This week marks 2 years with my 2023 EV6, and unfortunately, it’s been a rough start. The ICCU failed, and a fuse popped this morning. My car has 30,390 miles on it.
I’m currently waiting for the tow truck from Roadside Assistance. I’ll let you know how things go with the dealer once they start on the replacement.
That’s tough to hear. From what I’ve seen, the average gap between the SC327 update and an ICCU failure is usually about 2 weeks, though 4 weeks is unusual.
What’s your charging setup like? Do you mostly use Level 2 charging, or do you mix in some fast charging? And if it’s Level 2, do you lower the amperage to around 20 amps instead of 40? Just trying to gather more info. I want to avoid the dealership until my lawyer hears back from Kia. If I can stretch my ICCU a couple more months, I’ll be set.
@Drew
I mostly stick to Level 2 charging and keep my charger at 6.2 kW (28 amps). Do you know if there’s a safer power level for fast charging that might prevent this problem?
Riley said:
@Drew
I mostly stick to Level 2 charging and keep my charger at 6.2 kW (28 amps). Do you know if there’s a safer power level for fast charging that might prevent this problem?
Actually, I’ve heard that Level 2 charging can cause these issues. The fact that you reduced it to 28 amps might be why yours lasted a little longer. I’m planning to set mine to 24 amps max—or maybe lower—if I ever get my EV6 back after its second ICCU replacement.
@Drew
Sorry, that was a typo. I meant Level 2 charging. Do you or anyone else know the safest Level 2 charging power to avoid damaging the ICCU?
Riley said:
@Drew
I mostly stick to Level 2 charging and keep my charger at 6.2 kW (28 amps). Do you know if there’s a safer power level for fast charging that might prevent this problem?
I always charge at 9.6 kW and have 57,000 miles on mine with no issues so far. I did think I was headed for a problem last week, but it turned out the 12V battery had just died. Mine lasted 2.9 years, which seems about right. They didn’t use an AGM battery, so I’m not shocked it failed early, especially with Montana winters.
@Drew
Here’s some info for your data collection:
My ICCU, fuse, and 12V battery were all replaced at around 4,200 miles. The issue happened within 30 minutes of picking up the car after the SC327 update. This was just before Thanksgiving, and I got the car back 13 days later.
Charging stats:
- Fast Charging: 27% (11 sessions)
- Level 2: 28% (22 sessions, mostly on free public chargers at about 8.8 kW)
- Level 1: 45% (37 sessions)
@Drew
For your data collection, here’s my experience with a 48-amp hardwired Level 2 charger:
- Charging port overheated at 4 months
- HV pack failed at 8 months
- Charging port replaced at 13 months
- SC302 recall update done at 17 months
- ICCU failed at 23 months
- SC327 scheduled at 25 months
Total time my car has been out of service: 45 days.
@Avery
It really does seem like there’s a pattern forming here.
@Drew
So are you saying if you skip the SC327 recall, you’ll avoid an ICCU failure?
Shannon said:
@Drew
So are you saying if you skip the SC327 recall, you’ll avoid an ICCU failure?
No, I’m saying it seems like the SC327 update triggers already damaged ICCUs to fail. It’s weird, but that’s the impression I’m getting.
@Drew
Or maybe it just highlights the ICCUs that were already failing.
@Drew
Does this mean I’m safe since I only use Level 1 charging?
Tatum said:
@Drew
Does this mean I’m safe since I only use Level 1 charging?
How long have you had your EV6? Is it from 2023, and are you the first owner? Also, has your ICCU already been replaced?