If Your Vehicle Overheats - Toyota Yaris Owner's Manual

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8-2. Steps to take in an emergency

If your vehicle overheats

The following may indicate that your vehicle is overheating:
 The high engine coolant temperature warning light (P. 406)
comes on or flashes, or a loss of engine power is experienced. (For
example, the vehicle speed does not increase.)
 Steam comes out from under the hood.
Correction procedures
1
Stop the vehicle in a safe place and turn off the air conditioning sys-
tem, and then stop the engine.
2
If you see steam:
Carefully lift the hood after the steam subsides.
If you do not see steam:
Carefully lift the hood.
3
After the engine has cooled down sufficiently, inspect the hoses and
radiator core (radiator) for any leaks.
 Gasoline engine
1
Radiator
2
Cooling fan
If a large amount of coolant leaks, immediately contact any authorized Toy-
ota dealer or repairer, or another duly qualified and equipped professional.
 Diesel engine
1
Radiator
2
Cooling fan