Beeping while running..
 

Does anybody know what a fast beeping means??
It´s the same sound as the lights-warning sound but about
twice as fast. It started the other day with irregular beeps
but has now stabilized to a steady beeping.
No warning lights has come on, there´s enough water
in the cooler. Any suggestions would be very appreciated.

How's your power steering fluid level?

is it beeping in any number sequence? such as five beeps pause five beeps pause or?

I have no servo steering in my car, so that cannot be the problem.
(1985 12A)
There´s no pause to the beeps, just a steady LOUD beeping.