Adamd12

Hi guys, new on here and having some issues with my 2011 edge sel awd. My service advance trac light came on a couple weeks ago. I assumed that it was a wheel speed sensor so I replaced all 4 if them when I recently replaced my pads and rotors. However the warning is still on and I can not figure out why and now my awd is turned off. What else could be causing this problem and how can I fix it.