NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
386 reportsMileage unknown · Jun 22, 2026
Electrical SystemFuel/propulsion System
1. What component failed, and is it available for inspection? The Integrated Charging Control Unit (ICCU) failed. The vehicle is currently at the dealer's service center, so the failed component is available for inspection upon request. 2. How was your safety or others' safety put at risk? After parking and re-entering the ve…
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1. What component failed, and is it available for inspection? The Integrated Charging Control Unit (ICCU) failed. The vehicle is currently at the dealer's service center, so the failed component is available for inspection upon request. 2. How was your safety or others' safety put at risk? After parking and re-entering the vehicle following a grocery stop, the vehicle displayed "Check Vehicle Electrical System" followed by "Check Vehicle Power Supply" warnings. This occurred without warning while the vehicle was in normal use, and the vehicle had to be towed since it was no longer driveable. The sudden, unannounced failure of the electrical/power system created a risk of being stranded in traffic or in an unsafe location had the failure occurred while driving rather than while parked. 3. Has the problem been reproduced or confirmed by a dealer or independent service center? Yes. The vehicle was towed to the dealer's service center, where the Hyundai-certified service technician confirmed the ICCU failed and informed us it needs replacement. 4. Has the vehicle been inspected by the manufacturer, police, insurance representatives, or others? The vehicle has been inspected by the dealer's Hyundai-certified service technician, who confirmed the ICCU failure. No additional inspection by Hyundai corporate, police, or insurance representatives has occurred at this time. 5. Were there any warning lamps, messages, or other symptoms prior to the failure, and when did they first appear? No warning lamps or messages appeared prior to the incident. The first symptoms were the "Check Vehicle Electrical System" and "Check Vehicle Power Supply" messages, which appeared suddenly upon re-entering the vehicle after a grocery stop, approximately one week after purchase (used) at roughly 8,000 miles.
NHTSA ODI #11745637
Mileage unknown · Jun 10, 2026
Electrical SystemFuel/propulsion SystemService BrakesCrashInjury
OnXXX, as we approached what I call the 6 o’clock position of a round-about in [XXX], we had braked almost to a full stop (0-5 mph) to wait on the car ahead of us to enter the round-about when we felt increasing movement. Despite braking, to wait on that car, our car with increasing speed started shoving that car into the circl…
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OnXXX, as we approached what I call the 6 o’clock position of a round-about in [XXX], we had braked almost to a full stop (0-5 mph) to wait on the car ahead of us to enter the round-about when we felt increasing movement. Despite braking, to wait on that car, our car with increasing speed started shoving that car into the circle. Fortunately, he was able to drive away from us, but that car had been damaged on the back and right side. With that obstacle out of the way, our car rapidly and exponentially increased speed - all while we were fully braking. Two witnesses said they saw our brake lights as we sped along. We hit the curb as we approached the 12 o’clock exit, and that turned us so that we crossed both lanes of the road and headed towards the far sidewalk and storefronts. When we hit that curb it pushed us diagonally to face the street again. Hard to estimate but we must have been doing 50 mph when we hit a very large brick planter and we finally were wedged to a stop when we slammed in between two vehicles parked parallel to the sidewalk. The motor ran for a few seconds after we stopped, and finally quit on its own. We KNOW the brake was applied the whole time; there were no visual or audible alarms from the car as we entered “UNINTENDED ACCELERATION”. Despite the incredibly strong impact (our car has been deemed totaled) the front air bags did not deploy. Only the driver’s side curtain deployed. The bumper of the parked transport van on our front left was damaged, and the small SUV on our front right was deemed totaled. No people were in those two parked cars; the first car was hit at the initial slower speed so those people were not injured. By some grace, no pedestrians were in our path or they would surely have been killed. The driver of our car (my husband) was miraculously not injured, but CT scans and x-rays showed I had several contusions and a fractured tibia that will require surgery due to brake, propulsion, no air bags. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION AC
NHTSA ODI #11743216
Mileage unknown · Jun 1, 2026
Unknown Or Other
All symptoms of a 2nd iccu failure. Pop noise heard. Warning lights came on 12v drained, vehicle towed to nearest dealer.
NHTSA ODI #11741290
Mileage unknown · May 22, 2026
Electrical SystemFuel/propulsion SystemPower Train
Car indicated 12v battery was critically low and that I should stop safely. I was just starting it in a parking lot. This is a classic ICCU failure and the car is up to date on all recall updates. The car requires manual key unlocking for outside access at this point, and the rear hatch is only unlockable using the manual re…
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Car indicated 12v battery was critically low and that I should stop safely. I was just starting it in a parking lot. This is a classic ICCU failure and the car is up to date on all recall updates. The car requires manual key unlocking for outside access at this point, and the rear hatch is only unlockable using the manual release mechanism which is recessed into the rear hatch and needs the key. The back two doors cannot be opened at all, from either direction and the handles don't work when the electrical system has failed and the child lock was engaged accidentally when it happened. This legitimately terrifies me for anyone traveling with back seat passengers who need quick exit. There isn't one.
NHTSA ODI #11739646
Mileage unknown · May 20, 2026
Electrical SystemFuel/propulsion System
The Integrated Charging Control Unit (ICCU) failed on my 2023 Hyundai Ioniq 5. The vehicle stopped charging prematurely overnight via AC Level 2 charging and then refused to charge again at all. The ICCU is responsible for maintaining the 12V battery by topping it up during normal operation. No warning or check engine light came…
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The Integrated Charging Control Unit (ICCU) failed on my 2023 Hyundai Ioniq 5. The vehicle stopped charging prematurely overnight via AC Level 2 charging and then refused to charge again at all. The ICCU is responsible for maintaining the 12V battery by topping it up during normal operation. No warning or check engine light came on, I was only made aware when I attempted L2 charging and the car would refuse to take the charge. I understand that with a failed ICCU, if I'm unaware of the failure (e.g., relies solely on DC fast charging which bypasses the ICCU), the 12V battery can deplete without warning while the vehicle is in motion, potentially causing sudden loss of vehicle systems including power steering, brakes, and other safety-critical electronics. The vehicle was parked at the time charging failure was discovered. No injuries occurred.
NHTSA ODI #11738922
Mileage unknown · May 17, 2026
Electrical SystemPower Train
The ICCU died a second time
NHTSA ODI #11738416
Mileage unknown · Apr 28, 2026
Electrical SystemPower Train
ICCU failed at 20,000 miles, 2 years after I first got the vehicle. Blue link showed the P1a9096 ICCU code failure. Car could not be driven for more than a few minutes then the message to stop safely came about and car would die. It took the dealer 2 months to replace the ICCU with the SAME defective part. It is only a matter of…
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ICCU failed at 20,000 miles, 2 years after I first got the vehicle. Blue link showed the P1a9096 ICCU code failure. Car could not be driven for more than a few minutes then the message to stop safely came about and car would die. It took the dealer 2 months to replace the ICCU with the SAME defective part. It is only a matter of time before it fails again.
NHTSA ODI #11734215
Mileage unknown · Apr 27, 2026
Electrical SystemEngineExterior Lighting
Iccu failure. Vehicle stops working completely
NHTSA ODI #11734182
Mileage unknown · Apr 27, 2026
Electrical SystemPower Train
My Hyundai IONIQ 5 has repeatedly lost 12V power and shut down. The vehicle had to be jumped by AAA multiple times. After being restarted, it died again, and after two days of use it was dead again. I am concerned this is related to the known ICCU / 12V battery charging issue affecting IONIQ 5 vehicles, which can cause loss of m…
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My Hyundai IONIQ 5 has repeatedly lost 12V power and shut down. The vehicle had to be jumped by AAA multiple times. After being restarted, it died again, and after two days of use it was dead again. I am concerned this is related to the known ICCU / 12V battery charging issue affecting IONIQ 5 vehicles, which can cause loss of motive power or make the vehicle undrivable. The vehicle is currently at Hyundai Southern States in Raleigh, NC for diagnosis and repair.
NHTSA ODI #11733953
Mileage unknown · Apr 24, 2026
Electrical SystemForward Collision Avoidance
See attached document for complaint.
NHTSA ODI #11733495
Official recalls
4Jul 2, 2026
Hyundai Motor America (Hyundai) is recalling certain 2023-2024 Ioniq 5 vehicles. The high voltage battery cells may contain misaligned electrodes, which can lead to a fire while parked or driving.
Consequence & remedy
Consequence: A fire increases the risk of injury.
Remedy: Owners are advised to park outside and away from structures and limit their charge to a maximum of 80% until the recall repair is complete. Dealers will replace the high voltage battery system assembly, free of charge. Owner notification letters are expected to be mailed August 31, 2026. Owners may contact Hyundai's customer service at 855-371-9460. Hyundai's number for this recall is 305. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov on July 3, 2026.
Nov 18, 2024
Hyundai Motor America (Hyundai) is recalling certain 2022-2024 IONIQ 5, 2023-2025 IONIQ 6, Genesis GV60, Genesis GV70 "Electrified," and Genesis G80 "Electrified" vehicles. The Integrated Charging Control Unit (ICCU) may become damaged and stop charging the 12-volt battery, which can result in a loss of drive power.
Consequence & remedy
Consequence: A loss of drive power increases the risk of a crash.
Remedy: Dealers will inspect and replace the ICCU and its fuse, as necessary. In addition, dealers will update the ICCU software. All repairs will be performed free of charge. Owner notification letters were mailed December 20, 2024. Owners may contact Hyundai customer service at 1-855-371-9460 or Genesis customer service at 1-844-340-9741. Hyundai's numbers for this recall are 272 (Hyundai) and 025G (Genesis). This recall expands and replaces previous recall number 24V-204. Vehicles previously repaired under recall 24V-204 will need to have the new remedy completed.
Additional source detail variants (2)
Electrical System:propulsion System:charging:module:software
Hyundai Motor America (Hyundai) is recalling certain 2022-2024 IONIQ 5, 2023-2025 IONIQ 6, Genesis GV60, Genesis GV70 "Electrified," and Genesis G80 "Electrified" vehicles. The Integrated Charging Control Unit (ICCU) may become damaged and stop charging the 12-volt battery, which can result in a loss of drive power.
Consequence: A loss of drive power increases the risk of a crash.
Remedy: Dealers will inspect and replace the ICCU and its fuse, as necessary. In addition, dealers will update the ICCU software. All repairs will be performed free of charge. Owner notification letters were mailed December 20, 2024. Owners may contact Hyundai customer service at 1-855-371-9460 or Genesis customer service at 1-844-340-9741. Hyundai's numbers for this recall are 272 (Hyundai) and 025G (Genesis). This recall expands and replaces previous recall number 24V-204. Vehicles previously repaired under recall 24V-204 will need to have the new remedy completed.
Electrical SYSTEM:12V/24V/48V Battery
Hyundai Motor America (Hyundai) is recalling certain 2022-2024 IONIQ 5, 2023-2025 IONIQ 6, Genesis GV60, Genesis GV70 "Electrified," and Genesis G80 "Electrified" vehicles. The Integrated Charging Control Unit (ICCU) may become damaged and stop charging the 12-volt battery, which can result in a loss of drive power.
Consequence: A loss of drive power increases the risk of a crash.
Remedy: Dealers will inspect and replace the ICCU and its fuse, as necessary. In addition, dealers will update the ICCU software. All repairs will be performed free of charge. Owner notification letters were mailed December 20, 2024. Owners may contact Hyundai customer service at 1-855-371-9460 or Genesis customer service at 1-844-340-9741. Hyundai's numbers for this recall are 272 (Hyundai) and 025G (Genesis). This recall expands and replaces previous recall number 24V-204. Vehicles previously repaired under recall 24V-204 will need to have the new remedy completed.
Mar 15, 2024
Hyundai Motor America (Hyundai) is recalling certain 2022-2024 IONIQ 5, 2023-2024 IONIQ 6, Genesis GV60, Genesis GV70 "Electrified," and Genesis G80 "Electrified" vehicles. The Integrated Charging Control Unit (ICCU) may become damaged and stop charging the 12-Volt battery, which can result in a loss of drive power.
Consequence & remedy
Consequence: A loss of drive power increases the risk of a crash.
Remedy: This recall is replaced by NHTSA recall number 24V-868. Vehicles already repaired under this recall will need to have the new remedy completed. Dealers will inspect and replace the ICCU and its fuse, as necessary. In addition, dealers will update the ICCU software. All repairs will be performed free of charge. Owner notification letters were mailed April 22, 2024. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 257/021G.
Additional source detail variants (2)
Electrical SYSTEM:12V/24V/48V Battery
Hyundai Motor America (Hyundai) is recalling certain 2022-2024 IONIQ 5, 2023-2024 IONIQ 6, Genesis GV60, Genesis GV70 "Electrified," and Genesis G80 "Electrified" vehicles. The Integrated Charging Control Unit (ICCU) may become damaged and stop charging the 12-Volt battery, which can result in a loss of drive power.
Consequence: A loss of drive power increases the risk of a crash.
Remedy: This recall is replaced by NHTSA recall number 24V-868. Vehicles already repaired under this recall will need to have the new remedy completed. Dealers will inspect and replace the ICCU and its fuse, as necessary. In addition, dealers will update the ICCU software. All repairs will be performed free of charge. Owner notification letters were mailed April 22, 2024. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 257/021G.
Electrical System:propulsion System:charging:module:software
Hyundai Motor America (Hyundai) is recalling certain 2022-2024 IONIQ 5, 2023-2024 IONIQ 6, Genesis GV60, Genesis GV70 "Electrified," and Genesis G80 "Electrified" vehicles. The Integrated Charging Control Unit (ICCU) may become damaged and stop charging the 12-Volt battery, which can result in a loss of drive power.
Consequence: A loss of drive power increases the risk of a crash.
Remedy: This recall is replaced by NHTSA recall number 24V-868. Vehicles already repaired under this recall will need to have the new remedy completed. Dealers will inspect and replace the ICCU and its fuse, as necessary. In addition, dealers will update the ICCU software. All repairs will be performed free of charge. Owner notification letters were mailed April 22, 2024. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 257/021G.
Feb 1, 2024
Hyundai Motor America (Hyundai) is recalling certain 2023 IONIQ 5, IONIQ 6, and Genesis GV60 vehicles. The rear inner driveshaft may have been improperly heat-treated, allowing it to break under load and resulting in a loss of drive power.
Consequence & remedy
Consequence: A loss of drive power increases the risk of a crash.
Remedy: Dealers will replace the rear inner driveshaft, free of charge. Owner notification letters were mailed March 29, 2024. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's numbers for this recall are 253(H), 017G(G).
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
1PE23011 · Loss Of Motive Power
Opened Jun 8, 2023 · Closed Apr 17, 2024
Status: closed (inferred from source dates) · Electrical SYSTEM:12V/24V/48V Battery; Electrical System:propulsion System:dc/dc Converter
On June 8, 2023, the Office of Defect Investigation (ODI) opened PE23011 to investigate allegations of loss of motor power on model year (MY) 2022 Hyundai Ioniq 5 vehicles. Some consumers reported loss of motor power immediately after a warning lamp illumination or reduction of motive power while the vehicle was in motion. This investigation found that the Integrated Charging Control Unit (ICCU) may be subject to various conditions such as overcurrent, overvoltage induced at the end of charging, and certain thermal loading during operation that can damage its internal components and open the ICCU fuse, resulting in an inability to charge the 12-volt battery. The vehicle could eventually lose all motive power, increasing the risk of a crash. In July 2023, Hyundai issued a service campaign to address certain MY 2022-2023 Ioniq 5 and MY 2023 Ioniq 6 vehicles that may have low 12V auxiliary battery charging occurrences due to an ICCU fault and may set the DTC P1A9096 “DC/DC Converter Input Voltage Sensor Fault”. On March 15, 2024, Hyundai filed Safety Recall 24V-204 for 98,878 MY 2022-2024 Hyundai Ioniq 5 vehicles and MY 2023-2024 Hyundai Ioniq 6, Genesis GV60, Genesis GV70 “Electrified” and Genesis G80 “Electrified” vehicles. The recall remedy provides an inspection, and if necessary, a replacement of the ICCU and the associated fuse. The ICCU software reduces the risk of overcurrent and implements voltage peak reduction at the end of EV battery charging. The recall also includes a software update that revises the electric water pump operational threshold to reduce thermal loading during charging and driving. In view of the recall action being taken by Hyundai, ODI is closing this Preliminary Evaluation. The agency reserves the right to take additional action if warranted by future circumstances. To review the reports cited in the Closing Resume ODI Report Identification Number document, go to NHTSA.gov.
Additional source detail variants (2)
Electrical SYSTEM:12V/24V/48V Battery
On June 8, 2023, the Office of Defect Investigation (ODI) opened PE23011 to investigate allegations of loss of motor power on model year (MY) 2022 Hyundai Ioniq 5 vehicles. Some consumers reported loss of motor power immediately after a warning lamp illumination or reduction of motive power while the vehicle was in motion. This investigation found that the Integrated Charging Control Unit (ICCU) may be subject to various conditions such as overcurrent, overvoltage induced at the end of charging, and certain thermal loading during operation that can damage its internal components and open the ICCU fuse, resulting in an inability to charge the 12-volt battery. The vehicle could eventually lose all motive power, increasing the risk of a crash. In July 2023, Hyundai issued a service campaign to address certain MY 2022-2023 Ioniq 5 and MY 2023 Ioniq 6 vehicles that may have low 12V auxiliary battery charging occurrences due to an ICCU fault and may set the DTC P1A9096 “DC/DC Converter Input Voltage Sensor Fault”. On March 15, 2024, Hyundai filed Safety Recall 24V-204 for 98,878 MY 2022-2024 Hyundai Ioniq 5 vehicles and MY 2023-2024 Hyundai Ioniq 6, Genesis GV60, Genesis GV70 “Electrified” and Genesis G80 “Electrified” vehicles. The recall remedy provides an inspection, and if necessary, a replacement of the ICCU and the associated fuse. The ICCU software reduces the risk of overcurrent and implements voltage peak reduction at the end of EV battery charging. The recall also includes a software update that revises the electric water pump operational threshold to reduce thermal loading during charging and driving. In view of the recall action being taken by Hyundai, ODI is closing this Preliminary Evaluation. The agency reserves the right to take additional action if warranted by future circumstances. To review the reports cited in the Closing Resume ODI Report Identification Number document, go to NHTSA.gov.
Electrical System:propulsion System:dc/dc Converter
On June 8, 2023, the Office of Defect Investigation (ODI) opened PE23011 to investigate allegations of loss of motor power on model year (MY) 2022 Hyundai Ioniq 5 vehicles. Some consumers reported loss of motor power immediately after a warning lamp illumination or reduction of motive power while the vehicle was in motion. This investigation found that the Integrated Charging Control Unit (ICCU) may be subject to various conditions such as overcurrent, overvoltage induced at the end of charging, and certain thermal loading during operation that can damage its internal components and open the ICCU fuse, resulting in an inability to charge the 12-volt battery. The vehicle could eventually lose all motive power, increasing the risk of a crash. In July 2023, Hyundai issued a service campaign to address certain MY 2022-2023 Ioniq 5 and MY 2023 Ioniq 6 vehicles that may have low 12V auxiliary battery charging occurrences due to an ICCU fault and may set the DTC P1A9096 “DC/DC Converter Input Voltage Sensor Fault”. On March 15, 2024, Hyundai filed Safety Recall 24V-204 for 98,878 MY 2022-2024 Hyundai Ioniq 5 vehicles and MY 2023-2024 Hyundai Ioniq 6, Genesis GV60, Genesis GV70 “Electrified” and Genesis G80 “Electrified” vehicles. The recall remedy provides an inspection, and if necessary, a replacement of the ICCU and the associated fuse. The ICCU software reduces the risk of overcurrent and implements voltage peak reduction at the end of EV battery charging. The recall also includes a software update that revises the electric water pump operational threshold to reduce thermal loading during charging and driving. In view of the recall action being taken by Hyundai, ODI is closing this Preliminary Evaluation. The agency reserves the right to take additional action if warranted by future circumstances. To review the reports cited in the Closing Resume ODI Report Identification Number document, go to NHTSA.gov.
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