2011 TOYOTA YARIS O2 sensor

62 1-3. Adjustable components (seats, mirrors, steering wheel)
CAUTION
Observe the following precautions to reduce the risk of injury in the event of
emergency braking, sudden swerving or an accident.
Failing to do so may cause death or severe injury.
■Wearing a seat belt
●Ensure that all passengers wear a seat belt.
● Always wear a seat belt properly.
● Each seat belt should be used by one person only. Do not use a seat belt
for more than one person at once, including children.
● Toyota recommends that children be seated in the rear seat and always
use a seat belt and/or an appropriate child restraint system.
● Do not recline the seat any more than necessary to achieve a proper seat-
ing position. The seat belt is most effective when the occupants are sitting
up straight and well back in the seats.
● Do not wear the shoulder belt under your arm.
● Always wear your seat belt low and snug across your hips.
■ Adjustable shoulder anchor
Always make sure the shoulder belt is positioned across the center of your
shoulder. The belt should be kept away from your neck, but not falling off
your shoulder. Failure to do so could reduce the amount of protection in an
accident and cause death or serious injuries in the event of emergency brak-
ing, sudden swerving or an accident. ( P. 56)
■ Seat belt pretensioners
●Do not place anything, such as a cushion, on the front passenger’s seat.
Doing so will disperse the passenger’s weight, which prevents the sensor
from detecting the passenger’s weight properly. As a result, the seat belt
pretensioner for the front passenger’s seat may not activate in the event of
a collision.
● If the pretensioner has activated, the SRS warning light will come on. In
that case, the seat belt cannot be used again and must be replaced at
your Toyota dealer.

87
1-7. Safety information
1
Before driving
Airbag system components
Front passenger airbag
Curtain shield airbags (if
equipped)
Side airbags (if equipped)
SRS warning light
Curtain shield airbag sen-
sors (if equipped)
Driver airbag
Side and curtain shield air-
bag sensors (if equipped) Driver’s seat position sen-
sor
Driver’s seat belt buckle
switch
AIR BAG ON and AIR BAG
OFF indicator lights
Airbag sensor assembly
Front airbag sensors
Front passenger’s seat belt
buckle switch
Occupant detection system
(ECU and sensors)

88 1-7. Safety information
Your vehicle is equipped with ADVANCED AIRBAGS designed based
on US motor vehicle safety standards (FMVSS208). The airbag sys-
tem controls airbag deployment po wer for the driver and front pas-
senger. The driver airbag system consists of the driver seat’s position
sensor etc. The front passenger’s airbag system consists of the front
passenger occupant classification sensor etc.
The main SRS airbag system components are shown above. The
SRS airbag system is controlled by the airbag sensor assembly. The
airbag sensor assembly consists of a safing sensor and an airbag
sensor.
In certain types of severe frontal or side impacts, the SRS airbag sys-
tem triggers the airbag inflators. A chemical reaction in the inflators
quickly fills the airbags with non-toxic gas to help restrain the motion
of the occupants.
■ SRS warning light
This warning light system monitors the airbag sensor assembly, front airbag
sensors, side and curtain shield airbag sensors, curtain shield airbag sen-
sors, driver’s seat position sensor, driver’s seat belt buckle switch, front pas-
senger occupant classification system, AIR BAG ON indicator light, AIR
BAG OFF indicator light, front passenger’s seat belt buckle switch, seat belt
pretensioner assemblies, inflators, interconnecting wiring and power
sources. ( P. 320)
■ If the SRS airbags deploy (inflate)
●Bruising and slight abrasions may result from contact with a deploying
(inflating) SRS airbag.
● A loud noise and white powder will be emitted.
● Vehicles with side and curtain shield airbags: Parts of the airbag module
(steering wheel hub, airbag cover and inflator) as well as the front seats,
and parts of the front and rear pillars and roof side rail, may be hot for
several minutes. The airbag itself may also be hot.
● Vehicles without side and curtain shield airbags: Parts of the airbag mod-
ule (steering wheel hub, airbag cover and inflator) as well as the front
seats may be hot for several minutes. The airbag itself may also be hot.
● The front windshield may crack.

5
When trouble arises
317
5-1. Essential information
Event data recorder
In a crash or a near car crash eventThe SRS airbag sensor assembly contains the EDR. In a crash or a
near car crash event, this device may record some or all of the follow-
ing information:
● Engine speed
● Whether the brake pedal was applied or not
● Vehicle speed
● To what extent the accelerator pedal was depressed
● Position of the transmission shift lever
● Whether the driver and front passenger wore seat belts or not
● Driver’s seat position
● SRS airbag deployment data
● SRS airbag system diagnostic data
● Front passenger’s occupant classification
The information above is intended to be used for the purpose of
improving vehicle safety performance. Unlike general data recorders,
the EDR does not record sound data such as conversation between
passengers.
Your vehicle has computers that monitor and control certain aspects
of your vehicle. These computers assi st in driving and maintaining
optimal vehicle performance.
Besides storing data useful for tr oubleshooting, there is an event
data recorder (EDR) that records data in a crash or a near car
crash event.

324 5-2. Steps to take in an emergency
■Key reminder buzzer
The buzzer indicates that the key has not been removed (with the engine
switch in the ACC or LOCK position and the driver’s door opened).
■ Light reminder buzzer
The buzzer indicates that the headlight switch is left on (with the key
removed and the driver’s door opened).
■ If the malfunction indicator lamp comes on while driving
First check the following:
● Is your vehicle low on gas?
If it is, refuel the vehicle immediately.
● Is the fuel tank cap loose?
If it is, tighten it securely.
The light will go off after taking several driving trips.
If the light does not go off even after several trips, contact your Toyota dealer
as soon as possible.
■ Front passenger detect ion sensor and passenger seat belt reminder
If luggage or other load is placed on the front passenger seat, depending on
its weight, the reminder light to flash and buzzer to sound.
■
When the tire pressure warning light comes on
Check the tire inflation pressure and adjust to the appropriate level.
■The tire pressure warning light ma y turn on due to natural causes
The tire pressure warning light may turn on due to natural causes such
as natural air leaks or tire inflation pressure changes caused by temper-
ature. In this case, adjusting the ti re inflation pressure will turn off the
warning light (after a few minutes).
■When a tire is replaced with a spare tire
The compact spare tire is not equipped with the tire pressure warning
valve and transmitter. If a tire goes flat, the tire pressure warning light will
not turn off even though the flat tire is replaced with the spare tire.
Replace the spare tire with the repair ed tire and adjust the proper tire
inflation pressure. The ti re pressure warning light will turn off after a few
minutes.

410 Alphabetical index
Tachometer............................... 140
Tail lightsIndicator ................................ 150
Replacing light bulbs ............. 297
Switch.................................... 150
Wattage ................................. 366
Theft deterrent system Alarm .......................................80
Engine immobilizer system .....78
Theft prevention labels ............83
Theft prevention labels..............83
Tire inflation pressure ............. 275
Tire information Glossary ................................ 377
Size ....................................... 374
Tire identification number ...... 373
Uniform tire quality
grading ................................ 375
Tires Chains ................................... 169
Checking ............................... 269
If you have a flat tire .............. 329
Identification number ............. 370
Inflation pressure........... 275, 365
Inflation pressure sensor ....... 270
Information ............................ 370
Replacing ...................... 269, 329
Rotating tires ......................... 269
Size ....................................... 365
Snow tires ............................. 169
Spare tire............................... 329
Tire pressure warning
system ........................ 269, 322
Warning light ......................... 322
Tools ......................................... 329
Total load capacity................... 168
Towing Dinghy towing................ 181, 182
Emergency towing................. 309
Trailer towing................. 172, 173 Trip meter ................................. 143
Turn signal lights
Indicator ................................ 136
Lever ..................................... 136
Replacing light bulbs ............. 297
Switch ................................... 136
Wattage................................. 366
Vanity mirrors .......................... 228
Vehicle identification number ................................... 359
Vehicle stability control .......... 160
VSC ........................................... 160
Warning buzzers Brake system ........................ 319
Seat belt reminder................. 322
Warning lights
ABS ....................................... 320
Airbag system ....................... 320
Anti-lock brake system .......... 320
Brake system ........................ 320
Charging system .... ............... 320
Driver’s seat belt ................... 322
Electric power steering
system ................................ 320
Electronic engine control
system ................................ 320
Engine oil replacement ......... 322
EPS system .......................... 320
Front passenger occupant classification system ........... 320
Front passenger’s seat belt... 322
High engine coolant
temperature ........................ 320
Low brake fluid ...................... 319
Low engine oil pressure ........ 320
Low tire inflation pressure ..... 322
Low washer fluid ................... 322
Malfunction............................ 320
Open door ............................. 322
Seat belt ................................ 322T
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