See also:

BMW X6: rear seats
The head restraints in the rear cannot be adjusted and cannot be removed. ...

Activating/deactivating the limit
1. "Settings" 2. "Speed" 3. "Warning" ...

Removing and inserting
Cargo cover without partition net: Removing The cover can be removed to load bulky luggage. Reach under the cover and turn it upward, arrows. Pull the cover back horizontally. Cargo cover ...