*Median odometer reading when the problem happened, where owners gave one. One complaint can name several problem areas.
Electrical system
We were driving and vehicle suddenly showed multiple warnings including check forward/side safety system, check change lane assist, check inattentive driving warning, check lane safety system and then things went away and it showed 4 needs attention represented by triangle with exclamation point. We also seemed to lose power steering assist. It could drive but was "heavy". We were on highway trying to figure out what to do and what was wrong. Isolated stretch of highway at night. Suddenly the multiple warning flashed again. We were trying to determine what to do. The car seemed to drive fine except power steering seemed heavy. Suddenly a violent "jerk" occurred with vehicle sending us into…
Oct 11, 2026Service brakes
Shift-by-wire system completely locked up, the vehicle refused to power down, and potentially the brake pedal switch failed. The vehicle became unresponsive while I was in a parking garage. Thankfully this didn't happen on the road. After spending over an hour trying random "tricks" found online, I eventually managed to turn the car off and restart it. I still don't know how. Through my research, I discovered that I am far from the only owner experiencing this terrifying defect. There are numerous documented cases online of this exact vehicle platform refusing to shift out of gear or shut down. For your reference, here are just a few links detailing similar experiences: * [XXX] (The thread…
Oct 4, 2026Wheels
Today I was driving on highway when all of a sudden the psi went from 22 to 0 on my back left tire. We pulled over and the tire came off the rim and somehow sliced the tire. I checked and there were no punctures and nothing in the tire. According to tow truck driver the back right tire is getting ready to do the same thing. This is the second time within a couple months I got a flat. I've never had issues with tires of this type on other vehicle The tow truck brought vehicle to Simmons Rockwell in Elmira. Waiting for them to call
Sep 29, 2026Electrical system
Accelerator stopped working on the highway. Dash displayed an electrical system warning and speed dropped to a crawl. The hazard came from being on an interstate at night and the closing speed for everyone behind us. Fortunately we were by an exit and could drive in the shoulder at 25 mph to it. Vehicle was towed to Stew Hansen Hyundai in Clive, IA. 12-volt battery, ICU and high-voltage fuse were replaced. My VIN did not appear in NHTSA recall lookup results for this issue.
Jul 25, 2026Steering
NHTSA COMPLAINT â SHORT VERSION I am reporting a persistent, unresolved, safety-related steering defect in my 2025 Hyundai Ioniq 6 (leased 10/12/2024). Beginning in September 2025 at approximately 15,412 miles, the vehicle exhibits: (1) uncontrolled steering wheel shifting left and right at highway speeds; (2) hard pulling to the left when accelerating or decelerating; and (3) the vehicle swaying or jerking within its lane without driver input. I described the issue to the dealer as "pretty dangerous to drive" â this language is documented in Repair Order #XXX. Despite 6+ documented repair attempts over 9 service visits from September 2025 through May 2026, the defect remains…
Sep 1, 2015Electrical system
"While driving a 2025 Hyundai Ioniq 6 at approximately 10,000 miles, the vehicle experienced a sudden, catastrophic Integrated Charging Control Unit (ICCU) failure with no advance warning. The vehicle instantly experienced a total electrical shutdown while the car was on the ramp. The failure completely bypassed and disabled standard safety redundancies: the electronic parking brake/emergency brake system failed , and the 12-volt backup battery died instantly, making it impossible to activate the hazard lights. The vehicle became a completely invisible, immovable dead weight on an active roadway, presenting an imminent, extreme threat of crash, injury, or death to myself and surrounding…
Dec 26, 2025Unknown or other
Driving car at low rate of speed when ICCU unit blew. The car threw a check Electrical system and then went into limp not traveling over 35 mph. In a mile car gave another warning to pull over and stop driving. car was towed to Hyundai dealer
May 18, 2026Electrical system
The contact owns a 2025 Hyundai Ioniq 6. The contact stated that while reversing out of the garage, the vehicle suddenly stalled, with the message "12-Volt System Deactivated" displayed. The vehicle was towed to the local dealer, where it was diagnosed and determined that the computer control module had failed and needed to be replaced. The contact stated that the computer control module failure was caused by using a faulty phone charger inside the vehicle. The computer control module was replaced, and the vehicle was repaired. The manufacturer was notified of the failure. The failure mileage was 300.
Mar 13, 2026 · 300 miles
Owner complaints are submitted to NHTSA by the public and are not verified. Shown as filed (NHTSA removes personal details); long reports are shortened.
