Usually the rear ones are permanently on though, and you'd want to disable them (Button would be labelled OFF like the traction control one next to it), if you were towing something for example?
Well it is on by default but a button labelled exactly the same as that turns it off and pressing it again will turn it back on.
A[L]C;13897364 said:erm whats a PDC?
A[L]C;13897217 said:Well thats what I thought, but there doesnt seem to be. They wouldnt have fitted the button if it didnt do anything would they?