key fob not recognized

Hey, all. I'm still rolling my '09 3.8 with high miles (about 165k). Bought in '12 and have taken all up and down the east coast with minimal maintenance. Until a few months ago she was the perfect car. Then my problems started after a long road trip. Stopped for gas and then she wouldn't start...

I have about 30K miles on my 3.8. And have had 6 or 7 occurrences during the past two years where the engine won't turn over when pressing the start button. The message on the dash screen reads "Key Not Detected" anyone aware of this problem???

New owner of a 2015 3.8 HTrac Ultimate Genny So I go out to my car this morning. The mirrors don't fold open. I push the button to unlock the doors, nothing. Try using the buttons on the FOB, nothing. Try using the key on the trunk manually, set the alarm off, no clue how to get it to open...