Driving the car at 30 mph, the vehicle suddenly failed to accelerate while pressing on the gas pedal. I was forced to pull over as soon as possible to try to resolve the issue at hand. Thankfully, the breaks still worked and I was able to come to a full stop, turn off the car, and restart the car. There were no warning lamps/ messages that appeared before or after the time of the incident. (Incident occurred Aug 11) This is the second incident that my car's acceleration failed while in the middle of driving. Previously, this had happened while on the freeway during stop and go congestion (Oct 2025). This is a severe life-threatening safety concern as the failures have happened while the car is in motion during traffic. When I have taken the vehicle in for an inspection and diagnosis after the first incident, the Hyundai dealership was not able to reproduce the problem (Oct 2025) and therefore, could not provide any corrective services. I have not taken it in again for the second incident. The car is available for inspection upon request.
No injuries · No fire · No crash
1. The HORN suddenly stops working. This happened 3x in a 6 month span. The first time the horn wouldn't work all day. However, next day it did. Second time it didn't work for 3 days. Last time it stopped working completely just before Memorial Day weekend. I have read it is a known issue in Hyundai Ioniq 6 forums. 2. Forward Collision Warning is to Invasive. Once it even stopped on the freeway while trying to merge in a difficult interchange. 2 cars almost hit me from behind when my car suddenly stopped. I was however in complete control of the situation. 3. Rear Backup camera stops to much when person is 8 feet past my car. It just suddenly STOPS even when person is walking away from the car. Snaps my neck too. Also, stops at night after rain. I believe it sees a reflection and thinks it is a hazard.
No injuries · No fire · No crash
I experienced a safety critical failure in my 2024 Hyundai Ionic 6. While attempting to start the vehicle, the car displayed a red 12 Volt battery warning light, a battery discharge warning, and then refused to enter ready mode. The vehicle would only shift into neutral and was completely undrivable. After sitting for many hours, the vehicle started again, which is consistent with an intermittent ICCU/DC-DC converter dropout. This type of failure is known to cause loss of power and has been documented in NHTSA investigation PE23-011 for other Hyundai EV's. The dealership states they cannot replicate the issue and refuses further diagnostics. Hyundai corporate is deferring entirely to the dealership and will not authorize a loaner or confirm reimbursement, leaving me without transportation. They also stated they cannot commit to any repair unless the failure happens again despite the clear safety implications. This failure mode can cause sudden loss of motive power, which poses a serious risk if it occurs at highway speeds. I am reporting this because the vehicle is unsafe to operate, the failure was severe, and Hyundai is refusing to investigate the root cause unless it reoccurs. I am requesting NHTSA review this incident as part of the ongoing concerns regarding ICCU/DC-DC failures in Hyundai E-GMP vehicles.
No injuries · No fire · No crash
What component or system failed or malfunctioned, and is it available for inspection upon request? The vehicle's cellular connectivity becomes 100% non-functioning until head unit reset. This occurs some days after the car is parked in an area without cell coverage and is then driving into cell coverage area, even directly under cell towers. It appears to give up trying to connect when parked out of range and never attempts to reconnect. until manually reset. How was your safety or the safety of others put at risk? Without in-vehicle connectivity, automated crash alerts / location information is unavailable. There's NO indication there's a problem unless certain information screens are visible, and only then, the indication is the lack of any connectivity signal level bars (a missing very small and dim icon) Has the problem been reproduced or confirmed by a dealer or independent service center? Yes via live phone assistance with Hyundai bluelink support. They suggested the manual reset and observed the re-establishment of connectivity. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? Not yet. I had the car in for a recall, but the service department said there was nothing they could do until Bluelink provided a fix. There's no fix announced. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? No, just the missing icon if you know where to look on certain screens.
No injuries · No fire · No crash
Recall 272 - ICCU Ioniq 6 : ICCU fuse and update were required. Dealership ONLY did update. Did not replace fuse. Vehicle was "updated" for Recall 272 on 2/19/2025. Jenkins Hyundai Service Mgr, Savannah, confirmed on 5/18/2026 that this information is correct. In March 2026, the power seating failed to operate. This is directly related to Recall 272. However, when the vehicle was taken in for service, the dealership failed to diagnose and ONLY repaired pieces related to the seat. The vehicle was taken in on 3/18/2026 and stayed at the dealership for "repair" until 4/4/2026. This should have triggered the dealership to the Recall 272. On [XXX], within 1 hour of picking up the vehicle, all alarms went off indicating to stop driving the vehicle due to an electronic system error. DTCP1A9096. The vehicle was inoperable and had to be towed to the dealership. This should have triggered the dealership, again, to the Recall 272. On 4/22/2026, I was informed the vehicle was ready for pickup after replacement of the 12 volt battery. The issue was, again, directly related to the unrepaired recall 272. I was told that the 12 volt was not holding a charge. This should have triggered the dealership service, with the original issue, that it related back to the Recall 272. On [XXX] the power seats failed to operate. Again, related back to Recall 272. On May 9, 2026, the vehicle was taken to the dealership. On May 11, 2026 the dealership called to say that the fuse blew and was repaired. I refused to pick-up the vehicle siting extreme concerns for my safety given that the underlying issue has yet to be diagnosed. The vehicle remains that the dealership as of 5/20/206 without any further diagnostics completed. A claim with Hyundai USA was submitted on May 8, 2026. Hyundai USA has failed to take any action after multiple attempts to speak with someone. All matters, again, relate back to Recall 272. The vehicle has now been at dealership for over 40 days since March 18 INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION
No injuries · No fire · No crash