[DJ_BigC]

If the light did not go away after doing the relearn, the relearn was not performed properly.

I know it seemed really straight forward but when or if the light comes back on, make sure the car is in park, car not moving, hold the button down for a couple of seconds after the window is rolled all the way down and the roll the window back up and also hold the button for a couple seconds when its all the way up and that should do the trick.

If this is what you did and it did not relearn, you have a problem with a module or component and you should get it diagnosed to prevent you windows from losing their relearn and being stuck half way open or closed, to prevent a costly water damage etc...

These car can lose their window learn from day to day sometimes, dont ask my why they just do.