2009 TOYOTA YARIS HATCHBACK check engine

252 4-3. Do-it-yourself maintenance
Radiator and condenser
Check the radiator and condenser and clear any foreign objects.
If either of the above parts are extr e
mely dirty or you are not sure of
their condition, have your vehicl e checked by your Toyota dealer.
Brake fluid
nChecking fluid level
The brake fluid level should be
b
etween the MAX and MIN lines
on the reservoir.
n Adding fluid
Make sure to check the fluid type and prepare the necessary items.
CAUTION
n When the engine is hot
Do not touch the radiator or condenser as they may be hot and may cause
burns.
Fluid type FMVSS No.116 DOT 3 or SAE J1703 brake fluid
n Brake fluid can absorb moisture from the air
Excess moisture in the fluid can cause a dangerous loss of braking effi -
ciency. Use only newly opened brake fluid.

275
4-3. Do-it-yourself maintenance
4
Maintenance and care
Checking and replacing fuses
If any of the electrical components do not operate, a fuse may have
blown. If this happens, check and replace the fuses as necessary.
Turn the engine switch off.
The fuses are located in the following places. To check the
fuses, follow the in stru
ctions below.
n Engine comp
artment
Ty p e A 1.Push the tab in and lift the co
ver off.
2.Remove the cover.

308 5-2. Steps to take in an emergency
Stop the vehicle immediately.
The following warnings indicate the possibility of damage to the vehi-
cle that may lead to an accident. Immediately stop the vehicle in a
sa
fe place and contact your Toyota dealer.
*: The light may come on when the oil level is extremely low. It is not designed to indicate low oil level, and the oil level must be checked using the engine
oil level dipstick.
Have the vehicle inspected immediately.
Failing to investigate the cause of the following warnings may lead to
the system operating abnormally and possibly cause an accident.
Have the vehicle inspected by your Toyota dealer immediately.
Warning lightWarning light/Details
Charging system warning light Indicates a malfunction in the vehicle’s charging sys-
tem.
Low engine oil pressure warning light Indicates that the engine oil pressure is too low*.
High engine coolant temperature warning light Indicate a engine is almost overheating.( →P. 337)
Warning lightWarning light/Details
(except Canada)
(Canada) Malfunction indicator lamp
Indicates a malfunction in:
• The electronic engine control system;
• The electronic throttle control system;
• The electronic automatic transmission control sys-tem; or
• Emission control system.

5
When trouble arises
311
5-2. Steps to take in an emergency
*1: Driver's seat belt reminder:
The driver’s seat belt reminder sounds to alert the driver that his or her
seat
belt is not fastened. Once the engine switch is turned to the ON or START
position, the buzzer sounds for 6 seconds. If the vehicle has reached a \
speed of at least 12 mph (20 km/h), the buzzer sounds intermittently for
approximately 10 seconds. Then, if the seat belt is still unfastened, the
buzzer will sound in a different tone for approximately 20 more seconds.
*2:Front passenger’s seat belt reminder:
The front passenger’s seat belt reminder sounds to alert the front passenger
that his or her seat belt is
not fastened. The buzzer sounds intermittently for
approximately 10 seconds after the vehicle has reached a speed of at least
12 mph (20 km/h). Then, if the seat belt is still unfastened, the buzzer will
sound in a different tone for approximately 20 more seconds.
(except Canada) Engine oil replacement
reminder light
• Illuminates for about 3
seconds and then flashes
for about 12 seconds: Indi-
cates that the engine oil is
scheduled to be changed. Check the engine oil,
and change if neces-
sary.
• Comes on and remains: Indicates that the engine
oil should be changed. Check and change the
engine oil.
Warning lightWarning light/DetailsCorrection procedure

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.

5
When trouble arises
313
5-2. Steps to take in an emergency
nIf the tire pressure warning system is inoperative
The tire pressure warning system will be disabled in the following condi-
tions:

(When the condition be comes normal, the system will work properly.)
lIf tires not equipped with tire pressure warning valves and transmit-
ters are used.
lIf the ID code on the tire pressure warning valves and transmitters is
not registered in the tire pressure warning computer.
lIf the tire inflation pressure is 73 psi (500 kPa, 5.1 kgf/cm2 or bar) or
higher.
The tire pressure warning system may be disabled in the following condi-
tions:
(When the condition be comes normal, the system will work properly.)
lIf electronic devices or facilities using similar radio wave frequencies
are nearby.
lIf a radio set at similar frequencies is in use in the vehicle.
lIf a window tint that affects the radio wave signals is installed.
lIf there is a lot of snow or ice on the vehicle, in particular around the
wheels or wheel housings.
lIf non-genuine Toyota wheels are used. (Even if you use Toyota
wheels, the tire pressu re warning system may not work properly with
some types of tires.)
lIf tire chains are used.
nIf the tire pressure warning light comes on after blinking for 1
minute frequently
If the tire pressure warning light comes on after blinking for 1 minute fre-
quently when the engine switch is tu rned to the ON position, have it
checked by your Toyota dealer.
n After changing the engine oil (except Canada)
Make sure to reset the oil maintenance data. ( →P. 249)

326 5-2. Steps to take in an emergency
CAUTION
nUsing the jack
Improper use of the jack may lead to death or injuries due to the vehicle
suddenly falling off the jack.
lDo not use the jack for any purpose other than replacing tires or install-
ing and removing tire chains.
lOnly use the jack that comes with this vehicle for replacing a flat tire.
Do not use it on other vehicles, an d do not use other jacks for replac-
ing tires on this vehicle.
lAlways check that the jack is securely set to the jack point.
lDo not put any part of your body under the vehicle supported by a jack.
lDo not start or run the engine while your vehicle is supported by the
jack.
lDo not raise the vehicle while someone is in it.
lWhen raising the vehicle, do not put an object on or under the jack.
lDo not raise the vehicle to a heigh t greater than that required to
replace the tire.
lUse a jack stand if it is necessary to get under the vehicle.
Take particular care when lowering the vehicle to ensure that no one
working on or near the vehicle will be injured.
nReplacing a flat tire
Observe the following precautions to reduce the risk of death or serious
injury.
lNever use oil or grease on the wheel bolts or wheel nuts.
The oil or grease can cause the wheel nuts to loosen, causing a seri-
ous accident.
Remove any oil or grease on the wheel bolts or wheel nuts.
lHave the wheel nuts tightened with a torque wrench to 76 ft·lbf (103
N·m, 10.5 kgf·m) as soon as possible after changing wheels.
Failure to follow these precautions could cause the nuts to loosen and
the wheel may fall off, which could lead to an accident causing death
or serious injury.

5
When trouble arises
335
5-2. Steps to take in an emergency
n
Starting the engine when the battery is discharged (vehicles with an
automatic transmission)
The engine cannot be started by push-starting.
n A
voiding a discharged battery
lT
urn off the headlights and the audio system while the engine is turned
off.
l T
urn off any unnecessary electrical components when the vehicle is run -
ning at a low speed for an extended period, such as in heavy traffic, etc.
CAUTION
nAvoiding battery fires or explosions
Observe the following precautions to prevent accidentally igniting the flam-
mable gas that may be emitted from the battery.
lMake sure the jumper cable is connected to the correct terminal and that it
is not unintentionally in contact with any part other than the intended termi-
nal.
l Do not allow the jumper cables to come into contact with the “+” and “-” ter-
minals.
l Do not smoke, use matches, cigarette lighters or allow open flame near
the battery.
Reinstall the cover.
Once the engine starts, have the vehicle checked at your Toyota
dealer as soon as possible.