Maybe your original premise is the problem. I have a 2016 Hybrid SEL 66000 mi. original battery. I noticed
the time between pressing the engine off button, and when the system would power down (w/o opening doors) was getting
shorter. Was about 10 min. in past but now just over 3 min.
Dealer load tested battery and CCA was low. I had it replaced. Now I worry less about yellow wrenches and I think the shutdown
interval is a good indicator.