights is automatically adjusted according to the number
of passengers and the loading condition of the vehicle to ensure that the
headlights do not interfere with other road users.
■ Battery-saving function
In the following conditions, the headlights and the other remai ning lights will
go off automatically after 20 minutes in order to prevent the vehicle battery
from being discharged:
● The headlights and/or tail lights are on.
● The key is removed from the engine switch (vehicles without a s mart key
system) or the “ENGINE START STOP” switch is turned off (vehicl es with
a smart key system).
● The light switch is in or .
This function will be canceled in any of the following situations:
● When the engine switch is turned to the “ON” position (vehicles without a
smart key system) or the “ENGINE START STOP” switch is turned t o
IGNITION ON mode (vehicles with a smart key system).
● When the light switch is turned off.
● When the door is opened or closed.
■ Customization that can be conf igured at your Toyota dealer
Settings of the light sensor sensitivity can be changed.
(Customizable features P. 487)

5
When trouble arises
403
5-2. Steps to take in an emergency
■
Front passenger detection sens or and passenger seat belt remind er
and warning buzzer
● If luggage is placed on the front passenger seat, the front passenger
detection sensor may cause the warning light to flash and warni ng
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 passen-
ger, and the warning light may not operate properly.
■
When the tire pressure warning light comes on
Check the tire inflation pressure and adjust to the appropriate level.
■The tire pressure warning light may turn on due to natural causes
The tire pressure warning light may turn on due to natural caus es such
as natural air leaks or 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).
■When a tire is repla ced with a spare tire
The compact spare tire is not equipped with a tire pressure war ning
valve and transmitter. If a tire goes flat, the tire pressure w arning light will
not turn off even though the flat tire has been replaced with t he spare
tire. Replace the spare tire with the repaired tire and adjust the tire infla-
tion pressure. The tire pressure warning light will go off afte r a few min-
utes.