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Huge Battery Drain Since Firmware Upgrade

Discussion in 'Model S: Battery & Charging' started by ABCCBA, Apr 14, 2016.

  1. ABCCBA

    ABCCBA Member

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    I got a notification yesterday morning that a new firmware upgrade was available. I loaded it at 6:30 am yesterday. Within three hours, I lost 3 miles of charge. The car automatically started recharging and recharged to 247 miles of range. I just received a notice, right at 26 hours from yesterday's full charge, that the car was recharging with 233 miles. That is 14 miles in 26 hours. The car has not been driven and is plugged in. It is a 2015 85D with 5K miles. Ordinarily I had seen between 2 - 3 miles per day loss.
     
  2. ArtInCT

    ArtInCT Always Learning

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    I think I did notice more vampire drain with the 2.16.17 firmware. So yesterday upon arriving home at noon I did a data gathering test. I plugged in the car to my HPWC, made sure all climate and seat heaters were off and the S was locked. My car is set with Always Connected so I left it that way. I set the charge limit below the current charge level so that it did not charge. Set a time alarm on my phone and logged the rated hour drain every hour... using the Tesla App on my iPhone to display to me the data and jotted it down on a pad.

    1PM 188 Rated Miles
    2PM 188 Rated Miles
    3PM 188 Rated Miles
    4PM 187 Rated Miles
    5PM same
    6PM same
    7PM 186 Rated Miles
    8PM same
    9PM same
    10PM same
    11PM 185 Rated Miles.
    turned in for the night
    6 AM 183 Rated Miles and then I initiated a charge session to 80%

    A loss of 5 rated miles or about one rated mile per ever 3+ hours of wall clock time.

    I am not sure if this is more or less that my previous firmware version which was 2.12.126

    I have not performed the data gathering with Always Connected set to OFF.

    My S is only 5 weeks old with 1,200 miles.

    I suggest you perform such a data gathering test yourself.
     
  3. ABCCBA

    ABCCBA Member

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    Mine just finished the full charge. It used to charge to 247, it stopped at 242. I will log the drain every hour and see where we are tonight.
     
  4. AWDtsla

    AWDtsla Active Member

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    Yes I appear to be having very high losses, but I haven't done a log. However, I've lost 16 miles in ~23 hours, having only driven <6 miles in that time. I'm going to try and do some detailed tracking overnight. I can however tell right now that my [email protected] charging is reporting slow, 4.2mph vs 4.5mph typical, which is strange.
     
  5. benjiejr

    benjiejr Technogeekextraordinaire

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    #5 benjiejr, Apr 14, 2016
    Last edited: Apr 14, 2016
    Mine has not changed. I still lose about 1 RM per 4 hours. I've been trying to drain my battery down this week for some service work tomorrow so I am watching it pretty closely.

    Edit: To be clear, I'm on 2.16.17.
     
  6. ABCCBA

    ABCCBA Member

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    4/14/2016 14:00 242 mi
    4/14/2016 15:00 242 mi
    4/14/2016 16:00 241 mi
    to be continued....
     
  7. Tdriver

    Tdriver Member

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    I found that after the update my parking lights stayed on. Had to change the menu back to auto.
     
  8. ABCCBA

    ABCCBA Member

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    4/14/2016 17:00 241
    4/14/2016 18:00 240
    4/14/2016 19:00 240
    ....Will update tomorrow morning
     
  9. ABCCBA

    ABCCBA Member

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    04/15/2016 02:00 238
    04/15/2016 06:00 237
    So far, that is 5 miles in 16 hours
     
  10. mikeash

    mikeash Active Member

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    Dumb question: doesn't checking it frequently like that accelerate the drain?
     
  11. tezzla

    tezzla Member

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    Yes, it does.
     
  12. AWDtsla

    AWDtsla Active Member

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    Lost ~4 miles in 15 hours last night, which was atypically low for the week since the upgrade, with VisibileTesla checking every 5 minutes.
     
  13. BertL

    BertL Active Member

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    Posted this earlier today over in the Firmware 7.1 Thread in case it's of any assist to those having problemso.

     
  14. ABCCBA

    ABCCBA Member

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    04/15/2016 14:00 234
    So, it lost 8 miles in the last 24 hours. This is better than two days ago, but 2X to 2.5X the normal 3 to 4 miles I had previously observed.

    While there is an apparent change since the update, it is not evident if it was coincidence or not.
     
  15. TLej

    TLej Little-Known Member

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    I leave my display on battery % rather than rated range, but I parked my car in my (unheated) garage last night about 6:00 p.m. with 79% battery remaining; when I came out to it this morning at 7 a.m. it was at 78%. Garage stayed pretty warm, about 10C inside with outdoor ambient temp at about -1C. Updated to 2.16.17 on Wednesday. With my 90D, 1% of battery works out to something like 5 km or 3 miles of range, give or take. It actually seems to be a little less drain than I used to see, but it's only since the weather warmed up that I've stopped charging it every night so I don't have a large baseline to relate to.
     
  16. AWDtsla

    AWDtsla Active Member

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    My vampire drain has settled back into it's old pattern, about 73 watts of continuous background draw. Of course there were several days after the update where this wasn't true. Good thing I didn't need that range. Could have been in trouble if I was traveling somewhere and didn't expect to lose that range.
     
  17. Todd Burch

    Todd Burch Electron Pilot

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    I'm losing 4 miles a day on 2.16.17. But I don't check it hourly, which will of course keep your car awake for a large portion of the time and defeats the whole purpose of having a sleep mode...
     
  18. jerry33

    jerry33 S85 - VIN:P05130 - 3/2/13

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    I'm assuming that you've checked the settings and rebooted? Upgrades have been known to mess with the settings on occasion.
     
  19. AWDtsla

    AWDtsla Active Member

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    It's back to normal now. I did not have to do anything.
     

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