not the outer most plastic lens, but the shiny chrome piece the goes right in front of the bulb. it fell off, and now is loose in the foglight area. i've seen this on a XF i looked into buying. is this a common problem? what's the easiest way to put it back on. i replaced my fog light bulbs a few weeks ago and it was fine, and i notices it was loose rolling around yesterday. i know of the small door inside the wheel well, for the fog lights, but can't reach the loose part, and definitely won't be able to put it back on that way. any easy way to do it?