Experienced 81,352 miles on a 2022 Hyundai Ioniq 5 within 37 months, incurring $228 in electric charging costs, but the ICCU malfunctioned during a severe winter storm, leaving the driver stranded 40 miles from home.

The Hyundai Ioniq 5, a popular electric vehicle (EV) in daily use, has been making waves in the automotive industry. However, recent reports suggest that some models are experiencing an issue with the Integrated Charge Control Unit (ICCU), which can cause the 12V auxiliary battery to malfunction and repeatedly drain, eventually rendering the car unresponsive.

Take the case of William Jones, an Ioniq 5 owner from Virginia, who has driven his car for over 81,000 miles. During a winter storm, an ICCU failure caused his Ioniq 5 to stop charging, leaving him stranded 40 miles from home and 25 miles from the nearest dealership. Despite this setback, William's Ioniq 5 still had the original 12V battery and tire life of 66,920 miles on the original set.

The Ioniq 5 is known for its impressive efficiency, with a lifetime efficiency of 3.28 miles per kW or 254 miles when fully consuming the 77.6 kW battery. The electric drivetrain provides instant torque, allowing brisk acceleration despite what some may perceive as modest 0-60 times for a performance EV. The vehicle is solid and quiet, with no rattles even from the liftgate.

The 2023 Ioniq 5 AWD models boast an EPA-rated range of up to ~266 miles, and towing capacity is improved to 2,300 lb. The Ioniq 5's battery showed no degradation, with a last charge of 255 miles.

Hyundai seems aware of the ICCU issue, but a long-term fix remains unclear. The problem appears to be echoed across Facebook groups and owner forums, indicating it's not an isolated problem. Users strongly recommend scheduling recall repairs promptly, checking that the 12V battery is healthy, and keeping a portable jump starter handy as a backup. Owners report that even new 12V batteries can be ruined by a faulty ICCU if not addressed quickly.

As of mid-2025, no official long-term solution or definitive announcement on a permanent fix has been reported publicly. Repair parts sometimes take months to arrive, which can be a concern for Ioniq 5 owners.

Despite these issues, the Ioniq 5 remains an affordable, durable, and fun-to-drive EV. Prospective buyers are encouraged to choose dealers that are ICCU-certified to ensure any potential problems are addressed promptly. Stories like Jones's offer a roadmap for potential buyers: the Ioniq 5 is an excellent choice for an electric vehicle, just be mindful of the ICCU issue. The Ioniq 5 was serviced at Wright Way Hyundai in Waynesboro, VA.