I brought a rns 510 sat nav, and fitted it in and have no sound.
It reads the sd card files, finds all the radio station, reads cd and hdd but no sound at all. I scanned it using vag com and it's saying " speakers short to ground" but when I fit my standard unit, every thing works fine and all speakers work as they should! Spent alt of money and the guy showed me it working in his car but I tried it in my car and no sound