Reset service light Audi

Find how do you can reset service light or turn off board light maintenance indicator when errors like, oil change, check engine, change interval of inspection, airbag light, inspection key, when maint reqd, appear on board computer display. For Audi car models, Audi 80, Audi 100, Audi A1, Audi A2, Audi A3, Audi A4, Audi A5, Audi A6, Audi A8, Audi Allroad, Audi Q5, Audi Q7, Audi R8, Audi TT .