I had a similar problem with my 2004 Mini, which I had just picked up from East Bay Mini. (The driver's side signal light popped out within the first 100 miles making a very frightening noise. I thought a major component somewhere underneath the car had broken loose.) I called EBM and returned there a week later without an appointment. They fixed it while I waited. I was told that they had to fish the missing clip out of the wheelwell and put it back where it belonged. I was at the dealership for about an hour or so.