U-OBD on X: "Audi electronic power steering control unit J500 module usually seen fault Code: C10AD29, B200049, C10ACF0, especially when your AUDI A4 Q5 A6 A7 A8 drive on on waterlogged farmland,
ECU Depot - AUDI A4, Q5, A6, A7,A8 Electronic power...
259 ephs – electrically powered hydraulic steering | PDF
AUDI C7 B8 A6 A7 A8 Q5 A4 electronic power steering J500 EPS Repairing test platform