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Wiki Sudden Loss Of Range With 2019.16.x Software
- Thread starter Dutchmeeuw
- Start date
NickleNiceness
Member
Just was updated to 2019.20.2.1 today i supercharged to 90%. The temperature on the dash said 102 degrees. I got 227 miles, which is actually a tiny bit higher than normal (225-226). My battery pack is a 2012 refurb, no idea when it was installed, but being a 2012 - I assume a long time ago. So my range is 227/.9 or 252 at 100, which equates to 95% of original range. I am a few miles shy of 100K. I got the car at 2018.50.6 - and the charging\ battery data has been the same across this now 4th software update for me. Seen no change in either charger ramping, top charge rate or range. Not that the updates have not changed behavior in others cars, it is not every car, of the parameters which are causing the effects seen are not present on my car. Of course next week it may change, but here is another data point.
DJRas
Member
The first is TMSpy. The other 2 are from ScanMyTesla. There is much more detailed information available from ScanMyTesla.
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DJRas
Member
Good, so at least they haven't cut down peak power. There's still some concern that they've change the power curve resulting in less power early on but we'd only be able to determine that comparing curves of similarly charged cars with similar battery temperatures.
275 volts is great for a 90F battery. Max battery ready would show about 299 volts if you had a nearly new battery at 1525 amps at 90%. 95% doesn't seem to make a difference vs 90%.
@SmartElectric , care to comment on why you disagree with my statement that the P85DL makes 1525 amps????
There was one guy in the comments on the Electrek article that had 15% just from the update.
That's almost exactly what I'm seeing roughly 225 to 227 at 90% And anywhere from 250 to 253 at 100% also 2012 S 85 with a replaced battery pack about a year before I got the car currently at 88,000 miles.
Folks, please contact Teslafi and ask them to add a fleet battery degradation report that shows percent degradation demarked by firmware versions.
The truth on how many and how much effect the entire fleet is is present in their data because their sample size is large enough to provide a very small margin of error.
The truth on how many and how much effect the entire fleet is is present in their data because their sample size is large enough to provide a very small margin of error.
When I uploaded 2019.16.2 my charging was slowed, it took 2 hours to charge from 90 to 99% at 40 amps. Supercharging was slowed also from 90 to 99%. It would not go to 100%. I also lost 3 miles of range but that could be an effect of not going to 100%. I got several notifications to contact Tesla service, they checked and stated my Model S was operating within normal parameters. Yesterday I got 2019.20.2.1 and uploaded. Once that was done I timed the charging from 90 to 100% at 40 amps with a stopwatch. The time was back to what it was before I uploaded 2019.16.2 and I can now go to 100%.
I'll be more convinced when some of the people who've lost 20 or 30 miles report that they gained it all back.
