Noise / longlife service

Hello, have asked 2 times. When I start a KLARZende sound comes every time from the front and only when starting, where does it come from? is an A3 3,2 DSG. The second question refers to the Longlife service. You can have the remaining time displayed in the instrument cluster to the next inspection, where the time is displayed, when I find it a “zero”. Hasn’t an interval been set for me by the factory or does something not work? 5000 km down. Fries Bart