It will work fine as Eddie says, the functions are the same on all the mk5 panels they are just actioned in different ways, as standard the older aircon panels go into dual (both temperatures operated by driver dial) when you hold the auto button down and move to seperate zones when the passenger dial is adjusted, the dual button doesnt replace Econ it replaces the blank on the older units. The later ones also have the AC button instead of ECON which obviously has the opposite function switching on the compressor rather than switching it off.