On my wife's T plate 1.8 petrol A3, the ABS light had been on for the last 10 months, come MOT time the garage diagnosed the front right sensor and replaced it, light now goes off. But on starting off from standstill after 2-3 meters there is a strange noise, like a metallic sneezing coming fron the front left of the car... I took it back to the garage, if the sensor is disconnected, the noise disappears, they suggested it comes from the ABS pump and the car may need to Audi. Has anybody encountered this, and how can I solve it? Many thanks!