Hi Everyone - hoping you can help; I have a E220d AMG line, which when I would activate full beam used to have what I would call a 'curtain effect', as in the lights would activate in full beam from in to out on the road, in a kind of opening effect that looked great - however of late (following a recent service), they just come on as any other car would, straight away... has anyone experienced this and is there a way to get the effect back? thank you!