in your owners manual.
If you don't have one links to online manuals on w210 forum in the diy section for most models 2000 and up.
ohlord

 

I used the information to enter my assist plus system, it worked great but I had to hit the back button first. My question is what do the 3 oil type options represent. It apears that I must select one in order to move forward.

Thanks,

Ed

 

turn key to position one. Heres the trick, maintenence counter must not be on cluster but milage must be at bottom. now hold down call accept button and within 5 seconds hold down ok button. this will open screen needed to read and erase service items.

 

How to reset c serves on 2007 s550 please help. Thanks