Hi.... New member here. Just got a 2010 Rapter with Sync and Nav. Got my Droid phone paired up and working. But there is a button on the dash wit a blue LED that I don't know what it does. I pressed it many times and nothing happens but the blue LED flashes. I think it's something aftermarket since I can not find it in the owners manual. Also the truck has remote start. Heres a picture. Thanks for the help.