davewill
Active Member
You know, over the weekend I was thinking about this and realize something even more sucky about it. Assuming that one of the charging circuits would only go bad if it were being used, it seems to me that the cars experiencing this failure were usng the first two circuits until one of them died, then the car just started quietly failing over to the unused one. Even if Tesla has it programmed to randomly pick two of the three (which I doubt) it must have been constantly trying the bad one, having a failure, and switching to the "third" circuit to get 32a, all without a peep from the car.Hmm.....after 4 years of using the mobile charger in my June 2018 build Model 3, I installed an HPWC this weekend. Went to test it out and the message about "Charging slowed..." message. Had me wondering if I messed up the install. I checked everything and it seems good. So started to search about the problem, and found all you guys. Ugh. I have always gotten the full 32a out of the mobile charger, so had no issues. Now with the HPWC, I could do up to 40a, but the car just shows it still using only 32/40 and the "charging slowed..." message. I am guessing I am having this issue as well, and didn't even know it.
The car had every opportunity to report the error to the driver, which would allow people to have it taken care of. It also could have thrown error codes that could/should have been noted during a maintenance service. It really shouldn't be possible to have it fail without any indication. One is forced to assume that either Tesla engineered this really incompetently, or they are purposely hiding/ignoring these failures to avoid taking responsibility for them.
Sadly, both explanations are very believable.
Edit: I think it's also worth noting I think that checking the charger is operating properly ought to be part of a maintenance service just like checking the coolant levels, brakes, tires and 12v battery.
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