u/s0naldo7

Using a rental/hire car in Spain. Drove about 100km to hotel from airport and was fine. Drove this morning was fine. Then this evening when I turned engine on warning light came on saying coolant level low. Stopped the car, turned it back on and the light disappeared! Then it came on later driving down a hill.

I can’t really tell but level looks far below the min line? How could this happen so fast? Why is it intermittent? Any help much appreciated