[dmurray14]

Originally Posted by lesliew

This maybe of interest

This circuit board is a similar concept to that described by nik49 back in post 740. It interrupts the CAN bus and makes the navigation option available.

http://www.codecard.lt/dash/bmw-cic-.../prod_432.html

Good find! Looks interesting. I see the two CAN transceivers on there (black boxes on the left) - so I'm sure you're right - it's probably just modifying the VIN CAN packets to make the CIC happy. Although I wonder what the implications are of this - for things like Assist maybe? Although I think emergency calls identify the vehicle by the VIN stored in the TCU itself - hopefully.