2022 HYUNDAI IONIQ 5 Complaints

ICCU and High Voltage Fuse blew suddenly and without warning on a 50 mph poorly lit road before sunrise. Vehicle immediately entered limp mode in traffic. Car could not make it safely back home before losing all power in the middle of the road (no warning was given that limp mode was about to fail it just stopped with all screens still on).The dead 12v battery (which the ICCU failed to recharge) made the car completely immobile once it turned off even for towing purposes. Put my safety as a driver and those on the road with me at risk with the vehicle drastically slowing down in the middle of travel with no way for others to pass me. Problem confirmed as the ICCU failure by dealer after finally restoring enough power to get the vehicle in neutral to be towed. The pending recall on this Vin is only pending because it is still sitting waiting for the replacement part a month later. no ETA on a resolution as Hyundai has stopped responding to requests for any information on timelines other than "eventually it will be replaced". All previous recalls for this problem were completed but were only software updates to "potential lower chances of occurrence". Issue is a very known Hardware issue and is very well documented online and local dealers are extremely familiar with it, but Hyundais solution is only to check if the part has already failed and a software update that does not fully prevent the failure in the future. Issue still occurred. no prior warning or behaviors were given

My car is an EV. I was charging the vehicle and it quit. I had just enough charge to limp to the dealership where it was diagnosed with ICCU failure. According to you records my car is not under a recall but the part failed. Glad I wasn't on the road. So my car has sat at the dealership since February 24th. Hyundai doesn't seem concerned about getting the parts to the dealership. This is why they can't give me an ETA: "Please note that part orders can take several days or even weeks to arrive depending on the availability and supply chain logistics, as outlined in Hyundai's policies." So they are still turning out Ioniqs but can't be bothered to make sure cars with an ICCU failure are safe and can drive. I can't sell my car and I am stuck. I also believe the 1% you say are effected by this problem is much higher.

My 2022 Ioniq 5 had an ICCU failure in March 2025. It has been with the dealership for 10 days. It does not charge on 220 v AC L2 charger. It does charge on public DC fast chargers but at approximately 120 KWH not 350 KWH. There are no error codes on the dash, however the ChargePoint charger trips with a GFCI fault. GFCI fault in a high voltage system could pose a serious safety issue. ChargePoint (the L2 charger manufacturer) support checked, and said they see a GFCI fault when my car is plugged in. To make sure it is not a charger error, I had another car, a Kia EV6 plugged in to the same ChargePoint charger, and it charged normally.

Instrument panel on car will not turn on when car is started. Thus, all advanced cruise control and safety systems do not function. Car has not been to the dealership for repair yet. There were no warnings or any other indication that there was an impending problem.

Plugged the car into an L2 AC charger like I have for nearly 2 years, the car tripped a breaker in my electrical panel and after restoring power to the charger, the car would no longer initiate a charge on L2 power. Confirmed this by attempting to charge at a public L2 charger, same result. Took the car to Hyundai and they confirmed the ICCU needs to be replaced and it's a wait of up to 8 weeks.

Vehicle Information: Year/Make/Model: 2022 Hyundai Ioniq 5 SE AWD VIN: [XXX] Mileage at issue onset: ~18,000–22,000 miles Purchase date: April 2022 Ownership type: Purchased new, paid in full Component Affected: Electrical System ? Integrated Charging Control Unit (ICCU) / Charging System Problem Description: I am reporting a persistent and unresolved charging system failure involving the ICCU (Integrated Charging Control Unit) in my 2022 Hyundai Ioniq 5. This defect has rendered the vehicle unreliable and currently inoperable, leaving me without safe transportation for myself and my infant child. Over the past year, I’ve brought the vehicle to the dealership more than 10 times, including 6 visits in just the last 3 months, due to charging issues that were supposed to be addressed via multiple recall campaigns (e.g., Campaigns 228, 997, 9A1, 9B5, 272, TCP). Despite these attempted software and firmware updates, the issue persists and culminated in a total failure to charge in March 2025. The dealership confirmed ICCU failure again, but advised that the part is on indefinite backorder, with no timeline for repair or safe operation. This defect is dangerous, particularly as it can result in loss of power and stranding, with potential risks to driver and passenger safety. Hyundai is aware of this widespread issue among Ioniq 5 owners but has not issued a permanent fix or offered viable alternatives to affected consumers. Hyundai denied my Lemon Law claim despite substantial repair documentation and admitted ICCU defects. I have filed with the BBB Auto Line and IL Attorney General. I’m now preparing for legal action. This is not just a consumer issue — it’s a national electric vehicle safety issue involving Hyundai’s inability to resolve a known, system-wide defect in a core safety component. Attachments: Available upon request: repair invoices, dealer assessments, Hyundai’s denial letter, lemon law filings. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Instrument cluster screen continuously resets itself while driving. Speedometer and safety warnings not available.

Turned on vehicle, immediately received "Check Electric Vehicle System" message. Drove ~1 mile back from coffee shop to work parking. Halfway to work parking, message updated to safely pull over and stop vehicle while at stoplight. Turned vehicle off during red light and turned vehicle back on during green light. "Check Electric Vehicle System" immediately displayed. Park at work parking. ~1 hour later, move car from work parking to guest parking to be towed to dealership, "Check Electric Vehicle System" still displayed. Dealership later confirms ICCU fault.

I am filing this complaint to report a serious safety defect involving my 2022 Hyundai Ioniq 5. The vehicle experienced a sudden failure of the Integrated Charging Control Unit (ICCU), which caused the car to completely shut down and lose power while in motion. My family member, who was driving at the time, stated that the car lost power and shut off without warning on the road, creating an extremely dangerous situation. Thankfully, they were able to pull over without incident, but this type of malfunction could easily result in a collision, injury, or worse. I later discovered that this issue is part of a widespread ICCU failure affecting Hyundai Ioniq 5 and other Hyundai/Kia EVs. My vehicle has been at the dealership for over a month, and Hyundai has informed me that the part required to repair the vehicle is backordered for 2–3 months, leaving me without my primary mode of transportation. This issue is not only a reliability concern but a serious safety hazard that warrants immediate investigation and intervention. A vehicle that completely loses power while driving is unacceptable, especially for a relatively new vehicle under warranty. I urge the NHTSA to investigate the ICCU failures in Hyundai Ioniq 5 vehicles and determine whether a broader mandatory recall is needed due to the loss of motive power and serious safety risk. Many owners are affected, and delays in repair parts are putting consumers in unsafe situations.

ICCU failed during driving causing car to come to a halt on a busy road quickly, thankfully enough time to drive to side of road. Car had been in dealer for ICCU software update/recall 2 weeks before hand. Whatever the current fix is for the ICCU is clearly incomplete, at the Seattle Hyundai dealership there are 6 cars all waiting 6+ weeks on replacement parts for this issue. This seems like a significantly bigger problem than Hyundai is admitting and they are not proactively addressing with urgency. Thankfully we were only on a busy arterial not on a highway.