I've got a brand new Hyundai Elantra Touring and it has an auxiliary usb port for the stereo. It says it can control the ipod using the usb. I hooked up my jailbroken 2G touch using the factory ipod cable and I got an error on the stereo that its not compatible. I hooked up my kids nano and it works just fine. I restored the ipod to stock and it still didn't work. I just upgraded the firmware to 3.0 and still no good. I can't seem to find any info or fixes for this.... The stereo also has the 3.5mm jack input for the stereo, but I want to control the ipod as well.