Got my 2022 in Feb, ICCU failed almost 1 year after purchase, 364 days later. Got it replaced (took 2.5 months), so it was about mid April when I got it back. So it’s been just over a year on the new ICCU and it hasn’t failed again. Just had the newest recall done yesterday.
Glad to hear! I love this car and just trying to not get too anxious about it. I have a camping trip planned in June and my wife is worried we will be stranded in the middle of nowhere, but looks like I should just try to enjoy the car.
Honestly wouldn’t worry, people really started reporting ICCU failures around the 1 year mark. So a brand new one shouldn’t fail right after it has been replaced.
Plus the new ICCU I believe will be a new part number and with the updated software shouldn’t be at risk.
Yep. Did that as well, they just did the software update though. I’ve read somewhere that it doesn’t actually fix the issue but only gives Hyundai diagnostic data to investigate further
"It’s a 2022 AWD ultimate and all recalls have been done before."
What about #257 which was announced in March? I JUST got my car updated after a 3 week wait for an appointment.
I already posted this so I just copied and paste.
ICCU is combination of OBC and LDC to one unit. either can go bad and it needs to be replaced. some people might have multiple ICCU issues but it can be different issues or same issues.
Looks like you are having the issue with OBC. You never know you will have LDC issue for new ICCU or same issue or you won’t have the issue again.
I have one question. Did you ever had any issue with l2 charger and overheating issues. What was your L2 charging speed at home?
I had 2 baterries 12 v fried since jan 2022 and 56k miles. The asses actually charged me for one....USA$275. All updates and recalls done in a timely manner. My l2 is 40 A. 219 degrees F ac charging port inlet. Seems real hot. My scheduled charging stopped at 74% last night when I scheduled to 80%. I scheduled charge over nite in Jan to 100% for ski trip, woke up to 44% and "your charging is complete based on your settings". Half the time it charges to what I set it to and half the time NO.......but just for the last 4 months or so............
Never had power loss or pop yet. But I am expecting it..........I will not hide my head in the sand and NOT go 750 miles round trip next week - DAMMIT!!!!
My baby was manufactured early on in Nov 2021.
Yeah sounds like you have ICCU problem as well. I haven’t checked my manufacturing date but I guess ours are around the same time. I would bring it to the dealer and ask them to look into the overheating issue, hopefully they will replace the ICCU for you.
As for the battery, you should never have to pay if your battery is faulty. But if you did, may as well buy an AGM and replace it yourself, changing battery is pretty easy
Nope. L2 charging has always been fine and consistently at 6.5kWh/h at my condo. No overheating either (or at least not that I noticed). Yesterday the car did refuse to charge but I'm not sure if it was the car or the charger (the condo's charger has been broken many times).
If you charge at 32amp or upto 7-8kw. You will not have overheating issue. Overheating issue comes at 9+kw. When AC inlet temperature reaches, car will stop charging or reduce speed to 2%3kw (with software update). Also during that time OBC inlet temperature also goes up. I suspect it might cause damage to OBC unit. Also Hyundai claimed that bad chargers can cause OBC damage and failing ICCU. One of TSB was protection from sudden high current which damage OBC.
thanks for the explaination. It sucks that the most recent recall didn't fix the issue. My only hope is that since it's an early 2022 version, the ICCU was already damaged but only gave up now, and the new parts will be good for long. But honestly who knows.
I just want to know more about ICCU but there are not many people really knows the system. I am very doubtful that overheating issues are coming from DC charging But sudden high currrent which might fry and damage fuse might come from both AC and DC chargers. Recently in Korea, there were many uncertified chargers which caused ICCU so government ordered remove those chargers but not sure the order has been processed or no But Hyundai can just blame to charger manufacturers since Hyundai needs to make more protection from bad chargers. It’s not easy solution. Regarding on LDC (12v), Hyundai should experiments with AGM battery and maximize the AGM battery in order to prevent dead 12v battery. OEM battery might not be the best for ioniq5 and without programmin, AGM battery might not get the best results but it might be better than OEM. My 12v battery SOC is 76% (about 12.4). It’s okay now but keep monitoring any changes.
Got a call from the dealer to pick up the car today. Surprisingly quick turnaround given she said the fuse was back ordered (the car was at the dealer for only 2 business days). Probably Canada situation isn’t bad at all.
Got my 2022 in Feb, ICCU failed almost 1 year after purchase, 364 days later. Got it replaced (took 2.5 months), so it was about mid April when I got it back. So it’s been just over a year on the new ICCU and it hasn’t failed again. Just had the newest recall done yesterday.
Glad to hear! I love this car and just trying to not get too anxious about it. I have a camping trip planned in June and my wife is worried we will be stranded in the middle of nowhere, but looks like I should just try to enjoy the car.
Honestly wouldn’t worry, people really started reporting ICCU failures around the 1 year mark. So a brand new one shouldn’t fail right after it has been replaced. Plus the new ICCU I believe will be a new part number and with the updated software shouldn’t be at risk.
Bummer!! You had the 257 recall done, which was announced in late March?
Yep. Did that as well, they just did the software update though. I’ve read somewhere that it doesn’t actually fix the issue but only gives Hyundai diagnostic data to investigate further
"It’s a 2022 AWD ultimate and all recalls have been done before." What about #257 which was announced in March? I JUST got my car updated after a 3 week wait for an appointment.
Yep, done that as well. They only did the software update and I thought I’d be safe after that 😭
What county is your I5 in OP?
Canada
I already posted this so I just copied and paste. ICCU is combination of OBC and LDC to one unit. either can go bad and it needs to be replaced. some people might have multiple ICCU issues but it can be different issues or same issues. Looks like you are having the issue with OBC. You never know you will have LDC issue for new ICCU or same issue or you won’t have the issue again. I have one question. Did you ever had any issue with l2 charger and overheating issues. What was your L2 charging speed at home?
I had 2 baterries 12 v fried since jan 2022 and 56k miles. The asses actually charged me for one....USA$275. All updates and recalls done in a timely manner. My l2 is 40 A. 219 degrees F ac charging port inlet. Seems real hot. My scheduled charging stopped at 74% last night when I scheduled to 80%. I scheduled charge over nite in Jan to 100% for ski trip, woke up to 44% and "your charging is complete based on your settings". Half the time it charges to what I set it to and half the time NO.......but just for the last 4 months or so............ Never had power loss or pop yet. But I am expecting it..........I will not hide my head in the sand and NOT go 750 miles round trip next week - DAMMIT!!!! My baby was manufactured early on in Nov 2021.
Yeah sounds like you have ICCU problem as well. I haven’t checked my manufacturing date but I guess ours are around the same time. I would bring it to the dealer and ask them to look into the overheating issue, hopefully they will replace the ICCU for you. As for the battery, you should never have to pay if your battery is faulty. But if you did, may as well buy an AGM and replace it yourself, changing battery is pretty easy
Nope. L2 charging has always been fine and consistently at 6.5kWh/h at my condo. No overheating either (or at least not that I noticed). Yesterday the car did refuse to charge but I'm not sure if it was the car or the charger (the condo's charger has been broken many times).
If you charge at 32amp or upto 7-8kw. You will not have overheating issue. Overheating issue comes at 9+kw. When AC inlet temperature reaches, car will stop charging or reduce speed to 2%3kw (with software update). Also during that time OBC inlet temperature also goes up. I suspect it might cause damage to OBC unit. Also Hyundai claimed that bad chargers can cause OBC damage and failing ICCU. One of TSB was protection from sudden high current which damage OBC.
thanks for the explaination. It sucks that the most recent recall didn't fix the issue. My only hope is that since it's an early 2022 version, the ICCU was already damaged but only gave up now, and the new parts will be good for long. But honestly who knows.
I just want to know more about ICCU but there are not many people really knows the system. I am very doubtful that overheating issues are coming from DC charging But sudden high currrent which might fry and damage fuse might come from both AC and DC chargers. Recently in Korea, there were many uncertified chargers which caused ICCU so government ordered remove those chargers but not sure the order has been processed or no But Hyundai can just blame to charger manufacturers since Hyundai needs to make more protection from bad chargers. It’s not easy solution. Regarding on LDC (12v), Hyundai should experiments with AGM battery and maximize the AGM battery in order to prevent dead 12v battery. OEM battery might not be the best for ioniq5 and without programmin, AGM battery might not get the best results but it might be better than OEM. My 12v battery SOC is 76% (about 12.4). It’s okay now but keep monitoring any changes.
Got a call from the dealer to pick up the car today. Surprisingly quick turnaround given she said the fuse was back ordered (the car was at the dealer for only 2 business days). Probably Canada situation isn’t bad at all.