Engine Coolant Temperature Gauge - Lexus LFA Owner's Manual

Engine coolant temperature gauge

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The engine coolant temperature gauge displays the coolant temperature between
100 and 265°F (40 and 130°C). When the coolant temperature exceeds 244°F
(118°C), a buzzer will sound and the bar display will blink in red and white to inform
the driver of abnormally high coolant temperatures.
During high-speed driving: approximately 176
to 194°F (80 to 90°C)
Idling: approximately 203°F (95°C)
[Outside air temperature approximately 68°F
(20°C)]
Each bank of cylinders has its own engine coolant temperature sensor. The ECU
calculates the engine coolant temperature from both of these sensors and informs the
driver using the engine coolant temperature gauge.
Blinks when temperature exceeds
60
244°F (118°C)