Spent a little time on this one this afternoon looking at the central locking coding.
The A8 is set to 15210.
So if I add +16 it does indeed reverse the locking so the Lock button locks and the unlock button unlocks.
But...
This is still the wrong way round for the car, by this I mean when you unlock the Alarm goes on and when you lock the interior lights turn on.
So had a look at the S8 for reference and that's 15179 which makes sense as its got the boot opening and locking via speed set differently.
Interesting stuff, I wonder if the pipes on the pump have been put round the wrong way at some point.
That can be tomorrows job
