The contact owns a 2022 Hyundai Ioniq 5. The contact stated while driving 45 MPH, the vehicle started to lose motive power, after which the message "Critical Battery Level - Stop Car" was displayed, prompting the contact to pull over to the shoulder of the roadway. The battery warning light was illuminated. The vehicle was towed to the dealer, who diagnosed a failure with the Integrated Charging Control Unit (ICCU) relay. The vehicle was not repaired due to the part being on backorder. The manufacturer was notified of the failure, a case was opened, and the contact was referred to the federal safety agency Hotline for assistance. The failure mileage was 59,000.
2022 Hyundai Ioniq 5 electrical complaints
Page 6 of 11: complaints 131 to 160 of 307, newest first, as owners wrote them.
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.
Less than 48 hours after getting the latest Integrated Charging Control Unit (ICCU) recall performed (Hyundai Recall Number 272, the federal safety agency 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 federal safety agency 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.
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.
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.
I had the most recent recall (code 702 I believe) done on January 13th. I believe the recall was an the federal safety agency 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.
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. the federal safety agency 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).
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.
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.
The ICCU on my Ioniq 5 failed without any warning from the car or mobile app. All recalls were performed on the vehicle prior to it failing. I was unable to charge the vehicle on level 1 or level 2 charging. The dealership replaced both the ICCU and fuse on the vehicle.
12 V battery died after being plugged in to charge overnight. The 12V battery was replaced in May 2024 due to a similar issue. It seems that the ICCU recalls and software updates have not been fixing the problem.
Unknowingly my cars ICCU failed. I went to charge my car on December 23. The EVSE then immediately tripped the breaker. The EVSE gave an error code of a stuck relay fault and made the EVSE unusable. This happened to 2 different Juicebox chargers and both are not permanently disabled and need to be replaced.
Open ICCU Fuse, car would not charge
Hyundai has absolutely dropped the ball on this Ioniq 5's ICCU and 12V battery issue. After numerous recalls to fix a hardware problem through a series of software fixes that don't work and refusal to give a loaner for loss of use, I would like to pursue a buyback option for this vehicle. On Tuesday, [XXX], I went to Napleton Valley Hyundai in Aurora, IL to complete RECALL CAMPAIGN #272 the federal safety agency RECALL # 24V868000. After the recall, my 12V battery went dead on Wednesday, [XXX] and had to be towed to dealership. Their only solution was yet another software update and then charge the 12V and said it was ready for pickup on Thursday, December 5. I told them then to also do a wheel alignment and they said during that process, the 12V battery went down again. They then charged it back up and gave it back to me and said it was good. I encouraged them to pursue a better solution but they had no interest. So, it was picked up on Friday, [XXX]. On Saturday [XXX], the 12V battery went dead again and will have to be towed back to the dealership. Over the phone, my service advisor said it would have to be charged and released. If this issue then happens again, then a replacement might be considered. Calls to Hyundai North America headquarters have not yielded any results and they claim they need 3 business days to assign my case while I have no working car. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Received an error message upon starting car that said "stop vehicle and check power supply". Had car towed to dealership.
Hyundai issued TSB 22-01-094H for my vehicle which is an update to the battery management system,, but after 4 attempts Hyundai dealerships have still not been able to complete the TSB. Hyundai corporate has also not helped after multiple cases. After many hours of research, I have determined that my vehicle's BMS software was updated to an intermittent version (version 700x) that does not support this TSB via automatic update, and the correct BMS Rom (version 540x) must be selected manually, which the dealerships are unwilling or unable to do.
Hyundai of Fort Myers Repair Order Number [XXXX] Team, I am reaching out to formally report a significant safety concern involving our Hyundai Ioniq 5, which recently experienced an Integrated Charging Control Unit (ICCU) failure. This malfunction occurred despite our vehicle receiving all relevant software and hardware updates that Hyundai implemented to address this known issue. This experience has caused our family considerable distress and has raised serious doubts about the reliability of this model, as well as the adequacy of Hyundai’s current safety measures to prevent ICCU failure. While my wife and young daughter were in the car, the ICCU failure occurred suddenly, producing a loud pop that alarmed us all, particularly my daughter who was seated in the rear. She has since expressed fear about riding in the Ioniq 5, making it clear that this issue has impacted her sense of security in the car. Despite the updates Hyundai has issued, the failure occurred without warning, putting us in a vulnerable situation and highlighting that the current remedies may be insufficient to prevent this risk. The gravity of this problem is amplified by my wife’s critical health needs. She is currently on the waiting list for a kidney transplant, and our family requires a dependable vehicle to ensure she can be transported quickly and safely to her medical appointments and, when the time comes, to the hospital for her transplant. We cannot rely on the Ioniq 5 for these crucial needs given our recent experience with this unexpected breakdown. I am requesting that the federal safety agency investigate this issue, as our experience suggests that Hyundai’s current measures to address ICCU failure may not adequately safeguard Ioniq 5 owners. A comprehensive review of this problem could be critical in ensuring the safety of other drivers and families who may be unknowingly exposed to the risk of sudden vehicle malfunctions. We hope that the federal safety agency will consider further action
Today when I was driving down a canyon going 40 mph, the car started coasting and the accelerator was unresponsive. I couldn't keep the car from decreasing speed and regen braking wasn't working either. I don't know whether it's related, but this happened within seconds of me turning off daylight savings time in the menu. I coasted to a safe place to pull over (the brakes worked fine), but I could not get the accelerator to work after switching from drive to park to drive again. After turning the car off and then back on, the accelerator again worked like normal. After continuing driving, I turned daylight savings time on and off a few times, but nothing adverse happened.
While we were driving the Ioniq recently when it suddenly lost all power. We had a very brief warning on the dash that it was losing its power; we barely had enough time to pull onto a side street. It lost power so quickly we couldn't position the car properly and it stayed in the middle of the side street until the tow truck came and jumped the 12 volt battery enough to get the car into gear so it could drive up the tow truck ramp. The scary part was that we were only a block away from turning onto busy Highway 522 when it died. Had the car died on the highway we could have been stranded in a very unsafe position. The dealer later diagnosed the problem as a failed ICCU and 12-volt battery and replaced both. We had to rent a car for 3 days.
Car on 2 separate occasions once parked the other while in motion discharged unexpectedly and would not start. I was later notified by a contracted service station that the 12V battery is discharging and needs to be replaced or serviced by dealer. These events only started happening after a recent recall update was done to the vehicle for battery management. Warning signs on the vehicle said 12v voltage low stop safely.
After all the recalls and TBS that Hyundai has performed on this car to prevent any ICCU failures I still had the failure after all the updates. Last week after AC charging to 80% (7.6kw) the car thru an error code to check EV when starting up. It was only yellow so I attempted to drive it. Within 1/4 block the error code was flashing red and a warning was given to pull over and stop. Since I was only a block away I made it back home. The car had to be towed to the local dealer. Upon inspection they retrieved error code P1A9096 that said the ICCU failed. The ICCU fuse was also blown (open). This did not cause a safety issue this time but if I would have been on the road who knows. Also the replacement ICCU appears to be the same part number as removed? I do not believe Hyundai fully understands the issue and software updates have only corrected or is masking some larger issue.
On Saturday, [XXX], at approximately [XXX], I drove my 2022 Hyundai Ioniq 5 north on [XXX] . The car was operating normally. I stopped at the red light at the corner of [XXX] and noticed a large red circle with a "Check electrical system" warning on the driver's display screen. When the traffic light turned green, I pressed the accelerator pedal, and the car did not move. I looked at the "Park, Neutral, Reverse, Drive" shifter. The "P" was lit up, indicating the car was in "Park." I attempted to switch to "Drive," and the status indicator remained in "P." I then pushed the "EV START STOP" switch to see if I could cycle the vehicle off and then back on to clear the problem. The switch had no effect. [XXX] is a busy four-lane, undivided street near the University of Colorado at Boulder campus. I selected the hazard flashers and called 911 to alert the Boulder Police Department that I was in a car that was immobilized in the middle of the right-hand northbound lane. Cars had to swerve to avoid me. The Police Department dispatched a vehicle that arrived 10 minutes later, pulled up behind me, and put its flashing lights on to alert traffic. While waiting for the tow truck, I received another alert on the driver's display that informed me that the 12-volt battery was nearly completely discharged, and I had 10 minutes of power left. The warning counted the remaining minutes to 0, and the displays shut down. From the first warning message to the shutdown, I could not turn the car system off or shift the car out of the park. The tow company had to put dollies under the rear wheels of the Ioniq 5 and lift the front end off the ground to tow the vehicle, as all four wheels were locked. The car was towed to Crossroads Hyundai in Loveland, Colorado. It had just been serviced to address all the recall issues, including the ICCU software update. The car has approximately 16,000 miles on it. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
A warning to check electrical system was displayed. The battery did not have sufficient charge to drive it to a dealer so I tried to charge and the car would not charge past 60%. I was able to drive the car to the dealer where they diagnosed a failed EV battery. Prior to the failure the car would use battery percentage much faster than it should have. For example, a fifteen mile drive would deplete the battery 25 miles. The dealer still has the car waiting to replace the battery.
The Integrated Charging Control Unit failed. My vehicle would not accept a level one or level two charge. You would have to remove the rear seats to inspect. No one’s safety was put at risk. The problem has been confirmed by a dealer. The vehicle has not been inspected by the manufacturer, police, insurance representatives or others. There were no warning lamps, messages or other symptoms of the problem prior to the failure. No warning lamps appeared at all.
What component or system failed or malfunctioned, and is it available for inspection upon request? The ICCU failed. The car won't charge on a level 1, 2, or 3 charger. The failure happened in the middle of a charging session. Since failing when trying to charge the car says "charging unsuccessful". The dealer has had the car for 28 days and won't tell me when it will be fixed. How was your safety or the safety of others put at risk? Yes. My family. Thankfully the failure happened in our garage. If it had of happened when we were away from home we would have been left stranded unable to charge. Also, if the ICCU fails while driving the car loses all power and comes to a stop. Has the problem been reproduced or confirmed by a dealer or independent service center? Yes. It has been at the dealer for 28 days Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? It has been inspected by the dealer Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? No, there were no warnings prior. All ICCU related recalls had been performed.
When charging the car on level 2 charger at 40 amps, the connector where the charger plugs in overheats. Based on updated software the car reacts by turning off the charging, but I am concerned it may not always do that and the connector would overheat and fail. Also the car is not fully charged as it should be. This occurs perhaps 1 out of 2 or 3 charging sessions. Hyundai is aware of this but has chosen not to address the issue beyond shutting off charging, which is not an acceptable response. The local dealer appears to be unaware of the problem. They indicated I would have to pay for them to inspect it and only be reimbursed if the issue is under warranty
This has happened twice so far. I was driving down the street on the main road and the check evs error came on with a yellow triangle â ï¸ light came on. Suddenly the car slowed down, it was hard to steer but I was able to get it to a neighborhood near the school before it shut down. It scare me to know what would have happened if that was on a freeway. Now, because of the fear I hardly drive the car. The last time this happened was yesterday.
When you place the car in park a recall was done so that the emergency parking brake automatically engages. Well between 30 seconds to a minute after the car is in park, the brake disengage. When you go to set it manually after it disengage, it will still disengage.
The contact owns a 2022 Hyundai Ionic 5. The contact stated that while driving at approximately 55 MPH, there was a loud popping sound coming from the rear of the vehicle, and the vehicle decelerated to 15 MPH before the vehicle stalled. During the failure, the 12-Volt battery not detected message was displayed. The vehicle was later towed to the local dealer; however, the cause of the failure was not yet determined. The manufacturer was not contacted. The failure mileage was 25,000.
In Apr 2024 we had an issue with charging the vehicle at level 1 and level 2 took to dealer and they replaced the ICCU unit. A week later the car was DOA no lights nothing so we had to jump start it. We Took to dealer they did an update , week later DOA again. Took to dealer and found out the MSU part needs to be replaced Back ordered for a month and still at dealer was given a loaner, sound familar cause its occuring over and over. Waiting on repair no ETA.
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