Aargghh, another huddle to jump-

according to this link (post #10
Coding a 2006 750Li with Progman - Bimmerfest - BMW Forums), the clear DME RAM in v57 DIS/GT1 is located within the oil disturbed test plan...
Functions->Service functions->Maintenance->CBS reset->CBS functionality, engine oil, disturbed.
The problem is that my DIS does not have the "Maintenance" option in Service Functions

I have DIS v44 and v57. Looked everywhere for it and can't find it. Damn!