I’ll be interested what sort of response you get on this one, as I have a similar problem with my mk4 system where the screen is blank put does energise from off to show a dark screen. All the other functions appear to work with regards to the Radio, tape CD and phone, unsure whether the Nav side is running but I imagine it is. Just can’t see any display to allow me to navigate through the options, I’ll be putting it into BMW at some point but just typical its three months out of warranty! Whether its connected at all, the battery has been under charge recently but with the engine running there shouldn’t be any reason why the screen won’t display?

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