Problems with the hub bearing
 

I own an 2010 explorer eddie bauer (4.0L, 6 cyls). I bought and installed a non original hub bearing ( front driver side) asy from Auto Zone store ($220) last november 2014. In a couple of days I started to get a warning (Service RSC Now) related to the stability and ABS systems. I went to my Ford dealer and they told me that maybe the hub I installed was not compatible with the sensor asy or the sensor was damaged. So, they put a new original Ford sensor and problem solved. Exactly a month later I started to get the same warning about the RSC, not all the time but frequently. So, I don't know if I need to installed an original Ford hub bearing asy (part no. 7L2Z-1104-A, cost:$460 plus installation!) or maybe the new sensor is damaged again. When I hit the break I feel a vibration, like the ABS system is activated, then 30 secs later, I get the warning again.