Oh! I have that as well! Thought it was an oddity with my car. Took it back to my dealer and pulled my usual line ("I've just spend a ridiculous amount of money on a top model car with you so you can sort it out pronto"). If its the same noise as I've got, try something... If you get into the passenger side, and put your hands round the back of the dash - by this I mean if you go to the left hand side of the console, all the way back under the glove box, right to where the plastic ends, and apply pressure on it, can you replicate it? (Hope that makes sense!!!) Well - that's what was causing mine apparently, something was loose round there.......