Locking confirmation via horn not working? 2009 8pa 1.9tdi

[Shubz8p]

Hi all, I’ve got a weird one. My locking confirmation via horn doesn’t work, the option is enabled properly on the dash but it just doesn’t want to work. It hasn’t worked since I got the car (February) but I do really want this feature haha.

I’ve seen a few things about coding it in via vcds, but since this option is already displayed in my dash I shouldn’t need to bother with that right?

The possible clues I have is my alarm siren doesn’t work (has been replaced in an attempt to fix it, but since the confirmation is via horn it shouldnt affect it?) and the rear doors have that age old vag problem where they dont open from the outside after unlocking the car, but opening from the inside and then shutting the door will allow you to open it from the outside until the next time you lock it.

Really hoping someone can hit the nail with this one!