I have a 2010 G37S Convertible 6MT. I found a part recently while working on my car that I cannot figure out where it goes. It's a trim piece that looks like it would cover a screw, etc. It's roughly 1" x 1" and on the back has the following markings:

>ABS+PA< LH
183M-A2400

I have googled the letters, but nothing comes up. The LH usually indicated that it is for the left-hand side, but I don't see any missing pieces in the car anywhere. Does anyone know where this piece goes?

 

side view mirror bolt cover? underside