I bought my daughter a 2010 Escape 4wd. It had bad front wheel bearings I replaced those a few weeks ago. I now have notice that the 4wd does not work at all. No noise, no lights. I have scanned it with forscan, no codes. The speed sensors all read the same speed. According to forscan it appears to be sending a 4wd signal. I can see the driveline turns. I cannot not turn the drive line by hand when parked .. Any idea’s?? The only thing I can come up with is the rear diff might be bad.