I have been following this thread with great interest. So what you're saying is that the new iDrive controller (with individual buttons) will work with the old (07 to LCI) iDrive system? Do I need to purchase a new wiring harness to mate the new controller to the old system or will the existing harness be fine. Thanks for your informative input so far.
2007 E92 6MT - Silverstone II with /// Performance Exhaust with ACM Test Pipes and BPM Sport Stage II Dev-Tune - Proper engine warm up, 12-monthly oil change, Castrol TWS 10w-60
2014 F15 X5 3.0d