Just a few days ago, there are weird noises under the car, like when springs go bad, also a clicking sound on passenger side when I increase the speed, not the idle. when I hit the brakes it also makes some sort of swishing noise, any help would be appreciated. Thanks
Brake noise
From what you have said, it sounds like it is time to have the brakes checked. Although Mercedes cars have the brake wear warning light on the dash, sometimes things go wrong and the warning light does not come on. The fact that the sound changes when you apply the brakes indicates that there may be something loose or the brake pads may be near the end of their uesful life.