2018 TOYOTA YARIS radiator cap

4377-3. Do-it-yourself maintenance
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Maintenance and care
YARIS_HV_OM_Europe_OM52J66E
Engine compartment
Fuse boxes (P. 481)
Engine oil filler cap
( P. 439)
Engine coolant radiator cap
Power control unit coolant res-
ervoir ( P. 441)
Engine coolant reservoir
( P. 441)
Engine/power control unit
coolant radiator ( P. 443)
Electric cooling fan
Condenser ( P. 443)
Engine oil level dipstick
( P. 438)
Washer fluid tank ( P. 443)
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4427-3. Do-it-yourself maintenance
YARIS_HV_OM_Europe_OM52J66E
■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% deion-
ized water. (Minimum temperature: -35°C [-31°F])
For more details about coolant, contact any authorized Toyota retailer or
Toyota authorized repairer, or any reliable repairer.
■ If the coolant level drops within a short time of replenishing
Visually check the radiator, hoses, engine/power control unit coolant reservoir
caps, 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.
WARNING
■ When the hybrid system is hot
Do not remove the engine/power control unit coolant reservoir caps.
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.

5828-2. Steps to take in an emergency
YARIS_HV_OM_Europe_OM52J66E
■If the high engine coolant temperature warning light comes on
or flashes
Stop the vehicle in a safe place and turn off the air conditioning
system, and then stop the hybrid system.
If you see steam:
Carefully lift the hood after the steam subsides.
If you do not see steam:
Carefully lift the hood.
After the hybrid system has
cooled down sufficiently,
inspect the hoses and radia-
tor core (radiator) 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 coolant level is satisfac-
tory if it is between the
“FULL” and “LOW” lines on
the reservoir.
Reservoir
“FULL”
“LOW”
Radiator cap
Correction procedures
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626Alphabetical index
YARIS_HV_OM_Europe_OM52J66E
Personal lights ......................... 399
Switch ................................... 399
Wattage................................. 600
Portable ashtray....................... 408
Power control unit coolant
Capacity ................................ 596
Checking ............................... 441
Preparing and checking
before winter....................... 313
Radiator ................................ 443
Power outlet ............................. 410
Power steering ......................... 303
Warning light ......................... 519
Power switch .................... 216, 220
Auto power off function ......... 225
Changing the power switch
modes................................. 222
If your vehicle has to be
stopped in an emergency ... 507
Starting the hybrid
system ........................ 216, 220
Power windows ........................ 199
Jam protection function ......... 200
Operation .............................. 199
Window lock switch ............... 199
Pre-Crash Safety system
(PCS)....................................... 262
Function ................................ 262
PCS switch............................ 266
Warning light ......................... 519
Warning messages ............... 277
Radiator .................................... 443
Radio*...................................... 326
Radio data system ................... 328
RDS ........................................... 328
Rear fog light ........................... 244
Replacing light bulbs............. 502
Switch ................................... 244
Wattage ................................ 600
Rear passenger’s seat belt
reminder light ........................ 521
Rear seat .................................. 184
Folding down the rear
seatbacks ........................... 184
Rear turn signal lights............. 236
Replacing light bulbs............. 496
Turn signal lever ................... 236
Wattage ................................ 600
Rear view mirror
Inside rear view mirror .......... 193
Outside rear view mirrors...... 196
Rear view monitor*
Rear window defogger ............ 390
Rear window wiper .................. 250
Refueling .................................. 252
Capacity ................................ 592
Fuel types ............................. 592
Opening the fuel tank cap ..... 254
Regenerative braking ................ 88
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