Originally Posted by JCL

With the E53, no reprogramming is required.

With the E70, the manual cautions that following a vehicle power interuption, dealer reprogramming may be required for the automatic park brake, and the transmission park control. Also, there is a warning regarding the sunroof that the operation may be blocked by a power interuption, requiring dealer intervention. It is enough of an issue to BMW such that there is a removable manual crank to get the sunroof closed if you have to disconnect the battery, and it may rain. Scary stuff.