First off, you should file with NHTSA to record the defect.
Given that many motorhome owners have never driven vehicles with tow/haul mode capabilities and unfamiliar how it operates, why don't you post what you are doing to when you descend a hill in your 2016 Ford chassis motorhome? In my mind, operator unfamiliarity with operations are a big source of problems.
And before you ask, I've driven multiple vehicles made by GM, Ford, and Freightliner that all have Tow/Haul capabilities. I also read the posts by LVRVLURV on iRV2 and have to say that he has really no concept of troubleshooting a problem. Just hurling blame every time something doesn't work they way he expects it to.
So please tell us what you have done to test this alleged problem with your motorhome.
