If the previous owner lost the card and you cannot find the serial number by holding "SCAN" + "EJECT":
, the radio's anti-theft system has been triggered. Here is how to navigate it: how to reset vw volkswagen rcd 300 radio top
: Turn the ignition to the "Accessory" position. Press and hold the Power/Volume button for approximately 10 to 20 seconds until the screen goes blank and then reboots. If the previous owner lost the card and