srs TOYOTA YARIS 2020 (in English) Owner's Manual
[x] Cancel search | Manufacturer: TOYOTA, Model Year: 2020, Model line: YARIS, Model: TOYOTA YARIS 2020Pages: 572, PDF Size: 7.94 MB
Page 78 of 572

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YARIS_YARIS HATCHBACK_OM_OM99V59z_(U)
1-4. SRS Air Bags
SRS Air Bag Deployment Criteria
This  chart  indicates  the  applicable  SRS  equipment  that  will  dep loy
depending on the type of collision.
(The illustrations are the repres entative cases of collisions.)
SRS 
equipment
Types of collision
A severe frontal/near 
frontal collisionA severe 
side colli- sion
*2
A roll-over/near roll- over
*3
A rear colli-
sion
Front seat belt pre-
tensioner
X*1X*1X*1
No air bag  and front seat belt 
preten-
sioner will 
be activated 
in a rear 
collision.Driver air  bagX
Front pas-senger air  bag
X*1
Side air bagX*1 (impact 
side only)
Curtain air  bagX (impact 
side only)X (both  sides) 
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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. 
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YARIS_YARIS HATCHBACK_OM_OM99V59z_(U)
1-4. SRS Air Bags
Limitations to SRS Air Bag
The  following  illustrations  are  examples  of  front/near  front  collisions
that may not be detected as severe enough to deploy the SRS air bag
equipment.
Impacts involvi ng trees or poles
Frontal offset impact to the vehicle
Rear-ending  or  running  under  a
truck’s tail gate
In severe collisions such as those described previously in “SRS
Air Bag Deployment Criteria”, th e applicable SRS air bag equip-
ment  will  deploy.  However,  in  some  accidents,  the  equipment
may not deploy depending on the t ype of collision and its sever -
ity.
Limitations to front/near fr ont collision detection
IN14ZZ009 
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YARIS_YARIS HATCHBACK_OM_OM99V59z_(U)
811-4. SRS Air Bags
1
Essential Safety Equipment
The following illustrations are examples of side collisions that may not
be detected as severe enough to  deploy the SRS air bag equipmen t.
Side  impacts  involving  trees  or
poles
Side  impacts  with  two-wheeled
vehicles
The following illustration is an example  of an accident that may not be
detected as a roll-over accident. Therefore, the front seat bel t preten-
sioners and curtain air bags may not deploy.
Pitch end over end
Limitations to side c ollision detection
Limitations to roll-over detection 
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YARIS_YARIS HATCHBACK_OM_OM99V59z_(U)
1-4. SRS Air Bags
Front Passenger Occupant Classification 
System
Your  vehicle  is  equipped  with  a  f ront  passenger  occupant  classifica-
tion  sensor  as  a  part  of  the  supplemental  restraint  system. Thi s  sen-
sor  is  equipped  in  the  front  pas senger’s  seat  cushion.  This  sensor
measures the electrostatic capacity of the front passenger’s se at. The
SAS unit is designed to prevent the front passenger front and side air
bags  and  seat  belt  pretensioner  system  from  deploying  if  the  front
passenger air bag deactivation indicator light turns on.
To  reduce  the  chance  of  injuries  caused  by  deployment  of  the  front
passenger  air  bag,  the  system  deactivates  the  front  passenger  f ront
and side air bags and also the seat belt pretensioner system wh en the
front  passenger  air  bag  deactivat ion  indicator  light  turns  on. Refer  to
the following table for the front passenger air bag deactivatio n indica-
tor light illumination conditions.
This system shuts off the front p assenger front and side air bags and
seat  belt  pretensioner  system,  s o  make  sure  the  front  passenger  air
bag  deactivation  indicator  light  turns  on  according  to  the  foll owing
table.
The  air  bag/front  seat  belt  pretensioner  system  warning  light  f lashes
and the front passenger air bag deactivation indicator light il luminates
if  the  sensors  have  a  possible  ma lfunction.  If  this  happens,  the  front
passenger  front  and  side  air  bags  and  seat  belt  pretensioner  sy stem
will not deploy.
First,  please  read  “Supplemental  Restraint  System  (SRS)  Pre-
cautions” ( P. 66) carefully.
Front Passenger Occupant  Classification Sensor 
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YARIS_YARIS HATCHBACK_OM_OM99V59z_(U)
831-4. SRS Air Bags
1
Essential Safety Equipment
■Front passenger air bag deactivation indicator light
This  indicator  light  turns  on  to
remind  you  that  the  front  pas-
senger  front  and  side  air  bags
and  seat  belt  pretensioner  will
not deploy duri ng a collision.
If the front passenger occupant cl assification sensor is normal,  the
indicator  light  turns  on  when  the  ignition  is  switched  ON.  The  light
turns off after a few seconds. Then, the indicator light turns  on or is
off under the following conditions:
■Front passenger air bag deactivat ion indicator light on/off con-
dition chart
*1: The  occupant  classification  sensor  may  not  detect  a  child  seat ed  on  the
seat,  in  a  child-restraint  system,  or  a  junior  seat  depending  o n  the  child’s
physical size and seated posture.
*2: If a smaller adult sits on the front passenger seat, the senso rs might detect
the person as being a child depending on the person’s physique.
The curtain air bag is ready for inflating regardless of what t he front
passenger air bag deactivation in dicator light on/off condition chart
indicates.
Condition detected 
by the front passen-
ger occupant classi-
fication systemFront passen-ger air bag 
deactivation 
indicator lightFront passen- ger front and 
side air bagsFront passen- ger seat belt 
pretensioner 
system
Empty  (Not  occu-
pied)OnDeactivatedDeactivated
A  child  less  than  1
year old is seated in
a child-restraint sys-
tem
OnDeactivatedDeactivated
Child*1On or offDeactivated or  readyDeactivated or ready
Adult*2OffReadyReady 
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YARIS_YARIS HATCHBACK_OM_OM99V59z_(U)
1-4. SRS Air Bags
If  the  front  passenger  air  bag  deactivation  indicator  light  does  not
turn  on  when  the  ignition  is  swi tched  ON  and  does  not  turn  on  a s
indicated  in  the  front  passenger  air  bag  deactivation  indicator   light
on/off  condition  chart,  do  not  allow  an  occupant  to  sit  in  the  front
passenger  seat  and  consult  your  Toyota  dealer  as  soon  as  possi-
ble. The system may not wor k properly in an accident.
●The  system  requires  about  10  seconds  to  alternate  between  turning  the
front passenger front and side air bags and seat belt pretensio ner system on
or off.
● The front passenger air bag deactivation indicator light may tu rn on repeat-
edly  if  luggage  or  other  items  are  put  on  the  front  passenger  s eat,  or  if  the
temperature of the vehicle’s interior changes suddenly.
● The  front  passenger  air  bag  deactivation  indicator  light  may  tu rn  on  for  10
seconds if the electrostatic capacity on the front passenger se at changes.
● The air bag/front seat belt pretensioner system warning light might turn on if
the front passenger seat receives a severe impact.
● If  the  front  passenger  air  bag  deactivation  indicator  light  doe s  not  turn  on
after installing a child-restraint system on the front passenge r seat, first, re-
install your child-restraint system according to the procedure  in this owner’s
manual. Then,  if  the  front  passenger  air  bag  deactivation  indic ator  light  still
does not turn on, install the child-restraint system on the rea r seat and con-
sult your Toyota dealer as soon as possible.
● If  the  front  passenger  air  bag  deactivation  indicator  light  tur ns  on  when  an
occupant is seated directly in the front passenger seat, have the passenger
re-adjust their posture by sitting with their feet on the floor , and then re-fas-
tening the seat belt. If the front passenger air bag deactivati on indicator light
remains turned on, move the passenger to the rear seat. If sitt ing in the rear
seat is not possible, slide the front passenger seat as far bac k as possible.
Consult your Toyota dealer as soon as possible. 
Page 85 of 572

YARIS_YARIS HATCHBACK_OM_OM99V59z_(U)
851-4. SRS Air Bags
1
Essential Safety Equipment
WARNING
■Do  not  allow  an  occupant  in  the  front  passenger’s  seat  to  sit  w ith  a
posture which makes it difficult for the front passenger occupa nt clas-
sification sensor to detect  the occupant correctly
Sitting  in  the  front  passenger’s  seat  with  a  posture  which  make s  it  difficult
for  the  front  passenger  occupant  classification  sensor  to  detec t  the  occu-
pant  correctly  is  dangerous.  If  the  front  passenger  occupant  classification
sensor cannot detect the occupant sitting on the front passenge r’s seat cor-
rectly, the front passenger front and side air bags and pretens ioner system
may  not  operate  (deploy)  or  they  may  operate  (deploy)  accidenta lly.  The
front passenger will not have the supplementary protection of t he air bags or
the accidental operation (deployment) of the air bags could res ult in serious
injury  or  death.  Under  the  following  conditions,  the  front  pass enger  occu-
pant  classification  sensor  cannot  detect  a  passenger  sitting  on  the  front
passenger’s  seat  correctly  and  the  deployment/non-deployment  of   the  air
bags cannot be controlled as indicated in the front passenger air bag deac-
tivation indicator light on/off condition chart. For example:
● A front passenger is seated as shown in the following figure:
● A rear passenger pushes up on the front passenger seat with their feet.
● Luggage or other items placed under the front passenger seat or  between
the front passenger seat and driver seat that push up the front passenger
seat bottom.
● An object, such as a seat cushion, is put on the front passenge r’s seat or
between the passenger’s back and the seatback. 
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YARIS_YARIS HATCHBACK_OM_OM99V59z_(U)
1-4. SRS Air Bags
WARNING
■Do  not  allow  an  occupant  in  the  front  passenger’s  seat  to  sit  w ith  a
posture which makes it difficult for the front passenger occupa nt clas-
sification sensor to detect  the occupant correctly
● A seat cover is put on the front passenger’s seat.
● Luggage  or  other  items  are  placed  on  the  seat  with  the  child  in   the  child-
restraint system.
● A  rear  passenger  or  luggage  push  or  pull  down  on  the  front  pass enger
seatback.
● Luggage  or  other  items  are  placed  on  the  seatback  or  hung  on  the  head
restraint.
● The seat is washed.
● Liquids are spilled on the seat.
● The  front  passenger  seat  is  moved  backward,  pushing  into  luggag e  or
other items placed behind it.
● The front passenger seatback contacts the rear seat.
● Luggage or other items are placed between the front passenger s eat and
driver seat.
● An electric device is put on the front passenger’s seat.
● An  additional  electrical  device,  such  as  a  seat  warmer  is  installed  to  the
surface of the front passenger seat.
The front passenger front and side air bags and seat belt prete nsioner sys-
tems will deactivate if the front passenger air bag deactivatio n indicator light
turns on.
NOTICE
● To assure proper deployment of the front air bag and to prevent  damage to
the sensor in the front seat cushion:
• Do not place sharp objects on the front seat cushion or leave  heavy lug-
gage on them.
• Do not spill any liquids on the front seats or under the front seats.
● To allow the sensors to function properly, always perform the f ollowing:
• Adjust  the  front  seats  as  far  back  as  possible  and  always  sit  upright
against the seatbacks with seat belts worn properly.
• If  you  place  your  child  on  the  front  passenger  seat,  secure  th e  child-
restraint system properly and slide the front passenger seat as  far back
as possible ( P. 57). 
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YARIS_YARIS HATCHBACK_OM_OM99V59z_(U)
1-4. SRS Air Bags
1
Essential Safety Equipment
Constant Monitoring
The following components of the air bag systems are monitored by  a
diagnostic system: • Crash sensors, and diagnostic module (SAS unit)
• Front air bag sensors
• Air bag modules
• Side crash sensors
• Air bag/Front seat belt pret ensioner system warning light
• Front seat belt pretensioners
• Related wiring
• Front passenger air bag d eactivation indicator light
• Front passenger occupant  classification sensor
• Front passenger occupant  classification module
The diagnostic module continuously monitors the system’s readin ess.
This begins when the ignition is switched ON and continues whil e the
vehicle is being driven.