2015 TOYOTA AYGO coolant temperature

3538-2. Steps to take in an emergency
8
When trouble arises
AYGO_EE_OM99J92E
(Comes on)
High engine coolant temperature warning light (for
HM01 engine)
Indicates that the engine is overheating.
→ P. 398
(Flashes)
“STOP” warning light
Indicates a malfunction in:
• Engine oil pressure is too low; or
• Engine is almost overheating.
→ Immediately stop the vehicle in a safe place and con-
tact any authorized Toyota dealer or repairer, or
another duly qualified and equipped professional.
(Comes on)
Multi-mode manual transmissi on warning light (vehicles
with a multi-mode manual transmission)
Indicates a malfunction in the multi-mode manual trans-
mission system.
→ Have the system checked by any authorized Toyota
dealer or repairer, or another duly qualified and
equipped professional.
Multi-mode manual transmission warning light (warning
buzzer) (vehicles with a multi-mode manual transmis-
sion)
Indicates a malfunction in the multi-mode manual trans-
mission system and that the clutch has become hot due to
excessive load.
→ Pull over and shift the shift lever to N. Wait for about
15 minutes for the clutch to cool down. Have the sys-
tem checked by any authorized Toyota dealer or
repairer, or another duly qualified and equipped pro-
fessional.
(Flashes)
Heat clutch warning light (warning buzzer) (vehicles
with a multi-mode manual transmission)
Indicates that the clutch has become hot, but does not
indicate a malfunction in the multi-mode manual transmis-
sion system.
→ Pull over and shift the shift lever to N. Wait for about
15 minutes for the clutch to cool down.
Warning lightWarning light/Details/Actions

3988-2. Steps to take in an emergency
AYGO_EE_OM99J92E
If your vehicle overheats
●The high engine coolant temperature warning light (→P. 352, 353)
comes on or flashes (1KR engine); comes on (HM01 engine); or a
loss of engine power is experienced. (For example, the vehicle
speed does not increase.)
● Steam comes out from under the hood.
Stop the vehicle in a safe place and turn off the air conditioning sys-
tem, and then stop the engine.
If you see steam:
Carefully lift the hood after the steam subsides.
If you do not see steam:
Carefully lift the hood.
After the engine has cooled down sufficiently, inspect the hoses and
radiator core (radiator) for any leaks.
Radiator
Cooling fans
If a large amount of coolant leaks, immediately contact any authorized
Toyota dealer or repairer, or another duly qualified and equipped profes-
sional.
The following may indicate that your vehicle is overheating.
Correction procedures
1
2
3
X1KR engineXHM01 engine
1
2

4008-2. Steps to take in an emergency
AYGO_EE_OM99J92E
Add coolant if necessary.
Water can be used in an emergency if coolant is unavailable.
Start the engine and turn the air conditioning system on to check
that the radiator cooling fans operate and to check for coolant leaks
from the radiator or hoses.
The fans operate when the air conditioning system is turned on immedi-
ately after a cold start. Confirm that the fans are operating by checking the
fan sound and air flow. If it is difficult to check these, turn the air condition-
ing system on and off repeatedly. (The fans may not operate in freezing
temperatures.)
If the fans are not operating:
Stop the engine immediately and contact any authorized Toyota
dealer or repairer, or another duly qualified and equipped profes-
sional.
If the fans are operating:
Have the vehicle inspected at the nearest any authorized Toyota
dealer or repairer, or another duly qualified and equipped profes-
sional.
5
X1KR engineXHM01 engine
6
7

4018-2. Steps to take in an emergency
8
When trouble arises
AYGO_EE_OM99J92E
WARNING
■ When inspecting under the hood of your vehicle
Observe the following precautions.
Failure to do so may result in serious injury such as burns.
● 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.
● Keep hands and clothing (especially a tie, a scarf or a muffler) away from
the fans and belts. Failure to do so may cause the hands or clothing to be
caught, resulting in serious injury.
● Do not loosen the radiator cap (1KR engine only) and the coolant reservoir
cap while the engine and radiator are hot. High temperature steam or cool-
ant could spray out.
NOTICE
■ When adding engine coolant
Add coolant slowly after the engine has cooled down sufficiently. Adding
cool coolant to a hot engine too quickly can cause damage to the engine.
■ To prevent damage to the cooling system
Observe the following precautions:
● Avoid contaminating the coolant with foreign matter (such as sand or dust,
etc.).
● Do not use any coolant additives.

431Alphabetical index
AYGO_EE_OM99J92E
Engine
“ACC” position....................... 151
Accessory mode ................... 156
Compartment ........................ 296
Engine switch ................ 151, 154
Hood ..................................... 293
How to start
the engine................... 151, 154
If the engine will not start ...... 388
Ignition switch
(engine switch) ........... 151, 154
Overheating .......................... 398
Engine coolant ......................... 301
Capacity ................................ 413
Checking ............................... 301
Preparing and checking
before winter....................... 196
Engine coolant
temperature
warning light .................. 352, 353
Engine immobilizer system ...... 69
Engine oil.................................. 298
Capacity ................................ 408
Checking ............................... 298
Preparing and checking
before winter....................... 196
Engine switch
(ignition switch) ............. 151, 154
EPS (Electronic Power
Steering) ................................. 191
Function ................................ 191
Warning light ......................... 354
Flat tire
Vehicles with a spare tire ...... 361
Vehicles without
a spare tire ......................... 374
Floor mats .................................. 26
Fluid
Brake .................................... 416
Washer ................................. 307
Fog lights ................................. 171
Replacing light bulbs..... 333, 336
Switch ................................... 171
Wattage ................................ 418
Follow me home system ......... 169
Front position lights ................ 167
Light switch ........................... 167
Replacing light bulbs............. 339
Front seats ............................... 123
Adjustment ............................ 123
Cleaning................................ 285
Correct driving posture ........... 28
Seat heaters ......................... 268
Front turn signal lights ........... 165
Replacing light bulbs............. 333
Turn signal lever ................... 165
Wattage ................................ 418
Fuel ........................................... 408
Capacity ................................ 408
Fuel gauge .............................. 83
Fuel pump shut off system.... 351
Information ............................ 419
Refueling............................... 177
Type .............................. 177, 408
Warning light ......................... 355
Fuel filler door.......................... 179
Refueling............................... 177
Fuel pump shut off system ..... 351
Fuses ........................................ 322
F

437Alphabetical index
AYGO_EE_OM99J92E
Towing
Emergency towing ................ 347
Towing eyelet ........................ 347
Trailer towing ........................ 150
Transmission
If the shift lever cannot be
shifted ................................. 390
Manual transmission ............. 163
Multi-mode manual
transmission ....................... 159
Paddle shift switches ............ 160
TRC (Traction Control) ............ 191
Trip information ......................... 85
Trip meters ................................. 85
Turn signal lights ..................... 165
Replacing light
bulbs ................... 333, 336, 339
Turn signal lever ................... 165
Wattage................................. 418
USB port*......................... 211, 219
Vanity mirrors .......................... 277
Vehicle identification
number ................................... 407
Vehicle Stability Control
(VSC)....................................... 191
VSC (Vehicle Stability
Control) .................................. 191
Warning buzzers ...................... 352
Brake system ........................ 352
Downshifting ......................... 161
Electric power steering
system ................................ 354
Key reminder ........................ 114
Open back door .................... 355
Open door ............................. 355
Seat belt remainder .............. 355
Smart entry & start
system ........................ 355, 359
Warning lights.......................... 352
ABS....................................... 354
Brake system ........................ 352
Charging system ................... 352
Electric power steering ......... 354
High engine coolant
temperature ................ 352, 353
Low engine oil pressure ........ 352
Low fuel level ........................ 355
Malfunction indicator lamp .... 354
Multi-mode manual
transmission warning
light..................................... 353
Open door ............................. 355
Seat belt reminder light ......... 355
Slip indicator ......................... 355
Speed limiter ......................... 354
SRS ...................................... 354
Smart entry & start
system ........................ 355, 359
“STOP” warning light ............ 353
Stop & Start cancel
indicator.............................. 354
Tire pressure......................... 356
U
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*: For vehicles with a multimedia system , refer to “Multimedia owner’s manual”.