“ check electric vehicles system” warning on after 9C5 recall system update

Laolee

New Member
Hi all, I have a 2023 Kona EV SEL, 100,200 miles. Dealers performed the 9C5 recall update for me last week and it shows the “ check electric vehicle system” warning light is on. I called the dealer and they say I can tow the car to the dealer at my own cost and they will performed an inspection with $300 fee. If it is related to the recall, they won’t charge the inspection fee then. Have you seen the similar warning before after the update, any suggestions for the next step? Really appreciate it!
 
If the car drives there's no reason to have it towed. I'd email them a photo of the warning light and ask if it's "safe to drive". If it's not drivable call Hyundai Assistance or whatever it's called wherever you live and have them deal with it.

The update you have is likely been around the RoW since Jan 2026 (as it has a very similar description) and a few recipients have had this happen. Generally the fix is a new traction battery.
 
If the car drives there's no reason to have it towed. I'd email them a photo of the warning light and ask if it's "safe to drive". If it's not drivable call Hyundai Assistance or whatever it's called wherever you live and have them deal with it.

The update you have is likely been around the RoW since Jan 2026 (as it has a very similar description) and a few recipients have had this happen. Generally the fix is a new traction battery.
Thanks for your reply!! It is still drivable and the dealer who performed the recall update is 30-min away while I have another dealer is nearby about 5-min. Should I go to the one who performed the recall update.

One thing I’m concerned is that my car just passed 100k mile, which means it is out of warranty. Not sure if I need to pay everything out-of-pocket or it is related to the recall issued so Hyundai will cover it.

I am also interested that should I do something g simple to check by myself first. Like 12-v battery issue? Or something else. I bought this as used car about 6 months ago before and first time to see this warning light on. Appreciate it!
 
I'm not aware if your battery warranty is still in play but the campaign document addresses that situation. I'd use the dealer that did the update since they may feel more obliged to help since they did the work and should warranty that.


The error you're seeing covers a number of faults but the timing with having the update does seem to indicate that was the cause. The update tightened the tolerances of battery cell voltage variations ("balance") and temperature.

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I'm not aware if your battery warranty is still in play but the campaign document addresses that situation. I'd use the dealer that did the update since they may feel more obliged to help since they did the work and should warranty that.


The error you're seeing covers a number of faults but the timing with having the update does seem to indicate that was the cause. The update tightened the tolerances of battery cell voltage variations ("balance") and temperature.

View attachment 28975
Really appreciated it!
 
I'm not aware if your battery warranty is still in play but the campaign document addresses that situation. I'd use the dealer that did the update since they may feel more obliged to help since they did the work and should warranty that.


The error you're seeing covers a number of faults but the timing with having the update does seem to indicate that was the cause. The update tightened the tolerances of battery cell voltage variations ("balance") and temperature.

View attachment 28975
Really appreciated it! Is
I'm not aware if your battery warranty is still in play but the campaign document addresses that situation. I'd use the dealer that did the update since they may feel more obliged to help since they did the work and should warranty that.


The error you're seeing covers a number of faults but the timing with having the update does seem to indicate that was the cause. The update tightened the tolerances of battery cell voltage variations ("balance") and temperature.

View attachment 28975
is there a way to tell if the replacement is subject to this recall update or not? In case the dealer is misleading me. Thanks!
 
I'm not aware if your battery warranty is still in play but the campaign document addresses that situation. I'd use the dealer that did the update since they may feel more obliged to help since they did the work and should warranty that.


The error you're seeing covers a number of faults but the timing with having the update does seem to indicate that was the cause. The update tightened the tolerances of battery cell voltage variations ("balance") and temperature.

View attachment 28975
I went to the dealer today and he kept saying that everything is due to that I don’t do the service. The vehicle is giving a message that vehicle is due for the service. I bought this car from this dealer 8 month ago and have driven 6,000 mile since then. He said the electric car also needs fluid update which is similar to oil change for an oil car? Because of that I don’t do the service, it damages the battery. Is he right? Or he is just using this to try to put all the cause to me while not the upgrade or the car itself?
 
I've not heard of any 1st-gen Kona owner reporting that the battery had been damaged from lack of carrying out periodic maintenance servicing. The coolant replacement interval is at 40k (or possibly 35k) miles for that year and your's was not subject to the BSC1 coolant campaign which resulted in lots of related problems for those earlier examples. There's been no indications that leaving BSC2 coolant change intervals longer has been harmful.

You said you had a “check electric vehicle system” warning light which is not the same as a "service due indicator". The prior indicates and electrical problem and that needs to be diagnosed and rectified, not a difficult job for a trained Hyundai technician. But given that the update reduces the tolerance for battery parameters and a few others have seen this as well, it seems likely that it triggered the warning.

I'd suggest asking the dealer to "get your car in working order please" which long ago was what dealers did for a living.
 
I've not heard of any 1st-gen Kona owner reporting that the battery had been damaged from lack of carrying out periodic maintenance servicing. The coolant replacement interval is at 40k (or possibly 35k) miles for that year and your's was not subject to the BSC1 coolant campaign which resulted in lots of related problems for those earlier examples. There's been no indications that leaving BSC2 coolant change intervals longer has been harmful.

You said you had a “check electric vehicle system” warning light which is not the same as a "service due indicator". The prior indicates and electrical problem and that needs to be diagnosed and rectified, not a difficult job for a trained Hyundai technician. But given that the update reduces the tolerance for battery parameters and a few others have seen this as well, it seems likely that it triggered the warning.

I'd suggest asking the dealer to "get your car in working order please" which long ago was what dealers did for a living.
The dealer just sent me a message that they found the bad cell and the battery need to be replaced. Can I use the recall update to cover the replacement? How can i justify it is due to recall. Thanks so much!
 
Dealer said the battery needs replacement. However since my warranty is just expired, I need to pay of pocket. Anything related to this would be much appreciated? Dealer does not want to help and corporate does not want to help. If you have any experience with this or if you have heard anything related to this. I appreciate your advise. Thanks!
 
it it just beyond 100,000 miles, so it past the warranty. Another question, it quoted 15,000$ to replace the battery, is it reasonable? Should I replace the battery or just give up this car?
 
Ah yes, either years or mileage, whichever comes first.......probably depends on alot of other factors, overall condition of your 2023, at >100,000miles, things like suspension/steering components may require attention etc., when you purchased, was there any kind of inspection report given on overall condition?? If everything is all good, then 15,000 would give you a new battery pack that should last another 7-8 years and probably cheaper than looking for another car, but again unless you know for sure.
Perhaps taking it to a "good" Hyundai dealer or one that specializes in EV's and getting overall report, even if it costs a few hundred dollars might be a good investment.........good luck!
David
 
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it it just beyond 100,000 miles, so it past the warranty. Another question, it quoted 15,000$ to replace the battery, is it reasonable? Should I replace the battery or just give up this car?
According to this post, the window sticker for a 2019 Kona Electric boasted an Exclusive Lifetime Electric Battery Warranty. The bean counters must have decided that warranty cost the company too much money and, in 2020, they limited the traction battery warranty to 10 years/100,000 miles. My condolences that your battery died a few miles beyond that distance.

Unfortunately, the cost of that new battery is greater than the cost of another 2023 Kona Electric. However, the replacement battery for your Kona may come with a warranty another used Kona Electric wouldn't have. Either way, it's a real bummer.
 
Thank you. Just 1 week before this, the AC on this car also died. It blows only normal temperature air. I’m not sure if it is related to this either. And if replacing the battery will solve that AC issue. Which makes me thinking whether I should spent this money for the repair
 
Dealer does not want to help and corporate does not want to help.
A three year old EV needing a new battery sounds ridiculous because it is. It's outrageous that Hyundai won't back you up, but I'm not surprised either based on seeing 8 years of their obfuscation and avoidance of responsibility. A fault like this is not the consumers fault and nothing to do with the miles driven, just bad design (using 3 cells in parallel) and quality control (re: the worldwide recall in 2019).

If you decide to repair the car the battery can be obtained for less from US-based parts suppliers (seen image) like Genuine OEM Hyundai Parts and Accessories Online - Hyundai Parts Deal

If you have an independent EV shop in the area they can install one or may even be able to repair the existing pack.

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The AC repair will cost 1k-2k in any denomination, another screw-up from them.
 
A three year old EV needing a new battery sounds ridiculous because it is. It's outrageous that Hyundai won't back you up, but I'm not surprised either based on seeing 8 years of their obfuscation and avoidance of responsibility. A fault like this is not the consumers fault and nothing to do with the miles driven, just bad design (using 3 cells in parallel) and quality control (re: the worldwide recall in 2019).

If you decide to repair the car the battery can be obtained for less from US-based parts suppliers (seen image) like Genuine OEM Hyundai Parts and Accessories Online - Hyundai Parts Deal

If you have an independent EV shop in the area they can install one or may even be able to repair the existing pack.

View attachment 28980

The AC repair will cost 1k-2k in any denomination, another screw-up from them.
Thanks for your response! It seems that it is a bad design and even I change the battery, it may not last long enough. I am in Los Angeles area, if there is any recommendations about a reliable EV shop, I’ll really appreciate it!
 
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