Our 8-mo old 9800 mile Ioniq 5 failed to maintain its 12v battery while parked for a week. It was dead when we came back to it. Jump started successfully. I replaced the M battery with an AGM battery, which the car failed to maintain charge on after 2 weeks. At that time, while driving, the car displayed ‘Stop vehicle and check power supply’ and ‘check vehicle electrical system.’ I had a battery monitor installed which showed the car only had 44% charge left in a new 12v battery. By the time we made it to the dealer 15 minutes away, the car was barely above 20% on its battery, and was about to stop on the road. The car has been diagnosed with an ICCU failure and replacement parts are 2+ months backordered. This car appears to brick itself without much warning to the driver — and clearly Hyundai’s software-only recalls are not fixing the root cause of this dangerous safety issue.