Hi I have a 2001 S320. It has been standing and the battery needed to be replaced. The RAC turned up and jump started it. I put a new battery in. Bosch £102. I drove it round the block and the instrument lights flickered and went out. The rev counter does not work. It starts easily but the head lights come on when in the off position. If I put the head lights on and pull out the fog light switch the headlights go off. It is ver frustrating ! Can anyone help please.

Mark