South East Events Moderator
If you have had your ABS light on since you bought the car then I would be very surprised if your ABS is working at all to be honest. Even says so in your S3 handbook IIRC. I had a lot of problems with the ABS module a couple of years ago....and the garage I used at the time ended up sending it away to get rebuild. Unfortunately mine was beyond repair though and had to get a new unit installed. Also I'm almost certain that if your ABS light is on whilst it is MOT'd then it would fail.