Hey guys, As the title says, on the way to work this morning (7.30), i was driving on the M1 and my A3 completely cut out on me. Brakes went stiff... Couldn't turn the wheels... I'm surprised i managed to get it to the hard shoulder if im being honest! After waiting hours for the AA, finally managed to get it towed home. I mechanic had a look at the car and hooked it up to his computer, it displayed "Power Supply Relay for ECU (J271 or J363) Electrical Malfunction" as en error. Does anyone know what this error message means? Or experienced this before? How did you resolve? Car spec: 56reg A3 2.0TDI 170bhp S-Line DSG Any advice/help is appreciated. Thanks.