All good info to gather. Given recent discussion in other threads it might also be useful to know how often the car is DCFCed.There several poll threads regarding this. The results indicate that is is a ver small percentage
Just asking who has not had a failure really does not provide good information
What year is the I5?
What milage
When was it delivered
What country
This hardware has no affect on fast DC chargers.All good info to gather. Given recent discussion in other threads it might also be useful to know how often the car is DCFCed.
I can believe that may well be largely correct. Unfortunately Hyundai seems to either (i) have absolutely no idea what is causing the ICCU failures, or (ii) is just not saying anything meaningful about what they do know. In this information vacuum, which is completely their fault, I should think it would be useful to gather and publicize as much information as possible about the cars that are having this problem.This hardware has no affect on fast DC chargers.
This hardware is responsible for
AC EVSE charging and acting as DC-DC converter to maintain 12V battery.
Coolant issue was for I5 initially sold in Korean back to 2021 and Hyundai confirmed in Korean forum (I am Korean and checked those details). ICCU failure in US is different. My dealers onsite tech told me they opened ICCU and found no coolant leakage. Since the high voltage fuse also blew up so they think some high voltage/current killed both ICCU and fuse. Still no idea of root cause.Tesla had similar issues when they just started selling vehicles..... Mosfet part has seals around and one side is exposed to coolant for cooling....
Don't feel bad, American car makers have done much worse! Can anyone spell P-I-N-T-O ?As Korean myself I feel so embarrassed that Hyundai has done nothing to inform customers what's going on. Instead they keep silent just watching more and more I5 parking at dealers parking lot.
Short to ground is cause of fuse blowing out.Coolant issue was for I5 initially sold in Korean back to 2021 and Hyundai confirmed in Korean forum (I am Korean and checked those details). ICCU failure in US is different. My dealers onsite tech told me they opened ICCU and found no coolant leakage. Since the high voltage fuse also blew up so they think some high voltage/current killed both ICCU and fuse. Still no idea of root cause.
As Korean myself I feel so embarrassed that Hyundai has done nothing to inform customers what's going on. Instead they keep silent just watching more and more I5 parking at dealers parking lot.
Could this be a short to ground absolutely anywhere in the car, or would it be a short that is physically or electrically very close to the ICCU? (Sorry if this a stupid question! The only thing I know about EVs is how to buy a really cool-looking one.)Short to ground is cause of fuse blowing out.
This fuse is only for AC-DC inverterand DC-DC converter.Could this be a short to ground absolutely anywhere in the car, or would it be a short that is physically or electrically very close to the ICCU? (Sorry if this a stupid question! The only thing I know about EVs is how to buy a really cool-looking one.)
People's whose lightning's caught fire in the pre delivery holding lot.Who will ever want to buy an I5 or any other Hyundai EV in the future? Buyers deserve way better for a $50K car.
It may be a small percentage, but another member has posted that as of 13th April 5% of all USA sold cars were awaiting an ICCU, this amounted to 1263 cars. It may be a small percentage but that doesn't make it any easier for those owners!There several poll threads regarding this. The results indicate that is is a ver small percentage
Just asking who has not had a failure really does not provide good information
What year is the I5?
What milage
When was it delivered
What country
I was unaware one could vote more than once!Not sure of poll accuracy when it allows multiple votes
That's only the cars that are there right now, not the ones that have already come and gone nor the ones yet to break. That total number could well be between 10 and 30% eventually. Those are getting to be pretty bad odds IMO.It may be a small percentage, but another member has posted that as of 13th April 5% of all USA sold cars were awaiting an ICCU, this amounted to 1263 cars.
I totally agree with your comments.I have no idea how reliable the quoted 1263 number is but anything >1% of Ioniq 5s should be considered unacceptable to Hyundai. Of course a recall won't do any good unless they figure out what is going wrong and have a solution to replace existing ICCUs with something that works reliably.
We have not had any problems with our 2022 Ioniq 5.
He places his unprotected hands into 800v battery pack like he has 7 lifesThe fuse isn't always blown when the ICCU fails but it says it must be replaced at the same time. Seems like sometime the ICCU shorts out and blows the fuse then sometime just stops working. Unfortunately the high voltage fuse is inside the battery pack so the entire thing must be removed to replace the fuse, not a great design on Hyundai's part since now it seems to be such a common issue. One other person said their dealer had 5 cars on the lot waiting for ICCU replacement when they brought their own car in for the same reason.
This is a pretty good video showing ICCU and HV Fuse replacement.
