What would cause my ABS light to ocassionally come on? on 2003 Ford Windstar

My ABS ligh come on and ha done so since I purchased the car new in 2004. At first it was when the brakes got went when it was raining. Now it is of and on. Not only when I am stopping but also when I am driving. The brakes and rotors are in good shape.

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1 answer
It is possible that one of the sensors was never properly set or tightened down or one of the tone rings was defective with a small warp or crack in it right from the start. Need to check to be sure.