What happens when you first turn on the key?
Does the led blink several times, stop blinking, and then several
seconds later start blinking again? If so, try the following.

The coolant level sensor in the main coolant tank can fail or get a
coating on the probes that makes it act like the tank level is low.

The 2 wires to the coolant level sensor in the main coolant tank can get
an internal break near the tank or the contacts that plug into the tank
can corrode or get dirty.

Mark

Kevin Gilbert wrote:
> 1984 Westfalia 1.9l A/T
>
> Vanguards,
>
> A bit of help, please.
>
> Since replacing the steel coolant pipes beneath in August, I can't ged rid of the blinking red light. (Silver lining is I did discover broken sway bar link - now fixed)
>
> It began halfway into a 12-mile drive, but now blinks constantly.
>
> So, I thought, I'll evacuate an air pocket, and all will be fine. Thus far I've followed Bentley instructions, the raised rear-end bong, and front-end siphon and refill. I disconnected the two radiator hoses and did multiple clean water flush and drains. The radiator seems to flow as it should.
>
> What incredibly obvious solution am I overlooking?
>
> tia
>
> Kevin
>