S-Type (X200, X202, X204, X206) 1999 - 2008
Speaking to my stepfather, he told me he had an electrical glitch on his s type.
He was told to disconnect the battery terminals, and clamp them together for three hours, and then reconnect them.
He had to do this three times, but then the problem went away.
Seems a bit weird to me, but he says...