coolant TOYOTA AYGO 2019 (in English) User Guide

3667-3. Do-it-yourself maintenance
AYGO_OM_Europe_OM99R19E
Check the radiator and condenser and clear away any foreign objects.
If either of the above parts is extremely dirty or you are not sure of
their condition, have your vehicle inspected by any authorized Toyota
retailer or Toyota authorized repairer, or any reliable repairer.
WARNING
■ 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.
Radiator and condenser
WARNING
■ When the engine is hot
Do not touch the radiator or condenser as they may be hot and cause seri-
ous injuries, such as burns.

4158-2. Steps to take in an emergency
8
When trouble arises
AYGO_OM_Europe_OM99R19E
If you think something is wrong
●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
● Changes in exhaust sound
● Excessive tire squeal when cornering
● Strange noises related to the suspension system
● Pinging or other noises related to the engine
● 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
If you notice any of the following symptoms, your vehicle proba-
bly needs adjustment or repair. Contact any authorized Toyota
retailer or Toyota authorized repairer, or any reliable repairer as
soon as possible.
Visible symptoms
Audible symptoms
Operational symptoms

4178-2. Steps to take in an emergency
8
When trouble arises
AYGO_OM_Europe_OM99R19E
If a warning light turns on or a warning
buzzer sounds
Calmly perform the following actions if any of the warning lights
comes on or flashes. If a light comes on or flashes, but then
goes off, this does not necessarily indicate a malfunction in the
system. However, if this continues to occur, have the vehicle
inspected by any authorized Toyota retailer or Toyota authorized
repairer, or any reliable repairer.
Warning light and warning buzzer list
Warning lightWarning light/Details/Actions
Brake system warning light (warning buzzer)*1
Indicates that:
• The brake fluid level is low; or
• The brake system is malfunctioning
 Immediately stop the vehicle in a safe place and con-
tact any authorized Toyota retailer or Toyota autho-
rized repairer, or any reliable repairer. Continuing to
drive the vehicle may be dangerous.
Charging system warning light
Indicates a malfunction in the vehicle’s charging system
 Immediately stop the vehicle in a safe place and con-
tact any authorized Toyota retailer or Toyota autho-
rized repairer, or any reliable repairer.
Low engine oil pressure warning light
Indicates that the engine oil pressure is too low.
 Immediately stop the vehicle in a safe place and con-
tact any authorized Toyota retailer or Toyota autho-
rized repairer, or any reliable repairer.
(Flashes or comes on)
High engine coolant temperature warning light
Indicates that the engine is overheating.
As the coolant temperature rise, it changes from flashing
to comes on.
 P. 465

4658-2. Steps to take in an emergency
8
When trouble arises
AYGO_OM_Europe_OM99R19E
If your vehicle overheats
●The high engine coolant temperature warning light (P. 417) comes
on or flashes, or a loss of engine power is experienced. (For exam-
ple, 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 (radia-
tor) for any leaks.
Radiator
Cooling fan
If a large amount of coolant
leaks, immediately contact any
authorized Toyota retailer or
Toyota authorized repairer, or
any reliable repairer.
The following may indicate that your vehicle is overheating.
Correction procedures
1
2

4668-2. Steps to take in an emergency
AYGO_OM_Europe_OM99R19E
The coolant level is satisfactory if it is between the “FULL” or “F”
and “LOW” lines on the reservoir.
Radiator cap
Reservoir
“FULL” or “F”
“LOW”
Add coolant if necessary.
Water can be used in an emer-
gency if coolant is unavailable.
Start the engine and turn the air conditioning system on to check
that the radiator cooling fan operate and to check for coolant leaks
from the radiator or hoses.
The fan operate when the air conditioning system is turned on immediately
after a cold start. Confirm that the fan is operating by checking the fan
sound and air flow. If it is difficult to check these, turn the air conditioning
system on and off repeatedly. (The fan may not operate in freezing tem-
peratures.)
Ty pe ATy pe B
1
2
3
4

4678-2. Steps to take in an emergency
8
When trouble arises
AYGO_OM_Europe_OM99R19E
If the fan is not operating:
Stop the engine immediately and contact any authorized Toyota
retailer or Toyota authorized repairer, or any reliable repairer.
If the fan is operating:
Have the vehicle inspected at the nearest any authorized Toyota
retailer or Toyota authorized repairer, or any reliable repairer.
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 fan 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 while the engine and radiator are hot. High
temperature steam or coolant 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.

4779-1. Specifications
9
Vehicle specifications
AYGO_OM_Europe_OM99R19E
*: The identification code is indicated
at the locations shown in the illus-
tration.
Cooling system
Capacity
(Reference)
0Q011,
0Q021*3.7 L (3.9 qt., 3.3 Imp.qt.)
0Q090*4.4 L (4.6 qt., 3.9 Imp.qt.)
Coolant type
Use either of the following:
• “Toyota Super Long Life Coolant”
• Similar high-quality ethylene glycol-based non-
silicate, non-amine, non- nitrite, and non-borate
coolant with long-life hybrid organic acid tech-
nology
Do not use plain water alone.
On the back side

495Alphabetical index
AYGO_OM_Europe_OM99R19E
Emergency brake signal ......... 247
Emergency flashers................. 406
Emergency tire puncture
repair kit ................................. 427
Engine
“ACC” position....................... 182
Accessory mode ................... 187
Compartment ........................ 361
Engine switch ................ 182, 185
Hood ..................................... 358
How to start
the engine................... 182, 185
If the engine will not start ...... 455
Ignition switch
(engine switch) ........... 182, 185
Overheating .......................... 465
Engine coolant ......................... 365
Capacity ................................ 477
Checking ............................... 365
Preparing and checking
before winter....................... 253
Engine coolant
temperature
warning light .......................... 417
Engine immobilizer system ...... 76
Engine oil.................................. 362
Capacity ................................ 474
Checking ............................... 362
Preparing and checking
before winter....................... 253
Engine switch
(ignition switch) ............. 182, 185
EPS (Electronic Power
Steering) ................................. 247
Function ................................ 247
Warning light ......................... 419
Flat tire
Vehicles with a spare tire ...... 442
Vehicles without
a spare tire ......................... 427
Floor mats .................................. 26
Fluid
Brake .................................... 480
Washer ................................. 370
Fog lights ................................. 203
Replacing light bulbs..... 397, 400
Switch ................................... 203
Wattage ................................ 482
Follow me home system ......... 201
Front position lights ................ 199
Light switch ........................... 199
Replacing light bulbs............. 403
Front seats ............................... 152
Adjustment ............................ 152
Cleaning................................ 350
Correct driving posture ........... 28
Seat heaters ......................... 332
Front turn signal lights ........... 197
Replacing light bulbs............. 397
Turn signal lever ................... 197
Wattage ................................ 482
Fuel ........................................... 474
Capacity ................................ 474
Fuel gauge ............................ 101
Fuel pump shut off system.... 416
Information ............................ 483
Refueling............................... 209
Type .............................. 209, 474
Warning light ......................... 422
Fuel filler door.......................... 211
Refueling............................... 209
Fuel pump shut off system ..... 416
Fuses ........................................ 386
F

503Alphabetical index
AYGO_OM_Europe_OM99R19E
Warning lights .......................... 417
ABS ....................................... 419
Brake system ........................ 417
Charging system ................... 417
Electric power steering.......... 419
High engine coolant
temperature ........................ 417
LDA
(Lane Departure Alert) ....... 421
Low engine oil pressure ........ 417
Low fuel level ........................ 422
Malfunction indicator lamp .... 419
Multi-mode manual
transmission warning
light ..................................... 418
Open door ............................. 421
PCS (Pre-Collision
system) .............................. 420
Seat belt reminder light ......... 421
Slip indicator light .................. 421
Smart entry & start
system ........................ 421, 425
Speed limiter ......................... 420
SRS....................................... 419
“STOP” warning light............. 418
Stop & Start cancel
indicator .............................. 420
Tire pressure ......................... 422
Washer.............................. 205, 207
Checking ............................... 370
Preparing and checking
before winter....................... 253
Switch ........................... 205, 207
Washing and waxing ............... 346
Weights..................................... 472
Wheels ...................................... 380
Replacing wheels.................. 380
Size ....................................... 480
Window glasses....................... 163
Windows ................................... 163
Power windows ..................... 163
Rear window
defogger ..................... 322, 328
Windshield wipers ................... 205
Winter driving tips ................... 253
Wireless remote control key... 110
Locking/Unlocking......... 119, 123
Replacing the battery ............ 383
*: For vehicles with a multimedia system , refer to “Multimedia owner’s manual”.