TMC is an independent, primarily volunteer organization that relies on ad revenue to cover its operating costs. Please consider whitelisting TMC on your ad blocker or making a Paypal contribution here: paypal.me/SupportTMC

Doesn't charge at Home, From the mains or from a Supercharger... Any ideas?

Discussion in 'Model S: Battery & Charging' started by LostJackal42, Apr 21, 2016.

  1. LostJackal42

    LostJackal42 Member

    Joined:
    Dec 14, 2014
    Messages:
    14
    Location:
    Milton Keynes, UK
    Just to be clear I've spoken with Tesla and they're looking at the log files and coming back to me, however, I thought I'd ask on here as there are tons of clever people that might sort it quicker.

    Last night we went for a quick 40 min drive and returned with around 70% battery, I scheduled the charge at 9amps (not 32amps) because we've got Solar panels so wanted to charge for free.

    Anyway, this morning I checked the car about 10am and noticed it was 'charging complete' but only had 90miles on the charge (see 1st photo).

    I went outside and tried to start a charge but it kept saying 'starting charge' & then instantly swapping to 'charge complete'. I did a reset of both screens, I powered the car down twice and I swapped chargers and tried different cables + my UMC. Same issue.

    I drove to the local supercharger (after advice from Tesla Owners Group UK) and it still wouldn't work (see 2nd image).

    Any ideas what might be the issue? Thank you
     

    Attached Files:

  2. LostJackal42

    LostJackal42 Member

    Joined:
    Dec 14, 2014
    Messages:
    14
    Location:
    Milton Keynes, UK
    For reference, this is a P85D
     
  3. liuping

    liuping Active Member

    Joined:
    Jul 23, 2013
    Messages:
    1,858
    Location:
    San Diego
    I've never seen the Batery level exceeds charge setting message. it definite thinks the charge level is lower that it's displaying.

    Have you tried a Deep reset yet? (I think it's: press and hold the brake pedal, when pressing both scroll wheels for 30 seconds, or until the Tesla logo pops up)
     
  4. LostJackal42

    LostJackal42 Member

    Joined:
    Dec 14, 2014
    Messages:
    14
    Location:
    Milton Keynes, UK
    I've done a standard reset (holding both scroll wheels) but will try pressing the brake as well.
     
  5. arg

    arg Member

    Joined:
    Aug 22, 2012
    Messages:
    740
    Location:
    Cambridge, UK
    The 'power off' (on the main screen, Controls->E-Brake&Power-off->Power Off) also resets some parts other resets cannot reach...

    Another quick thing that's obvious to try would be changing the target charge level - plainly the current state of charge is less than the 90% you've set, but possibly it's got confused and zapping it up to 100% and then back down again would get things back in sync.
     
  6. LostJackal42

    LostJackal42 Member

    Joined:
    Dec 14, 2014
    Messages:
    14
    Location:
    Milton Keynes, UK
    Video of what happens:

    @arg - I've done full power off from the main screen several times as well. I've changed the target charge multiple times as well and have gone to 100%.
     
  7. Muzzman1

    Muzzman1 Member

    Joined:
    Feb 8, 2014
    Messages:
    517
    Location:
    Los Angeles
    Try changing the charge limit on the phone app, then see if it changes on the MCU. Then change it again, maybe back to 100%, see if it takes a charge.
    ...it's as if the MCU is reporting the wrong value
     
    • Like x 1
  8. Electric700

    Electric700 Member

    Joined:
    May 21, 2013
    Messages:
    984
    Location:
    Florida, United States
    Also did the Deep Reset have any effect (from Liuping's post: ... I think it's: press and hold the brake pedal, when pressing both scroll wheels for 30 seconds, or until the Tesla logo pops up)?
     
  9. LostJackal42

    LostJackal42 Member

    Joined:
    Dec 14, 2014
    Messages:
    14
    Location:
    Milton Keynes, UK
    Tesla picked up on Friday and are working on it now (3 hours this afternoon) but still no joy so I fear parts will need to be ordered. The battery is now on 18 miles of charge.....

    Tried that but nothing

    Deep reset did nothing either :(
     
  10. Brunel

    Brunel Member

    Joined:
    Jan 26, 2015
    Messages:
    126
    Location:
    Bristol, UK
    Last week someone in the UK with a P85D had almost the same problem. Tried changing the units between miles and % and it stayed around 90. Would not charge. Now safely at a Service Centre.
     
  11. mgboyes

    mgboyes Member

    Joined:
    Apr 16, 2014
    Messages:
    811
    Location:
    United Kingdom
    You beat me to it :)

    The other UK car I thought had confused itself and decided it was an S40 (it had charged up to 67% SOC and then stopped). But as with yours, once the owner drove it and the charge dropped down to 50% or so they found that it still wouldn't charge back up.

    The nonsensical mileage reading is particularly intriguing...
     
  12. seclinton

    seclinton Member

    Joined:
    May 25, 2015
    Messages:
    129
    Location:
    Newark, CA
    Sounds warily like 1 of 2 things.

    1. Contacter failing
    2. Battery temp sensing faill( I.e at full charge pack temp is raised or cooling system during charge failed

    My 2013 P85 saw something very similar.

    My story here
    Fremont SC only drawing 10A on my car.
     

Share This Page