I just got a 2014 Volkswagen Jetta 1.8T SE, and so far I've had no problems with the car itself. When I have the radio playing, there isn't any problems with it, but when I have my phone plugged into the aux cord, the bass sounds really bad. I've tried everything to get this to go away. It sounds really scratchy and if I have the volume turned up loud, it sounds worse. I've tried turning the bass down on my car and it doesnt change anything. This is only when I have my phone plugged into the aux cord.
Can someone tell me what's wrong with it?