2020 TOYOTA YARIS sensor

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YARIS_YARIS HATCHBACK_OM_OM99V59z_(U)
1-4. SRS Air Bags
WARNING
■Do not touch the components of t he supplemental restraint system
after the air bags have inflated
Touching the components of the supplemental restraint system after the air
bags have inflated is dangerous. Immediately after inflation, t hey are very
hot. You could get burned.
■ Never install any front-end equipment to your vehicle
Installation of front-end equipment, such as frontal protection bar (kangaroo
bar, bull bar, push bar, or other similar devices), snowplow, o r winches, is
dangerous. The air bag crash sensor system could be affected. T his could
cause air bags to inflate unexpectedly, or it could prevent the air bags from
inflating during an accident. Front occupants could be seriously injured.
■ Do not modify the suspension
Modifying the vehicle suspension is dangerous. If the vehicle’s height or the
suspension is modified, the vehicle will be unable to accurately detect a col-
lision or roll-over accident resulting in incorrect or unexpect ed air bag
deployment and the possibility of serious injuries.
■ To prevent false detection by t he air bag sensor system, heed t he fol-
lowing
● Do not use tires or wheels other than those specified for your To y o t a :
Use of any tire or wheel other than those specified for your To yota (P. 553)
is dangerous. Use of such wheels will prevent the vehicle’s acc ident detec-
tions system from accurately detecting a collision or roll-over accident result-
ing in incorrect or unexpected air bag deployment and the possi bility of
serious injuries.
● Do not overload your vehicle:
Overloading your vehicle is dangerous as it could prevent the a ir bag
crash sensor system from accurately detecting a collision or roll-over acci-
dent resulting in incorrect or unexpected air bag deployment an d the pos-
sibility of serious injuries. The gross axle weight rating (GAW R) and the
gross vehicle weight rating (GVWR) for your vehicle are on the Motor
Vehicle Safety Standard Label on the driver’s door frame. Do not exceed
these ratings.
● Do not drive the vehicle off-road:
Driving your Toyota off-road is dangerous because the vehicle h as not
been designed to do so. Driving the vehicle off-road could prevent the air
bag crash sensor system from accurately detecting a collision o r roll-over
accident resulting in incorrect or unexpected air bag deploymen t and the
possibility of serious injuries.

YARIS_YARIS HATCHBACK_OM_OM99V59z_(U)
711-4. SRS Air Bags
1
Essential Safety Equipment
WARNING
■Do not modify a front door or l eave any damage unrepaired. Always
have your Toyota dealer ins pect a damaged front door
Modifying a front door or leaving any damage unrepaired is dang erous.
Each front door has a side crash sensor as a component of the supplemen-
tal restraint system. If holes are drilled in a front door, a door speaker is left
removed, or a damaged door is left unrepaired, the sensor could be
adversely affected causing it to not detect the pressure of an impact cor-
rectly during a side collision. If a sensor does not detect a s ide impact cor-
rectly, the side and curtain air bags and the front seat belt pretensioner may
not operate normally which could result in serious injury to oc cupants.
■ Do not modify the supplemental restraint system
Modifying the components or wiring of the supplemental restrain t system is
dangerous. You could accidentally activate it or make it inoper able. Do not
make any modifications to the supplemental restraint system. Th is includes
installing trim, badges, or anything else over the air bag modu les. It also
includes installing extra electrical equipment on or near syste m components
or wiring. Your Toyota dealer can provide the special care need ed in the
removal and installation of front seats. It is important to protect the air bag
wiring and connections to assure that the bags do not accidenta lly deploy,
and that the front passenger occupant classification system and the seats
retain an undamaged air bag connection.
■ Do not place luggage or other objects under the front seats
Placing luggage or other objects under the front seats is dange rous. The
components essential to the supplemental restraint system could be dam-
aged, and in the event of a side collision, the appropriate air bags may not
deploy, which could result in death or serious injury. To preve nt damage to
the components essential to the supplemental restraint system, do not
place luggage or other objects under the front seats.
■ Do not operate a vehicle with damaged air bag/seat belt pretens ioner
system components
Expended or damaged air bag/seat belt pretensioner system components
must be replaced after any collision which caused them to deplo y or dam-
age them. Only a trained Authorized Toyota Dealer can fully eva luate these
systems to see that they will work in any subsequent accident. Driving with
an expended or damaged air bag or pretensioner unit will not afford you the
necessary protection in the event of any subsequent accident wh ich could
result in serious injury or death.

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YARIS_YARIS HATCHBACK_OM_OM99V59z_(U)
1-4. SRS Air Bags
WARNING
■Do not remove interior air bag parts
Removing any components such as the front seats, front dashboar d, the
steering wheel or parts on the front and rear window pillars an d along the
roof edge, containing air bag parts or sensors is dangerous. Th ese parts
contain essential air bag components. The air bag could accidentally acti-
vate and cause serious injuries. Always have your Toyota dealer remove
these parts.
■ Properly dispose of the air bag system
Improper disposal of an air bag or a vehicle with live air bags in it can be
extremely dangerous. Unless all safety procedures are followed, injury
could result. Have your Toyota dealer safely dispose of the air bag system
or scrap an air bag equipped vehicle.

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YARIS_YARIS HATCHBACK_OM_OM99V59z_(U)
1-4. SRS Air Bags
1
Essential Safety Equipment
Supplemental Restraint System Compo-
nents
Side and curtain inflators and air bags
Side crash sensors
Driver/Front passenger inflators and air bags
Air bag/seat belt pretensi oner system warning light ( P. 173)
Roll-over sensor, crash sensors, and diagnostic module (SAS uni t)
Front passenger air bag deac tivation indicator light (P. 8 3 )
Front air bag sensors
Seat belt pretensioners ( P. 3 9 )
Front passenger occupant c lassification sensor (P. 8 2 )
Front passenger occupant classification module1
2
3
4
5
6
7
8
9
10

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YARIS_YARIS HATCHBACK_OM_OM99V59z_(U)
1-4. SRS Air Bags
How the SRS Air Bags Work
◆Front Seat Belt Pretensioners
The front seat belt pretensioners are designed to deploy in moder-
ate or severe frontal, near frontal collisions.
In addition, the pretensioners o perate when a side collision or a roll-
over accident is detected. The p retensioners operate differently
depending on what types of air bags are equipped. For more deta ils
about the seat belt pretensioner operation, refer to the SRS Ai r Bag
Deployment Criteria ( P. 7 8 ) .
◆Driver Air Bag
The driver’s air bag is mounted in the steering wheel.
When air bag crash sensors
detect a frontal impact of
greater than moderate force,
the driver’s air bag inflates
quickly helping to reduce injury
mainly to the driver’s head or
chest caused by directly hitting
the steering wheel.
For more details about air bag deployment, refer to “SRS Air Ba g
Deployment Criteria” ( P. 7 8 ) .
The driver’s dual-stage air bag controls air bag inflation in t wo
energy stages. During an impact of moderate severity, the driver’s
air bag deploys with lesser energy, whereas during more severe
impacts, it deploys with more energy.
Your Toyota is equipped with the following types of SRS air
bags. SRS air bags are designed to work together with the seat
belts to help to reduce injuries during an accident. The SRS ai r
bags are designed to provide further protection for passengers
in addition to the seat belt functions. Be sure to wear seat be lts
properly.

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751-4. SRS Air Bags
1
Essential Safety Equipment
◆Front Passenger Air Bag
The front passenger air bag is mounted in the front passenger
dashboard.
The inflation mechanism for the
front passenger air bag is the
same as the driver’s air bag, as
mentioned above.
For more details about air bag
deployment, refer to “SRS Air
Bag Deployment Criteria”
(  P. 78).
In addition, the front passenger air bag is designed to only de ploy in
accordance with the total seated weight on the front passenger
seat. For details, refer to the front passenger occupant classi fica-
tion system ( P. 8 2 ) .
◆Side Air Bags
The side air bags are mounted in the outboard sides of the fron t
seatbacks.
When the air bag crash sensors
detect a side impact of greater
than moderate force, the sys-
tem inflates the side air bag
only on the side in which the
vehicle was hit. The side air
bag inflates quickly to reduce
injury to the driver or front pas-
senger’s chest caused by
directly hitting interior parts
such as a door or window.
For more details about air bag deployment, refer to “SRS Air Ba g
Deployment Criteria” ( P. 7 8 ) .
In addition, the front passenger side air bag is designed to on ly
deploy when the front passenger occupant classification sensor
detects a passenger sitting on the front passenger’s seat. For
details, refer to the front pas senger occupant classification s ystem
(  P. 82).

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1-4. SRS Air Bags
◆Curtain Air Bags
The curtain air bags are mounted in the front and rear window pil-
lars, and the roof edge along both sides.
When the air bag crash sensors detect a side impact of greater
than moderate force, the curtain air bag inflates quickly and h elps to
reduce injury mainly to the rear outboard passenger’s head caus ed
by directly hitting interior p arts such as a door or window.
For more details about air bag deployment, refer to “SRS Air Ba g
Deployment Criteria” ( P. 7 8 ) .
In a side impact
Greater than moderate impact to one side of the vehicle will ca use
the curtain air bag on that side only to inflate.
Only one side curtain air bag
will deploy on the side of the
vehicle that receives the force
of an impact.
In a roll-over
In response to a vehicle roll-over , both curtain air bags inflate.
Both curtain air bags will deploy
after the roll-over accident is
detected.

YARIS_YARIS HATCHBACK_OM_OM99V59z_(U)
791-4. SRS Air Bags
1
Essential Safety Equipment
X: The SRS air bag equipment is designed to deploy in a collision.
*1:The front passenger front and side air bags and the seat belt pretensioner
are designed to deploy when the front passenger occupant classi fication
sensor detects a passenger sitting on the front passenger’s sea t.
*2:In a side collision, the seat belt pretensioners and the side/curtain air bags
deploy.
*3:In a roll-over accident, the seat belt pretensioners and the cu rtain air bags
deploy.
In a frontal offset collision, the equipped air bags and preten sioners may all
deploy depending on the direction, angle, and rate of impact.