Complete kit for upgrading the original Auto Hold (Hill Hold) / Hill Start Assist system for Audi TT 8S maximum starting comfort for your vehicle With the Auto Hold function you extend the electronic parking brake When stationary or when starting off, unintentional rolling is prevented without you having to brake, because Auto Hold records the last brake pressure when you previously braked to a stop. When Auto Hold is activated, the green P icon lights up on the speedometer Hill start assist prevents unintentional rolling backwards or stalling of the engine when starting on a hill Scope of delivery: Button for center console Cable set Coding dongle