coolant level TOYOTA AYGO 2021 Owners Manual

3867-2. Maintenance
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■ 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 monoxide
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,
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
retailer or Toyota authorized repairer, or any reliable repairer as soon as pos-
sible. Your vehicle may need adjustment or repair.
WARNING
■ If your vehicle is not properly maintained
Improper maintenance could result in serious damage to the vehicle and
possible death or serious injury.
■ Handling of the battery
Battery posts, terminals and related accessories contain lead and lead com-
pounds which are known to cause brain damage. Wash your hands after
handling. ( P. 399)

3877-3. Do-it-yourself maintenance
7
Maintenance and care
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Do-it-yourself service precautions
If you perform maintenance by yourself, be sure to follow the
correct procedure as given in these sections.
ItemsParts and tools
Battery condition
(P. 399)•Warm water• Baking soda•Grease
• Conventional wrench (for terminal clamp bolts)
Engine coolant
level (P. 397)
• “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 pre-mixed with
50% coolant and 50% deionized water.
• Funnel (used only for adding coolant)
Engine oil level
(P. 394)• “Toyota Genuine Motor Oil” or equivalent
• Rag or paper towel
• Funnel (used only for adding engine oil)
Fuses (P. 4 1 8 )• Fuse with same amperage rating as original
Light bulbs
(P. 426)
• Bulb with same number and wattage rating as origi-
nal
• Phillips-head screwdriver
• Flathead screwdriver•Wrench
Radiator and
condenser
(P. 398)

Tire inflation
pressure
(P. 410)• Tire pressure gauge
• Compressed air source
Washer fluid
(P. 402)• Water or washer fluid containing antifreeze (for win-
ter use)
• Funnel (used only for adding water or washer fluid)

3937-3. Do-it-yourself maintenance
7
Maintenance and care
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Engine compartment
Engine oil filler cap
(P. 395)
Fuse box (P. 418)
Battery (P. 399)
Engine coolant reservoir
(P. 397)Radiator (P. 398)
Electric cooling fan
Condenser (P. 398)
Engine oil level dipstick
(P. 394)
Washer fluid tank (P. 402)1
2
3
4
5
6
7
8
9

3977-3. Do-it-yourself maintenance
7
Maintenance and care
AYGO_OM_Europe_OM9A012E
The coolant level is satisfactory if it is between the “FULL” or “F” and
“LOW” lines on the reservoir when the engine is cold.
Ty pe A
Reservoir cap
“FULL” line
“LOW” line
If the level is on or below the
“LOW” line, add coolant up to the
“FULL” line.
Ty pe B
Reservoir cap
“F” line
“LOW” line
If the level is on or below the
“LOW” line, add coolant up to the
“F” line.
■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 coolant, contact any authorized Toyota retailer or Toy-
ota authorized repairer, or any reliable repairer.
■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 retailer or Toyota autho-
rized repairer, or any reliable repairer, test the cap and check for leaks in the
cooling system.
Engine coolant
1
2
3
1
2
3

4478-2. Steps to take in an emergency
8
When trouble arises
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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

5058-2. Steps to take in an emergency
8
When trouble arises
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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

542Alphabetical index
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Warning lights .......................... 449
ABS ....................................... 451
Brake system ........................ 449
Charging system ................... 449
Electric power steering.......... 451
High engine coolant
temperature ........................ 450
LDA
(Lane Departure Alert) ....... 453
Low engine oil pressure ........ 449
Low fuel level ........................ 454
Malfunction indicator lamp .... 451
Multi-mode manual
transmission warning
light ..................................... 450
Open door ............................. 453
PCS (Pre-Collision
system) .............................. 452
Seat belt reminder light ......... 453
Slip indicator light .................. 453
Smart entry & start
system ........................ 453, 457
Speed limiter ......................... 452
SRS....................................... 451
“STOP” warning light............. 450
Stop & Start cancel
indicator .............................. 452
Tire pressure ......................... 454Washer.............................. 237, 239
Checking ............................... 402
Preparing and checking
before winter....................... 285
Switch ........................... 237, 239
Washing and waxing ............... 378
Weights..................................... 510
Wheels ...................................... 412
Replacing wheels.................. 412
Size ....................................... 518
Window glasses....................... 194
Windows ................................... 194
Power windows ..................... 194
Rear window
defogger ..................... 354, 360
Windshield wipers ................... 237
Winter driving tips ................... 285
Wireless remote control key... 112
Locking/Unlocking......... 133, 137
Replacing the battery ............ 415