I've been a long time lurker now a first time poster.
My 2011 X5 E70 35D started making this strange sound when decelerating. The vehicle feels like the brakes are being tapped and applying the brakes doesn't change the sound or feel.
Here's a short video of it.
https://www.dropbox.com/s/gazbv3z8kl...200_1.mp4?dl=0
There are no CELs or codes. Recently tuned and deleted.
Any help would be appreciated.
EDIT: Used Foxwell Nt510 and got the following codes: A0B3 CF37 5DCF 6EC4 55C3 55D0
I am leaning towards the transfer case actuator motor gears.