My AUX connection was working fine, but the car battery has just had to be replaced and since then it has stopped working. After the battery was replaced I had to put in the radio code but that was fine and the radio and CD player are working fine. But not the AUX.
I tried a different phone, still the same problem. And I got a new AUX cable, also still the same problem. I do get a very faint sound through the speakers with the phone volume turned right up.