2011 TOYOTA AYGO check engine

DO−IT−YOURSELF MAINTENANCE: Engine and Chassis273
WHEN TO USE SNOW TIRES OR
CHAINS
Snow tires or chains are recommended
when driving on snow or ice.
On wet or dry roads, conventional tires
provide better traction than snow tires.
SNOW TIRE SELECTION
If you need snow tires, select tires of
the same size, construction and load
capacity as the originally installed tires.
Do not use tires other than those men-
tioned above. Do not install studded tires
without first checking local regulations for
possible restrictions.
CAUTION
Do not use snow tires other than the
manufacturer ’s recommended size, as
this may cause dangerous handling
characteristics resulting in loss of
control. Otherwise, an accident may
occur resulting in death or serious
injuries.
SNOW TIRE INSTALLATION
Snow tires should be installed on all
wheels.
Installing snow tires on the front or rear
wheels only can lead to an excessive dif-
ference in road grip capability between the
front and rear tires which could cause
loss of vehicle control.
When storing removed tires, you should
store them in a cool dry place.
Mark the direction of rotation and be sure
to install them in the same direction when
replacing.
CAUTION
DDo not drive with the snow tires
incorrectly inflated.
DObserve permissible maximum
speed for your snow tires and the
legal speed limit.
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Installing snow tires and
chains

274DO−IT−YOURSELF MAINTENANCE: Engine and Chassis
G72017
Side chain
Cross chain
TIRE CHAIN SELECTION
Use the tire chains of correct size.
For155/65R14 tires, use the following
type chains.
A Diameter of side chain:
4mm(0.16in.)
B Diameter of cross chain:
5 mm (0.20 in.)
Regulations regarding the use of tire
chains vary according to location or
type of road, so always check local reg-
ulations before installing chains.
NOTICE
If the wrong combination of tire and
chain is used, the chains could dam-
age the vehicle body.
CHAIN INSTALLATION
Install the chains on the front tires as
tightly as possible. Do not use tire
chains on the rear tires. Retighten the
chains after driving 0.5—1.0 km
(1/4—1/2 mile).
When installing chains on your tires, care-
fully follow the instructions of the chain
manufacturer.
If wheel covers are used, they will be
scratched by the chain band, so remove
the covers before putting on the chains.
CAUTION
DDo not exceed 50 km/h (30 mph) or
the chain manufacturer ’s recom-
mended speed limit, whichever is
lower.
DDrive carefully avoiding bumps,
holes, and sharp turns, which may
cause the vehicle to bounce.
DAvoid sharp turns or locked−wheel
braking as use of chains may ad-
versely affect vehicle handling.
DWhen driving with chains installed,
be sure to drive carefully. Slow
down before entering curves to
avoid losing control of the vehicle.
Otherwise an accident may occur.
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DO−IT−YOURSELF MAINTENANCE: Engine and Chassis275
Replacing wheels
WHEN TO REPLACE YOUR WHEELS
If you have wheel damage such as
bending, cracks or heavy corrosion, the
wheel should be replaced.
If you fail to replace a damaged wheel,
the tire may slip off the wheel or cause
loss of handling control.
WHEEL SELECTION
When replacing wheels, care should be
taken to ensure that the wheels are re-
placed by ones with the same load ca-
pacity, diameter, rim width, and inset
∗.
Correct replacement wheels are available
at your Toyota dealer or repairer, or
another duly qualified and equipped pro-
fessional.
∗: Conventionally referred to as “offset”.
A wheel of a different size or type may
adversely affect handling, wheel and bear-
ing life, brake cooling, speedometer/odom-
eter calibration, stopping ability, headlight
aim, bumper height, vehicle ground clear-
ance, and tire or snow chain clearance to
the body and chassis.
Replacement with used wheels is not rec-
ommended as they may have been sub-
jected to rough treatment or high mileage
and could fail without warning. Also, bent
wheels which have been straightened may
have structural damage and therefore
should not be used. Never use an inner
tube in a leaking wheel which is designed
for a tubeless tire.
CAUTION
Do not use wheels other than the
manufacturer ’s recommended size, as
this may cause dangerous handling
characteristics resulting in loss of
control. Otherwise, an accident may
occur resulting in death or serious
injuries.
Aluminum wheel precautions
DWhen installing aluminum wheels,
check that the wheel bolts are tight
after driving your vehicle the first1600
km (1000 miles).
DIf you have rotated, repaired, or
changed your tires, check that the
wheel bolts are still tight after driving
1600 km (1000 miles).
DWhen using tire chains, be careful not
to damage the aluminum wheels.
DToyota recommends the use of Toyota
genuine wheel bolts and wrench de-
signed for your aluminum wheels. Oth-
er bolts and wrenches of matching
quality can also be used.
DWhen balancing your wheels, Toyota
recommends the use of Toyota genuine
balance weights. Other balance weights
canalsobeused.
DAs with any wheel, periodically check
your aluminum wheels for damage. If
damaged, replace immediately.
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278DO−IT YOURSELF MAINTENANCE: Electrical components
CAUTION
BATTERY PRECAUTIONS
The battery produces flammable and
explosive hydrogen gas.
DDo not cause a spark from the bat-
tery with tools.
DDo not smoke or light a match near
the battery.
The electrolyte contains poisonous
and corrosive sulfuric acid.
DAvoid contact with eyes, skin or
clothes.
DNever ingest electrolyte.
DWear protective safety glasses when
working near the battery.
DKeep children away from the bat-
tery.
EMERGENCY MEASURES
DIf electrolyte gets in your eyes,
flush your eyes with clean water
immediately and get immediate
medical attention. If possible, con-
tinue to apply water with a sponge
or cloth while en route to the medi-
cal office.
DIf electrolyte gets on your skin,
thoroughly wash the contact area. If
you feel pain or burning, get medi-
cal attention immediately.
DIf electrolyte gets on your clothes,
there is a possibility of its soaking
through to your skin, so immediate-
ly take off the exposed clothing and
follow the procedure above, if nec-
essary.
DIf you accidentally swallow electro-
lyte, drink a large quantity of water
or milk. Follow with milk of magne-
sia, beaten raw egg or vegetable
oil. Then go immediately for emer-
gency help.
The electricity stored in the battery will
discharge gradually even when the vehicle
is not in use, due to natural discharge
and the draining effects of certain electri-
cal appliances. If the vehicle is left for a
long time, the battery may discharge, and
the engine may be unable to start. (The
battery recharges automatically during
driving.)
The meanings of each caution symbol
on the top of the battery are as fol-
lows:
No smoking, no naked
flames, no sparks
Shield eyes
Keep away from children
Battery acid
Note operating instructions
Explosive gas
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Checking battery condition—
—Precautions

DO−IT YOURSELF MAINTENANCE: Electrical components279
—Checking battery exterior
MS73029a
Terminals
Hold−down clamp
Check the battery for corroded or loose
terminal connections, cracks, and a
loose hold−down clamp.
a. If the battery is corroded, wash it off
with a solution of warm water and bak-
ing soda. Coat the outside of the termi-
nals with grease to prevent further cor-
rosion.
b. If the terminal connections are loose,
tighten their clamp nuts—but do not
overtighten.
c. Tighten the hold−down clamp only
enough to keep the battery firmly in
place. Overtightening may damage the
battery case.
NOTICE
zBe sure the engine and all accesso-
ries are off before performing main-
tenance.
zWhen checking the battery, remove
the ground cable from the negative
terminal (“−” mark) first and rein-
stall it last.
zBe careful not to cause a short cir-
cuit with tools.
zTake care no solution gets into the
battery when washing it.
MS73032
Green Dark White
CHECKING BY THE INDICATOR
Check the battery condition by the indi-
cator color.
Indicator color
Condition
GreenGood
Dark
Charging
necessary, have
battery checked by
any authorized
Toyota dealer or
repairer, or another
duly qualified and
equipped
professional.
White
Replace or have
battery checked by
any authorized
Toyota dealer or
repairer, or another
duly qualified and
equipped
professional.
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280DO−IT YOURSELF MAINTENANCE: Electrical components
Battery recharging precautions
During recharging, the battery is pro-
ducing hydrogen gas.
Therefore, before recharging:
1. If recharging with the battery installed
on the vehicle, be sure to turn the
engine switch to the “LOCK” position
and then disconnect the ground cable.
2. Be sure the power switch on the re-
charger is off when connecting the
charger cables to the battery and when
disconnecting them.
CAUTION
DAlways charge the battery in an un-
confined area. Do not charge the
battery in a garage or closed room
where there is not sufficient ventila-
tion.
DOnly do a slow charge (5 A or
less). Charging at a quicker rate is
dangerous. The battery may ex-
plode, causing personal injuries.
NOTICE
Never recharge the battery while the
engine is running. Also, be sure all
accessories are turned off.
Checking and replacing fuses
MS73033
GoodBlown
Ty p e A
MS73034
GoodBlown
Ty p e B
MS73035a
GoodBlown
Ty p e C
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DO−IT YOURSELF MAINTENANCE: Electrical components281
MS73028a
If the headlights or other electrical
components do not work, check the
fuses. If any of the fuses are blown,
they must be replaced.
See “Fuse locations” on page 259 in Sec-
tion 7−1for locations of the fuses.
Turn the engine switch and inoperative
component off. Pull the suspected fuse
straight out and check it.
Determine which fuse may be causing the
problem. See page 300 in Section 8 for
the functions controlled by each circuit.
Type A fuses can be pulled out using the
pull−out tool. The location of the pull−out
tool is shown in the illustration.
If you are not sure whether a fuse has
blown, try replacing the suspected fuse
with one that you know is good.
If the fuse has blown, push a new fuse
into the clip.
If you do not have a spare fuse, in an
emergency you can pull out the “DOME”
fuse, which may be dispensable for nor-
mal driving, and use it if its amperage
rating is the same.If you cannot use one of the same amper-
age, use one that is lower, but as close
to the rating as possible. If the amperage
is lower than that specified, the fuse
might blow out again but this does not
indicate anything wrong. Be sure to get a
correct fuse as soon as possible and re-
turn the substitute to its original clip.
It is a good idea to purchase a set of
spare fuses and keep them in your ve-
hicle for emergencies.
If the new fuse immediately blows out,
there is a problem with the electrical sys-
tem. Have any authorized Toyota dealer or
repairer, or another duly qualified and
equipped professional, correct it as soon
as possible.
CAUTION
Never use a fuse with a higher am-
perage rating, or any other object, in
place of a fuse. This may cause ex-
tensive damage and possibly a fire.
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304INDEX
A
Adding washer fluid 282..................
Adjustment
Front seats 42.........................
Seat belts 48..........................
Air conditioning filter 184.................
Air conditioningsystem 175..............
Airbag manual on−off system 78..........
Airbags 55,62,68........................
Aluminum wheel precautions 275.........
Anti−glare inside rear view mirror 114.....
Anti−lock brake system warning
light 127..............................
Anti−theft steering column lock 138.......
Appearance care
Cleaning the interior 250...............
Protecting your Toyota from
corrosion 246.......................
Washing and waxing 247...............
Audio system 161.......................
Auxiliary catch, Engine hood 36..........
B
Back door 33............................
Battery
Checking battery condition 278.........
Gas caution 278.......................
Handling safety 278....................
Recharging precautions 280............
Winter driving tips 215.................
Before starting the engine 210............
Brake system 200.......................
Brake system warning light 127...........
Brakes
Parking 160...........................
Break−in tips 194........................
C
Carbon monoxide caution 198............
Charging system warning light 127........
Checking and replacing fuses 280........
Checking the engine oil level 264.........
Checking the radiator and
condenser 268........................
Child restraint
Child restraint system 81...............
Installation 90.........................Installation with ISOFIX rigid
anchor 109..........................
ISOFIX child restraint system 109.......
Precautions 80........................
Types of child restraint system 82.......
Using a top strap 106..................
Cleaning the interior 250.................
Clock 188...............................
Cold weather
Operation 215.........................
Compact disc player 162.................
Condenser
Checking the condenser 268...........
Controls, Instrument panel 2.............
Cooling system
Coolant level 267......................
Engine overheating 225................
Radiator 268..........................
Radiator and reservoir 267.............
Radiator cap 225......................
Winter driving tips 215.................
Corrosion prevention 246................
Cup holders 189.........................
D
Defogger
Rear window 121......................
Dimmer switch, Headlight 116............
Directional signals 116...................
Do−it−yourself maintenance
Service precautions 260...............
Does your vehicle need repairing? 255....
Doors
Side doors 28.........................
Driver ’s seat belt reminder buzzer 127....
Driver ’s seat belt reminder light 127.......
Driving
Driving tips 213,215....................
Manual transmission 156...............
Driving in the rain 214....................
Driving tips
Driving in the rain 214..................
Driving tips in various conditions 213....
Driving with a manual
transmission 156....................
Economical driving 216................
Good driving practice 156..............
Pre−trip safety check 211..............
Winter driving tips 215.................
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