Hazard Warning Circuit Fault - A6 Avant 2002

[V Mad]

I have this intemittent fault where, I am not even in the car and the hazard warning lights all come on but do not flash. They will not go out and the hazard lights and indicators will not flash.

I changed the hazard switch, and this was OK for about 4 weeks then it happened again.

Do I have two duff switches or is something else causing it? I dont have a wiring diagram so I cant try to check out the circuit.