Recently someone pointed out to me that the external black plastic triangle in the bottom corner of the window of a rear door on my 2009 FD was cracked. It's such a neat vertical crack that at first I thought it was meant to be like that, but of course the triangle on the other side is in one piece, just like on all the other cars I've subsequently looked at. Has this happened to anyone else and if so how? I would also be interested to know the likely cost of replacing (and fitting) the part and possible consequences of leaving it as it is. It doesn't look as if the glass will fall out but even so I'm reluctant to open and close the (electric) window and also wonder if moisture will start to be a problem. In the past, Hyundai have been very good with one or two warranty issues, as it doesn't look to me like impact damage is it possible that this could be covered as well?