[Vojno]

The mileage stored in  BMS-EB2 and KOMB03.

If he bought a new unit then ISTA+ can coded and write a mileage in the new KOMBI!

Thank you, I suspected that was the case.

He also changed the BMS-EB2 using a secondhand part, complete with lock and keys.  The original lock had been damaged and keys were not present.   He has kept the original BMS-EB2 and it will be supplied with the bike if I decide to purchase.

So I guess I have three possible options.

1.  Replace the original BMS-EB2, order a lock and matching keys from BMW dealer.  Then code in the new KOMBI.

2.  Keep the secondhand BMS-EB2 and code the KOMBI.  But the KOMBI then inherits the mileage of the previous bike and the VIN stored in the BMS-EB2 will not match the VIN on the bike frame?

3.  Purchase a brand new BMS-EB2 from dealer, and a lock and key set.  Then code it all in and the bike would show delivery mileage?

Are there any other options I could consider?  Is it possible to change the VIN on the BMS-EB2 and would ISTA detect that the BMS-EB2 has been tampered with if I do so?

The clean solution would be if the owner were to order a new ignition key with keys based on VIN from BMW and then can use the original BMS and the new kombi!
Of course, KOBI must be coded for it.