Toyota 2013 Yaris Owner's Manual page 349

5-2. 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. 306)
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.
Follow the correction procedure as described below.
Stop the vehicle in a safe place and turn off the air condi-
tioning 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.
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After the engine has cooled
down sufficiently, inspect the
hoses and radiator core (radi-
ator) for any leaks.
Radiator
Cooling fan
If a large amount of coolant
leaks, immediately
your Toyota dealer.
The coolant level is satisfac-
tory if it is between the "FULL"
and "LOW" lines on the reser-
voir.
Reservoir
"FULL" line
"LOW" line
contact