Righty ho then. Since my last update, I have bought the V5 Ibus interface and, along with your wonderful Navcoder software, successfully coded my MK4 computer to my car. However, even though I have performed this action my TMC function is still not working as it should. Two of my brothers have almost identical E39 540i's and both have TMC working bringing them the message lists, which I am still missing.

Every other function is properly working with my Nav system except for the TMC. Before I got the Ibus interface it did come back for just 5 minutes but that was a very short lived visit.