Just purchased a 2014 A Class and have been told by the Mercedes dealer that I can ‘upgrade’ the system so we have navigation??? I’m a bit suspicious of this and wondered if anyone can help. When you press the Nav button you get the message ‘No Navigation Module Connected’..... is it as simple as buying a disc off EBay or is it more complicated? I’ve seen people talk about Becker equipment in glove boxes but there is nothing in ours.... any help is appreciated even if it’s the NO that I’m expecting...