Re AC home charging.
I bought my EV3LR in May 2025.
I had 2 breakdown events which were eventually resolved as there was a 12v battery fault which was replaced.
Since day one I have had interruptions in the overnight home charging and failure to charge to the full 70%.
I use the current setting of 60% as interruptions are described with 90 and 100% current settings.
The dealership service department doesn’t Seem to have much understanding of the AC charging aspect so any comments are appreciated.

 

That looks okay, but sometimes for me it needed a continuous charge of a few hours to see the step down. As time went on the step down tended to occur sooner on average. Too soon to draw a conclusive opinion, I would suggest keep monitoring and recording what happens. I only involved the dealer after it became reasonably predictable and I had some screen shots to show them.

 

I know this is neither a EV3 or Zappi.
But I am using IOG for charging.
Noticed earlier that it was down to 0.5 kW, but no phone to grab a pic & shot back upto 7 kW by the time I did. Caught this later though.

 

It would be great if @mateybloke 's problem is a software glitch that goes away. I am sure that there are many cars that have not experienced an ICCU failure. However the ICCU appears to have been giving problems on all Kia/Hyundai/Genesis models based on the E-GMP platform. There have been several firmware updates but problems have persisted; whether the latest update will work only time will tell. There was no rush to judgment or overthinking in my case and I (and the dealer) spent a lot of time and effort investigating my issue and all firmware updates were applied and tested before Kia authorised replacement of the ICCU. Looking back over this thread and searching other forums and YouTube will show that for several people this has been no glitch that will go away. Kia/Hyundai/Genesis do not agree to replace an ICCU without investigation. Some cars have had more than one replacement. I do not regret spending the time and effort to investigate and get the faulty unit replaced as my EV3 is now charging reliably and I hope the latest firmware updates will prevent any damage to the new ICCU but only time will tell.

 

Totally ageee with Soula comments above. These ICCU issues are not going to go away. Every time I charge I expect to see in the morning the dreaded signs of limited charging rate. Luckily I am retired but if I was needing to go off on business trips regularly I am not sure I could live with this potential problem the Kia/ Hyundia appear to have.

 

@mateybloke

Just seen your youtube video about charging dropping to 1.5kW. I am sorry to say it looks like your ICCU is faulty. A few points from my experience.

1. If you want to test on a Zappi, set the Zappi to FAST mode to avoid any possibility that it is related to Intelligent Octopus Go (IOG). (don't forget to disable smart charging in the Octopus app). When charging drops check the PWM on the Zappi, if it is 53% then the Zappi is offering full rate.

2. If you want to check on a public or other charger, make sure it is single phase 7kW as 11kW charging will not show the issue. Check by my dealer when I had the issue. (I suspect it is because the load a distributed so less than 7kW per phase.)

3. Driving the car for a short distance reset it and charging started again at 7kW before it later drops back to approx 1.5kW.

4. The time taken for charging to drop to 1.5kW can vary from tens of minutes to hours.

5. Lowering the charging rate using the Kia app will mask the problem. I could charge at 90% without problems.

6. Eventually, while conducting a test charge on a dealer's 7kW charger, the car failed to charge at all after about 10 minutes. Tried a second time with same result. This is what finally got Kia to agree to replacing the ICCU. The car would however still charge on my Zappi with it set to 90% in the Kia app.

7. All firmware updates had been applied, but had failed to clear the problem (I suspect that the damage had already been done).

8. Since ICCU was replaced charging is back to full power on my Zappi, including with IOG. Not sure but it looks like there may now be an initial ramp up to full power over a short period (soft start). I am hoping this will be an end to my ICCU problem, but will need several more months to start to have confidence rather than hope.

9. The number of reports of ICCU problems does seem to have reduced of late, so maybe the most recent firmware update has been successful in reducing the risk of damage or maybe most of the susceptible ICCUs have now failed and been replaced, but as in point 8 above it will take a long time to gain confidence, especially as this has been ongoing since the introduction of the EGIMP platform and Kia have not explained the problem and the fix.

@mateybloke

Just seen your youtube video about charging dropping to 1.5kW. I am sorry to say it looks like your ICCU is faulty. A few points from my experience.

1. If you want to test on a Zappi, set the Zappi to FAST mode to avoid any possibility that it is related to Intelligent Octopus Go (IOG). (don't forget to disable smart charging in the Octopus app). When charging drops check the PWM on the Zappi, if it is 53% then the Zappi is offering full rate.

2. If you want to check on a public or other charger, make sure it is single phase 7kW as 11kW charging will not show the issue. Check by my dealer when I had the issue. (I suspect it is because the load a distributed so less than 7kW per phase.)

3. Driving the car for a short distance reset it and charging started again at 7kW before it later drops back to approx 1.5kW.

4. The time taken for charging to drop to 1.5kW can vary from tens of minutes to hours.

5. Lowering the charging rate using the Kia app will mask the problem. I could charge at 90% without problems.

6. Eventually, while conducting a test charge on a dealer's 7kW charger, the car failed to charge at all after about 10 minutes. Tried a second time with same result. This is what finally got Kia to agree to replacing the ICCU. The car would however still charge on my Zappi with it set to 90% in the Kia app.

7. All firmware updates had been applied, but had failed to clear the problem (I suspect that the damage had already been done).

8. Since ICCU was replaced charging is back to full power on my Zappi, including with IOG. Not sure but it looks like there may now be an initial ramp up to full power over a short period (soft start). I am hoping this will be an end to my ICCU problem, but will need several more months to start to have confidence rather than hope.

9. The number of reports of ICCU problems does seem to have reduced of late, so maybe the most recent firmware update has been successful in reducing the risk of damage or maybe most of the susceptible ICCUs have now failed and been replaced, but as in point 8 above it will take a long time to gain confidence, especially as this has been ongoing since the introduction of the EGIMP platform and Kia have not explained the problem and the fix.

@mateybloke

Just seen your youtube video about charging dropping to 1.5kW. I am sorry to say it looks like your ICCU is faulty. A few points from my experience.

1. If you want to test on a Zappi, set the Zappi to FAST mode to avoid any possibility that it is related to Intelligent Octopus Go (IOG). (don't forget to disable smart charging in the Octopus app). When charging drops check the PWM on the Zappi, if it is 53% then the Zappi is offering full rate.

2. If you want to check on a public or other charger, make sure it is single phase 7kW as 11kW charging will not show the issue. Check by my dealer when I had the issue. (I suspect it is because the load a distributed so less than 7kW per phase.)

3. Driving the car for a short distance reset it and charging started again at 7kW before it later drops back to approx 1.5kW.

4. The time taken for charging to drop to 1.5kW can vary from tens of minutes to hours.

5. Lowering the charging rate using the Kia app will mask the problem. I could charge at 90% without problems.

6. Eventually, while conducting a test charge on a dealer's 7kW charger, the car failed to charge at all after about 10 minutes. Tried a second time with same result. This is what finally got Kia to agree to replacing the ICCU. The car would however still charge on my Zappi with it set to 90% in the Kia app.

7. All firmware updates had been applied, but had failed to clear the problem (I suspect that the damage had already been done).

8. Since ICCU was replaced charging is back to full power on my Zappi, including with IOG. Not sure but it looks like there may now be an initial ramp up to full power over a short period (soft start). I am hoping this will be an end to my ICCU problem, but will need several more months to start to have confidence rather than hope.

9. The number of reports of ICCU problems does seem to have reduced of late, so maybe the most recent firmware update has been successful in reducing the risk of damage or maybe most of the susceptible ICCUs have now failed and been replaced, but as in point 8 above it will take a long time to gain confidence, especially as this has been ongoing since the introduction of the EGIMP platform and Kia have not explained the problem and the fix.

Hopefully nothing more than a temporary software glitch that has been rectified by subsequent software updates. However if it proves to be more than that @mateybloke is the person to find an answer. I am no electric car expert, far from it, but I did learn from my previous electric car that sometimes, just don't overthink it, give it a couple of days and the problem sometimes just vanishes never to return again.

 

One other thing, the dealer found it useful when I was able to provide screen shorts of the charging history from the Myenergi app as these clearly showed the drop in charge level. I also gave them screenshots from the Kia app to show how the car was set for charging.

 

When the problem started for me it was only occasionally but after a month or so it became all the time.


I never had problems with solar charging or charging below 100% charge current, nor was there problems charging on the dealer's 11kW charge point.

I don't believe the dealer ever found any error reports in the car, even when the charge failed completely. They also said that the Kia system did not show others reporting this problem, even though there were reports on this forum. I do not doubt my dealer as they worked with me to investigate the problem.

I would suggest that you try to do as much charging as possible in single uninterrupted charges of several hours at 100% charge current on a 7kW charge point. You should be okay to disable Octopus smart charging for a month and only charge when battery level is below 50% when possible. Better to prove the issue rather than have it drag on. If you absolutely must get a full charge for a particular journey, then the the 90% charge current fudge should work.

Good luck.

 

@mateybloke

Just seen your youtube video about charging dropping to 1.5kW. I am sorry to say it looks like your ICCU is faulty. A few points from my experience.

1. If you want to test on a Zappi, set the Zappi to FAST mode to avoid any possibility that it is related to Intelligent Octopus Go (IOG). (don't forget to disable smart charging in the Octopus app). When charging drops check the PWM on the Zappi, if it is 53% then the Zappi is offering full rate.

2. If you want to check on a public or other charger, make sure it is single phase 7kW as 11kW charging will not show the issue. Check by my dealer when I had the issue. (I suspect it is because the load a distributed so less than 7kW per phase.)

3. Driving the car for a short distance reset it and charging started again at 7kW before it later drops back to approx 1.5kW.

4. The time taken for charging to drop to 1.5kW can vary from tens of minutes to hours.

5. Lowering the charging rate using the Kia app will mask the problem. I could charge at 90% without problems.

6. Eventually, while conducting a test charge on a dealer's 7kW charger, the car failed to charge at all after about 10 minutes. Tried a second time with same result. This is what finally got Kia to agree to replacing the ICCU. The car would however still charge on my Zappi with it set to 90% in the Kia app.

7. All firmware updates had been applied, but had failed to clear the problem (I suspect that the damage had already been done).

8. Since ICCU was replaced charging is back to full power on my Zappi, including with IOG. Not sure but it looks like there may now be an initial ramp up to full power over a short period (soft start). I am hoping this will be an end to my ICCU problem, but will need several more months to start to have confidence rather than hope.

9. The number of reports of ICCU problems does seem to have reduced of late, so maybe the most recent firmware update has been successful in reducing the risk of damage or maybe most of the susceptible ICCUs have now failed and been replaced, but as in point 8 above it will take a long time to gain confidence, especially as this has been ongoing since the introduction of the EGIMP platform and Kia have not explained the problem and the fix.

 

@mateybloke

Just seen your youtube video about charging dropping to 1.5kW. I am sorry to say it looks like your ICCU is faulty. A few points from my experience.

1. If you want to test on a Zappi, set the Zappi to FAST mode to avoid any possibility that it is related to Intelligent Octopus Go (IOG). (don't forget to disable smart charging in the Octopus app). When charging drops check the PWM on the Zappi, if it is 53% then the Zappi is offering full rate.

2. If you want to check on a public or other charger, make sure it is single phase 7kW as 11kW charging will not show the issue. Check by my dealer when I had the issue. (I suspect it is because the load a distributed so less than 7kW per phase.)

3. Driving the car for a short distance reset it and charging started again at 7kW before it later drops back to approx 1.5kW.

4. The time taken for charging to drop to 1.5kW can vary from tens of minutes to hours.

5. Lowering the charging rate using the Kia app will mask the problem. I could charge at 90% without problems.

6. Eventually, while conducting a test charge on a dealer's 7kW charger, the car failed to charge at all after about 10 minutes. Tried a second time with same result. This is what finally got Kia to agree to replacing the ICCU. The car would however still charge on my Zappi with it set to 90% in the Kia app.

7. All firmware updates had been applied, but had failed to clear the problem (I suspect that the damage had already been done).

8. Since ICCU was replaced charging is back to full power on my Zappi, including with IOG. Not sure but it looks like there may now be an initial ramp up to full power over a short period (soft start). I am hoping this will be an end to my ICCU problem, but will need several more months to start to have confidence rather than hope.

9. The number of reports of ICCU problems does seem to have reduced of late, so maybe the most recent firmware update has been successful in reducing the risk of damage or maybe most of the susceptible ICCUs have now failed and been replaced, but as in point 8 above it will take a long time to gain confidence, especially as this has been ongoing since the introduction of the EGIMP platform and Kia have not explained the problem and the fix.

Cheers for the Info. It’s a very difficult thing to replicate since it’s only happened to me twice ever.
I’ve tried replicating it several times since to no avail. It just ramps up normally to 7kW or slightly higher.

One thing i have noticed is that when i plug in and wait for it to start on IOG i initially get a red error charging light but it records no DTC. Then IOG starts as it should slightly delayed 2-3 minutes later and charges fine after that.
If i disable IOG and charge on Solar only it starts instantly with no error. I will have to try that in fast charge mode.

I will check my PWM reading on the Zappi but i’m pretty sure it’s getting the normal figure.

When i first had the problem way back in January i’m pretty sure i disabled IOG reconnected and tried a fast charge and it stayed at 1.5kW

Brian

 

I have had the update and after reading these recent posts checked my chargers report for the last charge which was from 40% to 78% and it didn't drop below 7.4kw which is what my charger is rated at. I can set the charger to charge at any rate up to the max so later in the morning as an experiment I set it to charge at 1.9Kw for the extra couple of % and that was also stable.

 

I’ve not been on here for a while, but just received a notification of 15 new messages! Sorry to hear people are still have ICCU problems.

As per my previous posts, we have not had any issues with charging at all, since the dealer swapped our EV3 for an identical one, (Better choice of colour for us 😊) as our EV3 was in the dealer for 3 plus weeks, while we had a loan EV3, very early on, when the ICCU problems started, and they didn’t know what the fix was,I do hope that these problems can be resolved quickly for everyone involved.

 

Maybe that is the ICCU update doing it's thing if it's getting too hot.

Anyone else with same issue?

 

I would make sense it did always used to be 7 until an update came along a while back.

 

Bad news after just over a month, the car has started with the drop in charge again, dropping back to 90% charge in the meantime time. Not sure what to do now. Really like the car...

 

Oh dear, I was just starting to think that it has been a while since the last ICCU failure report and hoping that the most recent update may have done some good.

 

I am awaiting an ICCU replacement and the latest firmware update. It would be great if this was a complete and lasting solution to the Hyundai / Kia ICCU problem on the e-GMP platform. Sadly this is only the most recent of several attempts at a solution and only time will tell if they have finally found the answer. It is doing considerable reputational damage now and I am seeing reports of people deciding against Hyundia / Kia cars or saying only lease, don't buy, as there is no confidence that the ICCU will not fail on multiple occasions and even after the end of warranty period.

Being optimistic, I live in hope but, being realistic, maybe not expectation.

 

Our Kia Souls is over 4 years old and still has original 12V battery. No special treatment or additional charging. Never given a problem. Purchased a boost charger soon after buying the car, just in case, but never used it.

Always use Utility or Drive mode when car is unlocked. Never use Accessory mode. Don't leave the car for long periods with main battery below 20%.

 

Thanks, my fear is that it was sub 20% for a day and half, in this day and age that can't be termed too long on a new car?

 

Over 4 years on original battery here & no issues. Only had 9K when I got it 18 months ago, so spent a long time sat doing nothing.
Pretty certain that there was a bad batch of batteries at one point, but they will all have long been replaced.
Many issues are owner related, such as sat in ACC mode, rather than leaving car turned on or utility mode. Washing car/working on car in same mode. Leaving charge below 20% so BMS does not top 12V side up.

 

Technology Connections just did a piece on his Ioniq 5 ICCU failure - and also his brother’s Ioniq 6 ICCU failure …

Looks like Kia/Hyundai are gonna get a large smack in the face if they continue with this approach to their cars’ problems.
4 and 5 year old Niro and Souls still losing their 12 Volt battery- problem still not sorted - 5?years !
4 yo Soul here, and it’s on it’s 3rd 12-volt battery… had to buy last one myself because it was just before a holiday. Got a new Yuasa, and it’s failing now - after a year.
Will probably shell out on a deep-discharge battery next.

 

No only sorts a few issues and weeks later same problem comes back

 

Update, my ICCU is now in stock and the car is booked in for the 3rd July. My car in other news was completely dead this morning. RAC came out and have diagnosed a faulty 12v battery, is my car cursed or have other others had this new pain. I feel like rejecting the car after 5months of these issues.

 

Hi MangoNo5
If you are not aware, you will need to be sending in your letter of rejection to the dealer before six months is up. Your rights under the Consumer Rights Act gets weaker after 60 days. However if your car has a history of serious issues starting inside 30 days of ownership you may have some hope to return and get a refund of sorts. Good luck.

 

Mine is due to be replaced in 2 weeks.
I'll stick with charging at 90% after that.

 

The only problem I can see with sticking with 90% charging, once the ICCU is replaced, is that you may mask a future fault, which could subsequently result in total failure in the future.

Once replaced, I intend to fully test the new ICCU to be sure that I have "a good one".

 

I have the reducing consumption ICCU problem. i.e. it drops to 1.6 KWh charging or whatever it is. I've been AC charging (at home on a 7.2 Kw) for several weeks now having set the car to only take 90% of the max rate. I have the car booked in for a diagnostic but it is several weeks away. I'm retired and don't do that many miles and rarely do I have to be somewhere urgently. Given the number of issues with ICCU I'm beginning to wonder whether I might just stick with what I have rather than get a replacement ICCU in however many weeks/months it might take. Better the devil you know. I'm slightly concerned that if I don't report a known error that it might somehow affect my warranty in the future in some way. Thoughts? On sticking and warranty point. Many Thanks

 

I have the reducing consumption ICCU problem. i.e. it drops to 1.6 KWh charging or whatever it is. I've been AC charging (at home on a 7.2 Kw) successfully for several weeks now having set the car to only take 90% of the max rate(ie approx 6.5 KWh). I have the car booked in for a diagnostic but it is several weeks away.

I'm retired and don't do that many miles and rarely do I have to be somewhere urgently.

Given the number of issues with ICCU I'm beginning to wonder whether I might just stick with what I have rather than get a replacement ICCU in however many weeks/months it might take. Better the devil you know.

I'm slightly concerned that if I don't report a known error that it might somehow affect my warranty in the future in some way.

Thoughts? On sticking and warranty point.

 

No, get it replaced as soon as you can.

As you can be sure that at some point it will stop working & it will be when you need it the most & dealer will not have any in stock.

 

At the end of April my dealer obtained and fitted a replacement ICCU, which was sent out to Belfast from Korea, within a matter of a few days.

 

Update on fix, I took my car to the dealer for the ICCU update, after testig there it did not fix the problem so will now wait 2 weeks for car to be booked in for ICCU replacement. It has now taken 4months since the problem occurred, disappointing with how this is going,my dealer blames Kia on delays.

 

Yes I am booked in to get a new ICCU in my EV3 to solve this - there was a 6 week wait though given that this is a widespread problem.

 

Shame that some Kia dealers treat customers so poorly. I thought Ford were awful, sorry to hear Kia maybe similar 😞.

 

As you know they are franchises & Will not be getting paid much for the work.
Even getting services booked in has to be done weeks in advance. I guess they have cut staff down & simply do not want to employ more, so long delays are the norm.

 

I don’t ‘expect’ a problem after home charging, but I certainly ‘fear’ it. To the extent that if I need the car for something important, I won’t leave charging until the night before. I will instead charge up the day before that, so that if there should be a problem, I have a whole day to find a solution or workaround.

Which I’ll be honest, is far from ideal