What would be the cause of a slight noise like a fan hitting radiator blades on 2005 Mercedes-Benz S430 4MATIC

When I start up a hill it is worse than otherwise but it is there when I take off

Asked by for the 2005 Mercedes-Benz S430 4MATIC
1 answer
poss weak or bad motor mounts,motor is lifting and fan could be hitting fan shroud