can someone help with obtaining my radio codes for 2006 a4 avant usa? Audi is not helping, they say i switched the radio, i did not and bought the car brand new. they never gave me the codes. they did charge me to find the codes, but then said it does not work and i need to shell out 2K for a new nav-sat. image of unit top attached. vin isWAUKH78E56A167819 can someone help? thanks