Originally Posted by davidr

My understanding is that you need two things coded: first, you need the central personality of the car extending to include option SA620 (VR), second you may/may not need the VR activated in the ULF (only MIS SES modules include hardware and software for VR).

Central coding defines the localisation of the car (language, options etc) and includes car and key memory settings. Euro X3's spec'd with with BT but not VR from the factory have VR SA620 disabled centrally - this cannot be enabled through a retrofit update (yet) but instead requires a recoding of the central settings. Most dealers I talk to want stupid money to do this central recoding work.

Annoyingly, cars spec'd without any BT comms and all US cars do not seem to have VR disabled, hence a full BT/VR retrofit to these vehicles appears to automatically enable the VR as well as BT.

VR SA620 is the only option I can think of that does not require any physical parts for the retrofit. If you have a recent ULF you have all the hardware and software already. Might explain why BMW are not too keen on developing a software retrofit program that dealers could charge 30 minutes labour for when the factory VR option costs £275.