I have an original Tesla HPWC from my 2013 Model S. That car had dual chargers (as it was called back then), never had any charging problems with it or loaners. Last April 2017 I took delivery of my Model X 100D with the High Amperage Charger. My HPWC is set to 72A. Never had a single charging problem. A few months ago I had a loaner Model S and I could not get the HPWC connector to fully sit into the charging port. The ring around the port went yellow and there was a "charge cable unlatched" message on the dash. It did, however, charge at 16A despite the message. Out of curiosity I tried the loaner's charge cable plugged into my 110V wall socket and it worked fine (latched and green). Because I only had the loaner for a day I decided not to worry about it. I got my Model X back and the charging worked like normal again. Today I came home with another Model S loaner...this time a virtually brand new 75D. Same exact thing "charge cable unlatched" and charging at 16A. So being that this happened to two different loaners, one would think there is something wrong with my HPWC. Yet my Model X charges perfectly? Why would this be? Could it be because the HPWC is set to 72A and the loaners can't support that? Is there another reason an old HPWC wouldn't work with two newer loaners? Appreciate any thoughts!