Thanks found the relay. Looks like someone has been there by the previous owner. I wondered what the plastic tray with broken clips was that I found in the glove compartment, turned out to be the headlight control module carrier. Module is taped up to secure by whoever fiddle around before.
With no way of testing if the module is working or been replaced. Am I right in what I've researched that replacing this module. Does it need coding to the car? I feel a trip to Audi coming on for a diagnosis and a hefty fee. Just want a little understanding of the problem before I get in for a repair... thanks for advice Phil