W124 260E noise on rear

[optimusprime]

I do help on the forum as much as i can . But to-day , i am in need of a little information.If anyone can help .The weather in my area is like Spain .So to drive the car with windows on the car down .Driving along i can hear a creek from the lefthand side passengers rear suspension .I can make the noise show up if i push down on the bumper .I think the multi link layout on the rear. Now is there a quick fix for it .Just passed mot so i dont think its play in the bushes .