Drove for 10 miles. Car sat for 2.5 hrs and I come out to them happily running at 74%. Reminded me that even if the BMS is/has unwinded some of the range -- pumpgate and charge gate exist for some likely very good reason...
Wiki Sudden Loss Of Range With 2019.16.x Software
- Thread starter Dutchmeeuw
- Start date
Doesn't seem to. It'll charge to the set soc, stop charging, and immediately start draining. It can lose 5% before i get to it.
S 90 degradation fleet statistics: Degradation
S 90D degradation fleet statistics: Degradation
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In my experience, the pumps run regardless of being plugged-in or not. I've also noticed, once or twice, that they run even when I charge to 50% on AC.
Yes except I am NOT aware of any cars on this forum that even got close to loosing 30 percent range (I am at 10percent after 4 years/55k miles). I wonder what's better: Our warranties with Tesla saying it's all normal or the new one where it can't be disputed (they display the rated range)
Either way Tesla will not have to replace many batteries.
So you mean even though it's plugged in it can drain far below the charge setpoint????
Guy V
Member
I keep looking forward to there being enough experience data so we can all know what to expect for real-world battery life. When I first purchased I knew this was a big experiment and was prepared for much worse. It seemed that range was holding up remarkably well over years, then with one update a huge drop.
It isn't that the resulting range is terrible or unusable compared to original expectations, it's that now, after several years, the future is totally unpredictable again, warranties are expiring and Tesla still offers no reasonable battery replacement program.
How does this make any sense -- unless there is something fishy going on...?
Fishy? You are being so polite in describing the issue.
I can clearly hear my poor BMB's screaming for help
Might be time to start thinking about a wired 12v disconnect switch for when you're parked at home.
I first noticed the pump/draingate in May 16, 2019 right after installing 2019.16.1.
Continuous Faint Humming Noise When Parked
omarsultan
Active Member
My car lost a touch over 30% -- dropped to theoretical 180 miles of rated range at 100%. Once it crossed the 30%, the car threw an error and Tesla replaced the pack with a reman pack under warranty.
Same here. From March to May of 2019, I charged the car full and it showed 240 and 239 (max for 70D). in that same period, I drove it home once with 10 miles left and then charged it. So it would appear that I had the full range. Since then, I've rarely charged it full, and rarely dropped below 40, but in May 19, range was at 208 with absolutely not being able to charge past 205 not matter how long I left it plugged in. With some of the range miraculously "coming back", I'm at 228 - I actually did manage to charge to 227, not sure if it did charge to 228 and then it dropped due to normal drain, or it never got to 228. So my range has dropped in my opinion significantly during this hiatus, considering I haven't put that many miles on the car, and I've been pretty nice to the battery. If they indeed have raised the V limit back to pre 2019.16, then it would appear it is degradation.
So what I'm wondering is, was the degradation there before but it didn't show (which would be convenient b/c they sold it to me 2 months before 2019.16). It would appear that it wasn't b/c as pointed earlier, I had full range, though I didn't test the last 10 miles of range.
Alternatively, it developed over last two years, but even that doesn't make sense, that would be 5% range loss in some 16k miles.
There are other potential reasons too, but it comes down to, it seems everything worked fine until they "mitigated" it. And after they did, I don't have what I had before. So I cannot agree that it is a solution from user perspective.
yes. Mine did usually to 78% no matter if charge point was set 80,90 or 100%
maybe this was described in the paper or before in the thread, but I cannot recall I have seen it. So if they are not sure they are reading voltages correctly, how is it that they know reliably it is charged to 4.2v? or potentially not?
I know there was a discussion about "not-existing range" at the bottom due to errors in measaurement, but are you saying for some reasons lower voltages are not reliably measured but higher are?
I know there was a discussion about "not-existing range" at the bottom due to errors in measaurement, but are you saying for some reasons lower voltages are not reliably measured but higher are?
Guy V
Member
I didn't. Tesla found the brake problem and fixed it during an annual service. Then my Watts per mile usage dropped significantly.
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