I don't know what Freightliner uses, but many people use a Scangauge II. It is basically an OBDII scan tool, but seems to be capable of reading more of your Sprinter codes than many of the generic OBDII scan tools. The best prices I've seen for them seem to be when J.C. Whitney has a percentage off deal with free shipping. Other than that the prices seem pretty consistent.
From what I've learned the problem with OBDII scanners and the Sprinter is that diesel engines are not required to meet the OBDII protocols. They'll read some generic codes, but are not as specific with information as a DRBIII unit using the Sprinter specific card and cable.
I've had pretty good luck getting information from my 2004 just using my Actron CP9175 OBD2 Autoscanner.
Here's a reply they sent after I asked about compatibility with the Sprinter.
This is the answer from Actron.
The CP9175 performs a global request for codes. Some diesel vehicles and vehicles over 8500 lbs GVWR are exempt from certain OBD II regulations and may require a tool with Enhanced capabilities. Unfortunately, we do not have Chrysler diesel or Mercedes specific (enhanced) support.
Fri Jul 17, 2009 2:48 pm
--- In email@example.com, "abittenbinder" <abittenbinder@...> wrote:
> Freightliner once used the MBenz DAS to communicate with Sprinters. Ever since Dodge came on board Freightliner was then issued DRBIIIs. Doktor A
> --- In firstname.lastname@example.org, "wbk" <wbk891@> wrote:
> > Is the same true for the Freightliner as I have a 2007(2006Sprinter Chassis) RS Adventurous, that I would need a DRB-III or something else?
> > wbk
> > > --- In email@example.com, "abittenbinder" <abittenbinder@> wrote:
> > > >
> > > > Star Scan or StarMobile are not applicable AT ALL- on pre-'07
> > > > Sprinters. Those devices are strictly for Chrysler products using
> > > > CAN based diagnostics. The '02-'06 Sprinters utilize K-line
> > > > diagnostics. Doktor A
> > >
PS: I have no experience with the software, but his might interest a few NAFTA T1N owners (comfortable with open source *nix operating systems/environments). VMware Server is free (in terms of money, not individual learning curve) and handy for experiments that you don't want to trash your Windows PC.