Re: iPhone 4S won't connect to 130S/RES through USB Port but iPhone 5S will?
Got the problem solved...I feel kind of foolish.
The USB cable was the issue. The dealership was correct the USB port was functioning properly. I purchased an Apple iPhone USB charging cable and it started working instantly.
The cable I was using was purchased from Target....I think it was a Belkin. But that cable charged my phone fine when plugged into the wall, so I am not sure what caused the issue but I guess if your phone isn't connecting to your stereo...just try another cable before anything.