Do you have Sentry mode enabled? (Maybe it got turned on with what Tesla was doing?) That would cause it to top the battery off very few hours.
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BMS_a079 - Unable to charge - Maximum charge level reached
- Thread starter TBrownTX
- Start date
E90alex
Active Member
LOL I called the penthouse a tent.
Thank you, as the error existed before the replacement of the HV battery assembly, and happened again after, logic would dictate it must be software or something else all together.
Will come back with updates as I learn more!
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No Sir, but thanks for suggesting that. Verified it's set to off when at my home location.
Service responded late in the day Saturday and asked me to bring the car back Monday so they could look at it.
In the meantime, it seems to have settled down in terms of the charging. Car slept all night without drain, and no more PCS charge errors since the one at 7AM yesterday. Car not showing any alerts at all this AM.
Pretty sure It's all good at this point, but I do plan to swing by Monday so they can take a quick look, just in case.
In the meantime, it seems to have settled down in terms of the charging. Car slept all night without drain, and no more PCS charge errors since the one at 7AM yesterday. Car not showing any alerts at all this AM.
Pretty sure It's all good at this point, but I do plan to swing by Monday so they can take a quick look, just in case.
Just did that, nothing at all in Service Mode either, almost like the logs were cleared.
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Just had the code come up today when I got home. Flashed for like a second when the car was waking up, then it was gone. Car charging fine and no issues that I can notice as of yet. Unable to Charge PCS_a023
Just got back from the service center, they sent a tech out to come speak with me and to check out the car.
No further errors in the log. Tech took the car back and supercharged it, put it on a L2 charger, and ran several diagnostics.
He acknowledged the bug with the PCS_a022 and PCS_a023 messages, although I have not seen either again.
No sign of any battery drain or strange charging in two days, car sleeping normally, etc. At this point I’m calling it good.
No further errors in the log. Tech took the car back and supercharged it, put it on a L2 charger, and ran several diagnostics.
He acknowledged the bug with the PCS_a022 and PCS_a023 messages, although I have not seen either again.
No sign of any battery drain or strange charging in two days, car sleeping normally, etc. At this point I’m calling it good.
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Josie67
Member
I got the dreaded BMS_a079 error on my 2021 Model 3 Performance with only 20,712 miles on it. I took it to the Tesla dealer, and sure enough, the HV battery had to be replaced. I have to say that I’m very disappointed that I already had a battery failure with such low mileage. It’s been a spectacular car, but that was quite a shock. Fortunately the dealer was able to replace the battery in 8 days.
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Good news is that my car has been flawless since the replacement. Other than having a loaner for a few days, there no evidence of the pack replacement. Team at my local SC did a great job and I got the car back faster than anticipated.
point Wheels
Member
But the warranty states that even if refurbished, it will have at least the same or greater capacity as your existing. In my case, I got 100% new.
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