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MX charging issues with adapter

Discussion in 'Model X' started by Kamranahmed, Aug 8, 2018.

  1. Kamranahmed

    Kamranahmed New Member

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    Fremont, CA
    Got my MX two weeks ago and its mostly parked in the garage since I was traveling and has under 200 miles so far. I have NEMA 14-50 installed in the garage and the car was connected to the charger while I was gone. Till know whenever I have charged it before and after my return it was charging at 22 mph at 42 Amp but last night the charging was at only @ 5miles with 8A.
    I tried to reboot the car few times after unplugging the adapter but it still charges at 5mph. The error message I keep getting is check adapter.
     

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  2. P85_DA

    P85_DA Supporting Member

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    Check your handle is all the way in and locked ..u will hear a click ..if charge port light is yellow not green that means handle isn’t fully engaged in port
     
  3. MorrisonHiker

    MorrisonHiker S 90D 2018.32.4

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    What adapter are you using that it is charging at 42 amps on a 14-50 outlet? The max should be 40 amps.
     
  4. Need

    Need Active Member

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    I think it was supposed to be 32 amps not 42. Since he only got the X two weeks ago, it probably came with Gen 2 UMC which maxed out at 32.

    OP, you will need to really slam the plug in. But before you do that, take a flashlight and look at both the plug and port of the car and make sure there is no broken pieces of plastic or rock stuck inside. Like P85 said, if you are getting 5m/h, you probably got the orange ring and not green. USE THE FORCE LUKE.
     
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  5. TexasEV

    TexasEV Well-Known Member

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    Actually if he got his X two weeks ago it would come with the Gen 2 UMC which has maximum of 32A.
     
  6. Kamranahmed

    Kamranahmed New Member

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    Yes It goes blue then flashing green so its charging.
     
  7. Kamranahmed

    Kamranahmed New Member

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    yes the ring is flashing green
     
  8. P85_DA

    P85_DA Supporting Member

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    What is your amps set to on console I assume it’s set correctly , than would test your 14-50 with multimeter ..if that checks out it’s your UMC that has issues
     
  9. Kamranahmed

    Kamranahmed New Member

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    Checked the 14-50 with multimeter, looks like the fault is somewhere between the panel and the socket.
     
  10. posity

    posity Member

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    The Leviton receptacles (really low priced at Home Depot, around $10) are notorious for failure. Tesla recommends Hubbell or Cooper ($40-$80) for good reason. They are essentially recommending you NOT buy Leviton.
     
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  11. tes-s

    tes-s Member

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    How did you come to that conclusion? Not sure what you could find out with a multimeter that would explain slow charging.

    Bad socket, bad wiring, bad breaker - I think all would show same results on a multimeter as a properly-functioning 14-50.
     

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