No, the original purpose of the LED was to get the driver's attention
when the coolant TEMP went too high. Later it was also connected to a
level sensor in the coolant tank. From then on it served both functions.

Mark

Dylan Friedman wrote:
>
> Hello All,
> I've been watching this heater discussion and wanted to clarify the purpose of the LED on the coolant temp. gauge.  It has been my understanding that the LED would blink when the coolant level in the expansion tank was low, not when the temp. was high.  Just curious.
>
> dylan