^UPDATE* I'm pretty sure I found the problem. I had a PTU failure last year. The original PTU, Part#7251A was replaced with the #7251D revision. The 7251D are associated with the 2011-2013 TSB 14-0186, the tech probably only looked up the 2010 model TSB's. My car goes in tomorrow morning and I hope this finally solves the issue. It will be interesting to see if there was any spline damage or excessive wear from this issue.
Ok, at slow speeds in my 2010 SHO I get a clicking and kinda like a slight snapping noise when turning the wheel back and forth and and going from reverse to drive or vice versa it also just seems loose to me when shifting to drive or reverse like there is too much play. There is no noise in park when I turn the wheel. And no noise up on jacks or when pushing the front end up and down. The noise is always reproduced in drive. The service department said they found no issues or looseness in the drive train and said they had a crowbar in and still found no play. They replaced the the right and left stabilizer link pins, bushings and nuts. They called me and said the noise is gone so I pick it up, don't ask me why I didn't test it at the dealer..I took their word for it, I get to my house 10 miles away and the noise is EXACTLY the same!! I paid $285 for nothing. I'm taking it back Tuesday. I guess new bushings are good to have anyway but do I have any recourse as far as the issue not being fixed and paying for something that wasn't the problem? I still have the power train warranty and I'm guessing the real issue is there. I've read here that it could be hubs or the splines going into the PTU and I think it's PTU related...I've had the PTU replaced after a failure and the transmission slip TSB fixed both within the past 18 months. Plus all the wheel bearings last year.
It's hard to hear because of the engine noise, you can hear it better from the inside the car video. I'm not moving and just shifting from drive to reverse a few times and at 00:12 you can hear an abnormal noise and again at 00:24. I then reverse out of my driveway, the noise is drowned out by road, tire and engine noise.
https://youtu.be/2rZHJ8tr4hQIn the second video below at 00:36 I start turning the wheel, it's a very smooth road with no bumps. The noise is definitely more noticeable live and the service tech agrees. You can hear the noise in the video especially around 00:40. Seat belt warning is working perfectly at 00:50. I am turning the wheel back and forth and you can hear the noise as I head back to my house. I'm in park at 01:50 and turn the wheel and there is never any noise in park.
https://youtu.be/qi2hNkJiT6QThere is a TSB for 2011-2013 SHO's and the issue described is exactly my issue. Is there a possibility that a PTU from a later model was installed after my failure? The new PTU part# they installed is
7251D.....update- I just found that the 2010 PTU is a 7251A....newer PTU and probably the TSB for the 2011-2013

FORD:
2011-2014 Flex
2011-2015 Explorer, Taurus
LINCOLN:
2011-2014 MKS, MKT
This article supersedes TSB 13-5-14 to update the vehicle model years, Issue Statement and Part List.
ISSUE
Some 2011-2015 Explorer, Taurus, 2011-2014 Flex, MKT and MKS vehicles may exhibit a noise that could be described
as ting, pop or click noise from the front wheel area when accelerating from a stop, on turns or when shifting between
drive/reverse and/or reverse/drive.
ACTION
Follow the Service Procedure Steps to correct the condition.
SERVICE PROCEDURE
1. Separate the halfshaft from the wheel hub. Refer to Workshop Manual (WSM), Section 205-04.
a. Do not remove the halfshafts from the transmission or power transfer unit (PTU).
2. Install one (1) thrust washer, metal surface first, over the halfshaft splines until the metal ring is flat against the wheel
bearing mating surface. The nylon surface should face outward toward the hub/splines. (Figures 1 and 2)