2012 TOYOTA AYGO engine coolant

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.

338 5-2. Steps to take in an emergency
AYGO_WE_99E96E
NOTICE
When adding engine coolant
Wait until the engine has cooled down before adding engine coolant.
When adding coolant, do so slowly. Adding cool coolant to a hot engine too
quickly can cause damage to the engine.

361 Alphabetical index
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If your vehicle becomes
stuck ................................... 339
If your vehicle has to be
stopped in an emergency ... 341
If your vehicle needs to be
towed .................................. 305
If your vehicle overheats ....... 336
Engine
Compartment ........................ 260
Engine switch ........................ 130
Hood ..................................... 254
How to start the
engine ................................. 130
Identification number............. 344
If the engine will not start ...... 329
Ignition switch ....................... 130
Overheating .......................... 336
Engine coolant
Capacity ................................ 350
Checking ............................... 264
Preparing and checking
before winter ....................... 163
Engine immobilizer system ...... 73
Engine oil
Capacity ................................ 347
Checking ............................... 261
Preparing and checking
before winter ....................... 163
Engine switch........................... 130
EPS............................................ 158
Floor mat .................................. 238
Fluid
Washer.................................. 269
Fog lights
Replacing light bulbs ............. 292
Switch ................................... 152
Wattage................................. 354
Front fog lights
Replacing light bulbs ............. 292
Switch ................................... 153Wattage ................................ 354
Front passenger’s seat belt
reminder light ........................ 316
Front position lights
Replacing light bulbs............. 292
Switch ................................... 148
Wattage ................................ 354
Front seats
Adjustment .............................. 52
Front turn signal lights
Replacing light bulbs............. 292
Switch ................................... 140
Wattage ................................ 354
Fuel
Capacity ................................ 347
Fuel gauge ............................ 143
Fuel pump shut off system.... 311
Gas station information ......... 368
Information ............................ 355
Refueling................................. 69
Type ...................................... 347
Fuel door .................................... 69
Fuel filler door............................ 69
Fuel pump shut off system ..... 311
Fuses ........................................ 282
Gas station information .......... 368
Gauges ..................................... 143
Hands-free phone system....... 214
Hazard lights
Switch ................................... 304
Head restraints
Adjusting ................................ 57
Headlights
Replacing light bulbs............. 292
Switch ................................... 148
Wattage ................................ 354
Hood ......................................... 254
Horn .......................................... 142
F
G
H

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
W

366
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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...