A little while ago I replaced a front parking sensor with a unit from A8 Parts. Then, a couple of weeks later, I started to get an intermittent fault where the front sensor sound would come on continuously when the car was put into reverse. Had it VagCom'd at A4 Audi and they found nothing.
But it became more frequent and, assuming that the continuous sound of the front sensors meant a front sensor fault, I ordered a front sensor, had it painted up at A4 Audi and went to get it fitted. Then the VagCom said it was 2
rear sensors that were faulty! £49 for a front sensor I didn't need.
Back the following week to get 2 rear sensors fitted.

And the rear ones are more expensive - why?
All fine for a few days......then the same bloody fault started again!
I see more of Andy at A4 Audi than I do of my wife - anyone know what's going on?