Continue to hold the esp button down for a few seconds until the dash board lights up that ASR is also off.
1 OF 1 IN THE UNITED STATES - 2015 A6 TDI Prestige with 19" Sports Package with Season Dedicated Tires - Oolong Gray Metalic, Nougat Brown Interior, Dark Brown Walnut Inlays, Black Headliner, Driver Assistance Package, Cold Weather Package, Night Vision Assistant with Pedestrian Detection. XPEL Ultimate. Summer Tires - Michelin Pilot Super Sport. Winter Tires - Michelin Pilot Alpin PA4, Eurocode Sway Bars and Links
RIP - 2005 A6 4.2 - (February 2005 - August 2014) (142,000 miles)
C6 TSB Library link (Thanks to Dr. Cold for his help in setting this up) http://uberlame.com/a6_tsb/