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Not charging at 72 a from hpwc

Discussion in 'Model S: Battery & Charging' started by desidon, Jun 11, 2016.

  1. desidon

    desidon Member

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    Folks.. Brand new model S... I had ordered the 72 amp upgrade. Also got HPWC installed at home.
    Plugged it in for the first time and it is getting 48amp from HPWC.
    Is this an HPWC installation issue or some setting I need to turn on?
    Pic attached
     

    Attached Files:

  2. AEdennis

    AEdennis Active Member

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    Did it charge at 72A before you left the Delivery Center?

    Check your breaker or perhaps settings on your HPWC.
     
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  3. Boatguy

    Boatguy Member

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    #3 Boatguy, Jun 11, 2016
    Last edited: Jun 11, 2016
    I don't mean to offend you, but have you tried to increase the charge amperage on the charge screen and it maxes out at 48? Normally it's grayed out if it can't go any higher and in your photo it looks like the up/down arrows are active.
     
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  4. AEdennis

    AEdennis Active Member

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    I didn't look at the photo before I responded to query... @Boatguy is right... It looks like it's set for 48A... You can fine tune that to what the car sees as the max available.
     
  5. TexasEV

    TexasEV Active Member

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    What amp circuit is your HPWC on and is the dip switch set for the correct amperage?
     
  6. linkster

    linkster Member

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    The dip switches inside the WC are set correctly (as shown in the pic). Just toggle up to 72A as others have suggested.

    Good-Luck!
     
  7. aesculus

    aesculus Still Trying to Figure this All Out

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    You probably just need to adjust it but do you have anyone else with a 80 amp Tesla that can check your charger for you? I installed mine for my Model X and it only reported 48 amps too. I had a neighbor test their dual charger Model S and it charges at 80 amps.

    Called Tesla and they said they put the wrong charger in my car (note I have a 15xx VIN Model X). So this week it gets swapped out for a new charger.
     
  8. TexasEV

    TexasEV Active Member

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    Swapped out? I thought Tesla recently said it was a software change to go from 48A to 72A, not different hardware.
     
  9. aesculus

    aesculus Still Trying to Figure this All Out

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    I asked three different groups in Tesla about this and they all stated my car needs to have the charger swapped. I suspect since my VIN is so low for production, that the first chargers were either 48 or 72. Later they must have decided to only source the 72 amp ones and derate them unless you pay to have it unlocked.
     
  10. desidon

    desidon Member

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    Hi folks.. The Dallas delivery center did not have 72 a.
    At home... The up arrow key does not take the amps any higher than 48.
    Dip switches were checked again by the install guy. Looks correct. See pic.

    Looks like the software thing never got enabled for me... Unfortunately I do not know anyone with a 72amp model S or X.
     

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  11. beantobe

    beantobe Member

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    #11 beantobe, Jun 13, 2016
    Last edited: Jun 13, 2016
    I'm having same issue. Brand new model s, upgraded charger, new hpwc, dip switches set correctly and 100 amp fuse.
     
  12. Larry

    Larry Member

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    Same problem for me as well
     
  13. aesculus

    aesculus Still Trying to Figure this All Out

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    Did you all contact the 24 hr support line to report your problem? At least one person stated after they did this with a Model X it was activated the following day. When I did that is when they came back to me and had the SC contact me to explain I needed the charger swapped. It may be different for all of you.
     
  14. desidon

    desidon Member

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    I called the number last night. The guy said he does not see the 72 amp upgrade in the car specs on his end. Said he would create a ticket for the service center and they will get in touch.
    Someone probably forgot to turn the option on in the factory......
     
  15. Larry

    Larry Member

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    I contacted them as well. They confirmed the 72 in the specs and sent the issue forward to the service center. I also contacted my DS and he is looking into it as well. I'll let you know what my outcome is.
     
  16. Larry

    Larry Member

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    Firmware issue set incorrectly at the factory. Requires a SC visit and redo the firmware. Takes about 4 hrs. All refreshed come with the same charger which is then adjusted with the firmware to 48 or 72.
     
  17. aesculus

    aesculus Still Trying to Figure this All Out

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    I will report after tomorrow's service visit but right now the pre invoice states this:

    My charge of course is $0.
     
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  18. desidon

    desidon Member

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    They called and set an appointment with me as well but the first available is 2 weeks out in Dallas.
     
  19. Larry

    Larry Member

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    To me having to wait 2 weeks for a feature you paid for and they f'd up is unacceptable. When I called I just had them connect me to the service manager and he got me right in. A lot of times the concierge that answers the phone is clueless.
     
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  20. Tech_Guy

    Tech_Guy Always in Ludicrous mode

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    yikes... I'm going on a trip soon and have a hotel booked with a destination charger as they are far from a supercharger i hope it charges at 72 or I will be pissed, I have no way to test I almost feel like I should call the support line to confirm!!
     

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