Toyota 2009 Tacoma User Manual page 150

2-2. Gauges and meters
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 engine coolant temperature gauge is
l
in the red zone (H). In this case, immediately stop the vehicle in a safe
place, and check the engine after it has cooled completely. (
152
→
P. 456)