2002 S3 BAM. I had a recent issue where the ABS and ESP lights would stay on. Used my ebay version of VAGCOM and it came up with the right rear ABS sensor. My mate has a garage and he also read the same error on his Snapon setup, replaced the sensor and cleared the fault. The lights didnt return.
But whenever I am slowing down (either braking or just coasting) and the speed is between 5 to 10 MPH (maybe a little less) I can hear an electrical buzz that sounds like a relay operating rapidly and it changes in speed in relation to me slowing down. This sound was present before I had the sensor replaced but I just didnt notice it as much. Nothing comes up on VAGCOM.
This morning I got in the car to go to work and the buzzing was still there when slowing down. When hitting the first roundabout the ESP flashed on a few times and I lost power to the engine a little, so I turned around and came home (I am lucky as I can work from home).
I have done a search but couldn't find anything around the buzzing sound. Could anyone please help with any of the above? Much appreciated, although I am sure my wallet is goin gto take a kicking with this...