Noisy Cooling Fan
I've just bought a 2012 C63 Estate and I absolutely love it. I took it for a drive this evening, and spent about 20 minutes or so driving it quite hard. The oil temp sat around 111, and the water at 92 (celsius), which I've heard is normal. However the cooling fans seemed to be absolutely howling (I had a Lexus RC F before), and there's an electrical type-buzzing noise whilst they run. Is this normal? If not, what could be causing it?
Thanks in advance.









