Toyota 2009 Yaris Hatchback Owner's Manual page 153

2-2. Instrument cluster
NOTICE
n To prevent damage to the engine and its components
Do not let the indicator needle of the tachometer enter the red zone, which
l
indicates the maximum engine speed.
The engine may be overheating if the high engine coolant temperature
l
warning light comes on. In this case, immediately stop the vehicle in a safe
place, and check the engine after it has cooled completely. (
140
→
P. 337)