I have a 2006 Audi S4. The issues it’s having are: the traction control light is stuck on, nothing on the steering column works (volume knob, Horn, blinkers, windshield wipers, the power windows don’t work. And the radio and dash lights stay on whenever I turn off the car, causing a drain on the battery.
My suspicion is the ecu went bad and needs a reflash or replacement, if not bad wires somewhere. Any insight to this issue would be great!