Rear
In the center armrest.

Pull the center armrest forward at the strap.
To open: press the button.
To close: push both covers back in, one after the other.
Pushing back the covers
Push back the covers before folding up the center armrest; otherwise, the cupholder could become damaged.
See also:
BMW X6: rear seats
The head restraints in the rear cannot be adjusted
and cannot be removed. ...
Transmission positions
D Drive, automatic position
Position for normal vehicle operation. All forward
gears are available.
Under normal operating conditions, fuel consumption
is lowest when you are driving in position ...
Note
If equipped with Business mobile phone preparation
equipment package or without mobile
phone preparation. ...
