2017 TOYOTA AYGO radiator cap

3317-3. Do-it-yourself maintenance
7
Maintenance and care
AYGO_OM_Europe_OM99Q24E
Engine compartment
1KR engine
Engine oil filler cap
( P. 334)
Fuse box ( P. 357)
Battery ( P. 338)
Engine coolant reservoir
( P. 336)
Radiator ( P. 338)
Electric cooling fan
Condenser ( P. 338)
Engine oil level dipstick
( P. 333)
Washer fluid tank ( P. 342)
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3327-3. Do-it-yourself maintenance
AYGO_OM_Europe_OM99Q24E
HM01 engine
Engine coolant reservoir
( P. 336)
Engine oil filler cap
( P. 334)
Fuse box ( P. 357)
Battery ( P. 338)
Radiator ( P. 338)
Electric cooling fan
Condenser ( P. 338)
Engine oil level dipstick
( P. 333)
Washer fluid tank ( P. 342)
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3377-3. Do-it-yourself maintenance
7
Maintenance and care
AYGO_OM_Europe_OM99Q24E
HM01 engine
Reservoir cap
“MAX” line
“MIN” line
If the level is on or below the “MIN”
line, add coolant up to the “MAX”
line.
■ Coolant selection
1KR engine
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])
HM01 engine
Only use “Toyota Genuine Premium Long Life Coolant 2WZ-TV” or a similar
high quality ethylene glycol based non-s ilicate, non-amine, non-nitrite, and
non-borate coolant with long-life hybrid organic acid technology.
“Toyota Genuine Premium Long Life C oolant 2WZ-TV” is a mixture of 50%
coolant and 50% deionized water. (Minimum temperature: -38 C [-36F])
For more details about 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.
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WARNING
■ When the engine is hot
Do not remove the radiator cap (1KR engine) or the engine coolant reser-
voir cap (HM01 engine).
The cooling system may be under pressure and may spray hot coolant if the
cap is removed, causing serious injuries, such as burns.

4378-2. Steps to take in an emergency
8
When trouble arises
AYGO_OM_Europe_OM99Q24E
The coolant level is satisfactory if it is between the “FULL”, “F” or
“MAX” and “LOW” or “MIN” lines on the reservoir.
Radiator cap
Reservoir
“FULL” or “F”
“LOW”
Reservoir
“MAX”
“MIN”
1KR engine (type A)1KR engine (type B)
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HM01 engine
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4398-2. Steps to take in an emergency
8
When trouble arises
AYGO_OM_Europe_OM99Q24E
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 (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.

473Alphabetical index
AYGO_OM_Europe_OM99Q24E
Paddle shift switches .............. 164
Parking brake ........................... 171
Operation .............................. 171
Parking brake engaged
warning buzzer ................... 389
PCS (Pre-Crash Safety
system) ................................... 192
Function ................................ 192
PCS switch............................ 195
Warning light ......................... 392
Power outlet ............................. 314
Power steering (Electric
Power Steering system)........ 223
Warning light ......................... 391
Power windows ........................ 137
Pre-Crash Safety system
(PCS)....................................... 192
Function ................................ 192
PCS switch............................ 195
Warning light ......................... 392
Radiator .................................... 338
Radio......................................... 240
Radio data system ................... 242
RDS ........................................... 242
Rear fog lights ......................... 176
Replacing light bulbs............. 371
Switch ................................... 176
Wattage ................................ 456
Rear seat .................................. 129
Folding down the rear
seatbacks ........................... 129
Head restraints ..................... 131
Rear turn signal lights............. 170
Replacing light bulbs............. 371
Turn signal lever ................... 170
Wattage ................................ 456
Rear view mirror
Inside rear view mirror .......... 134
Outside rear view mirrors...... 135
Rear view monitor system*
Rear window defogger .... 292, 298
Rear window wiper .................. 180
Refueling .................................. 182
Capacity ................................ 446
Fuel types ..................... 182, 446
Opening the fuel tank cap ..... 184
Replacing
Electronic key battery ........... 354
Fuses .................................... 357
Light bulbs ............................ 365
Tires .............................. 399, 412
Wireless remote control
battery ................................ 354
PR
*: For vehicles with a multimedia system , refer to “Multimedia owner’s manual”.