Love this car plain & simple. About the only gripes I have is that certain options should have been standard on the GT & GXP models (i.e. Fully automated seats, navigation, touchscreen, HVAC controls separate from the head unit, if you want to change out your stereo you will lose the ac / heat controls, speakers are basic paper cheapies, HID's would have been nice, the key fobs break easily)
I had the same issue awhile back & noticed that the ring will only turn on when you set the cabin lights to turn on when the doors are opened. The control switch is right by the switch for the sunroof & the reading lights.