NHTSA owner reports · September 18, 2026 snapshot.
Fuel/propulsion System complaints
51 reportsClear category filterMileage unknown · Feb 12, 2026
Electrical SystemFuel/propulsion System
At approximately 10pm on Saturday night with temps in the single digits and a large snowstorm (that would cripple much of the US for several days) just about to hit, the 1.5 year old vehicle failed completely. Propulsion battery 81% charged, started normally, then gave "check electrical system" warning which upon search can be …
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At approximately 10pm on Saturday night with temps in the single digits and a large snowstorm (that would cripple much of the US for several days) just about to hit, the 1.5 year old vehicle failed completely. Propulsion battery 81% charged, started normally, then gave "check electrical system" warning which upon search can be due to a low 12v battery; call AAA and spouse (live 2hrs away). Began to drive towards a station two blocks away, thinking plugging in may help system warm and/or recharge 12v battery. Car goes into limp mode on road, then dies in four-lane road. Use portable battery jumper, draining it into the 12v battery and able to limp-mode out of traffic and into Walmart parking lot entrance where dies again. With bystander help, push the vehicle across parking lot to chargers; vehicle in total electrical failure w/random lights flashing (tail, dash, etc.) and no command-functions (couldn't shift into park, open charging port). Charged 12v battery from an ICE car 30 minutes w/restoration of command function, but nothing more than limp mode. AAA still hours ETA. Personally swap 12v battery purchased from Walmart w/restoration of power, but abnormal function (lane assist forcing wheel, menus malfunctioning) & warnings remaining. Drive vehicle to -thankfully- nearby dealership before another failure. Abandon vehicle & wait for pickup by spouse, drive last hour in a snowstorm. Very lucky I wasn't stranded on the highway, hit and killed in a snowstorm. Very lucky I wasn't hit and killed in the road where it died. Very lucky I called for help early, wasn't stranded more than 20 minutes in dangerous-cold, didn't wreck in snowstorm getting home. Very lucky the malfunctioning systems did not steer/force me into another vehicle or pedestrian, causing injury or death. Dealership confirmed (longstanding and very well-known) failure of ICCU module that Hyundai refuses to properly address. These are unsafe vehicles, hand-grenades on a timer.
NHTSA ODI #11717548
Mileage unknown · Feb 11, 2026
Electrical SystemExterior LightingFuel/propulsion System
As we drove toward the highway to begin our journey home in our 2024 RWD Ioniq 5 with our entire family and luggage in the vehicle, we received a "Check Electric Vehicle System" warning and immediately pulled over and called Hyundai Roadside Assistance. They initially were going to send someone to jump the car, assuming it was …
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As we drove toward the highway to begin our journey home in our 2024 RWD Ioniq 5 with our entire family and luggage in the vehicle, we received a "Check Electric Vehicle System" warning and immediately pulled over and called Hyundai Roadside Assistance. They initially were going to send someone to jump the car, assuming it was an ICE, but once we said it was an EV, they said they didn't have the equipment to jump an EV. We then spoke to Hyundai Customer Care, and we reported that we received the "Check Electric Vehicle System" warning. The HCC rep said that she did not see any issues with the vehicle on her end, so we would be OK to drive it. We specified that we had a 1.5 hour drive home and asked her explicitly if we would be OK to drive this length of time with this warning and make it home? She again said that we would be OK to drive it. After getting off the phone with her, we proceeded onto the highway and within about 2 minutes, received the "Stop Vehicle and Check Power Supply" warning and then, within a few seconds, began to lose power. This was extremely dangerous, as we were going down a hill on a highway frequented by semi trucks in the rain. Fortunately, we were still able to turn on the hazard lights and coast into a nearby hotel parking lot. As we were losing power, we were afraid we would not be able to get out of the car because all the doors were locked and the windows were up due to the rain, so we quickly unlocked two of the doors as soon as we pulled into the parking lot. One of us then had to stay with the car at all times because we couldn't lock or unlock the car. We eventually had the car towed to the Hyundai dealer closest to us who determined that the ICCU and fuse had failed and needed to be replaced, but they could only replace them with new parts of the same design that could potentially fail again; Hyundai does not yet have a fix for the ICCU failure.
NHTSA ODI #11717409
Mileage unknown · Feb 9, 2026
Electrical SystemFuel/propulsion SystemPower Train
Multiple 12v batteries, the battery management system, and ICCU have all failed on my Ioniq 5. During my 13-month lease, this vehicle has been inoperable for more than 30 cumulative days due to the same recurring defect. The vehicle was taken to an authorized Hyundai dealership multiple times, but the defect was repeatedly misdi…
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Multiple 12v batteries, the battery management system, and ICCU have all failed on my Ioniq 5. During my 13-month lease, this vehicle has been inoperable for more than 30 cumulative days due to the same recurring defect. The vehicle was taken to an authorized Hyundai dealership multiple times, but the defect was repeatedly misdiagnosed and not corrected, resulting in continued failures and extended loss of use. The defect causes sudden loss of power and complete vehicle shutdown, including the inability to restart the vehicle. If this occurs while driving, it creates a serious safety hazard by eliminating propulsion, power-assisted steering, and braking assistance. The vehicle may become disabled in traffic or at intersections, increasing the risk of a collision, injury, or stranding occupants in unsafe conditions.
NHTSA ODI #11716838
Mileage unknown · Jan 29, 2026
Electrical SystemFuel/propulsion SystemPower Train
Warning light came on stating that we needed to have the electrical system checked asap. Vehicle would not charge from Level 2 charger. It needed to be towed from our house to the dealer to get its ICCU replaced since there was a risk that it would no longer power vehicle on 4 mile drive to dealer for repair. Problem was fixed …
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Warning light came on stating that we needed to have the electrical system checked asap. Vehicle would not charge from Level 2 charger. It needed to be towed from our house to the dealer to get its ICCU replaced since there was a risk that it would no longer power vehicle on 4 mile drive to dealer for repair. Problem was fixed in one week by Roseville Hyundai by replacing the ICCU in the vehicle
NHTSA ODI #11714317
Mileage unknown · Jan 28, 2026
Electrical SystemFuel/propulsion SystemPower Train
12 volt battery drained in my driveway on 1/20. Vehicle was completely dead including door and hatch locks. Roadside assistance jumped the 12 volt battery. Vehicle message said, “Insufficient power. Check Electrical system”. Vehicle was towed to local Hyundai dealer, who diagnosed an ICCU failure. The dealer has four other…
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12 volt battery drained in my driveway on 1/20. Vehicle was completely dead including door and hatch locks. Roadside assistance jumped the 12 volt battery. Vehicle message said, “Insufficient power. Check Electrical system”. Vehicle was towed to local Hyundai dealer, who diagnosed an ICCU failure. The dealer has four other Ioniq 5s with the same problem. Replacement ICCU is on back order with no ETA for delivery. There were no warnings prior to the ICCU failure. If the vehicle were being driven when this failure occurred, the loss of power would have put all occupants at great risk.
NHTSA ODI #11714065
Mileage unknown · Jan 28, 2026
Electrical SystemEngineFuel/propulsion System
ICCU failed while driving. This resulted in the vehicle going into limp mode while driving, cause the speed to slow dramatically and rendering it unable to be driven. Luckily, this happened close to home and I was able to get a tow truck to bring it to the dealership. Otherwise I would have been stranded. This problem is know, a…
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ICCU failed while driving. This resulted in the vehicle going into limp mode while driving, cause the speed to slow dramatically and rendering it unable to be driven. Luckily, this happened close to home and I was able to get a tow truck to bring it to the dealership. Otherwise I would have been stranded. This problem is know, and was repair by Hyundai but there is no true fix as of yet, which continues to put drivers at risk. At the time of the failure the warning light "check vehicle electrical system" and "power limited" came on.
NHTSA ODI #11714015
Mileage unknown · Jan 28, 2026
Fuel/propulsion System
While driving car, got warning to “Check electric vehicle system” quickly followed by “Stop vehicle and check power supply”. Car went into “Power Limited” turtle mode and speed dropped down to 25mph without warning. Was able to limp the mile and a half home but glad I was not driving on the interstate at high speed at the time. …
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While driving car, got warning to “Check electric vehicle system” quickly followed by “Stop vehicle and check power supply”. Car went into “Power Limited” turtle mode and speed dropped down to 25mph without warning. Was able to limp the mile and a half home but glad I was not driving on the interstate at high speed at the time. Dealer confirms ICCU failed and needs replaced, part backordered and no ETA on when it will be back in stock.
NHTSA ODI #11713996
Mileage unknown · Jan 21, 2026
Electrical SystemFuel/propulsion SystemPower Train
The ICCU failed at 11,000 miles and 11 months into the lease. When the ICCU fails, the car becomes inoperable. This was a major safety hazard since it broke down on a major US highway and I was barely able to get off to the side of the road. This seems to be affecting a large number of Ioniq 5 and Ioniq 6 models.
NHTSA ODI #11712323
Mileage unknown · Jan 21, 2026
Electrical SystemFuel/propulsion System
We heard a pop noise and then received low 12 volt low battery warning. The Integrated Charging Control Unit (ICCU) might be the root cause of the Hyundai Ioniq 5 electric vehicle. Car went into slow turtle mode and we could barely move the car. we pulled over and found a safe spot to park car. we had car towed to Hyundai de…
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We heard a pop noise and then received low 12 volt low battery warning. The Integrated Charging Control Unit (ICCU) might be the root cause of the Hyundai Ioniq 5 electric vehicle. Car went into slow turtle mode and we could barely move the car. we pulled over and found a safe spot to park car. we had car towed to Hyundai dealership since car was not operational.
NHTSA ODI #11712305
Mileage unknown · Jan 18, 2026
Electrical SystemFuel/propulsion System
Component failure (ICCU module) lead to loss of power while driving. Vehicle required tow.
NHTSA ODI #11711750
Official recalls
3Jul 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.
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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