2018 TOYOTA YARIS HATCHBACK radiator cap

3607-3. Do-it-yourself maintenance
Engine compartment
Fuse boxes (→P. 391)
Engine oil filler cap (→ P. 362)
Battery ( →P. 367)
Brake fluid reservoir (→ P. 366)
Radiator (→ P. 365)Condenser (
→P. 365)
Electric cooling fan
Engine coolant reservoir (→ P. 364)
Engine oil level dipstick (→ P. 361)
Washer fluid tank ( →P. 369)1
2
3
4
5
6
7
8
9
10

3647-3. Do-it-yourself maintenance
The coolant level is satisfactory if it is between the “FULL” and “LOW”
lines on the reservoir when the engine is cold.Reservoir cap
“FULL” line
“LOW” line
If the level is on or below the
“LOW” line, add coolant up to
the “FULL” 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.
Except Canada
“Toyota Super Long Life Coolant” is a mixture of 50% coolant and 50% deion-
ized water. (Minimum temperature: -31°F [-35°C])
Canada
“Toyota Super Long Life Coolant” is a mixture of 55% coolant and 45% deion-
ized water. (Minimum temperature: -44°F [-42°C])
For more details about coolant, contact your Toyota dealer.
■ If the coolant level drops within a short time of replenishing
Visually check the radiator, hoses, engine coolant reservoir caps, radiator
cap, drain cock and water pump.
If you cannot find a leak, have your Toyota dealer test the cap and check for
leaks in the cooling system.
Engine coolant
1
2
3

3657-3. Do-it-yourself maintenance
7
Maintenance and care
Check the radiator and condenser and clear away any foreign objects.
If any of the above parts is extremel y dirty or you are not sure of their
condition, have your vehicle in spected by your Toyota dealer.
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 stra ight 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.

4538-2. Steps to take in an emergency
8
When trouble arises
If your vehicle overheats
●The high engine coolant temperature warning light ( →P. 422)
comes on or flashes, or a loss of engine power is experienced. (For
example, the vehicle sp eed 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 sufficient ly, inspect the
hoses and radiator core (radia-
tor) for any leaks.
Radiator
Cooling fan
If a large amount of coolant leaks,
immediately contact your Toyota
dealer.
The coolant level is satisfactory
if it is between the “FULL” and
“LOW” lines on the reservoir.Reservoir
“FULL”
“LOW”
Radiator cap
The following may indicate that your vehicle is overheating.
Correction procedures
1
2
3
1
2
4
1
2
3
4

4558-2. Steps to take in an emergency
8
When trouble arises
WARNING
■To prevent an accident or injury 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 while the engine is operating.
● Do not loosen the radiator cap or the reservoir cap while the engine and\
radiator are hot.
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.

516Alphabetical index
Radiator .................................... 365
Radio
*...................................... 245
Rear seat .................................. 109 Folding down the rear
seatbacks ........................... 109
Rear side marker lights ........... 156 Light switch ........................... 156
Replacing light bulbs............. 404
Wattage ................................ 470
Rear turn signal lights............. 154
Replacing light bulbs............. 404
Turn signal lever ................... 154
Wattage ................................ 470
Rear view mirror Inside rear view mirror .......... 118
Outside rear view mirrors...... 120
Rear view monitor ................... 205
Rear window defogger ............ 322
Rear window wiper .................. 165
Refueling .................................. 168 Capacity ................................ 464
Fuel types ............................. 464
Opening the fuel tank cap ..... 170
Replacing Fuses .................................... 391
Light bulbs ............................ 396
Tires ...................................... 433
Wireless remote control
battery ................................ 388
Resetting the maintenance required reminder light ......... 348 Seat belt reminder light .......... 425
Seat belts ................................... 28
Automatic locking retractor (ALR) .................................... 31
Child restra int system
installation ............................ 59
Cleaning and maintaining
the seat belt........................ 345
Emergency Locking Retractor (ELR) .................................... 31
How to wear your seat belt ..... 28
How your child should wear the seat belt.......................... 31
Pregnant women, proper seat belt use ......................... 33
Reminder light and buzzer.... 425
Seat belt pretensioners........... 31
SRS warning light ................. 423
Seat heaters ............................. 326
Seats ................................. 106, 109
Adjustment............................ 106
Adjustment precautions ........ 108
Child seats/child restraint system installation ................ 57
Cleaning ............................... 344
Folding down the rear
seatbacks ........................... 109
Head restraints ..................... 113
Properly sitting in the seat ...... 26
Sensor Automatic High Beam ........... 196
LDA
(Lane Departure Alert) ....... 191
PCS
(Pre-Collision system) ........ 177
RS