To remove your VW radio requires the use of a screwdriver after removing the plastic trim from the dash unscrew all four screws and the radio will pull forwards. Alternatively older radios are taken out with the aid of radio release keys, These PIN's are pressed into each corner of the radio the keys can be purchased from Amazon. There are online guides and video tutorials on You Tube that can help with the removal of the radio.
There are different types of Volkswagen radio labels and sometimes identifying the correct information can cause issues. It is quite simple to find the your serial number it will start "VWZ" an example is "VWZ1Z2H1234567" ensuring your VW serial is correct is essential in retrieving the correct code for your radio.
IF your car radio is a Volkswagen navigation system, it will have the number "7" on the 6th digit of your serial number also, your serial will have a serial similar to this example "VWZ1Z7H1234567". If your Volkswagen radio is a navigation system these can be purchased here.