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Dead Kona EV!

Discussion in 'Hyundai Kona Electric' started by Wildeyed, Sep 28, 2019.

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  1. Oct 7, 2023 #281
    R P

    R P Well-Known Member

    Vancouver, BC, Canada 2023 Solterra Tech Pkg
    Running a lead acid battery dead is damaging in itself. Doing it often hastens its final death.

    If a battery runs dead, very important to fully charge it up to 100% ASAP. A partially charged battery will just continue to deteriorate. You can charge it to 100%, but it will not hold that charge for very long if it is damaged.

    I think you need a new battery. Hopefully, it is covered by warranty.
     
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  2. Oct 8, 2023 #282
    Lars

    Lars Well-Known Member

    2021 Kona Preferred Ontario, Canada
    I suggest you invest in a digital voltmeter. The cheapest on will do and last for a life time. Note that the KONA 12V battery should show at least 12.4V. And keep a jumper cable in the car. ;)
     
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  3. Oct 8, 2023 #283
    Keith Smith

    Keith Smith Active Member

    Phoenix AZ
    Bad/Intermittent Cell.
     
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  4. Oct 8, 2023 #284
    Lars

    Lars Well-Known Member

    2021 Kona Preferred Ontario, Canada
    To make sure that it is the battery that (does not accept and keep) charge you can disconnect the negative wire at the battery post and charge the battery with an external charger. It is still a pain, but if it is a year old OEM battery it should be covered by warranty. To get here, charge the battery etc., will take time! But if the battery charges and keeps the charge over night you may have an other problem. Either the car fails to keep the battery charged or the battery is drained by some sort of phantom load. Both would be covered by the 8yrs EV component warranty.
    If you would have a volt meter you could do more tests on the 12V battery - see on YouTube how.
     
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  5. Oct 8, 2023 #285
    Keith Smith

    Keith Smith Active Member

    Phoenix AZ
    This type of behavior is 100% consistent with a blown cell. In AZ the heat wrecks batteries. Just take it in and have it load tested. I'd bet money it fails. It appears to be charged , then you put a load on it, it works for a second or two, then falls over. Often times the second or two is enough to even turn over an ICE and start it.
     
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  6. Oct 8, 2023 #286
    Wildeyed

    Wildeyed Well-Known Member

    Eastern Ontario 2019 Ultimate
    I drove the car today with several starts and stops and it behaved normally. Here's a screenshot of today's charging activity from Blue Link up to now Screenshot_20231008-190201.png . It seems abnormal to me.
     
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  7. Oct 8, 2023 #287
    Keith Smith

    Keith Smith Active Member

    Phoenix AZ
    The thing is the Kona doesn't need a battery for long, and it really isn't loading it much, and when it dips it gets a kick from the traction system. Take it out and have it load tested. If it passes then look at the car, but I would bet it will not. Again this behavior is consistent with a failing cell. It works for a bit, then falls over when it hits a critical point. Don't over think it. Occam's Razor. The most obvious solution is most often the correct one.
     
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  8. Oct 8, 2023 #288
    Wildeyed

    Wildeyed Well-Known Member

    Eastern Ontario 2019 Ultimate
    I believe you (and others) but I just thought this charging pattern might be indicative of something specific, something that would pin things down.
     
  9. Oct 8, 2023 #289
    electriceddy

    electriceddy Moderator Staff Member

    Nanaimo BC, 2021 Kona Ultimate Built Sept 2020
    As you are probably aware, I don't run Blue Link, so these screenshots are unfamiliar to me.
    It is hard to tell when you drove the car in conjunction with the uploads provided. I do know after I complete a drive, the yellow light comes on and charges the 12 system on a regular basis generally ~ .5 hours after the car is shut off (after the drive), then every ~ 2 hour segments after that, and tails off to ~ 4 hours if the car sits for more than 24- 48 hours - unplugged from any EVSE.
    Just looking at the uploaded data you provided, I would have to agree this is not normal.
    It looks like the car is communicating on a continuous basis instead of shutting up and going to sleep which is probably contributing if not the source of your issues.
    Thank goodness I never enabled telematics on my 21MY, after getting spanked with a dead 12V battery on my 2019 MY, due to a similar issue.
    Do you actually require all that info, if not, maybe get the dealer to shut off telematics, and see if that helps to get the 12V charging sequence to a "normal" state, and additionally provide your car with the much-needed rest it deserves.
    Having a regular 12V charging pattern (visible with the light in the front) makes it quite easy for me to maintain a healthy level of charge, with the occasional utility mode boost when I am in the spirit.
    And I do check it with a voltmeter on occasion, just as a verification.;)
     
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  10. Oct 9, 2023 #290
    mtd

    mtd Member

    2023 Kona Electric Limited (US)
    The "shift into park for no reason" has bit me a few times, the reason is that a door is open. The "shift to park" message on the instrument panel overrides the door opening indicator, so it's not clear what's happening. This happened to me a few times I figured this out.

    Having a door open or not quite closed might then explain why your battery was drained shortly thereafter.
     
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  11. Dec 3, 2023 #291
    Wildeyed

    Wildeyed Well-Known Member

    Eastern Ontario 2019 Ultimate
    For the third time in 6 weeks my 12 volt is (almost) dead again. I had my dealer run a battery diagnostic 3 weeks ago after the first two incidents. It was normal cranking power and was resting at 12.4 volts.

    My car has been plugged in but not driven for 6 days. I noticed last night that the Blue link had not updated for 5 days so I suspected something might be wrong since previous incidents had similar Blue Link behaviour. All doors were definitely locked.

    The weird thing this time was the behaviour of the car. The dash immediately reported something about the 12 volt and to check the parking brake (?) and then the headlights began flashing on and off by themselves for several seconds. The second time I tried to start it the horn sounded on its own in sync with the dash hazard lights, again, all on their own.

    Do these weird symptoms mean anything to anybody?
     
  12. Dec 3, 2023 #292
    R P

    R P Well-Known Member

    Vancouver, BC, Canada 2023 Solterra Tech Pkg
    Possessed?
     
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  13. Dec 3, 2023 #293
    Wildeyed

    Wildeyed Well-Known Member

    Eastern Ontario 2019 Ultimate
    We
    I have a jumper battery I'll try tomorrow but no holy water.
     
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  14. Dec 3, 2023 #294
    R P

    R P Well-Known Member

    Vancouver, BC, Canada 2023 Solterra Tech Pkg
    Your 12V battery may need replacement. Just because it charges up fast doesn't mean it is good. I had that problem with my Solterra when I first got it. Went dead on me a couple times. Took it to dealer, and their test said it was OK. Took it to a battery place (Edmunds) and their test said it is bad. Charges up fast but no capacity, and will quickly deplete again. Went back to the dealer with the battery place results, and they agreed to replace it. Has been good ever since.
     
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  15. Dec 3, 2023 #295
    Wildeyed

    Wildeyed Well-Known Member

    Eastern Ontario 2019 Ultimate
    Maybe another new battery is the solution then. This one (the second) is only 18 months old. :(
     
  16. Dec 3, 2023 #296
    R P

    R P Well-Known Member

    Vancouver, BC, Canada 2023 Solterra Tech Pkg
    Do you have a BM2 on it? That could tell you if anything is going on, like excessive parasitic draw, etc or not charging when offline when it gets low (no yellow light). Also don't do stuff in ACC mode, have the car On (Ready) if you want to fiddle with settings, etc.
     
  17. Dec 3, 2023 #297
    Wildeyed

    Wildeyed Well-Known Member

    Eastern Ontario 2019 Ultimate
    No. I'm not a techie sort. I'm sure that there was nothing obviously amiss i.e.radio or lights on while in ACC mode, doors ajar, lights on, hatch unlatched etc. And I have never had any codes stored after these incidents either... according to the dealership.

    * I can't help wondering if it's the extremely frequent Bluelink notifications that have something to do with it.
     
  18. Dec 3, 2023 #298
    R P

    R P Well-Known Member

    Vancouver, BC, Canada 2023 Solterra Tech Pkg
    Could be but that's what the BM2 can tell you. I have never had Bluelink issues with either the Kona or the Ioniq 6. But have read here about others. So maybe. Also, how far is your car in the garage to inside where you keep your phone, FOB, etc. It may be connecting and waking up the car. Again, the BM2 would show that.
     
  19. Dec 3, 2023 #299
    KiwiME

    KiwiME Well-Known Member

    New Zealand '2019' EU, heat pump, pink coolant
    Probably a lot to do with it. The BM2 would have revealed that and I think you'd have no problem understanding it, assuming you have a smartphone.

    Normally I see this day after day. No Blue Link on this Kona. 12V battery is over 5 years old and as a result I do have to tiptoe around it to keep it like this.

    1558BBE2-8694-42C9-8636-F96A000482C6.png

    But when the dealer has the car they can drain it down to 12.0 V in 10 minutes, which is about 25% state of charge. Any further and it could be damaged.

    AACA84E5-AD34-4921-A773-7065781D79C9_1_105_c.jpeg

    If you buy a new battery I'd suggest an AGM type, what's called a 'hybrid auxiliary' battery.
     
    Last edited: Dec 3, 2023
  20. Dec 3, 2023 #300
    electriceddy

    electriceddy Moderator Staff Member

    Nanaimo BC, 2021 Kona Ultimate Built Sept 2020
    Demonstrates good reasoning to use Utility mode for a couple of hours frequently, especially when one knows it is going to the dealer for any service. ;)
    [​IMG]
    FWIW Get a new battery, nuke Blue link and disable remote telematics.
     
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