> I had an ABS light after changing wheel bearings. VAG system showed left front
> with a low reading compared to the other three wheels until it reached ten mph.
>
> Turned out that the ABS sensor had been bumped so that it had twisted about 15
> degrees out spec. I twisted it back straight and the problem was fixed.

I watched the guys doing the job, friendly local garage, so I'm sure
there was no damage.
It was purely wheel off, wheel on again. I will check though if all
else fails, thanks.