Anyone know the full details of Campaign 23AX?   2015 1.6 TDI DSG and from 2nd March, it has this campaign against it. It is an emissions-related campaign which is to do with the catalyst (they told me) reducing in effectiveness as the vehicle ages, resulting in increased emissions. So this is a software fix in the engine control module which they promise me, won't effect fuel economy!! Yeah, right!   Anyone know anything about it?   Thanks   Nick