2022 Hyundai Ioniq 5

Active powertrain failure on my 2022 Ioniq 5 SE, which poses an immediate and severe safety risk. On May 18, 2026, the vehicle suffered a catastrophic loss of power and a complete failure to charge. At Murdock Hyundai of Lindon, technicians diagnosed it with trouble code P1AA600 and recommended a total high-voltage battery pack replacement at a cost of over $44,000. Immediate Fire & Safety Risk: The dealership technician explicitly warned me that if I continue to attempt to drive or plug in the vehicle, it will cause an electrical fire. Visible Electrical Arcing: The service technician stated that they physically witnessed an electrical arc occur when connecting the vehicle's high-voltage charging components. The technician's diagnosis strongly points to a catastrophic internal short circuit or a failed Power Relay Assembly (PRA) within the high-voltage housing. The company completely stopped working and Hyundai would not help. This has been an ongoing issue with other cars too. I tried multiple times working with both the deal and Hyudnai.

Component that failed: High-voltage main battery pack assembly and associated electrical architecture. The vehicle and the component are currently located at my home and are available for inspection upon request. Description of Incident & Safety Risk: While attempting to drive the car and when connected to the vehicle to a standard charging infrastructure, a catastrophic internal failure occurred within the high-voltage system (Diagnostic Trouble Code P1AA600). Upon attempting to plug the vehicle in, active electrical arcing and physical sparks emanated from the high-voltage architecture. This structural manufacturing component defect presents an immediate, severe, and active fire and safety hazard to the occupants, the vehicle, and any surrounding property. The vehicle is currently completely un-driveable and unsafe to connect to any power grid. Dealer Confirmation & Inspection: The vehicle was driven to a certified manufacturer dealership service center. A certified dealership technician formally inspected the vehicle, reproduced the fault, and explicitly documented the active electrical arcing and sparking coming from the high-voltage pack in the official service records. The vehicle history was also escalated to the manufacturer's executive consumer affairs team, who acknowledged the intake statement but refused to authorize a remedy or repair. Warning Symptoms: There were no long-term warning lamps or prior symptoms leading up to the structural breakdown. The high-voltage system failure occurred suddenly and catastrophically, immediately triggering a critical malfunction indicator on the dashboard cluster at the time of the failure.

The 2022 ioniq 5 was bought used with 43k MI and within 2k miles of driving in 50-85F climate and 7kwh l2 charging I witnessed the orange check EV light flash while I was driving on the highway. I exited and powrr cycled the car and the EV light remained. The next morning the orange check EV light was gone. I went to the dealership for a diagnostic and they said they could not replicate the error code or had found any history of the error code coming up without proving to me or showing me any substantial evidence that they tested for anything at the Escondido Hyundai dealership in California. I escalated the issue with Hyundai corporate and was assigned a case manager that ultimately gave me the same answer that they could not replicate any codes and that I should take the car back and drive normally. After extensive research I found that the orange check ev light is a more dangerous sign than the red check ev light because it indicates that the ICCU unit is about to fail. Research shows that due to thermal stress the ICCU will inevitably fail after the orange check AV light comes on. Further research shows that Hyundai had officially stated a 1% failure rate for the ICCU unit in all of their EVs built on the e-gmp cars to date but some projections are at 10% failure rate or higher and that Hyundai Kia is downplaying the issue similarly to how they tried to do the same with the Theta 2 GDI engines that they had been sued and were responsible to pay over $300 or so million dollars as well as $24 million to a employee whistleblower a few years ago. I highly suggest that the nhtsa or other organizations that have the power to force Hyundai Kia to do the right thing so that no further lives are at risk from these ICCU units that have flawed designs that have not been fixed,only remedied via software update or replaced with refurbished units at the most with inevitable failure as thermal stress is experienced.

I am filing this complaint regarding Hyundai Motor America's failure to complete a vehicle repair in a timely manner on my 2022 Hyundai Ioniq 5 (VIN: [XXX] ), which has been at Hyundai of Leander, an authorized Hyundai service center in Leander, Texas, since September 2025 — more than six months — awaiting a replacement high-voltage battery. (Case No. XXX) I purchased this vehicle in September 2025 from Apple Sport Imports in [XXX] . The vehicle was sent immediately to Hyundai of Leander for an open repair and I never took full delivery. I was informed the replacement battery was initially allocated to a different dealership and a new order could not be placed until approximately January 2026. As of March 2026, Hyundai's own case manager confirmed in writing on March 30, 2026 only that they are working to determine the battery's arrival date with no confirmed completion date provided. Since November 2025, I have made 5 monthly payments of $513.92 totaling $2,569.60 on a vehicle I have never driven, with a sixth payment of $513.92 due in April 2026. I am also flagging a potential records discrepancy for NHTSA's awareness. When I checked my VIN on Hyundai's recall lookup website, Recall 272 — covering an ICCU software update, fuse replacement, and ICCU replacement on 2022-2024 MY IONIQ 5 vehicles — is listed as a Closed Campaign with a completion date of October 24, 2025. My vehicle was physically at Hyundai of Leander awaiting parts on that date and remains there today. I do not know whether this recall is related to the current open repair, but I am flagging the potential discrepancy for investigation. When I raised this with Hyundai of Leander's service department, I received no clear explanation. I am requesting that NHTSA investigate Hyundai Motor America's recall fulfillment practices and the accuracy of their recall completion records for this vehicle. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The Ioniq 5 has a known issue with a part called the ICCU. When the part fails, which it seems to inevitably do despite multiple recall repair visits and software upgrades, the car ceases to be driveable. In advance of this moment when your multi ton vehicle turns into a brick you get a short warning saying pull over, but that is not always possible. The car starts loudly beeping and reduces its max speed to 12 mph, which is not great on the freeway. The ICCU is a huge safety problem, a known issue that Hyundai is well aware of, and the part needs to be redesigned and the NTSB needs to force Hyundai to extend greater warranty protections for this event. This just happened to me, the dealership says they have 8 other ioniq 5's in with the same issue and I am number 9 on an ioniq 5 iccu loaner car waiting list while the part is back ordered for at least one month. My car stopped at a stop light and fully blocked an intersection when it bricked as I came off the freeway, was super scary to sort out in the middle of the road and I was very happy that my twin toddlers were not in the back seat, i was not so happy I had to pay to have the vehicle towed and arrange a comedicly complicated way to pickup my kids due to this known issue parts failure.

After pre warming the car in the garage, I left for work. Three minutes into the drive I heard a single popping sound from the passenger side rear of the car. I then received an error on the dash "Stop Vehicle and check power supply". I them drove 4 more miles to work with the hazards on. Two hours later I attempted to drive it to the dealer and it stopped .5 miles away. Hyundai had it towed the rest of the way.

This is an EV vehicle. This is a recurrent problem with the Ioniq 5 and is all over the internet. For me this is the 2nd electrical failure. The first time the accessory batter failed and the ICCU controller failed and had to be replaced. Now its at the shop for the 2nd time for the same failure. Not sure if its the ICCU again or not. In and of itself not a problem to send it off to fix, The major issue is how it fails. There is no warning, If you are on the highway going 70 mph it goes flat... no propulsion. This gives you no or little power to get to a secure spot. It then is only capable of about 20 mph. This is dangerous as hell. The first time it died completely and wouldn't move. For myself, i was lucky i was on a local road. I was driving. For my wife, who drives this car it would be harrowing. This is a recurring problem with this vehicle. A solution has not been found other than to swap parts. Hyundai need to be put on notice for a permanent fix.

While charging at a level 2 charger (6 kW) the car stop charging at 61% for no apparent reason. I was unable to restart charging. Within 2-3 minutes of starting the car and driving, received a warning to “check the vehicle electrical system” and then within another minute or two, another warning to “stop vehicle and check power supply.” I was traveling under 20 mph the entire time.