To get your VW RNS-510 serial number, firs you need to remove the radio from the dashboard.
You need a Phillips head or flathead screwdriver to do this. The serial is located on the radio label on the top or side of the unit.
In some cases it will be engraved into the radios casing.
There are online guides and video tutorials on You Tube that can help with the removal of the radio.
When the radio has been taken out, the serial number is printed on the sticker-label.
For example, in the image the serial number is "VWZ1Z7G7404503".
If the label is damaged or unclear, above the label the serial number is also compressed into the metal casing.
All Volkswagen Navigation serial numbers begin "VWZ" and is a total of 14 numbers and letters.