2026 Hyundai Ioniq 9 Vehicle speed control Problems

“On May 14, 2026, while traveling at highway speed in a clear passing lane with no obstacles present, the autonomous emergency braking system activated without cause and brought the vehicle to a complete stop. A following vehicle nearly rear-ended me. I recorded a voice memo immediately after the incident. A third-party crash detection application on my phone independently logged the hard stop event. A second phantom braking incident has since occurred. The vehicle is a 2026 IONIQ 9 Calligraphy leased in March 2026. …”

“I was driving on the highway at 70 mph approximately with my young daughter in the backseat. All of a sudden, the front display on my Hyundai Ioniq 9 went completely black and said no signal. I lost all dashboard information about my speed, gas gauge, horsepower etc. The only thing I could do was see how fast I was going because I was on google maps and my audiovisual screen in the center was still working. I drove 15 min with this to the dealership. The signal never came back. I had the car at the Planet Hyundai for 14 days. …”

“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 to the dealership lot. This was one day after I had dropped the car off for a route 7K mile tire rotation and filter change. They claimed they topped off fluids. …”

“Was driving down the highway when Check: electric vehicle system warning came on and car slowed suddenly and wouldnt go past 41MPH. Within a min, the car slowed down further and just as I was pulling on the shoulder. Car didnt have power to move after.”