It’s not hard to set up. Put the car on the jack and remove the wheel. Find the hinge and press it with your fingers, changing the position of the steering wheel. If it shrinks and there is play, then the part needs to be replaced. If it does need to be replaced, you will find great options for your Mercedes at https://mercteil.com/mercedes-benz-steering-wheels .
A wide free play of the steering wheel, as well as unusual noises when turning, is a sign of problems with the hinges. Deviation from the selected line of travel as well as from the specified turning radius may indicate that the joint has collapsed or the lugs are worn out.