well I didn't know what it was, so I removed it. no harm done.
But if its meant to be there. leave it.
I havent had any problems because of it
Maybe it has a date code or something on it
'92 300CE - Sold
2004 C240 - C7 Wheels
2015 ML350 - P1, Pano, Ash poplar wood, Sport Dinamica interior, Running Boards Keyless go.