Stopped KONA) After lasted BMS update - we found 7th cases..

Discussion in 'Hyundai Kona Electric' started by kennykim, Oct 21, 2020.

To remove this ad click here.

  1. kennykim

    kennykim New Member

    After BMS update (15-oct-2020) by automaker then some KONA stop and comfirmed will need to be replacement whole hi-voltage battery pac at korea.

    * Photo = 7th & 5th KONA

    07.jpg 05.jpg
    Last edited: Oct 21, 2020
    electriceddy likes this.
  2. To remove this ad click here.

  3. Ed C

    Ed C Active Member

    Who wants to Beta test the new BMS update?!?! Anyone???
    electriceddy likes this.
  4. Genevamech

    Genevamech Active Member

    I thought the major point of the BMS update was to tighten diagnostics and identify packs that were at risk and needed replacing, so they could be fixed before they became fireballs... so the fact that we have cars getting flagged like this is not the least bit surprising to me.
  5. I suppose the BMS is doing his work to stop any issues with the battery. I'm still waiting for the recall and see where this take us, the only solution I don't want to see is a reduction of range because I will be regretting not getting the Model 3 :'(
    Carma and electriceddy like this.
  6. HudsonKona

    HudsonKona Member

    i have a kona 2019 ev in new york state. i called the local hyundai dealer and they were aware of the recent recall(not just the bms update). but they had no directions from hyundai as what do do. they will call be when they get that and in the meantime i could call them every so often for any updates.

    it sounded to me from the media info that the fire problem was more probable if charging was to 100%.
    i only charge to 80%, so i am not too worried. but still want to hear the problem solved.

    Sent from my iPad using Inside EVs
    electriceddy likes this.
  7. To remove this ad click here.

  8. Lars likes this.
  9. Genevamech

    Genevamech Active Member

    I'm in the same boat (and state!) with a 2020 model.

    As for when the problem occurs: I don't know of any official statements but if the problem is cell damage from overcharging due to low safety margin, as has been discussed on these forums, then it makes a lot of sense that staying away from 100% will give you the headroom to avoid overcharging. It's not known if cell balancing takes place without charging to 100% (though it might with the latest recall update that most of us don't yet have).

    Since I also have basically no need to go over 80% charge, I also don't feel any real urgency regarding the recall... yet. Easy enough to watch as the situation to develop. Plenty of time to panic later!
  10. Mine is a 2021 Preferred, manufactured on June 17th.had the right equipment I also charge to 80% unless planing a long trip - like tomorrow - for three days! When started to charge from 56% my "check EV" light came on inside and the charger stopped charging. The light around the charge port blinked in red. I drove the car to the dealer who run the diagnostic. While waiting for him to get the diagnostic scanning gear the light went out. The scan showed no problem. Go figure. I was pleased that he had the right equipment and new he operated it with confidence. He made a note on the car's record and sent me away. Now the charge is at 90% and 448km. I think I will stop charging. Darn I need the distance tomorrow! The timing sucks. Just to be safe I will leave the car outside of the garage overnight.

    Can somebody tell me how to set the time on my Bluelink? It is 5 hrs behind Eastern Daylight Time. Hawaii time?
    Last edited: Oct 21, 2020
    electriceddy likes this.
  11. FloridaSun

    FloridaSun Well-Known Member

    I wouldn't worry about it.. I'm not changing my charging habits because of a few fires in 77000 cars... I know that my cells are within .02 volts, so I should be fine..
  12. To remove this ad click here.

  13. You are later than the Hyundai (Oct) recall window time frame.
    Charging to 90% should not be an issue, and if you can make that work for you, it will alleviate any anxiety and be better for the pack in the long run. ;)
    If you are concerned, check the battery label (back of the pack) is also out manufactured after March 13/2020.
    Might as well check the BMS ROM Id# at the same time, I suspect it will be 6980. Not 6220 as on mine.
    Details later...
    My advice for Bluelink, set it up and make sure it works - then never use it again. :D
    Regarding the check EV light, keep an eye on it, but "ghost issues" have been known to happen, hopefully it is just one of those.
    There is a possibility the 12 V accessory battery has never reached the capacity that is required to operate all electronic functions as they are shipped in "sleep" mode and may be down a bit.
    If you can measure with a meter 12.65 V seems to be the minimum resting voltage. See 12 V battery thread:
    Last edited: Oct 21, 2020
    navguy12 likes this.
  14. The new charge circuit did not fix the charging problem. My car is now back at the dealer, waiting for a new HV battery.
  15. Oh boy, Lars I think you may have the distinction of being the first 2021 Kona (post March 2020) with a traction battery failure. So sorry for your troubles.
    BC-Doc and FloridaSun like this.
  16. You know the good thing is, if any, that the problem showed up while the car is "new" (3,600km).
    Here is a quick recap:
    On Oct. 22 I took the car in with the complaint that charging stopped at 55% SOC. A diag scan on that day indicated a "cell over voltage" - as in past history? - but completed with all test OK. It did not indicate a charge problem at all. I took the car home, it charged to 80% no problem. As I said elsewhere the problem 'fixed itself'. Oh yeah - sure!

    On the evening of the 25th the charge stopped again - back to the dealer. The second scan, on Oct 26, must have prompted the dealership to order a new 'charge controller'. After they installed the new charge controller (fresh off the boat) yesterday afternoon, the car was left charging overnight to make sure everything is a OK. As it turned out it was a good idea, because charging stopped at ~50%. Roughly the same SOC as the one I took the car in with as a problem on Oct. 22nd. Service installed a 'software update' and ultimately ordered a new HV battery pack.
    The service manager said "strange, you car is not on the recall list ...hmm".

    Now that know that the source of the problem was not the charge controller, I wonder how accurate the diag scans really are? Also, the 'cell over voltage' in the history of the car bugged me. What happened to that? Once installed the new HV battery pack will resolve that concern as well.

    In any case my dealer was excellent in looking after me. No complaints there.
    Last edited: Nov 5, 2020
  17. It may be, curious as to the pack build date and related info off the pack label (Part# and BMS ROM ID). I wonder if Lars obtained that info (hopefully), and it does not correspond to any of the recall listed packs detailed here:
    or here:
    I would really like to know as I also have a 2021 model now with the following pack P/N 37501-K4054, BMS ROM ID 6980, manufacture date 2020/8/27 which does NOT correspond to any recall numbers (yet).
    Edit Lars last post came as I was typing, (not on the list) still want to know the P/Ns etc for the record
    Last edited: Nov 5, 2020
  18. Can you phone the dealer and get them to supply you with the label information off the pack? ( part#, BMS ROM ID and Manufacture date) unless you already recorded that info.
    navguy12 likes this.
  19. I do not have that info. I will ask the dealer tomorrow. Hopefully they will give it to me. They also told me that because of the weight of the pack they are not equipped to safely swap it. They will have to send the car somewhere to do that.
    navguy12 and electriceddy like this.
  20. ericy

    ericy Well-Known Member

    They required my dealer to purchase a special lift table to perform this job. Evidently around 5kUSD$.

    I am wondering if pack removal will ever be something that one could do at home. Unless you had a palette jack or some such, the answer is probably no.
  21. Money well invested by the dealer. Judging by the way things have been going, I suspect the lift device will become a very handy and well used tool;)
    navguy12 likes this.
  22. ericy

    ericy Well-Known Member

    At the start, I asked them whether this was something they could borrow from another Hyundai dealer - they could sort of pass one around on an as-needed basis. At the time, I bet the things were pretty rare - it would be fun to be a fly on the wall and know how many of these things they are shipping out. But it still would end up being something that you wouldn't need all that often. Then what do you do with it?

    My service manager also told me she got a call from Hyundai - they were asking about what they could do to improve the process:rolleyes:. She said she had some "suggestions".

    Apparently the thing can also be used to lower an engine or transmission of an ICE car. But the service manager was telling me that a lot of engines these days go in from the top and aren't dropped from the bottom.
  23. navguy12

    navguy12 Well-Known Member

    It's inelegant, but I have seen some YouTube DIY types swap battery packs in a home garage setting (one chap in Finland (I think) with his Rich Rebuilds from his early days are two examples that come to mind).

Share This Page