Also in the book.When the coolant temperature is higher than 120C (248F), the display flickers and the indicator light comes on. Further, if the temperature exceeds 140C (284F), the display blinks "HI" and the indicator light remains on.
Running the Engine with high engine coolant temperature can cause serious engine damage. If the engine coolant temperature indicates more than 120C (248F) and the indicator light comes on, stop the engine and let it cool.
Do not run the engine until the coolant temperature indicates less than 120C (248F)