I found this MB site and thought others here may be interested too. Apologies if you aready know about it ;)
I posted this link on another forum in reponse to a member's question. This is a link to a series of user's manuals and installation instructions for Scorpion alarms fitted to older Mercedes models. Most of these alarms were fitted by the supplying MB dealer so the installations varied...
I've been looking at my data storage... and I'm not happy with what I do... it's all sync'ed and backed up within multiple hard drives in my house.
I used to use Mozy (and before that, Carbonite) for backups - but never really liked them as recovery took ages for files of any substantial...
I came across this series of articles on telegraph.co.uk dated from 2006, giving the song and dance how poor dealer service is a thing of the past yada-yada-yada.
I suggest you start with this one:
Quality time - Telegraph
Then continue with this:
Catch a falling star - Telegraph