Hi, I've been having issues with doors not locking properly for a while, sometimes passenger side sliding door, then it started with the tailgate, now the drivers side door is showing that its open on the dash constantly and won't lock at all using the button in the van or thd fob. If I manually lock the doors it will open via the fob button and it will open and close with the key ok. The other issues stopped after a while I'm wondering if it's more than the individual locks/micro switches? It's a 16 plate shuttle se 150 dsg. Any thoughts?