JUSTANSWER IS AN HONOR SYSTEM AND THE ACCEPT BUTTON MUST BE PRESSED TO CREDIT YOUR EXPERT
EVEN IF YOU ARE ON A SUBSCRIPTION WITH UNLIMITED QUESTIONS YOU MUST STILL PRESS ACCEPT
Before reading my answer below, please note that you must press the green ACCEPT button in order for me to receive credit for my time and effort. Thank you.
This is a failure of your valvetronic system. There are several things that can cause this.
BMW will need to carry out the repair as several thousand dollars worth of tools are required to work on this system. You cannot fix this yourself.
I hope that is helpful, please let me know if you have further questions, or if I can clarify anything for you.
It has been my pleasure to help today and I wish you the best of luck with the vehicle.
If satisfied with my assistance, please press the green "ACCEPT" button so that I may be credited for helping today. I am not credited or compensated whatsoever until you press the green ACCEPT button.
>>>>>PLEASE DO NOT FORGET TO PRESS ACCEPT <<<<<
thank you in advance.