Don''t let them tell you they have to flash the computer to get it to work... It's just a simple "enable" that the technician can do with the diagnostic tool... takes about a minute to do, and that includes driving it into the service bay.
Took me about six months before I was able to get past three different service managers at two different stealers & ask the *******'s diesel tech directly if he knew how to do it. "Sure, no problem", he said.
Pitiful that the stealers don't know squat about their own product...