@Sophisticated Redneck
Thanks for your advice.
Right now I will tell the technician to change coils and change the Vanos bolts and see if the check engine light and that ENGINE REDUCED POWER goes away.
As I mentioned before, i am just assuming it may be those bolts.
Please see the thread for vanos bolt shearing.
http://www.carproblemzoo.com/bmw/x5/...e-problems.php