I have been having a charging issue lately and it is one that apparently has affected others, from what Tesla told me.
I had a Gen 3 wall connector installed a couple of months ago by an electrician (not a Tesla listed one) on a doubled set of 30 amp breakers in a brand-new box with 200 amp service. The cabling distance from the box to the wall connector outside is about 2 feet.
It would charge at 11 kW and all was fine. About a month ago, I found it would sometimes stop charging and I would go out, unplug it and it would start again. This happened irregularly. It seemed to charge OK with the 110 volt connector except for errors twice. Then it would start at 11kW but soon downgrade to 6 kW and finish the charge.
I called for service and they gave me an appointment for about a month away, which was July 29 and they texted and said to call the wall connector people. I did not do that because I was not sure whether the problem was in the car’s interface with the connector or if it was in the connector, and I was managing.
He came on the 29th and could find nothing wrong. He wanted me to note the exact time it happened so they could more easily find the relevant code. Then just before he left, it downgraded to 6 kW after charging for about 30 minutes. It gave a code of the top light being red and blinking three times. He spent another 20-30 minutes reviewing code and manuals and could find nothing relevant; he suggested calling the wall connector people.
I called the connector number and after a few minutes describing the problem, he said that this is an issue they are having-mine is not unique. He said a software update to the connector had been pushed out but it apparently did not help mine. When I asked, he said that they can update the connector software without us knowing it happened.
He said they would send me a new wall connector to fix the problem, but the installation was on me. I told him that did not seem right, since it was their defect in a box that was a couple of months old. I don’t think he called Elon about it.
I was surprised that the regular tech had not been told of this problem and it did not appear with his investigation.
So, one question is, can I just replace the faceplate as I think it has all the brains. I think the wirebox has a temperature sensor but not much else. I can replace the faceplate in about three minutes without an electrician. I think I can replace the wirebox if I had to, as the wires are in place.
Any thoughts from those who know more than I do about this subject (which likely includes many of you).