It took over a month for my ICCU to get fixed. I’m in Colorado, and we have a lot of EV6s here.
I had the same issue last winter. Fortunately, the repair only took 4 days for me.
Is there anyone here with over 40k miles on their 2022/2023 EV6 still running the original ICCU?
Jason said:
I had the same issue last winter. Fortunately, the repair only took 4 days for me.
Is there anyone here with over 40k miles on their 2022/2023 EV6 still running the original ICCU?
I have a 2022, and I’m just under 70,000 km on the original ICCU. Fingers crossed it stays that way.
Jason said:
I had the same issue last winter. Fortunately, the repair only took 4 days for me.
Is there anyone here with over 40k miles on their 2022/2023 EV6 still running the original ICCU?
I’m at 73,000 miles on my 2022 GT-Line. No ICCU issues so far, and I haven’t done the recall update. The only fix I had to do was the ELE283 last year because I was having issues with charging. I replaced the 12v battery myself earlier this year.
Jason said:
I had the same issue last winter. Fortunately, the repair only took 4 days for me.
Is there anyone here with over 40k miles on their 2022/2023 EV6 still running the original ICCU?
I’m at 33k miles. I got the update and replaced my 12v with an AGM battery. So far, so good, but I’m always nervous about getting stranded somewhere.
Jason said:
I had the same issue last winter. Fortunately, the repair only took 4 days for me.
Is there anyone here with over 40k miles on their 2022/2023 EV6 still running the original ICCU?
What makes you think the ICCU failure rate is 100%?
@martin
Just from what I’ve seen on this forum and other Kia EV forums. It’s happening so much, it seems like a design flaw. Some cars with the software fix still have issues. I love my EV6, but I can see there’s a problem.
My guess is that every 2022/2023 EV6 will experience this at some point. The recall only applied a software fix for defective hardware. It seems like the 2024 models aren’t affected, probably because they upgraded the hardware, but Kia/Hyundai haven’t said much about it.
@Jason
It does seem like a common issue, but keep in mind people only post when they have problems. My 2022 has 65k miles and no ICCU issues yet.
I’d guess around 5% of 2022-2023 models will have this issue. It’s definitely more than it should be, but I don’t think it’ll be 100%, or even close to that.
Jason said:
I had the same issue last winter. Fortunately, the repair only took 4 days for me.
Is there anyone here with over 40k miles on their 2022/2023 EV6 still running the original ICCU?
I’m at 28k miles on my 2022 Wind AWD with the tech package. I got the software update, and they replaced my 12v battery. I had to jump-start it about five times before that. Luckily, I always carry a lithium battery pack just in case, so it wasn’t too inconvenient. I got a low 12v warning a few weeks ago, but it started fine the next day, and I just drove it 2500 miles without any issues.
To give you a fuller answer:
This is either the ICCU failure or a 12v battery failure, or possibly both. Even though it’s an EV, the car still uses a 12v battery for the low-voltage systems.
The ICCU (Integrated Charge Control Unit) converts power from AC to DC when charging at home, manages DC fast charging, and keeps the 12v battery charged. If the ICCU overheats, it can get damaged and eventually fail. This typically happens when owners use 11kW level 2 chargers at home because the charge port and ICCU can overheat.
Once the 12v starts to fail, the car will attempt to recharge it about 10 times before giving up. Unfortunately, it won’t notify you when it stops trying, and the battery can drop below the necessary threshold for the car to operate, causing it to shut down.
It sounds like your ICCU and 12v are both covered under warranty, so that’s the good news. The shortage of ICCU replacement parts is mostly over, so your dealership should be able to get one quickly. The bad news is that Kia requires dealerships to run diagnostics before swapping out the 12v under warranty, which can take some time.
Most likely, you’ll get a new 12v battery, a new ICCU, and all the necessary software updates. It’s super frustrating, I get it. But after this, you should be in good shape again. I recommend replacing the 12v battery every couple of years or keeping a battery booster in the car, just in case.
I know it feels bad right now, but remember that people mainly come to forums like this to share problems, so it might seem like this issue is everywhere. The reality is that it’s affecting a small percentage of EV6s (probably 1% to 3%). It’s definitely fixable, though. I just wish your dealer or the previous owner had done the recall updates sooner.
Hope this helps.
@Howard
This was incredibly helpful, thank you. The dealership confirmed today that there are no open recalls on the car, and they’ve already done the fixes.
@Howard
Out of curiosity, how did you come up with the 1-3% estimate? I don’t have any data to suggest otherwise, but I’m just wondering.