Thanks for the response Gareth.
It's interesting you mentioned the battery. Last time I had it in to the garage where I bought it from for this issue, the technician did say that he couldn't get any error codes off the car as the warning lights had gone off.
However he did ask if the battery had been changed or removed as the system LG was saying that it had been.
I will definately get it checked and then post here.
Cheers again