I took the X6 in for its MOT this morning along with a brake fluid change which the car has been nagging about for a few weeks (reminder incorrectly set by the Dealer last time). Nothing else showed on the Servicing menu in the system, however when I got to the Dealer they said it needs a 'Major Service' as well.
That was not recorded by the iDrive but was on the key memory!
So beware, you might have been expecting a simple fluid service only to find the car has been keeping secrets from you!! It's like having an unfaithful partner.....

I'm assuming the E70 may play the same games as the systems are basically the same.
Richard