ABS WARNING LIGHT

[shearer27]

Any ideas why and what it means when the ABS warning light comes on? I have noticed a couple of times when breaking a vibration under the breaking foot? Is it going to be a costly problem?

[Len]

Possible warped disc.

That could also be causing the ABS sensor to trip out as well.

[monkeyalan]

if the juddering is at slow speed then the ABS light is coming on it will probably be a knackerd sensor. £35 ish

[Len]

Personally I would be more concerned about the cause of the juddering!

Does it pull to one side under braking as well?

[monkeyalan]

thats what happens when the ABS kicks in. i shat myself first time it happened to me cos i thought my brakes were falling apart! 

[V_Arse6]

That's just it telling you the ABS is active.  The juddering you feel is the ABS working - as the others say, if you weren't slamming the anchors on (i.e. hard enough to lock the wheels) at the time then you must have a faulty sensor which is reporting a locking wheel when there isn't one.