Your universal joints are shot, get them replaced asap!
sounds like you have a leaky intake manifold
the earth shakes
Usually when the steering wheel shakes badly while driving it could mean a few things. If it shakes only when you are applying the brakes, this means you have warped rotors and they will need to be turned or replaced. If it shakes just while driving, it could be that you have 1 or more tires that are unbalanced. Check this first before proceeding. It can also indicate that a wheel alignment and perhaps steering linkage repairs are necessary.
shakes
Normally an earthquake is first named by the year and then the place: The 1906 San Francisco Earthquake. Sometimes the year is followed by the name of the fault.none
Warped rotors
It must be the rear brakes at fault.
You probably have rusty/scored brake rotors.
You went thru a deep puddle with hot brakes. The disc gets doused in cold water and warps.
depends on when it shakes if it shakes when you put on the brakes-warped rotors otherwise it could be ball joints, steering joints, wheel bearings or even out of balance tires
If the car shakes when you press on the brakes, you probably have warpped brake rotors, and the squeak is probably some worn out front brake pads. I would have your rotors checked and either replaced (which Mercedes highly recommends or re-surfaced)
If the steering wheel shakes, but to car doesn't, when applying brakes - your front rotors are warped (if you have disc brakes)...if you have drum brakes, the drum could be cracked or the pads worn unevenly If the whole car shakes, and the steering wheel only seems to react to that, when applying brakes - see above statement, but apply to the rear end. If the whole car shakes, including the steering wheel - all four corners are bad, and you're an accident looking for a place to happen soon. In any case, go to your nearest service center ASAP.
you might have a router or caliber gone
no
Possibly your wheels need to be aligned or your tires need to be balanced. REPLACE THE STEERING DAMPER
Rotors out of round - need to be re-surfaced or replaced
Your brake rotors are warped.