See my response in your original post

I vacuumed out my PTU fluid as my PTU does not have a drain plug.   I got ( most likely ) all of the old fluid out.  When vacuuming, you have to move the vacuum hose around into the corners to get it all. I actually was able to put more fluid in than I took out by a small amount.  

You need to better describe " hitting hard ".  What does that mean to you?   A better understanding of what you are actually feeling can help get you a better answer. Are you hearing a bump? Do you feel you the car is bottoming out on the bump stops? Does it sound like something is loose / clanging?   Please update so you can get better help.

My 2018 Edge Sport has 135,000 miles on it.  Rear struts replaced with Monroe about 16 months ago.  Didn’t fix the problem of hitting hard on road creases or on parking lot/driveway curb entrances.  It rides fine otherwise, it’s just those creases that sounds and feels like metal on metal.  I’ve had it on the lift, repair man doesn’t see anything wrong.  Ford wants $200 to inspect it.  Sway bars? Control arm?  Anything to look at specifically? 

People should look on ebay (though I just got screwed by ebay on a return shipping scam).  There are multiple sellers selling this same part for 1/2 the price with the heat shield and the drain plug.  It worked well in mine.   Probably would last 100k.  The original lasted till 168.   I did the entire firewall refill setup, would be easy to service.  Bought a measuring injector (plastic).  Measured what came out, then put that back in, did not have to mess with filling it under the car.  

2014 Edge 3.5L is showing all of the following codes:   Trying to figure out what is actually causing this.  Is it actually the ABS module or is it the Steering Wheel position sensor?   The codes have not been reset yet to test if they come back. Also, battery hasn’t been tested for proper voltage yet.

Dealing with my 2nd Edge PTU service.  The last one had the slick drain and fill setup. This is the original ptu.  I have done 2 suctions thus far.  It certainly needs an exchange after looking at the lube.  With this service I could only get 30% of the fluid out of it before the thin hose bottoms out in the case.  It is probably a bit better than it was but I am debating the virtues of a drain plug.  There was no metal present at all.   I threw out my old ptu.  Does anyone know the thickness of the case?  Is there an idea location to tap if installing a plug?  I am trying to find the lowest point possible.  Thought I saw something about this a long time ago but I cannot locate it in the forum now.  

Any resolve to this issue? I realize it's been a while, but I have a 2018 Edge sport and have had the rear shocks replaced.  Upon visual inspection by 3 different shops, nothing else has been found.  One garage wants to charge me $187 to do a thorough check on the lift and inspect sway bars, bushings and strut mounts.  Mine does the hop as well but also hits extremely hard on creases or driveway curbs.  

This is for the liquid cooled ptu Differential Draining and Filling - Rear Drive Axle-Differential - 2022-2024 Edge - Copy.pdf Power Transfer Unit Draining and Filling - Power Transfer Unit - 2.7L EcoBoost - 2022-2024 Edge - Copy.pdf

As expected the PCM does not "command" the second wire at the ignition coil to ground.