How to locate your radio serial

Most radio serial numbers are found on the radio’s label located on radio’s metal casing. In some circumstances, such as Ford, Honda & Audi Navigation Systems, for Ford & Honda radio systems the serial can be obtained by pressing and holding buttons “1” & “6”, or “2” & “6” on the radio head unit.
This will display the radio serial number on the head units display, for Audi RNS-E Navigation systems, serial number is sometimes visible below the code entry display screen.