Pertaining to my '87 Westfalia:

Whilst driving through downtown San Francisco today, my coolant light
began flashing and stayed flashing until I reached my destination.
Driving was stop and go, ambient temp was maybe in the 70s - 80s, my fan
cycled on and off as usual, and my temp needle never went above its
usual, maximum "just above the LED" position. Everything was normal,
except for the LED flashing. No signs of coolant coming out anywhere or
any steam.

Upon my return trip home, the coolant LED stayed off. The coolant level
in my overflow tank is just below the lower mark, so I may simply need
to add coolant.

I guess I'm just asking if the blinking LED is a low coolant reminder in
addition to being a high temperature indicator. Or does this circuit
sometimes act up?

Thanking you in advance...

Dan