I have the three lights on my dash on my Mini Cooper (R53) which from research shows a problem related to the ABS sensor. Over the weekend we plugged it into a machine and sure enough it's the passenger side, front sensor at fault.
I had this about 2 years a go and we replaced the same sensor. The light didn't immediately go out but then for a good year it did (I've read it should be a short drive for the light to go off, in my case it was like 2 weeks!).
Anyway, the lights are back on and apparently it's the same sensor.
The mechanic who tested my car mentioned about a magnetic ring which could also be the problem (or ABS ring?). I'm not very good with cars but a quick Google looks like it's a pretty simple job to replace the ABS sensor but I can't find much about this magnetic ring.
Can any one point me in the direction as to what part they're referring to and where it is located, and how to replacement it if possible?