Hmmm. Hard to know what to suggest next. You have a car with an unknown diagnostic system and a diagnostic system that has never talked to your car. Could be one problem, could be two (or more).

The only way to isolate where the issue lies is to have at least one known-good car or diagnostic system and proceed from there. Prove that either the car is faulty (although BMW say it's not) or that the diagnostics system isn't working.

__________________
Wayne
2005 BMW X5 3.0d (b 02/05)
2001 BMW F650GS Dakar (b 06/01)