Yeah, I have done some digging about on the DRBlll but without buying one there seems to be little detailed information on which protocols are used for each vehicle, just which modules are required etc. There also seems to be little info on the MB sites. Hopefully the CAN reader will work and we can go from there.

Even once the OBD port can be interrogated it may still not be possible to actually change settings but I guess you have to start somewhere!

I'll PM you regarding the contact details.

Thanks,
Simon.