2010 Vantage. What is this? It looks like the cover was knocked off maybe with foot when getting in. Some type of electrical connection, button, sensor, ?

 

Ejector seat.

 

Press it and see what happens. Could be a number of things. It looks like a momentary button and being hidden is a plus. You could take down the panel and see if the wires are even connected to something if it doesn't work I would remove it incase it's something like a kill switch that could leave you stranded. Perhaps it plays the 007 theme music so when you're rolling into valet everyone laughs. Please share if it's something cool and spy like.

 

Not factory whatever it is

 

Would it be an aftermarket alarm trigger…

 

Or open and close the exhaust valves