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HPWC connects/disconnects every few minutes

Discussion in 'Model X: Battery & Charging' started by jboy210, Feb 11, 2021.

  1. jboy210

    jboy210 Supporting Member

    Joined:
    Dec 2, 2016
    Messages:
    4,603
    Location:
    Northern California
    Hi,

    My HPWC charges fine, but I noticed when plugged in it connects for a few seconds and then disconnects every few minutes. Any idea why this is?
     
  2. TWS303

    TWS303 New Member

    Joined:
    Jun 15, 2020
    Messages:
    4
    Location:
    Denver CO
    I had the same problem with my 2020 Model X LR and Gen 3 HPWC. I determined that the issue is with the HPWC. I called Tesla (510-249-2490 option 2) and they pushed out a firmware upgrade for the HPWC, which has addressed the issue.

    I have also noticed that in cold weather the car charges more reliably if I turn on the heater (which heats the battery) before charging.
     
  3. dmurphy

    dmurphy Woof.

    Joined:
    Dec 7, 2018
    Messages:
    3,319
    Location:
    New Jersey - Morris County
    What firmware is your car on? I had a similar issue but it was fixed with the 2020.48.x firmware series.
     

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