sensor TOYOTA YARIS HATCHBACK 2009 Owners Manual

59
1-3. Adjustable components (s
eats, mirrors, steering wheel)
1
Before driving
CAUTION
Observe the following precautions to reduce the risk of injury in the event of
sudden braking or an accident.
Failing to do so may cause death or severe injury.
nWearing a seat belt
lEnsure that all passengers wear a seat belt.
l Always wear a seat belt properly.
l 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.
l Toyota recommends that children be seated in the rear seat and always
use a seat belt and/or an appropriate child restraint system.
l 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.
l Do not wear the shoulder belt under your arm.
l Always wear your seat belt low and snug across your hips.
n 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 a collision. ( →P. 53)
n Seat belt pretensioners
lDo 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.
l If the pretensioner has activated, the seat belt becomes locked: it cannot
be further extended, nor will it return to the stowed position. The seat belt
cannot be used again and must be replaced at your Toyota dealer.

82 1-7. Safety information
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)

83
1-7. Safety information
1
Before driving
Your vehicle is equipped with
ADVANCED AIRBAGS designed based
on US motor vehicle safety standards (FMVSS208). The airbag sys -
tem controls airbag deployment power
for the driver and front pas-
senger. The driver airbag system consists of the driver seat’s position
se
nsor 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 imp
acts, the SRS airbag sys-
tem triggers the airbag inflators. A chemical rea
ction in the inflators
quickly fills the airbags with non-toxic gas to help restrain the motion
of the occupants.
n 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. 3 0 8 )
n If the SRS airbags deploy (inflate)
l Bruising and
slight abrasions may result from contact with a deploying
(inflating) SRS airbag.
l A loud noise and white powder will be emitted.
l V
ehicles 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.
l V
ehicles without side and curtain shield airbags: Parts of the airbag mod -
ule (steering wheel hub, airbag cover and inflator) as well as the front
seat
s may be hot for several minutes. The airbag itself may also be hot.

5
When trouble arises
305
5-1. Essential information
Event data recorder
In a crash or a near car crash event
The 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:
l Engine
speed
lWhe
ther the brake pedal was applied or not
lV
ehicle speed
lT
o what extent the accelerator pedal was depressed
lPosition of the
transmission shift lever
l Whe
ther the driver and front passenger wore seat belts or not
lDr
iver’s seat position
lSRS a
irbag deployment data
lSRS a
irbag system diagnostic data
lFron
t passenger’s occupant classification
The information above is intended to be used for the purpose of
improving vehicle safety performan ce. 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.

312 5-2. Steps to take in an emergency
nKey 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).
n L
ight reminder buzzer
The buzzer indicates that the headlight switch is left on (with the key
removed and the driver
’s door opened).
n If the malfunction indic
ator lamp comes on while driving
First check the following:
l Is your vehicle low on gas?
If it is, refuel the vehicle immediately.
l Is the fue
l 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.
n Front p
assenger detect ion sensor and passenger seat belt reminder
If luggage or other load is placed on the front passenger seat, depending on
it
s weight, the reminder light to flash and buzzer to sound.
n
When the tire pressure warning light comes on
Check the tire inflation pressure and adjust to the appropriate level.
nThe 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
a
s natural air leaks or tire inflation pressure changes caused by temper -
ature. In this case, adjusting the ti re inflation pressure will turn of
f the
warning light (after a few minutes).
nWhen a tire is replaced with a spare tire
The compact spare tire is not equipped with the tire pressure warning
valve and trans
mitter. 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.

387
Alphabetical index
Fog lights switch ...................
147
Hazard lights switch ............. 296
Ignition switch ....................... 125
Headlights switch ................. 145
Light switch........................... 145
Power door lock switch........... 32
Power window switch ............. 67
Turn signal lights .................. 131
Window lock switch ................ 68
Wiper and washer ........ 148, 151
Tachometer .............................. 135
Tail lights
Indicator................................ 145
Replacing light bulbs ............ 286
Switch ................................... 145
Wattage ................................ 352
Theft deterrent system Alarm ...................................... 76
Engine immobilizer system..... 74
Theft prevention labels ........... 78
Theft prevention labels ............. 78
Tire inflation pressure ............ 264
Tire information Glossary ............................... 363
Size ...................................... 360
Tire identification number ..... 359
Uniform tire quality
grading ............................... 361
Tires Chains .................................. 161
Checking .............................. 258
If you have a flat tire ............. 317
Identification number ............ 356
Inflation pressure .......... 264, 351
Inflation pressure sensor ...... 259
Information ........................... 356
Replacing ..................... 258, 317
Rotating tires ........................ 258
Size ...................................... 351
Snow tires............................. 161
Spare tire .............................. 317Tire pressure warning

system ........................258, 310
Warning light ......................... 310
Tools ......................................... 317
Total load capacity................... 160
Towing Dinghy towing................ 173, 174
Emergency towing................. 297
Trailer towing................. 164, 165
Trip meter ................................. 138
Turn signal lights
Indicator ................................ 131
Lever ..................................... 131
Replacing light bulbs ............. 286
Switch.................................... 131
Wattage ................................. 352
Vanity mirrors........................... 220
Vehicle identification
number ...................................345
Warning buzzers Brake system ........................ 307
Seat belt reminder ................. 310
Warning lights ABS ....................................... 308
Airbag system ....................... 308
Anti-lock brake system .......... 308
Brake system ........................
307
Charging system .. .................308
Driver’s seat belt ................... 310
Electric power steering
system ................................308
Electronic engine control
system ................................308
Engine oil replacement.......... 310
EPS system........................... 308
Front passenger occupant classification system ...........308
Front passenger’s seat belt ... 310
High engine coolant
temperature ........................308
T
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