BMW 540i 2002 model - kal
Hello a friend runs a BMW 540i 2002 model, the car suffers from a cooling system fault. The check cooling system light comes on once a month, a half a litre of water is sufficient to top up and the warning light goes out. Is thier a problem or not? The car has only covered 40,000 km, the car is run in the middle east where the ambient temperature is 30-40c for most of the year. The car generally runs well, no misfires, offers strong acceleration etc etc. I have not noticed any leaks etc

any replies appreciated..