NHTSA Complaint #11675247 — 2024 HYUNDAI IONIQ 6

I own a 2024 Hyundai Ioniq 6 that experienced a complete 12V battery failure at under 500 miles of use, despite showing normal voltage levels (12.5V off, 13.25V while attempting a jump). The vehicle was undrivable and could not start, even though the main battery (MV) was at 70% charge. There were no prior warning lamps or messages before the failure. The vehicle had to be towed and left inoperable for nearly 30 days. According to the servicing Hyundai dealership, the root cause was determined to be a failure caused by Hyundai’s own connected app, Bluelink — which the dealer explicitly said is the root cause for my batteries failure. Hyundai Motor America, however, has refused to acknowledge this diagnosis, and despite repeated inquiries over a 60-day period, has not provided any explanation or confirmation of the cause. They continue to point back to the dealer while providing no warranty-related answers, no documentation of testing done, and no safety assurance that the failure won’t recur. The issue puts safety at risk, as the 12V battery’s failure renders the entire EV completely disabled — without warning. This creates potential for owners to be stranded, especially if the issue occurs in unsafe or remote locations. In my case, roadside assistance failed to be able to pick up the vehicle twice, resulting in a 12-hour ordeal. Hyundai has made no effort to formally investigate the potential connection to Bluelink and appears to be suppressing acknowledgment of the defect trying to offer me a one month payment instead of acknowledging or confirming this is a possible issue that can happen again in the future contingent on me saying my concerns are resolved; they're not. The resolution involved a tech having to use a third party tech line & no data within the invoice. I believe this is a broader safety issue affecting other Hyundai EVs using the Bluelink system and that NHTSA should investigate whether this poses systemic risk across affected vehicles.