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2017 100D 2020.48.30 - 5 KW idle drain per 24 hours?

Discussion in 'Model X' started by tommytuna, Jan 5, 2021.

  1. tommytuna

    tommytuna Member

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    On a ski trip and having our 100D parked in heated garage but not able to charge. The idle drain over 72 hours was 15 KW!! Is this normal? Garage underground and car couldn’t get signal so wondering if that part of issue. Garage was heated, sentry and Summons turned off.. this is problematic..
     
  2. mswlogo

    mswlogo Well-Known Member

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    I wonder if lack of GPS caused one of the location based options to ponder.

    Did you leave your key in it by chance? That will drain it.
     
  3. fmm

    fmm Member

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    if you do a search you'll find that others have reported similar rates of battery drain when parked underground or in areas without cellular connectivity to the car - so, I think that is likely the cause. Not certain if there's a solution.
     
  4. tommytuna

    tommytuna Member

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    Ok that gives me a bit of relief as this is a one off situation / corner case for me.. i was getting worried as my normal situation is parking outside at the marina near my island cottage where I have no ability to charge. Often times at the cottage for 1-2 weeks so I figured I could handle 1 kW drain per day but 5 kw per day would have me on a tow truck lol.
     
  5. cwerdna

    cwerdna Active Member

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    Do you mean kWh? Energy is measured in kWh, not "kw" or "KW".

    If you had a 1 kW device and it ran for 1 hour, it used 1 kWh. 1 kW for 2 hours? 2 kWh.

    Multiply the units and time.

    If you had a drain of "72 hours was 15 KW", 72 hours * 15 kW = 1,080 kWh, which is far greater than the capacity of any Tesla vehicle battery.

    5 kW drain would be pretty bad. If you had that much in 24 hours: 5 kW * 24 hours = 120 kWh, which is more than the battery capacity of your vehicle.
     
    • Informative x 1
  6. tommytuna

    tommytuna Member

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    #6 tommytuna, Jan 5, 2021
    Last edited: Jan 5, 2021
    Sorry yes I should have been more clear. The battery went from 72% to 57% over course of 3 days parked. Given 100KWh battery pack I assumed I used 5 KW hours of juice per 24 hours of idle. Picture from Tessie app below
     

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  7. ek993

    ek993 Member

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    Check in Autopilot settings if Summon Standby is enabled. If so, it drains the battery at a horrendous rate when the car is parked away from its home location. The feature is enabled by default. Horrible feature, my phantom drain when parked away from home disappeared once I disabled it.
     
  8. tommytuna

    tommytuna Member

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    Thx for tip - I have verified that Summons Standby was off.
     
  9. jboy210

    jboy210 Supporting Member

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    3rd party apps have been known to cause drain by preventing deep sleep. Also, owners can cause this by checking the status of their car with the phone app.
     
  10. Richbot

    Richbot Member

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    Just had mine parked for 16 hours on this update with zero charge loss until it pre-conditioned on schedule, which cost 2kw (not plugged in this morning). Do you have scheduled departure turned on?
     
  11. JamesBrown

    JamesBrown Member

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    You're semi right but your math is a bit backwards. He said "The idle drain over 72 hours was 15 KW", which means a total battery loss of 15kWh over a 72hr period (not 15kWh per hour over a 72hr period). Usually phantom drain is reported in mi/hr though, not kWh. For a 100D, that 15kWh of loss over a 72hr period is 15kWh / 330Wh/mi / 72h = 0.63 mi/hr phantom drain. That is pretty high. Most users report a phantom drain of 0.2 - 0.4 mi/hr.

    Common causes of increased phantom drain rates:
    - Sentry Mode
    - 3rd party apps preventing deep sleep
    - Having key too close to car
    - Actively checking the Tesla mobile app
    - "Energy Saving” off and “Always Connected" on
     
  12. tommytuna

    tommytuna Member

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    So i am back home now connected to Wifi etc and drain over last 24 hours was much better. I will keep an eye on it. This recent firmware update (2020.48.30) has been unlucky for me - phantom drain, weird parking brake warning on highway and tonight the AP system when on fritz with camera errors. All within days of this firmware update:(
     
  13. jboy210

    jboy210 Supporting Member

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    Are you doing a full reboot after the update installs?

    Step on the brake, hold both steering wheel buttons down, count to 5, release. The car should go dark after a few seconds and after 30 seconds or so start to come back up.
     
  14. tommytuna

    tommytuna Member

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    Did the hard reboots today including removing 12V terminal. Still getting weird behaviour on this update including car not sleeping properly. Didn’t sleep at all overnight even after all these resets. 3rd party apps removed as well. Wish they had a firmware rollback feature!!

    was sleeping like a baby on previous firmware:)
     
  15. Bigriver

    Bigriver Member

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    My 100D MX has also had a change in the sleeping behavior since 2020.48.30 was installed. It usually sleeps for days if undisturbed. At least this has been its behavior since it got the MCU2 upgrade. For the past week after the software update, it goes through multiple wake cycles each day. I can’t discern any pattern yet. However, these waking periods are not resulting in any unusual drain. It has averaged a loss of 1 mile per day. No problem there.

    My model 3 is also having waking periods each day. They have been much more consistent of about 1.5 hours/day. Also no increased drain rate.

    I’m using Teslafi, so I know of the sleeping behavior but as I said, I am not getting any excessive drain.

    By chance, do you have MCU1? I had a lot of bad rounds of high phantom drain when I had MCU1. It would get better for awhile and then totally haywire again.
     
  16. tommytuna

    tommytuna Member

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    Yes very bizarre!

    I upgraded to MCU2/AP3 about 4 weeks ago. Note my rear camera and windshield cameras remain warm to touch while it fails to sleep.
     
  17. tommytuna

    tommytuna Member

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    Hooked up Teslafi again overnight and did see some 15 minute sleeps followed by 45 min idles. The really interesting thing is checking my UniFi Wifi the car has uploaded over 2GB of data over night? That is a ton of uploading.. I did file a “bug report” via car voice interface when my fender cameras went out the other day. Wonder if car is now dumping all the logs to Tesla?

    what is really bothering is the charge went from 85% at midnight to 82% by 9am:( that to me is unacceptable :(. Could it be my 12V battery is dying and car trying to keep charging it? Is a Tesla mobile tech able to pull deeper logs to see what is up?
     
  18. Bigriver

    Bigriver Member

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    A mobile tech won’t do that, but schedule an appointment and you will probably end up in a prolonged virtual appointment with some service tech. I did that this past summer. My problem ended up getting resolved, but no idea whether me contacting Tesla played a role or if it would have self corrected with a software update.

    Here are a couple of links where I posted about that experience.
     
  19. tommytuna

    tommytuna Member

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    Thanks for sharing - hopefully I can get them to push a FW install before any next steps. In addition to all this phantom drain, I lost signal to my two fender cameras (AP and Cruise now toast) and had weird parking brake error while on highway. 2020.48.30 seems glitchy as heck.

    I also noticed over 2.5 GB of data transmitted overnight from car to Tesla - car is uploading like mad!
     
  20. tommytuna

    tommytuna Member

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    over 5GB uploaded by car overnight according to my UniFi wifi access point. That is a ton of data! i realize Tesla is collecting data to improve the FSD but is this normal? Couple gigs each day over last couple days.
     

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