Jim Smith and cbdo.
Thanks, for lengthy writeup.
My temp is great, 84 C in local traffic.
When I stop at light and move, I feel lots of Fan air, like I am pressing more gas. But in reality it is only runnung at 2k rpm.
I let the car cool, than started, fan is turning and it is engaged. Like cbdo said earlier, howling wind sound...
I hope I am explaining it right, please tell me what should I do, so I can report here afterwards.
I like the fan running, it keeps the eng. temp lower, however, I want Mercedes to be in perfect condition.