As the vehicle hits normal bumbs on the road there's a squeeky sound that resembles an old squeeky bed spring in motion.
Squeeky noise(squeeky bed spring)coming from the left wheel area when driving on 2003 Mercedes-Benz S600
Same issue when I put mine in sport mode. Yesterday the drivers side of my car started drooping and then a pressurized hose from my power steering pump busted. I recommend having both your ABC system and lines looked at as well as your power steering system. I replace my control arms, tie rods, and radius rods to no avail.