Welcome to BenzWorld!
Please take the time to read the "Sticky" posts, especially the Encyclopedia of information on W220 chassis. The "Sticky" posts are at the top of the W220 forum threads list.
Also, please take some time, as you are new, to fill out your user profile with the following information.
1.) Specific model, and model year, of your car
2.) Whether or not it's a 4Matic
3.) Your general location in the world (country is fine)
We ask you to do this because MB offered certain options only on certain models, during certain years, in certain countries, and we do have an international membership here.
Regarding your question, it is of course welcome here (please do the above two requested things, though!). However, given how old this thread is (the last post was 10 years ago), you are unlikely to get a response from any of the thread participants. It's best to start a new thread and ask your question. For that reason, I'll go ahead and close this old thread, but again, do start a new thread to ask your question...after doing the above mentioned things, of course.
Again, welcome to BenzWorld!