My 2012 Audi doesn't recognize my iphone 6 cable

I recently tried to connect my iPhone 6 to the stereo integration in my 2012 Audi A4 and got a message saying the system doesn't recognize the cable . I'm using the lightning to USB cable and connecting it to a USB adapter that attaches to the car with a pin connector. Can anyone advise me what to do?

Thanks

Cliftone1