Same issue here. My HPWC worked fine at 48A for about 1 month, then began dropping current to half the initial rate regardless of if I started at 48, 40, 36, etc. Usually after 20-40 minutes depending on start current. The cutbacks were random at first, just once-in-a-while, then became progressively more frequent until it was happening 100% of the time. Typical of a failing electronic component. New FW 1.42 did not resolve the issue. I received a new HPWC today and the PN is 1457768-01-G, so hopefully the "G" indicates a hardware revision that fixes the problem (the prior unit was "F").
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Tesla wall connector gen3 overheating fix
- Thread starter njhtran
- Start date
Garnetter
Member
It was 25 days from first support call until delivery. Which includes about 2 days of troubleshooting / firmware at the start.
Yes, it was a 5-minute job to dismount the old unit and snap the new one in place. So far it works fine at 48A on firmware 0.8.58.
While I am waiting for my Model S LR+ to be built and delivered I've been researching home charging methods. Is the consensus that it Gen 3 will work at a lower amperage (say 32 or 24) without issue? I dont mind charging at a slower rate until a permanent fix is discovered. I dont want to get "stuck" at home and not be able to charge (other than a standard outlet) so its either this or try and find a reasonably priced Gen 2 charger.
FYI, Here’s what I got from Tesla today:
“The difference in part numbers does not indicate a new version, but batch from manufacturer since some had a manufacturer defect.”
My experience with the defective unit was that it would always drop down to 1/2 the initial charging rate, and charge at the reduced rate until completion. Starting at 48A always resulted in dropping to 24A and charging until complete. And it’s probably safe to say that not all units suffer the issue, especially new ones.
I wonder what the manufacturer defect was in the old batch?
bhorn
Member
Also, when will Tesla contact owners of the defective units? Are there dangers with using the defective chargers? Can it degrade my car's battery faster?
No. The car is the ultimate decision maker in how much current to use. It will charge slower. That’s it.
Thank you. My predicament, while I wait for my MS, is whether to order a Gen 3 Wall connector ($500) from Tesla or install a 14-50 outlet and purchase a corded mobile connector with the 14-50 ($520 new, around $380-$400 gently used) for home charging. If there's a good chance that the latest Wall Connector hardware is good and will reliably charge at 48A then that's the route I would prefer, but I really dont want to have a bunch of charging issues that make my first few weeks or months owning a Tesla a PITA. I get a "feeling" that Tesla has figured out the problem and is resolving it for people who experience issues (seems like replacement hardware and the latest firmware are getting people back to reliable 48A charging). I guess I am looking for confirmation from those that have had the issue that it appears to be resolved or confirmation that this is definitely not fixed and it getting a working unit is more about getting lucky than anything else.
Garnetter
Member
My husband received a call from Tesla today that they are sending me a new unit! I had not even contacted them yet to tell them that this was the final outcome that needed to happen since I’ve been having this issue since June and no software updates were fixing it. I’m still in shock that they called out of the blue, but am very happy that they are doing the right thing!
As mentioned in previous posts, the gen 2 WCs have many benefits over the gen 3 WCs. They can charge at up to 80 amps (depending on the car), can be load-balanced (convenient if you have multiple Teslas) and most have longer charging cables than the gen 3, allowing more flexible installation options. They also aren't systemically prone to overheating. Currently, we have three gen 2 WCs and there aren't really any reasons to go with gen 3 over gen 2.
No news yet. Still charging at 50%....called Tesla and they said they are raising it to level 2 support. Wait for a call back in 7-10 business days. Waiting...
They’re sending me a 3rd charger and this time want the entire unit to be replaced. Last time they said just the faceplate. Called my electrician and they’ll come swap it out once it arrives. Fingers crossed. This was level 2 support after I called them back since I didn’t hear from them after “7-10 days.”
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