ABS light comes on after making hard left or right turns.

What is your question?

When I'm driving everything is ok but when I make a sharp turn right or left the ABS light comes on and the 4x4 light also flickers on and off. but then when I drive a little longer the ABS light extinguishes out like nothing ever happened but its when I make sharp turns. Could it be low fluid or does this vehicle have a ABS resovoir.