The stow box on the left of the steering wheel was not included on my MY2013 35i, and I have the storage package. I also have the Driver's Assist package, which has lane departure and collision detection. Both of those options are able to be switched on/off via buttons on the left of the steering wheel where that stow box is supposed to be located. Best guess on my part is the Drivers Assist package on/off buttons over-rode that slot for the stow box.
Currently: 2013 X3 xDrive35i - Deep Sea Blue / Nevada Black, ZAP, ZDA, ZDH, ZPP, ZPS, ZTP, Heated Seats, Cargo Net