TMC is an independent, primarily volunteer organization that relies on ad revenue to cover its operating costs. Please consider whitelisting TMC on your ad blocker and becoming a Supporting Member. For more info: Support TMC

Sudden Loss Of Range With 2019.16.x Software

Discussion in 'Model S: Battery & Charging' started by Dutchmeeuw, Jun 3, 2019.

  1. ran349

    ran349 Member

    Joined:
    Jun 28, 2016
    Messages:
    261
    Location:
    SoCal
    Yes, with some extra decimal point precision.
     
  2. Dave46

    Dave46 Member

    Joined:
    Aug 29, 2014
    Messages:
    34
    Location:
    Eldorado
    It is possible that Teslafi just reads the 100% estimated range that is stored in the car. No calculation needed. I can see that value from the diagnostic OBD2 port. The value in the car calculated by Tesla.
     
  3. Dave46

    Dave46 Member

    Joined:
    Aug 29, 2014
    Messages:
    34
    Location:
    Eldorado
    Your car has half the miles as mine. The 100% range on both cars had slowly declined to about 240 miles. Yet on or about May 16 with the same new software version, both car batteries started degrading rapidly. Coincidence? It doesn't feel like it. We need more data from more cars.
     
  4. faughtz

    faughtz Model S P85DL

    Joined:
    Jan 4, 2015
    Messages:
    222
    Location:
    Los Angeles
    #44 faughtz, Jun 14, 2019
    Last edited: Jun 14, 2019
    B19F9EDD-0258-44F1-ACA2-0A6270ABAA43.png E3E44C4B-8A4A-47CE-9FA4-BEB968F4F82D.png 31D91713-FC70-42F9-8BC2-BCC221EC6103.png View attachment 419378 With data, it doesn’t look like degradation, looks like manipulation.

    On 02 Feb 2017 at 100% and 76.4kWh of 76.4kWh remaining capacity, module voltages were about 4.19v.

    Today, 14 June 2019, At 97% (where charging halted) and 64.3 kWh out of 66kWh capacity, module voltages are about 4.07v.

    Only charged to 97%, after 1hr and 51 minutes on a supercharger.

    This looks a lot like the max battery fiasco.
    and 691 and 762 hp.
    And 85kWh batteries, and ...
     

    Attached Files:

    • Informative x 1
  5. sorka

    sorka Well-Known Member

    Joined:
    Feb 28, 2015
    Messages:
    6,126
    Location:
    Merced, CA
    What do the relative voltages of each of the 96 strings show on a CANBUS scan with TM-SPY?
     
  6. sorka

    sorka Well-Known Member

    Joined:
    Feb 28, 2015
    Messages:
    6,126
    Location:
    Merced, CA
    I've sent [email protected] 5 emails in the last several months and they are no longer responding.
     
    • Informative x 1
  7. sorka

    sorka Well-Known Member

    Joined:
    Feb 28, 2015
    Messages:
    6,126
    Location:
    Merced, CA
    So glad I'm still on V8.
     
    • Love x 2
  8. sorka

    sorka Well-Known Member

    Joined:
    Feb 28, 2015
    Messages:
    6,126
    Location:
    Merced, CA
    Would be easy to verify if only someone with tm-spy and a canbus cable would look at what the BMS reports as SOC vs what is displayed on the dash....and what the kwh capacity reported by the BMS is.
     
  9. sorka

    sorka Well-Known Member

    Joined:
    Feb 28, 2015
    Messages:
    6,126
    Location:
    Merced, CA
    How are you reading this number?
     
  10. sorka

    sorka Well-Known Member

    Joined:
    Feb 28, 2015
    Messages:
    6,126
    Location:
    Merced, CA
    How do they explain the sudden loss of range. Gradual reduction in range is or can be normal but I don't know how they can say a sudden drop-off-the-cliff in range is normal or gradual.

    Did they ever respond to your last message shown?
     
  11. faughtz

    faughtz Model S P85DL

    Joined:
    Jan 4, 2015
    Messages:
    222
    Location:
    Los Angeles
    And here is 6 January 2018
    both tm spy and remote s


    I think they are further protecting the battery, expecting no one would notice.

    Or it’s like max battery,

    Both are trust issues.
     
    • Informative x 1
  12. Jays200

    Jays200 Member

    Joined:
    Apr 1, 2016
    Messages:
    567
    Location:
    Perth, Western Australia
    #52 Jays200, Jun 14, 2019
    Last edited: Jun 14, 2019
    I use scan-my-Tesla app and after 2019.6.3.2 update the battery buffer went from 4kWh to 5kWh thereby "stealing" 4kms of range :( pic in tweet

    Jays on Twitter
     
    • Informative x 2
  13. sorka

    sorka Well-Known Member

    Joined:
    Feb 28, 2015
    Messages:
    6,126
    Location:
    Merced, CA
    When my wife gets home with my elm327, I'll go out and use scan my tesla to record what it is currently. I'm still on v8 and will stay on v8 as long as possible. If Tesla actually takes away range with a software update, I will be suing them without delay.

    I removed all wifi aps and turned off wifi. Hopefully they'll only download software while on wifi. The staged software I've had for the last 6 months finally went away and no more yellow clock.

    At this point, it's probably time to root the car.
     
    • Helpful x 1
    • Love x 1
  14. Droschke

    Droschke Active Member

    Joined:
    Mar 8, 2015
    Messages:
    1,244
    Location:
    Future
    Ok. That's exactly what I did yesterday manually based on the IC data and during the same ride, but was getting two different results for the total range:

    135 RM @55% ==> 135/0.55 = 245.5 miles total range
    120 RM @50% ==> 120/0.50 = 240 miles total range

    Something not right ...
     
  15. ran349

    ran349 Member

    Joined:
    Jun 28, 2016
    Messages:
    261
    Location:
    SoCal
    Rounding errors can cause the discrepancy you are seeing there. The ranges of those two calculated values overlap if you take rounding into account. You will get more repeatable numbers if you do the calculation when at a higher percentage charge, like 80 to 90%. Even better, if you take the readings shortly after charging, say to 80 or 90%, you should get pretty repeatable numbers, at least over the short term. But you will still have some rounding uncertainty with the RM value.
    That is what I have experienced with data from charging my car.
     
    • Helpful x 1
    • Like x 1
  16. Droschke

    Droschke Active Member

    Joined:
    Mar 8, 2015
    Messages:
    1,244
    Location:
    Future
    Thanks for the feedback. Very helpful.
     
  17. faughtz

    faughtz Model S P85DL

    Joined:
    Jan 4, 2015
    Messages:
    222
    Location:
    Los Angeles
    Remote S and TM Spy. See my note on manipulation above.
     
  18. faughtz

    faughtz Model S P85DL

    Joined:
    Jan 4, 2015
    Messages:
    222
    Location:
    Los Angeles
    No, but it has only been a day.
     
  19. Droschke

    Droschke Active Member

    Joined:
    Mar 8, 2015
    Messages:
    1,244
    Location:
    Future
    That's how I view it.
     
  20. faughtz

    faughtz Model S P85DL

    Joined:
    Jan 4, 2015
    Messages:
    222
    Location:
    Los Angeles
    Since the cell/module/battery voltages are reduced, I wonder what the performance impacts are from this theft.
     

Share This Page

  • About Us

    Formed in 2006, Tesla Motors Club (TMC) was the first independent online Tesla community. Today it remains the largest and most dynamic community of Tesla enthusiasts. Learn more.
  • Do you value your experience at TMC? Consider becoming a Supporting Member of Tesla Motors Club. As a thank you for your contribution, you'll get nearly no ads in the Community and Groups sections. Additional perks are available depending on the level of contribution. Please visit the Account Upgrades page for more details.


    SUPPORT TMC