So I've had my s4 frem new about 15 months and noticed a slight knock at very low speeds through a town centre. I booked in with Audi for them to check and they found it was in need of a new shock absorber under warranty (phew). They ordered the part and it went in yesterday and was going to be done in one day but, half way through the day I get a phone call they need to recalibrate the matrix headlights and front camera system. "Oh and the nearest machine we have to do this is 65 miles away! and we need your permission to drive it over there!" I'm just thinking that how many of these cars will be able to be worked on by any normal mechanic as the car gets older?! I can't see them having this equipment