Cheyenne
UK 2004 T1N 313CDi
Sophia,Doktor A, how much is the diagnostic tool you developed and how to get one?
Doctor A's post you quoted was from TEN years ago!
The DAD units he sold are all now long gone but do occasionally come up for sale second hand, although at a price! Do also note they only work on the older T1N Sprinters, ie pre 2006.
May I suggest you read through some of the other posts under the 'Scanners' section and possibly look at either the iCarSoft MBII or Autel MD802 or newer MD808. These should suffice for most everyday scanning activities on Sprinters.