Have had my 2014 Jeep Grand Cherokee Overland for a little over a month now and love it so far. I ordered without a a CD player and use the SD Card. A few weeks ago I prepared the SD Card, have about 600 songs on it and it has worked like a charm and really I like the feature. Today, I get in the vehicle, hadn't used the SD card in a few days and turn the radio to that feature and nothing. The system recognized the number of songs but I couldn't tune to a song or play a song and couldn't "browse" for anything on the SD card. No Media Available displayed every now and then on the screen. Needless to say, took out SD Card, put in the SD card, took out SD Card, vehicle off then back on etc. and still nothing. Right now the Jeep has been sitting off in the garage and I am going to go and try again. I put the SD card in my laptop and it played the songs no problems. Any thoughts or another gremlin?