We have had the diesel for almost 2 weeks, and from day one have noticed a plastic vibration or buzz seemingly emanating from the left of the dash cluster to the left AC duct.
Of course this vehicle was unaffected by the TSB regarding the metal bracket on the steering column.
Anyway, in the below pic you can see some wiring connectors and when I manipulated these "wire bundles" I could reproduce the sound, though I really couldn't determine exactly what the plastic "connectors" were vibrating against.
So, I ended up twisting/repositioning some of the components without putting too much stress on anything and the vibration is 100% GONE!!!!
Please note the photo is taken just to the left of the visible OBD2 port.