i'm trying to advise the mechanics who are currently investigating the fault,but haven't actually taken it apart to look into.
I'm hoping its just dirt/rust on the sensor itself as it seems that this VSC light can be caused by a whole variety of issues.
It used to make the whining noise when applying the brake at slow speeds,one day this stopped altogether and now the VSC light stays on,the VSC button which used to turn it off or on,doesn't do anything now.