coolant temperature TOYOTA AYGO 2012 Owners Manual (in English)

144 2-2. Instrument cluster
AYGO_WE_99E96E
Changing the display
Switches between odometer and
trip meter displays. When the trip
meter is displayed, pressing and
holding the button will reset the
trip meter.
The meters and display operate when
The engine switch is in the “ON” position.
NOTICE
To prevent damage to the engine and its components
Vehicles with a tachometer: Do not let the indicator needle of the tachome-
ter enter the red zone, which indicates the maximum engine speed.
The engine may be overheating if the high engine coolant temperature
warning light flashes or turns on. In this case, immediately stop the vehicle
in a safe place, and check the engine after it has cooled completely.
(
P. 336)

249 4-2. Maintenance
4
Maintenance and care
AYGO_WE_99E96E
Where to go for service?
In order to maintain your vehicle in the best possible condition, Toyota rec-
ommends that all repairs and service operations be carried out by autho-
rized Toyota dealers or repairers or other duly qualified and equipped
professionals. For repairs and services covered by your warranty, please
visit an authorized Toyota dealer or repairer, who will use genuine Toyota
parts in repairing any difficulties you may encounter. There can also be
advantages in utilizing authorized Toyota dealers or repairers for non-war-
ranty repairs and services, as members of the Toyota network will be able to
expertly assist you with any difficulties you may encounter.
Your Toyota dealer or repairer, or another duly qualified and equipped pro-
fessional will perform all of the scheduled maintenance on your vehicle reli-
ably and economically due to their experience with Toyota vehicles.
Does your vehicle need repairs?
Be on the alert for changes in performance and sounds, and visual tip-offs
that indicate service is needed. Some important clues are:
Engine misses, stumbling or pinging
Appreciable loss of power
Strange engine noises
A fluid leak under the vehicle (However, water dripping from the air condi-
tioning system after use is normal.)
Change in exhaust sound (This may indicate a dangerous carbon mon-
oxide leak. Drive with the windows open and have the exhaust system
checked immediately.)
Flat-looking tires, excessive tire squeal when cornering, uneven tire wear
Vehicle pulls to one side when driven straight on a level road
Strange noises related to suspension movement
Loss of brake effectiveness, spongy feeling brake pedal or clutch pedal
(vehicles with a manual transmission), pedal almost touches the floor,
vehicle pulls to one side when braking
Engine coolant temperature continually higher than normal
If you notice any of these clues, take your vehicle to any authorized Toyota
dealer or repairer, or another duly qualified and equipped professional as
soon as possible. Your vehicle may need adjustment or repair.

253 4-3. Do-it-yourself maintenance
4
Maintenance and care
AYGO_WE_99E96E
CAUTION
When working near the electric cooling fan or radiator grille
Be sure the engine switch is off.
With the engine switch on, the electric cooling fan may automatically start to
run if the air conditioning is on and/or the coolant temperature is high.
(P. 266)
Safety glasses
Wear safety glasses to prevent flying or falling material, fluid spray, etc. from
getting in your eyes.
NOTICE
If you remove the air cleaner filter
Driving with the air cleaner filter removed may cause excessive engine wear
due to dirt in the air. Also, a backfire could cause a fire in the engine com-
partment.
If the fluid level is low or high
It is normal for the brake fluid level to go down slightly as the brake pads
wear or when the fluid level in the accumulator is high.
If the reservoir needs frequent refilling, it may indicate a serious problem.

265 4-3. Do-it-yourself maintenance
4
Maintenance and care
AYGO_WE_99E96E
Coolant selection
Only use “Toyota Super Long Life Coolant” or a similar high quality ethylene
glycol based non-silicate, non-amine, non-nitrite, and non-borate coolant
with long-life hybrid organic acid technology.
“Toyota Super Long Life Coolant” is a mixture of 50% coolant and 50%
deionized water. (Minimum temperature: -35C [-31F])
For more details about engine coolant, contact any authorized Toyota dealer
or repairer, or another duly qualified and equipped professional.
If the coolant level drops within a short time of replenishing
Visually check the radiator, hoses, engine coolant reservoir cap, drain cock
and water pump.
If you cannot find a leak, have any authorized Toyota dealer or repairer, or
another duly qualified and equipped professional, test the cap and check for
leaks in the cooling system.
CAUTION
When the engine is hot
Do not remove the radiator cap.
The cooling system may be under pressure and may spray hot coolant if the
cap is removed, causing serious injuries, such as burns.
NOTICE
When adding coolant
Coolant is neither plain water nor straight antifreeze. The correct mixture of
water and antifreeze must be used to provide proper lubrication, corrosion
protection and cooling. Be sure to read the antifreeze or coolant label.
If you spill coolant
Be sure to wash it off with water to prevent it from damaging parts or paint.

310
5-1. Essential information
AYGO_WE_99E96E
If you think something is wrong
If you notice any of the following symptoms, your vehicle probably
needs adjustment or repair. Contact any authorized Toyota dealer or
repairer, or another duly qualified and equipped professional as
soon as possible.
Visible symptoms
Fluid leaks under the vehicle
(Water dripping from the air conditioning after use is normal.)
Flat-looking tires or uneven tire wear
High engine coolant temperature warning light comes on
“STOP” indicator flashes
Audible symptoms
Changes in exhaust sound
Excessive tire squeal when cornering
Strange noises related to the suspension system
Pinging or other noises related to the engine
Operational symptoms
Engine misses, stumbling or running roughly
Appreciable loss of power
Vehicle pulls heavily to one side when braking
Vehicle pulls heavily to one side when driving on a level road
Loss of brake effectiveness, spongy feeling, pedal almost
touches the floor

5
313 5-2. Steps to take in an emergency
When trouble arises
AYGO_WE_99E96E
Stop the vehicle immediately.
The following warnings indicate the possibility of damage to the
vehicle that may lead to an accident. Immediately stop the vehicle
in a safe place and contact any authorized Toyota dealer or
repairer, or another duly qualified and equipped professional.
Warning lightWarning light/Details
Charging system warning light
Indicates a malfunction in the vehicle’s charging system.
Low engine oil pressure warning light
Indicates that the engine oil pressure is too low.
High engine coolant temperature warning light
Indicates that the engine is almost overheating. (P. 336)
(Flashes)“STOP” warning light
Indicates a malfunction in:
• Engine oil pressure is too low; or
• Engine is almost overheating.

336
5-2. Steps to take in an emergency
AYGO_WE_99E96E
If your vehicle overheats
If your engine overheats:
Stop the vehicle in a safe place and turn off the air condi-
tioning system.
Check to see if steam is coming out from under the hood.
If you see steam:
Stop the engine. Carefully lift the hood after the steam sub-
sides and then restart the engine.
If you do not see steam:
Leave the engine running and carefully lift the hood.
Check to see if the cooling fan is operating.
If the fan is operating:
Wait until the high engine coolant temperature warning light
goes off and then stop the engine.
If the fan is not operating:
Stop the engine immediately and call any authorized Toyota
dealer or repairer, or another duly qualified and equipped
professional.
After the engine has cooled
down sufficiently, check the
engine coolant level and
inspect the radiator core (radi-
ator) for any leaks.

5
337 5-2. Steps to take in an emergency
When trouble arises
AYGO_WE_99E96E
Overheating
If you observe the following, your vehicle may be overheating:
The high engine coolant temperature warning light comes on or a loss of
power is experienced.
Steam comes out from under the hood.
CAUTION
To prevent an accident or injury when inspecting under the hood of
your vehicle
If steam is seen coming from under the hood, do not open the hood until
the steam has subsided. The engine compartment may be very hot, caus-
ing serious injuries such as burns.
Keep hands and clothing away from the fan and drive belt while the engine
is running.
Do not loosen the radiator cap while the engine and radiator are hot.
Serious injury, such as burns, may result from hot coolant and steam
released under pressure.
Add engine coolant if neces-
sary.
Water can be used in an emer-
gency if engine coolant is
unavailable.
(P. 350)
Have the vehicle inspected at the nearest authorized Toyota dealer
or repairer, or another duly qualified and equipped professional as
soon as possible.

364 Alphabetical index
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Sun visors ................................ 232
Switch
Airbag manual on-off
switch.................................... 93
Emergency flasher switch ..... 304
Engine switch ........................ 130
Fog light switch ..................... 152
Hazard light switch ................ 304
Ignition switch ....................... 130
Light switches ....................... 148
Power window switch .............. 66
Wiper and washer ......... 154, 156
Tachometer .............................. 143
Tail lights
Replacing light bulbs ............. 292
Switch ................................... 148
Wattage................................. 354
Theft deterrent system
Engine immobilizer system ..... 73
Tire inflation pressure ............. 275
Tires
Chains ................................... 163
Checking ............................... 272
If you have a flat tire.............. 318
Inflation pressure .................. 275
Replacing .............................. 318
Rotating tires ......................... 272
Size ....................................... 353
Snow tires ............................. 163
Spare tire .............................. 318
Tools ......................................... 318
Total load capacity .................. 344
Towing
Emergency towing ................ 305
Trailer towing ........................ 167
Traction control ....................... 158
TRC ........................................... 158
Trip meter ................................. 143Turn signal lights
Replacing light bulbs............. 292
Switch ................................... 140
Wattage ................................ 354
USB memory ............................ 206
Vanity mirrors .......................... 233
Vehicle identification
number ................................... 344
Vehicle stability control .......... 158
VSC ........................................... 158
Warning buzzers
Electric power steering
system ................................ 315
Light reminder ....................... 151
Low fuel level ........................ 316
Multi-mode manual
transmission ....................... 313
Seat belt reminder ................ 316
Warning lights
Anti-lock brake system.......... 315
Brake assist system .............. 315
Brake system ........................ 312
Charging system ................... 313
Electric power steering
system ................................ 315
Electronic engine control
system ................................ 315
Engine oil pressure ............... 313
High engine coolant
temperature warning light ... 313
Low fuel level ........................ 316
Malfunction indicator lamp .... 315
Multi-mode manual
transmission ....................... 313
Pretensioners........................ 315
Seat belt reminder light ......... 316
SRS airbags.......................... 315
“STOP” warning light ............ 313
T
U
V
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366
AYGO_WE_99E96E
What to do if...
What to do if...
A tire puncturesP. 318If you have a flat tire
The engine does not start
P. 329If the engine will not start
P. 7 3Engine immobilizer system
P. 332If the vehicle battery is discharged
The shift lever cannot be
moved outP. 330If the shift lever cannot be shifted
The high engine coolant temperature
warning light flashes or comes on
Steam can be seen coming
from under the hood
P. 336If your vehicle overheats
The key is lostP. 331If you lose your keys
The battery runs outP. 332If the vehicle battery is discharged
The doors cannot be lockedP. 4 4Side doors
P. 4 8Back door
The vehicle is stuck in
mud or sandP. 339If the vehicle becomes stuck
A warning light or indicator light
comes onP. 312If a warning light turns on or a
warning buzzer sounds...