The S3 needed an ABS sensor so i took it to the garage. Picked it up later that day and the brakes were all over the place. Sometimes they were spot on then next time i pushed them it was dragging to the right and the time after that it would feel like ABS is stuck on. So i took it back and they've no idea. But now they think its the ABS pump. Is there any chance the pump could have been damaged changing the sensor? Or has anyone else had this problem?