https://plaincars.com/make/hyundai-ioniq-9 New NHTSA complaints and recalls filed for the Hyundai Ioniq 9. en-us Sun, 18 Oct 2026 04:36:04 GMT https://plaincars.com/make/hyundai-ioniq-9 https://plaincars.com/make/hyundai-ioniq-9#recall-26V314000-hyundai-hyundai-ioniq-9-2026 Tue, 19 May 2026 00:00:00 GMT Hyundai Motor America (Hyundai) is recalling certain 2025 Ioniq 5 and 2026 Ioniq 9 vehicles. The fasteners for the rear suspension may loosen and detach, which can result in a loss of vehicle control. https://plaincars.com/make/hyundai-ioniq-9 https://plaincars.com/make/hyundai-ioniq-9#recall-26V068000-hyundai-hyundai-ioniq-9-2026 Fri, 06 Feb 2026 00:00:00 GMT Hyundai Motor America (Hyundai) is recalling certain 2025-2026 IONIQ 5 and 2026 IONIQ 9 vehicles. The high voltage battery system may contain an improperly tightened bus bar, which can cause a short-circuit. https://plaincars.com/make/hyundai-ioniq-9 https://plaincars.com/make/hyundai-ioniq-9#complaint-2171971 Sat, 31 Jan 2026 00:00:00 GMT I purchased the car on January 13 2026 the car was dellry to my house that night around 5:50 pm MT two days later my Control Unit (CU) went bad the car went back to the dealership with the first available appointment on the 20th I was told the CU needed to be replace. the car was ready for pick up on the 29th. I received the car at 5:40 pm MT on January 30th around 6:39am MT. I started the car and https://plaincars.com/make/hyundai-ioniq-9 https://plaincars.com/make/hyundai-ioniq-9#complaint-2167043 Fri, 16 Jan 2026 00:00:00 GMT The Integrated Charge Controller Unit (ICCU) failed at 7622 miles, causing the pyrotechnic fuse to fail as well. The vehicle was towed to the nearest Hyundai dealer. Repairs took 2 and 1/2 weeks due to parts availability. My wife, who was driving at the time, could have been stranded. Fortunately, the failure occurred close to our home. The dealer did confirm the fault code and failure of the ICCU https://plaincars.com/make/hyundai-ioniq-9 https://plaincars.com/make/hyundai-ioniq-9#complaint-2162914 Sun, 04 Jan 2026 00:00:00 GMT The vehicle was plugged in overnight. To the set 80% limit. When I got up to leave for work and take family out. The vehicle check electrical system warning ⚠️ came on and the then the vehicle would not drive past 41mph. Then in a few minutes dropped down to 28mph and would not go any further. Took the car to dealership which was miles away and 18 miles per hour was my top speed when I pulled in https://plaincars.com/make/hyundai-ioniq-9 https://plaincars.com/make/hyundai-ioniq-9#complaint-2162915 Sun, 04 Jan 2026 00:00:00 GMT The vehicle was plugged in overnight. To the set 80% limit. When I got up to leave for work and take family out. The vehicle check electrical system warning ⚠️ came on and the then the vehicle would not drive past 41mph. Then in a few minutes dropped down to 28mph and would not go any further. Took the car to dealership which was miles away and 18 miles per hour was my top speed when I pulled in https://plaincars.com/make/hyundai-ioniq-9 https://plaincars.com/make/hyundai-ioniq-9#complaint-2162916 Sun, 04 Jan 2026 00:00:00 GMT The vehicle was plugged in overnight. To the set 80% limit. When I got up to leave for work and take family out. The vehicle check electrical system warning ⚠️ came on and the then the vehicle would not drive past 41mph. Then in a few minutes dropped down to 28mph and would not go any further. Took the car to dealership which was miles away and 18 miles per hour was my top speed when I pulled in https://plaincars.com/make/hyundai-ioniq-9 https://plaincars.com/make/hyundai-ioniq-9#complaint-2157910 Tue, 16 Dec 2025 00:00:00 GMT While driving on the freeway utilizing Highway Drive Assist, I suddenly received a warning on the heads up display stating that assisted systems were unavailable, at which point the Adaptive Cruise Control & Lake Keep Assist both deactivated. I pressed the button on the steering wheel to reactive the system and received "conditions not met" error. At this point, I placed my foot on the accelerat https://plaincars.com/make/hyundai-ioniq-9 https://plaincars.com/make/hyundai-ioniq-9#complaint-2157911 Tue, 16 Dec 2025 00:00:00 GMT While driving on the freeway utilizing Highway Drive Assist, I suddenly received a warning on the heads up display stating that assisted systems were unavailable, at which point the Adaptive Cruise Control & Lake Keep Assist both deactivated. I pressed the button on the steering wheel to reactive the system and received "conditions not met" error. At this point, I placed my foot on the accelerat https://plaincars.com/make/hyundai-ioniq-9 https://plaincars.com/make/hyundai-ioniq-9#complaint-2157912 Tue, 16 Dec 2025 00:00:00 GMT While driving on the freeway utilizing Highway Drive Assist, I suddenly received a warning on the heads up display stating that assisted systems were unavailable, at which point the Adaptive Cruise Control & Lake Keep Assist both deactivated. I pressed the button on the steering wheel to reactive the system and received "conditions not met" error. At this point, I placed my foot on the accelerat https://plaincars.com/make/hyundai-ioniq-9 https://plaincars.com/make/hyundai-ioniq-9#complaint-2149865 Tue, 18 Nov 2025 00:00:00 GMT When my Ioniq 9 was in reverse, the brake did not work. The car kept rolling and I had to turn it off to stop the car. https://plaincars.com/make/hyundai-ioniq-9 https://plaincars.com/make/hyundai-ioniq-9#complaint-2133643 Wed, 24 Sep 2025 00:00:00 GMT Occasionally while driving my IONIQ 9 in sunny conditions with glasses on while utilizing Lane Keep Assist and the Adaptive Cruise Control system the car flashes a Warning about keeping your attention on the road, and then continues on beeping and chiming before ultimately completely stopping in the middle of the road unless you disengage the Lane Keeping Assist and Adaptive Cruise Control. I beli https://plaincars.com/make/hyundai-ioniq-9 https://plaincars.com/make/hyundai-ioniq-9#complaint-2133644 Wed, 24 Sep 2025 00:00:00 GMT Occasionally while driving my IONIQ 9 in sunny conditions with glasses on while utilizing Lane Keep Assist and the Adaptive Cruise Control system the car flashes a Warning about keeping your attention on the road, and then continues on beeping and chiming before ultimately completely stopping in the middle of the road unless you disengage the Lane Keeping Assist and Adaptive Cruise Control. I beli https://plaincars.com/make/hyundai-ioniq-9 https://plaincars.com/make/hyundai-ioniq-9#complaint-2133645 Wed, 24 Sep 2025 00:00:00 GMT Occasionally while driving my IONIQ 9 in sunny conditions with glasses on while utilizing Lane Keep Assist and the Adaptive Cruise Control system the car flashes a Warning about keeping your attention on the road, and then continues on beeping and chiming before ultimately completely stopping in the middle of the road unless you disengage the Lane Keeping Assist and Adaptive Cruise Control. I beli https://plaincars.com/make/hyundai-ioniq-9 https://plaincars.com/make/hyundai-ioniq-9#complaint-2104447 Fri, 27 Jun 2025 00:00:00 GMT My ICCU failed, which caused a fuse to blow and some electrical wiring in the car to melt. This caused the car to completely deplete the 12V battery, which left the car completely inoperable. The vehicle was towed to a Hyundai dealership, where they ordered the relevant parts and changed them under warranty. I was without the car for roughly two weeks.