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can you please describe what symptoms you have labelled as a "complete lockdown" and also what you have tried (everything possible - what does this entail?)
I'm pleased to inform you that I've now sorted the problem out. It was
as i suspected a flat battery which I was able to recharge via the
connections in the engine compartment.I must read the handbook
more thoroughly in future but in this instance it was in the glove compartment which was one of the items locked down. Sods law!!!