I just had the latest recall done for my 24 GT. It took about 2 hours to complete everything. I’ve only had the car for 1,000 miles so far. I’m hoping this prevents the 12V failure issue people keep talking about.
I don’t think it will. The batteries in these cars are pretty bad.
But at least you can replace the battery easily from any auto parts store. The ICCU, on the other hand, is not that simple.
Rayne said:
I don’t think it will. The batteries in these cars are pretty bad.
But at least you can replace the battery easily from any auto parts store. The ICCU, on the other hand, is not that simple.
When I bought my used EV6, the first thing I did was get an AGM battery, just in case.
@Joss
Smart move. I’m sticking with mine until it dies. Probably during my upcoming road trip, because why wouldn’t it?
I just got mine done too. It was a software update, not an ICCU replacement. I swapped the stock battery with an AGM myself.
Joss said:
I just got mine done too. It was a software update, not an ICCU replacement. I swapped the stock battery with an AGM myself.
Did you do that yourself or did the dealer handle it?
@biliah
I swapped it out myself.
Got it. I was hoping the recall included the battery replacement.
Joss said:
I just got mine done too. It was a software update, not an ICCU replacement. I swapped the stock battery with an AGM myself.
What AGM battery should I get for a 24 Wind model?
@Vesper
You need an H5 group size. I got mine from Walmart, but any AGM should work. If you’re doing it yourself, you’ll need 10mm and 12mm sockets and a socket wrench. It’s not too hard if you follow a video on YouTube. Make sure to protect your hands while swapping batteries.
You’re lucky. My dealer is booked until mid-January and they want to keep the car all day. If you got an ICCU replaced in two hours, your dealer must be super efficient.
Luca said:
You’re lucky. My dealer is booked until mid-January and they want to keep the car all day. If you got an ICCU replaced in two hours, your dealer must be super efficient.
From what you’ve said, it seems like it was just a software update and not a full ICCU replacement.
Is the battery covered under warranty?
Noor said:
Is the battery covered under warranty?
Yes, it’s covered for three years.
If you’re worried about the 12V issue, you should consider switching to a LiFePO4 smart battery.
Stevie said:
If you’re worried about the 12V issue, you should consider switching to a LiFePO4 smart battery.
What does that involve, and how does it fix the problem?
Stevie said:
If you’re worried about the 12V issue, you should consider switching to a LiFePO4 smart battery.
What does that involve, and how does it fix the problem?
I had constant 12V issues until I got a better battery. My car has a lot of accessories that run even when it’s off. LiFePO4 batteries handle the load better. Even if the ICCU stops charging below 25%, you won’t end up with a dead battery in a few hours. The recalls didn’t fix my issues completely, but this upgrade helped a lot.
@Stevie
Interesting. What battery did you get, and was the installation straightforward?
Stevie said:
If you’re worried about the 12V issue, you should consider switching to a LiFePO4 smart battery.
What does that involve, and how does it fix the problem?
Switching batteries doesn’t solve the root problem. It just delays it. The real issue is the defective ICCU and its poor charging logic. A better battery might last longer, but the stock one isn’t the problem—it’s the ICCU. I’ve been tracking mine with an OBD2 scanner, and the recent patch seems to handle charging better. Time will tell if it’s a permanent fix.
These updates will keep coming, but I don’t think they fully prevent ICCU failures. Mine failed at 33k miles despite doing all the updates.
That said, an ICCU failure isn’t the end of the world. The dealer keeps your car for a few days, and you either get a loaner or Kia covers a rental.