If you can go and take another look at the car at look at what version of the software is showing in the Infotainment System. If it starts 17 or 18 then it is the newer hardware 16 and it is the older version. Also on the diver's door pillar there is a sticker which shows the VIN and also the month/year of manufacture. If it shows 11/20 then it will be down to luck if it is pre or post wk48, but the software version will help you there