This morning I heard a ‘pop’ sound from the back of my 2023 Ioniq 5. A short while later a warning message appeared about the cars electrical system. A minute or two later a ‘Stop Vehicle and check power supply’ message appeared. The infotainment screen said ‘A possible condition has occurred with your vehicle. A full system check is recommended TODAY.’ This is likely a malfunction of the ICCU. I have already taken this car in 2 or 3 times for recalls related to the ICCU, including one dealership visit within the last 30 days. As this is an electrical vehicle, electrical problems could leave me stranded. Without propulsion I would be at risk of getting hit on the highway. The same error message appeared at the service center. The car has been at the dealership all day, and I don’t expect to get it back anytime soon. There was no warning of the failure before today.