2014 TOYOTA IQ cooling

312
5-2. Steps to take in an emergency
If your vehicle overheats
Correction proceduresStop the vehicle in a safe place and turn off the air condition-
ing system, 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 your Scion
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.
● The high engine coolant te mperature warning light (P. 278)
comes on or flashes, or a loss of engine power is experienced.
(For example, the vehicl e speed does not increase.)
● Steam comes out from under the hood.

5
When trouble arises
313
5-2. Steps to take in an emergency
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 operates and to check for
coolant leaks from the radiator or hoses.
The fan operates 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 temperatures.)
If the fan is not operating: Stop the engine immediately a nd contact your Scion dealer.
If the fan is operating: Have the vehicle inspected at the nearest Scion dealer.
CAUTION
■ To prevent an accident or injury when inspecting under the hood of
your vehicle
●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, caus-
ing serious injuries such as burns.
● 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 and the coolant reservoir cap while the
engine and radiator are hot.
Serious injury, such as burns, may result from hot coolant and steam
released under pressure.

314 5-2. Steps to take in an emergency
NOTICE
■When adding engine coolant
Wait until the engine has cooled down before adding engine coolant.
When adding coolant, do so slowly. 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 commercially available coolant additives.

324 6-1. Specifications
The 0W portion of the oil viscosity rating indicates the characteristic of the
oil which allows cold startability. Oils with a lower value before the W allow
for easier starting of the engine in cold weather.
The 20 in 0W-20 indicates the oil viscosity when the oil is at its operating
temperature. An oil with a higher viscosity may be better suited if the vehi-
cle is operated at high speeds, or under extreme load conditions.
How to read oil container label:
The ILSAC (International Lubricant Standardization and Approval
Committee) Certification Mark is added to some oil containers to help
you select the oil you should use.
Cooling system
Capacity
(Reference) 5.2 qt. (4.9 L, 4.3 Imp.qt.)
Coolant typeUse 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 technology
Do not use plain water alone.

364 Alphabetical index
CareExterior .................................. 184
Interior ................................... 187
Seat belts .............................. 188
Cargo capacity ......................... 146
Chains ....................................... 152
Child restraint system Booster seats, definition ..........87
Booster seats, installation .......92
Convertible seats, definition ....87
Convertible seats,
installation .............................92
Front passenger occupant classification system .............81
Infant seat, definition ...............87
Infant seats, installation...........92
Installing CRS with LATCH system ..................................94
Installing CRS with seat belts ......................................95
Installing CRS with top tether straps ..........................99
Child safety
Airbag precautions ..................76
Battery precautions ....... 219, 311
Child restraint syst em..............87
How your child should wear the seat belt ..........................46
Installing child restraints ..........92
Power window lock switch.......55
Power window precautions .....57
Removed key battery
precautions ......................... 242
Seat belt extender precautions ...........................48
Seat belt precautions ..............47 Cleaning
Exterior.................................. 184
Interior ................................... 187
Seat belts .............................. 188
Clock ......................... 121, 126, 130
Condenser ................................ 216
Cooling system Engine overheating ............... 312
CRS ............................................. 87
Cup holders .............................. 172
Curtain shield airbags ............... 67
Customizable features ............ 343
Daytime running light system .................................... 134
Defogger
Rear window ................. 164, 165
Side mirrors........................... 165
Dimension ................................ 320
Do-it-yourself maintenance .... 196
Doors Back door ................................ 33
Door glasses ........................... 55
Door lock ................................ 30
Side doors ............................... 30
Side mirrors............................. 52
Warning light ......................... 280
Driver’s seat belt reminder
light ......................................... 280
Driving Break-in tips .......................... 106
Correct posture ....................... 65
Procedures............................ 104
Winter driving tips ................. 151C
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