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Anybody have ICCU failure

2267 Views 49 Replies 14 Participants Last post by Bkaklinv, 6 h ago

Happytoev

Discussion Starter · 1 mo ago

I have ICCU (integrated charging control unit) failure seems to be happening on early ionic 5 models
Mine failed last week on my 2021 EV6
Interested to know symptoms that led to failure. I can charge at DC fast charge but not at home AC charge.

21 - 40 of 50 Posts

a.h

· #21 · 19 d ago

avh said:
You know how it goes, there is so much I can tell them about how to do their job. They have technical procedures they need to follow, basically they told me there is 0 volts coming out of the ICCU to charge the 12V battery and that they need to open a Techline with Kia. They also said Kia is pretty responsive to such requests and they might provide additional recommendations, however there is a backlog on getting ICCUs. I told them that I'm worried about the 12V battery losing charge and that it would be great if they can charge it and then disconnect it or it's going to die a slow death due to surfactation if it loses charge. They are waiting to hear back from Kia about ICCU replacement approval. At this point I'm 50-50% if I should keep the car after this is over. The main battery is at 90% charge and probably is going to stay there for a long while. I don't expect the main fuse to be blown because the car can still be driven, we were able to drive it on and off of the flatbed.

With respect to the fuse, it's a common thing in the replacement procedure. Our Ioniq 5 friends have been experiencing the same issues for a while now and it's pretty standard. Hopefully Hyundai and Kia are sharing their data. The ICCU is responsible for charging the main battery and the 12V, so the car will continue to be drivable as long as both batteries are charged. What tends to happen is that an ICCU failure causes the 12v battery to stop charging, and eventually it goes flat and the car is bricked. Until that happens, you can continue to drive in a reduced power mode. This information is from the Ioniq 5 people but the behaviour should be the same on the EV6.

The car itself is fantastic all things considered. My hope is that the ICCU issue is a manufacturing defect and not a design flaw. That way we know that the replacement will be fine. The very little data that is available is alluding to that so it's good news. I don't think I'll replace it and take the loss, but also I'm in Canada and we don't have any form of lemon law that can help with a fair buyback. You might have better options in your state.

I wish you a speedy repair. Hopefully there is an ICCU on a ship or truck somewhere that you can take

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silvrsi

· #22 · 18 d ago

what evidence has shown that its a manufacturing defect? I can't see any pattern on the build dates that shows its affecting only certain units. Mostly its early but there have been some failures of late. including 1 or 2 on GV60 which was only produced lately.

a.h

· #23 · 18 d ago

silvrsi said:
what evidence has shown that its a manufacturing defect? I can't see any pattern on the build dates that shows its affecting only certain units. Mostly its early but there have been some failures of late. including 1 or 2 on GV60 which was only produced lately.

I believe there is a post on a Korean forum that states this but I have not personally seen any data on it. Allegedly the part number has changed (couldn't confirm this personally), but that could mean many things including a change in the manufacturing process.

KIA isn't publicizing the issue we as consumers we are all in the dark.

paulinchris

· #24 · 18 d ago

a.h said:
I believe there is a post on a Korean forum that states this but I have not personally seen any data on it. Allegedly the part number has changed (couldn't confirm this personally), but that could mean many things including a change in the manufacturing process. KIA isn't publicizing the issue we as consumers we are all in the dark.

I had an ICCU replaced on my Ioniq 5, the new part no. is 364011XABO. This replaces 364011XAAO which was the original part no.

Reactions: 1

avh

· #25 · 18 d ago

paulinchris said:
I had an ICCU replaced on my Ioniq 5, the new part no. is 364011XABO. This replaces 364011XAAO which was the original part no.

I've read on another Ioniq forum that they replace the failed ICCUs with refurbished ones. This might explain the long backlog, they need to collect the failed ones from dealers, package them in a container and ship them to Mobis or whoever repairs these. I would expect they want to minimize the cost and are also required to use new ICCUs for the new cars. I wonder if BO means refurbished. Maybe someone with automotive manufacturing experience can chime in.

erigion

· #26 · 18 d ago

Did that user provide any proof about refurbished units or were they just speculating?

Another Ioniq 5 owner said their service advisor told them that the ICCU had been updated for MY23 cars and that's what was being installed as replacements. But, again, no proof.

The updated part # is the best sign that there's been an ICCU revision.

avh

· #27 · 15 d ago

I learned Saturday that the ICCU only has been ordered, no fuse or relay (per Kia recommendations to the dealership) no ETA just yet.

Happytoev

Discussion Starter · #28 · 15 d ago

Had my ICCU replaced after it would not AC charge took a couple of hours at the dealer works perfectly
I might add since I have had the car its on its 3rd 12v after constant drain issues now i have had a new ICCU I have seen the traction battery kick in to charge the 12v on my Bluetooth battery monitor when ever it got below a certain voltage... I have never ever seen that before in my 15 months of ownership... So i think the previous ICCU was faulty from day 1 since it never charged the 12v until now

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a.h

· #29 · 14 d ago

Happytoev said:
Had my ICCU replaced after it would not AC charge took a couple of hours at the dealer works perfectly
I might add since I have had the car its on its 3rd 12v after constant drain issues now i have had a new ICCU I have seen the traction battery kick in to charge the 12v on my Bluetooth battery monitor when ever it got below a certain voltage... I have never ever seen that before in my 15 months of ownership... So i think the previous ICCU was faulty from day 1 since it never charged the 12v until now

So you've never seen the orange dash light illuminate before?

Happytoev

Discussion Starter · #30 · 14 d ago

a.h said:
So you've never seen the orange dash light illuminate before?

Never in 15 months

a.h

· #31 · 14 d ago

Happytoev said:
Never in 15 months

That certainly explains why your battery keeps dying. At least you have it sorted out now!

Reactions: 1

kimraghni

· #32 · 12 d ago

avh said:
I learned Saturday that the ICCU only has been ordered, no fuse or relay (per Kia recommendations to the dealership) no ETA just yet.

I hope you get yours. I’m waiting on same part with no ETA and my car has been at the dealership since 4/11

Iliveinapark

· #33 · 11 d ago

paulinchris said:
I had an ICCU replaced on my Ioniq 5, the new part no. is 364011XABO. This replaces 364011XAAO which was the original part no.

BO must mean back ordered. I'm on day 49. Still no word and dealer isn't getting back to KIA customer service which I guess makes sense since they are waiting. What I don't understand is that it appears that I can buy this part online through kia.parts.

avh

· #34 · 11 d ago

Iliveinapark said:
BO must mean back ordered. I'm on day 49. Still no word and dealer isn't getting back to KIA customer service which I guess makes sense since they are waiting. What I don't understand is that it appears that I can buy this part online through kia.parts.

That is strange, I think I saw the part online for around $2,000 last week. I'm no expert but there is two things one can do, write KIA a certified letter and open a case with BBB Autoline How BBB AUTO LINE Works (bbbprograms.org)
You can also talk with a lemon law attorney, if you have a solid case their fees are covered by the manufacturer.

Iliveinapark

· #35 · 7 d ago

Anyone get their vehicle back yet? I'm still waiting and wondering if many of these parts are on the same boat.

M1cha3l

· #36 · 5 d ago

Happytoev said:
I have ICCU (integrated charging control unit) failure seems to be happening on early ionic 5 models
Mine failed last week on my 2021 EV6
Interested to know symptoms that led to failure. I can charge at DC fast charge but not at home AC charge.

Mines just failed at 15,000 miles

Iliveinapark

· #37 · 5 d ago

M1cha3l said:
Mines just failed at 15,000 miles

In what way? Did you have the pop of the fuse and iccu or can you still charge? How did the vehicle get to the dealer?

M1cha3l

· #38 · 5 d ago

Iliveinapark said:
In what way? Did you have the pop of the fuse and iccu or can you still charge? How did the vehicle get to the dealer?

12v battery wasn’t holding charge, dealer replaced, car was ok for one day then flashed up message saying electrical system failure followed by message to stop the car about 5 minutes after. Took car back to dealer where iccu failure has been identified, no replacements available in Europe so don’t know how long it’s going to be…

Iliveinapark

· #39 · 5 d ago

M1cha3l said:
12v battery wasn’t holding charge, dealer replaced, car was ok for one day then flashed up message saying electrical system failure followed by message to stop the car about 5 minutes after. Took car back to dealer where occupancy failure has been identified, no replacements available in Europe so don’t know how long it’s going to be…

That sucks. Good news is shipping to Europe is better than the USA where I am. Still waiting since April 14. No word on when the part will arrive. Best of luck to ya.

M1cha3l

· #40 · 5 d ago

M1cha3l said:
12v battery wasn’t holding charge, dealer replaced, car was ok for one day then flashed up message saying electrical system failure followed by message to stop the car about 5 minutes after. Took car back to dealer where occupancy failure has been identified, no replacements available in Europe so don’t know how long it’s going to be…

Iccu

Iliveinapark said:
That sucks. Good news is shipping to Europe is better than the USA where I am. Still waiting since April 14. No word on when the part will arrive. Best of luck to ya.

Thanks! And to you.

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