There is no sign of the EV5 having any issues with the ICCU, although it’s not been out for long.
As far as I’m aware, the EV4 doesn’t.
The Integrated Charging Control Units (ICCUs) issue isn’t new across Hyundai/Kia/Genesis range and dates back to 2021/22. In some cases its caused by a MOSFET transistor.
Kia launched a TSB last year for a firmware update and where necessary a replacement ICCU for the EV3. Dealers were replacing the ICCU and not updating the firmware, which led to ongoing issues.
I’m shocked they haven’t been sued!