Chosen Solution

Have a Volkswagen Golf 2003 model. How to reset the radio? Have some errors I believe can be solved with a reset.. The problem is, I use the up-down buttons and switch radio station with nothing happens .. Antenna is replaced it must be the radio

Hi, take of the ground wire from the battery for about two minutes, then put it back on. This should do a reset not only to the radio, but to the whole CAN-Bus system as well.