good

I have a Golf2 1.8 GTI 16V.
after the engine heats up a little flashing light from the radiator temperature indicator.
Flashing say one minute, one minute and then stay off ... and so
I did this stage drive another 40,000 miles (since I have)
I sold the boy told me that the LED blinks for contact wires do not do well on the reader at the expansion tank.

if anyone can rectify what about me
Thanks in advance