2024 Hyundai Ioniq 5

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.

The vehicle experiences catastrophic, recurring 12V auxiliary battery discharge and complete electrical system collapse due to a suspected repeating failure of the Integrated Charging Control Unit (ICCU). The vehicle was previously serviced for identical 12V power-loss failures and recall interventions in June 2025. Despite those prior repair attempts, the defect has recurred aggressively, resulting in four separate 12V battery collapse events in October 2026 (specifically on October 10, October 13, October 17, and a complete breakdown requiring a flatbed tow on October 19). This defect presents an extreme safety hazard: when the ICCU fails to step down high-voltage power to maintain the 12V system, the vehicle experiences sudden and unannounced loss of electrical power while parked or operating, risking a total loss of motive power, steering resistance, and exterior lighting in traffic. Diagnostic testing confirms internal 12V battery failure with normal resting parasitic draw, indicating the charging system root cause remains unaddressed despite prior manufacturer recall campaigns (such as Recall 272). The vehicle is currently at an authorized dealer awaiting diagnosis and repair.

NHTSA ID

11772397

Incident

Oct 19, 2026

"stop vehicle and check power supply" came in from nowhere, The vehicle was fully charged and there were no previous issues noted. The charge quickly dropped down to about 8% After that. I searched for the error message online and learned about a recall specific to this exact year, make and model. The recall was related to this exact issue. I towed it to a dealer at 7300 Broadway, Denver.

NHTSA ID

11772003

Incident

Oct 18, 2026

My partner drove it towards location about 1 mile away. Partner had driven it about 3 miles each way just a few hours earlier. Also drove it about 5 hours earlier in the morning, then I drove it about 10 miles. I charged it at home L2 (6.8kW) successfully hours before partner drove it and experienced the problem. Partner said it had low power after starting, then expected power. Drove about 1 mile then the Stop Safely and Check Power Supply displayed on the dash. Partner pulled over and parked the car and contacted me. I contacted Hyundai Roadside Assistance to have the car towed to the dealership. AAA towing service driver was able to start the car and drive it onto the flatbed. Drop off was around 8pm. Next morning, the dealer's service associate called me. They said the car was dead. I described the "Stop Safely and Check Power Supply" message on the dash. Service advisor tested and their scan determined the ICCU had failed P1A9096. On service invoice: FURTHER EXAMINATION FOUND THE INTEGRATED CHARGING CONTROL UNIT HAS AN INTERNAL FAILURE, Service Advisor said the ICCU was replaced with a newer (Jan 2026) version, confirmed “bad ICCU and fuse” and replaced both: ICCU assembly (36400-1XAA0-A) and Fuse-High Voltage (375F2-GI040). Service advisor completed the replacement on the same day they received it 9/30/26 and I was able to pickup that afternoon.

NHTSA ID

11769155

Incident

Sep 29, 2026

My wife experienced a sudden loss/reduction of power-steering assist while driving the Ioniq 5 on [XXX], accompanied by warning indicators with "Check Driver Attention Warning (DAW) system". Vehicle required towing. Fault subsequently disappeared and could not be reproduced at the Hyundai dealership service department at Alexander Hyundai in Oxnard, CA. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11768247

Incident

Sep 11, 2026

Vehicle stopped responding at freeway speeds. Pedals didn’t do anything. Slowly pulled over and off freeway powered off car and back on again. Was able to continue driving home. Almost got stuck in the middle of the freeway

NHTSA ID

11759757

Incident

Aug 25, 2026

Failure of the iccu. Needed complete replacement under warranty. Unable to charge via any AC charger. The iccu had already been repaired under an existing recall.

NHTSA ID

11758474

Incident

Jun 23, 2026

After car has been parked, when trying to start car , car turns on briefly saying 12 v battery low come to safe stop. Then car dies. Car isn’t in motion since it’s been parked. First time it happened I needed a tow truck and the tow truck needed to jump my battery. Since then battery keeps dying when trying to start this has happened every time I start the car since July 11 2026

NHTSA ID

11757939

Incident

Jul 11, 2026

Was driving to vegas, it was 103-107 degrees After fast DC charging drivetrain had issues that when pressing acceleration the car would have almost a loss in power that caused a stuttering movement. If forcefully driven, the error message drivetrain electrical system would pop up. Issue can be resolved but only after letting the car stay in park for 10-15 minutes after finished charging. Issue was repeatable but only if weather was hot enough. This shouldn't happen or at least warn the driver to not drive for a certain period instead of guessing the issue.

NHTSA ID

11756391

Incident

Aug 9, 2026

Some IONIQ 5 (NE EV) and IONIQ 6 (CE EV) vehicles may exhibit a vibration noise coming from the battery system assembly (BSA) lower cover. This may be caused by the lower cover becoming loose around the center mounting bolts. Follow the procedure in this bulletin to replace the mounting bolts and install cup washers with each bolt to hold the cover in place and resolve the noise on affected vehicles.

Some Hyundai vehicles may be equipped with a parking distance warning (PDW) sensor(s) that may trigger various DTCs and display warning messages on the instrument cluster, resulting in the PDW sensor(s) failing to detect nearby objects or triggering multiple false alarms. This condition may be a result of external damage to the PDW sensor membrane or sensor cover from rock chips or road debris, a collision, or previous vehicle repairs or modifications.

Certain 2022 – 2024 model year IONIQ 5, 2024 model year IONIQ 5 Robotaxi, and 2023 – 2025 model year IONIQ 6 vehicles may require a replacement of the Integrated Charging Control Unit (ICCU) and ICCU Fuse. At Hyundai, we are committed to providing vehicles of outstanding quality and value. In an effort to meet this commitment, the warranty coverage for the Integrated Charging Control Unit (ICCU) and ICCU Fuse Replacement has been extended to 15 years/ 180,000 miles from the date of original retail delivery or date of first use (whichever occurs first) and is valid for original and subsequent owners.

This bulletin provides information related to the navigation and head unit software changes introduced in the 2026 1st Navigation Map and Software Update. The changes may vary depending on vehicle type, model, and navigation system. Refer to the 2026 1st Navigation Map and Software Update Key Improvements and Additional Improvements tables in this TSB for a list of specific changes. The software can be downloaded via Navigation Updater (NAU) and updated by USB.

Hyundai is extending the warranty coverage for the Integrated Charging Control Unit (ICCU) and ICCU fuse to 15 years/180,000 miles from the date of original retail delivery or date of first use (whichever occurs first) and is valid for original and subsequent owners. Follow the flowchart in Technical Service Bulletin (TSB) 26-BE-010H to check for an active or stored occurrence of any Diagnostic Trouble Code (DTC) that requires replacement of the ICCU and replace the ICCU and ICCU fuse if necessary. Some vehicles may have an active DTC that requires ICCU replacement. Please note that any vehicles under 15 years/180,000 miles are covered by this TSB, even if vehicle is within High Voltage Warranty of 10 years/120,000 miles.

Hyundai is extending the warranty coverage for the Integrated Charging Control Unit (ICCU) and ICCU fuse to 15 years/180,000 miles from the date of original retail delivery or date of first use (whichever occurs first) and is valid for original and subsequent owners.