Many Reset Service functions are Not Listed in the mechanical repair Handbook in Etis or PTS. Because Ford Motor Company think/know that a certified Ford Mechanic has Read the Technical Service Bulletin/TSB 40/2013 that was published first time in the Year 2013. That is a common Thing. And Ford Motor Company thinks,that most of the Ford Mechanics are going to technical Training Centre to learn New stuff. When you use the Ford Diagnostic System Etis/SBD and you choose that the Fault Part is a Battery, the Computer will Show how to Reset the BMS System or the Diagnostic Tool will Perform the BMS Reset. Business as usual,Nothing New to me, but for Car Owner without special knowledge it can Sound odd.Interesting your method isn't listed in the service manual for the car, why is that?
What does detaching the sensor do in that case? To me it reads as if it hard resets the learnt parameters: