My 2022 Ioniq 5 had an ICCU failure on February 2025. On February 12, 2025 I was not able to charge the car. I took it to the dealer twice for an ICCU software update. The first software update was on October 15, 2024. The second software update was January 16 2025. The third time was on February 13, 2025 for an ICCU failure. The car is at the dealership and waiting for the part so it can be replaced. If you need to do an inspection the car is at the dealership. There was no warning, it just will not take a charge. I have been waiting for a little over a month for the part to arrive at the dealership for replacement. I've call the dealership multiple times inquiring about the new replacement. They have no idea when this part will become available. I'm frustrated because no one knows anything so my car sits on their lot waiting for a part that I feel they should have in stock. Hyundai has known about the ICCU failures since 2022. Why Hyundai dealerships do not have ICCU's readily available? Knowing very well about these recalls and failures.

- Tampa, FL, USA

I was driving home on a very cold morning and heard a "thunk" in the back right of my car. Almost immediately I got a warning that my cars electrical vehicle system needed attention. That quickly turned to a turtle telling me the issue with the electric vehicle system was limiting speed. Eventually my car stopped working. I had the 12v battery jumped and got it home. After charging the 12v battery for over a day and calling a local dealership, they determined it was most likely the ICCU. I drove my car around to the front of my house and immediately got the same warning. It was towed that same day. It has now been 2 weeks and the part is on back-order.

- St Paul, MN, USA

On [XXX] I was preparing to leave for work in the morning. I unplugged my Ioniq 5 from the home charger, entered the car, and started the vehicle. Immediately, the panel warning system stated -??Check Electrical System.-?? Because I am familiar with the warnings that have been displayed related to ICCU failure, I called the dealership to schedule a service appointment (set for February 18, the following Tuesday). I drove the car to work for a meeting, then restarted the vehicle following the meeting and the same message appeared on the screen. I then drove the vehicle directly to Werner Hyundai Service Department in Tallahassee, Florida and left it for diagnostics. On February 14, 2025, my service advisor called to advise that the ICCU and the VCMS had failed and required replacement. I was then advised that I would be placed on a waiting list for an ICCU part that was expected to be released nationwide on March 1, 2025. As of today-??s date, March 8th, I have not been made aware of an ICCU part availability (apparently the VCMS has arrived at the dealership and is being held pending the receipt of an ICCU) nor an anticipated repair of my vehicle, it remains at the dealership service department pending parts availability. My husband unplugged our home charger that uses a 220 volt plug and noted that the plug showed melting damage and that the plug and wall had black marks that suggest that the car caused a malfunction that resulted in a spark in our garage. Due to the location of the outlet, the spark did not cause a fire. Since that date, every time our HVAC system comes on at home, our lights flash, this did not happen prior to [XXX]. We are contacting an electrician to inspect the outlet and any affect the surge had on our home electrical panel. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- Tallahassee, FL, USA

Was pulling out of drive way. Loud pop heard in the car. Immediately car flashed warning telling me electrical system had an issue and I needed to pull over and have the car towed to a dealer for service. Was told the part was related to the iccu and would take a couple days to arrive. Part is now on back order. 3 weeks later I am still waiting with little to no update on timeline for repair.

- Fort Knox, KY, USA

ICCU failure preventing car from AC charging. In shop 25 days now but part not available and not given estimated repair time. Car was bought new and has 24,600 miles on it.

- Banning, CA, USA

ICCU failure. Vehicle abruptly reduced speed while on the road. Hyundai has inspected the vehicle and confirmed the failure. "Stop vehicle and check power supply" warning. "Check electric vehicle system" warning. "12v batter voltage low. Stop safely" warning. All first appeared within a few minutes of the vehicle losing power. Vehicle has been at dealership for repair/replacement of ICCU since February 7th.

- Charlotte, NC, USA

Even after getting all recalls done my IONIQ5 had an ICCU failure. I feel that latest update which was supposed to fix ICCU issue actually accentuated it. With number of complaints on this car for ICCU failure there should class action law suit on Hyundai

- Westford, MA, USA

On the morning of February 3rd, 2025, while driving, I heard a pop. A few seconds later, as I approached an intersection, a yellow warning appeared that instructed me to "Check the Electric Vehicle System". It minimized to a small caution light. I attempted to continue driving, pulling through the intersection; however, the vehicle had an abrupt loss of power; I was unable to proceed over 20-25 mph. In total no more than 2-3 mins passed from hearing the pop to loss of power. I pulled into a neighborhood, stopped the car, and consulted the owner's manual for direction on the warning light. While parked, and an estimated 8-10 minutes after hearing the first pop, I received a second warning, this time in red. It said "Turn power off immediately. Check power supply." I turned car off/contacted roadside, as advised in my manual, for a tow. After review at the dealership, I was originally told I needed a new 12V that it had died while I was driving. I authorized the replacement, though I also indicated to the service department that if that CAN happen, it really does not make sense AND there should be a different warning indicator for a failed 12v that could be replaced roadside versus instructing for a tow.However, after replacing my 12v the service advisor indicated that the car pulled codes and that the ICCU and its fuse seemed to have failed, which likely caused the damage to the 12v battery. After a few days of testing, my car was cleared for replacement of the failed ICCU by Hyundai's techline on February 10th. The dealer then provided a vehicle for my use while I await repairs. I was told a part could arrive the 18th or the 25th and the repair could take 3-4 days once the parts are received. It is still in shop with no updates. On 2/13/25 I filed a complaint to Hyundai; I have not received a response to date. All recalls for these issues had been performed on my vehicle in November 2024; we can no longer, in good conscience, use this vehicle. It is unsafe.

- Canton, GA, USA

My vehicle-??s ICCU failed resulting in my 12v battery suddenly, and without warning, fail. Leaving me stranded. This seems to be a widespread issue that isn-??t being addressed properly as following the manufacturer-??s list of recall updates never solved the issue up to my day of failure.

- Stratford, CT, USA

My car suffered a failure of the Integrated Charge Control Unit ("ICCU") which makes the car underivable. This is the third time that I have had an issue with the ICCU. The first two times, it failed to charge the 12V battery, leading to a loss of all 12V systems and being unable to drive the car. This third time, the car now refuses to charge on AC power. Hyundai has tried to "repair" this issue with software updates, but it doesn't fix it. Now I am waiting for a remanufactured ICCU to replace my broken one.

- Chicago, IL, USA

This is the second time I-??ve taken my Hyundai IONIQ 5 in to Hyundai as part of a recall -??fix-?? for ICCU Failure. Each time, the car has been operating fine, I take the car in for the -??fix-?? as it-??s required, and then shortly after the car breaks down while it-??s in motion / operating. I-??ve concluded these are not -??fixes-?? and I have no ability to trust the safety or reliability of the vehicle. 1) ICCU Failure 8 Days After Recall -??Fix-??. Same thing happened the previous year. Took the car in for the recall -??Fix-?? and shortly after the car dangerous broke down while driving. 2) Car became a brick. 3) Yes, Hyundai Service Center has confirmed ICCU fault. 4) Yes, see #3 5) Yes, minutes before the car became inoperable.

- Portland, OR, USA

Car will start but has no propulsion. Error says -??Check EV System-??

- Charlotte, NC, USA

1) This is the second occurrence of this issue within the past 12 months. While driving, my EV displayed various blinking lights and a -??Check EV Connection-?? message, followed by a -??12v Battery Critical-?? warning. The entire system began shutting down in the middle of the road. I managed to pull over before the car completely shut off. 2) This malfunction posed a significant safety risk to me and others. The rapid deceleration and uncertainty of an imminent shutdown almost caused an accident, either from other vehicles crashing into me or from my inability to stop in time, potentially hitting another car. I have faced this life-threatening situation twice within a year due to the same issue. 3) The problem was confirmed by my dealership less than a year ago, and my car is currently being towed back to the dealership for re-inspection of the same issue. 4) The vehicle and its components have not been inspected by the manufacturer, police, insurance representatives, or other parties for the current situation. However, the manufacturer issued a recall for this problem last year AFTER my initial report, incident, and repair. They claimed to have fixed the faulty issue or replaced the necessary parts, when my vehicle was repaired less than 12 months ago. Despite this, I am experiencing the same critical problem again. 5) During the incident, my entire panel started blinking with a -??Check EV Connection-?? message, followed by a red warning sign indicating a 12v Battery Critical Failure warning. The system then went black, and the panel continued to blink white and black consistently while parked. The car cannot be started or moved.

- Sicklerville, NJ, USA

Less than 48 hours after getting the latest Integrated Charging Control Unit (ICCU) recall performed (Hyundai Recall Number 272, NHTSA Recall Number 24V-868), the ICCU on my car failed. This resulted in the 12V battery no longer being charged by the EV's main battery, and the car entering "Limp-Home Mode", limiting the car's speed to 20mph. Error messages include "Check electric vehicle system" and "Stop vehicle and check power supply". These messages appeared when the ICCU failed, not before. ICCU failures are well known with this car, hence the recall. However, there is anecdotal evidence in the Ioniq 5 Facebook forums that indicate that the ICCU failure rate INCREASES on cars that have had the recall performed. Hyundai and the NHTSA need to examine the failure data to see if there is a cause-and-effect relationship between recall repair and increased failure rate, or if the failures observed by the community are just coincidental.

- Stowe, VT, USA

Turning into my driveway one evening, the car displayed the "Check Electric Vehicle System" alert on dash. The following morning while backing out of the driveway to wait for a tow, the alert changed to "Stop vehicle and check power supply". Got car towed to dealer, and after diagnosing, confirmed that ICCU failed. Car has been at the dealer for almost 2 weeks at this point, and the part is still back-ordered with no ETA, according to the service advisor I have been working with.

- Smyrna, GA, USA

I took my Hyundai in twice to a local dealership for the recall to be fixed. They failed both times to remedy the situation, and said they would handle it again at my next scheduled service appointment. A few weeks later my car suffered from the ICCU failure and I was stuck without a working vehicle. I had my car towed to the dealership 20 days ago but they have no ETA on the part needed to fix the recall.

- California, MD, USA

I had the most recent recall (code 702 I believe) done on January 13th. I believe the recall was an NHTSA required recall and after the software update that was part of the recall my car will no longer charge. It has been with the dealer since January 15th with no resolution in sight. The software update was I believe the 4th such update intended to prevent a part called an ICCU from failing. It took 4 business days but the dealer Hyundai of Roseville confirmed the ICCU needs to be replaced and they don-??t have an ETA on when the part will be shipped. Online I have seen reports of the same thing happening to others and the ICCU repair process taking 1-2 months.

- Sacramento, CA, USA

Electrical system failure. Available for inspection upon request. While driving, warning appeared on dashboard. Warning said, "Stop Vehicle and Check Power Supply" The safety of vehicle occupants and others on the road was put at risk. I lost control of the vehicle in the middle of traffic due to the loss of electrical power. The problem has been confirmed by San Leandro Hyundai as part of the Safety Recall for the Integrated Charging Control Unit, Recall number 272. NHTSA Recall number 24V-868. The recall repair was completed but the ICCU was not replaced and is still defective. A few minutes prior to the eletrical failure a warning message appeared on the dashboard. The warning message said, "Stop Vehicle and Check Power Supply". First appeared on Saturday January 11th at 4PM (PT).

- Oakland, CA, USA

On December 22, 2024, I went out at 8 AM to have breakfast with my dad. On the way back, I noticed my car starting to slow down, and the "turtle mode" activated. Normally, this mode only occurs when the battery level is under 1%, but my battery was at 75%. As I tried to park in a safe location, the car suddenly lost power and displayed a warning instructing me to stop due to an electrical problem and to contact service. I was able to safely stop at a small shopping center plaza and called Hyundai's towing service. When the towing company arrived, they found they couldn-??t turn the car on and had to use a wheel-lift tow method. Unfortunately, I had to wait nine hours for the car to be towed. The car was dropped off at the dealership on December 22, 2024, but it wasn-??t checked until December 31. By the end of the first week or early in the second week of January, I was informed that the replacement ICCU (Integrated Charging Control Unit) had arrived. However, due to the dealership's schedule, they said they wouldn-??t begin the installation until the following Tuesday, with hopes of completing the work by the end of that week. This incident was especially frustrating because I had already experienced an ICCU failure in January 2023, just nine months after purchasing the vehicle. At that time, no one could explain why the ICCU component had failed, and now I-??m facing the same issue again.

- Lansdale, PA, USA

The vehicle has no power whatsoever. Upon approaching the vehicle, it did not unlock. I used the physical key to open the drivers door. I then tried starting the vehicle only to have the gauge and center display flashing on and off with a red warning That the 12v was dead, to pull over and top immediately then the displays turned off. There are no lights or power to the vehicle no whatsoever. It cannot turn on any of the interior lights or even power door locks. This means only the front doors can be opened or locked and the vehicle will obviously not move. The 12v battery system has been a continuing issue with the vehicle. It has been repaired and the subject of several recalls during my short ownership and is still a problem. Due to a blizzard, I have been unable to have the vehicle taken to the dealership and have been without transportation for 3 days already with no clear resolution from Hyundai.

- Lawrence, KS, USA