That usually means it's broken.... ;-)

It helps if you say what kind of vehicle and it's mileage and age.
There are different things to look for on a newer vs older vehicles.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)

Terry Draycott wrote:
>
> Can anyone advise why my ABS light should suddenly illuminate and what I
> need do
>
> Many Thanks