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  1. PetriKarj

    Wiki Consolidated eMMC Thread (MCU repair) (Black Center Screen)

    I dont see any reason to have individual VPN cert per car to dial in to tesla VPN which looks like is hosted by AWS based on the naming convention. The AKAMAI is API interface the same applies. For the first time when car is connected to VPN to updateitself then its well likely that the VPN keys...
  2. PetriKarj

    Wiki Consolidated eMMC Thread (MCU repair) (Black Center Screen)

    Have you looked inside the files and compared those ?
  3. PetriKarj

    Wiki Consolidated eMMC Thread (MCU repair) (Black Center Screen)

    Sure, but thats not what I asked. I asked if P3 cert files contain the same VPN and API certs that are on P1 and P2 except for carkey which I could not find there.
  4. PetriKarj

    Wiki Consolidated eMMC Thread (MCU repair) (Black Center Screen)

    Has anyone looked inside the cert files, if those are plaintext or crypted ? On p1 and p2 there are several certs that could establish the VPN, like these: .\act\ic-slash-opt\odin\core\engine\assets\TeslaMotorsGF3ProductIssuingCA.pem...
  5. PetriKarj

    What range are you getting for your P85?

    394km = 244mi when value on gauge is divised by SoC% (P85 2014/2015) Btw 222/90% = 246mi @100%
  6. PetriKarj

    Wiki Sudden Loss Of Range With 2019.16.x Software

    Please point me then to right reading ...
  7. PetriKarj

    Wiki Sudden Loss Of Range With 2019.16.x Software

    Thats what I said in 2), i.e. short high current burst could melt the leaves back to the core.
  8. PetriKarj

    Wiki Sudden Loss Of Range With 2019.16.x Software

    A good question - lets assume its because of li plating. I am not a specialist of the topic but to my understanding there is a two step strategy in that case: 1) avoid charging in hot and with high voltages which would cause the situation to get worse 2) recharge with high current pulses...
  9. PetriKarj

    "Unable to charge - Disconnect cable and retry" - fixed

    I am not unfamiliar with that either. In my case the charger was limiting the power as another car was charging nearby, thats what I guess anyway. Looks like the signalling got Tesla confused.
  10. PetriKarj

    Wiki Sudden Loss Of Range With 2019.16.x Software

    Here is what I learned from briefly reading the patent without analyzing it too much. In overall the BMS has a preconfigured set of parameters that the BMS uses to set a fault flag that modifies the charge parameters (possibly e.g. the max cell voltage). When I talked earlier about detecting...
  11. PetriKarj

    Wiki Sudden Loss Of Range With 2019.16.x Software

    I agree with you - I thought that owning Tesla is a trouble free excersise but the more I dig the more interesting it becomes to own as its constantly teaching me new skills. My hobby background for past 2 decades is ICE engine tuning and hacing (yes, literally using dissassembler and rewriting...
  12. PetriKarj

    Wiki Sudden Loss Of Range With 2019.16.x Software

    Yes, after a charge eg within 5mV or so which is a very good balance. Anyhow would need to see the cell group voltages when under heavy discharge/load to understand the bigger picture. As you can see the response from Tesla there are certain conditions triggering the limits. Its unlikely to be...
  13. PetriKarj

    Wiki Sudden Loss Of Range With 2019.16.x Software

    Verdict from Tesla technician how the full capacity was restored after "sudden loss of range" situation. This confirms that when BMS detects faults it sets various limits to usage of batteryas an precaution action. In my case these limits were set automatically and later manually restored after...
  14. PetriKarj

    Wiki Sudden Loss Of Range With 2019.16.x Software

    Simple answer is no - not all batteries with similar type numbers or in same serial number range are affected. Based on my own experience and knowing the backgrouns being preventing fires I have a theory: In case there is significant imbalance between cells the maximum charge voltage is...
  15. PetriKarj

    Wiki Sudden Loss Of Range With 2019.16.x Software

    The reason was not specifically stated ny Tesla but based on teslafi logs my main battery voltage started to vary a lot and ultimately went down to zero - all this in a few hours after a normal ride and without connecting to charger. At the end the car did not start and after calling to road...
  16. PetriKarj

    Wiki Sudden Loss Of Range With 2019.16.x Software

    Interesting, back on original level. Mind you though that in my case the range loss happened with the fw update at SC when they did a warranty hv battery replacement (refurbished). Since the warranty repair I have been driving very carefully with a spare tire (destroyed 21” alloy wheel and...
  17. PetriKarj

    Wiki Sudden Loss Of Range With 2019.16.x Software

    Maybe a Tweet campaign addressing this issue by several persons at same time could raise the awareness to a level where a reaction will take place ????
  18. PetriKarj

    Wiki Sudden Loss Of Range With 2019.16.x Software

    Who is it that runs teslafi.com ? They could easily run a script to detect what % of cars and which models are impacted! Real statistics would help in communicating this to Tesla, tweet to Musk and contacting press...
  19. PetriKarj

    Wiki Sudden Loss Of Range With 2019.16.x Software

    If its li plating then thermal management (battery T>15C/59F) and prevent charging to 4.2V should be adequate countermeasure. The revised firmare does just that to improve longevity. In time Tesla will find optimum thermal and voltage management algorithms to minimize the need to drastically...
  20. PetriKarj

    Wiki Sudden Loss Of Range With 2019.16.x Software

    Also to me the Tesla communications reflect that they are combatting against lithium plating. They communicate two key messages; Revised thermal management Improved battery longevity Lithium plating occurs when the battery is charged in cold and with high current (=thermal management) When...
  21. PetriKarj

    Fluctuating battery SOC (Range) until finally 0%

    Thanks for the comment... Its actually much faster as one could see on the chart, e.g. some ~20kwh in or out in a minute or so - that would be 1200kW. I dont believe that being possible so this to me is either software fault or a loose connector/joint.
  22. PetriKarj

    Fluctuating battery SOC (Range) until finally 0%

    Anyone else experienced fluctuating drive battery SOC or any guesses what could be the cause ? In half of a hour from 50% down to 0% SoC. Attached an image of the fluctuation for a short time interval. The car had been driven normally prior to this but at the moment of fluctuation it was parked...
  23. PetriKarj

    AP1 ONLY Please -- life after 2018.50.6

    Must say I love 12.1.1 compared to 50.6, particularly as it feels that AP1 runs smoother and has better awareness. Another big plus is the dog mode which certainly will be appreciated when the summer is here in North.