Some members will remember that I had issues with charging my EV3 which I collected in December. The car is currently in the garage and I have a courtesy car to give them a chance to resolve it. Having tried charging on other chargers away from home (both fast charge on DC and slower charges on 7 kw, 22kw using AC) I have been able to confirm to the garage that when fast charging there is no problem, but anything using the AC port causes issues. E.g. on a 22kw it was only charging at 3.4 kw, on a 42 kw AC only it was charging at 10.3 kw. I have saved all of the screenshots from the App and provided them. I am also now charging the replacement courtesy car on my home charger with no issues. Just wonder if anyone else has had this issue since I last posted? Thanks in advance
EV3 ongoing charging issues
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ForestBev
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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.
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@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.
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 really hope you get this resolved Brian. For me (the original poster way back) it was a massive issue. I had rejected the car within 30 days and gave the garage time to resolve - which they couldn't. So I then invoked the rejection in March - it took until the end of May before I got a refund and confirmation of the rejection. To cap it all, I have just received a letter from the Motor Insurers Bureau telling me the car is still in my company name and it is not insured. I wrote to the CEO of Kia UK and also the dealer - and of course had to write to DVLA to confirm that I do not own the car. I am now going to make formal complaints to both the dealership and Kia UK as this has taken up so much of my time, which because I am self employed, has actually cost me money. It is farcical that Kia know of this issue and seem reluctant to engage with customers. When I initially complained to Kia UK they said they had never heard of a charging issue relating to the EV3 - which can't be true. Good luck.
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.
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.
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.
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.
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.
My problem is i don’t drive the car enough or charge the car enough to get proper exposure to any potential glitches.
Quite a lot of comments to my video where they have exactly the same setup and are Zappi charging with IOG are also getting the same kind of behaviour.
Brian
I know the problem. At first there were long intervals between each test charge. Eventually it appeared that a three hour charge was enough to see the problem. Once I was sure there was a car problem and started working with the dealer I had to drive several "unnecessary" miles just to enable them to investigate in a reasonable time scale as they always wanted to start with the battery down below 50%. At least the cost was low using cheap overnight charging, but I did loose some sleep keeping charging continuously monitored and all parameters recorded.
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.
Tried a test charge last night from 55%-100%.
Did a charge on IO to get it high enough to fit in the 11.30-5.30 period then turned off IO and set a schedule for 11.30-5.30
No issues.
It slows down for the last few % before 100% but that’s normal. The earlier charges on Saturday morning were my step sons ID Van.
Brian
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.
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1 Posts
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.
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.
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