I just bought my 07 Vantage and I LOVE IT. As time goes on, I keep finding more and more buttons and switches that I have no clue of what they do. My Vantage did not come with a manual and I have had seemingly great luck with simple google searches about buttons. However, Ive discovered another switch located at the drivers right knee location. Can one of you guys let me know if this is a factory switch and what it may do? I have attached a picture. Thanks in advance.

 

That's the passenger eject button. You need to disable the passenger airbag before ejection. Sorry I couldn't help myself.

Has your car had any aftermarket radio upgrades? I have a similar button that was installed with the upgrade. My button turns on/off the bluetooth while disabling/abling the cigarette lighter.

Congrats on the new car. I recommend spending some time looking at the videos on Redpants.

 

first, not factory...
perhaps trace wiring to see where it goes...

 

Maybe an exhaust valve bypass switch.

 

Or laser jammer. Look for some receivers attached near the outside edges of the grill and possibly the rear license plate