I posted the question here as those who are adding a TCU need to be aware of all the issues BMW has had with the past parts... hence my comment about the 45+ SIB's which exist since 2003. Perhaps a list of these bulletins would be more value for the thread.

I was actually hoping you or kiwijochen would have an answer!

__________________
2010 X5 3.5d: SOLD, but miss the torque...
2004 X5 4.4i: SOLD, but served us well