2024 Hyundai Ioniq 5 Electrical Problems

Your car won't start and is completely unresponsive — the doors won't unlock and the charge port door is stuck closed. Even after manually unlocking the car, all electrical systems are dead inside. You had the ICCU (Integrated Charging Control Unit) replaced under warranty, but the same problem happened again just one week later. The fix will likely involve diagnosing and replacing the ICCU or related electrical components that control the car's power systems.

While reversing out of a parking spot, your car's ICCU (Integrated Charging Control Unit) and its fuse suddenly blew, causing a loud pop noise from the rear passenger side and a "check electric vehicle system" warning on your dashboard. Your car then shut down completely because the ICCU is responsible for charging the 12V battery that powers essential functions. Your service center confirmed the ICCU failure through diagnostic testing. The fix will likely involve replacing the ICCU unit and its fuse.

Your car's Integrated Charging Control Unit (ICCU) has failed twice, causing the vehicle to suddenly lose all power while driving. This is a known issue that Hyundai has not adequately addressed. The repair will likely involve replacing the ICCU module and checking related electrical connections.

Your Ioniq 5 suddenly lost all power while driving in the center lane at night, creating a traffic hazard. The dashboard warning showed "12V battery voltage low. Stop safely" — the same issue that was supposed to be fixed under a previous recall. Your vehicle has been at the dealership for repair for over a month. The fix will likely involve software updates to the Integrated Charging Control Unit (ICCU) and inspection or replacement of the 12V battery and related fuses.

While driving on the highway, your car suddenly slowed down and wouldn't go faster than 40 mph, and the dashboard showed a "Check Power Supply" warning. The vehicle eventually lost all power and had to be towed to the dealership. The dealer found that the Integrated Charging Control Unit (ICCU) likely failed, which is a known problem affecting multiple Ioniq 5 vehicles. Fixing this will require replacing the ICCU module, which controls power distribution to the vehicle's drivetrain.

Your car suddenly lost the ability to accelerate while driving, and a warning message told you to pull over and check the electrical system. The entire vehicle then shut down completely, creating a dangerous situation. This may have been caused by a failed Integrated Charging Control Unit (ICCU). The repair will likely involve diagnosing the electrical system and replacing the ICCU or related electrical control module.

Your car made a loud popping sound, then entered limp mode with electrical warnings appearing on the dashboard. After this, your vehicle lost the ability to charge. The integrated charge control unit (ICCU) appears to have failed and needs replacement.

While driving at 25 mph, you heard a loud pop from the rear of your car followed by a dashboard warning message telling you to stop and check the power supply. This sudden electrical failure left you stranded, and the dealer diagnosed it as an ICCU (Integrated Charge Control Unit) failure with no prior warning. The repair will likely involve replacing the ICCU module, which manages power distribution in your electric vehicle.

While driving in a parking lot, you heard a popping sound and your Ioniq 5 suddenly lurched and stopped with a "check electrical system" warning on the dashboard. When you tried to restart it at the dealer, the car lurched again and displayed a turtle icon warning followed by a "check 12V battery" message, after which the car wouldn't move. The issue appears to be related to the 12-volt electrical system or battery.

While driving, you heard a popping sound and lost the ability to drive at normal speeds. The repair shop diagnosed this as an ICCU (Integrated Charging Control Unit) failure. Replacing the ICCU module will be necessary to restore normal driving performance.

Your car's integrated charging control unit (ICCU) may fail while you're driving. This component manages your vehicle's charging system, so a failure could leave you without power or affect your car's ability to charge properly.

While driving, your car displayed an electrical system warning, slowed down, and then wouldn't accelerate beyond about 20 mph. The Integrated Charging Control Unit (ICCU), which manages the vehicle's charging and power systems, has stopped working properly and has been confirmed by the dealer as faulty. Fixing this will likely require the dealer to replace or reprogram the ICCU unit.

Your vehicle's ICCU (Integrated Charging Control Unit) has failed even though it was already repaired under a dealer recall. The same component failed again months after the previous repair, suggesting the fix may not have been permanent.

Your car's Integrated Charging Control Unit (ICCU) has failed, which controls the charging system for your electric vehicle. This means your car may not charge properly or at all when plugged in. You'll likely need to have the ICCU replaced by a technician.

Your car's ICCU (Integrated Charging Control Unit) failed, which caused your vehicle to go into a power-limited mode. When you started the car, you received a warning that power was limited, and after driving about a mile, you were instructed to pull over and have the car towed to the dealer. The dealer has confirmed this issue, though the failed component is not available for inspection.

There were no dash warnings. The car slowed to 20MPH and then stopped just as we were about to pull onto a busy freeway. The dash stayed on and then went blank while I waited for the tow truck to take it back to the dealer. The tow truck driver was unable to move the car without jumping the dead battery to get the car to pull up the tow truck ramp. We were told it was an ICCU failure. The car was in the Hyundai dealer for replacement of the ICCU unit for approximately 10 days.

On January 31st, 2026, not long after starting a journey in my car, I got a “check electrical systems” warning. I was close to home so was able to turn around and drive home. Just before pulling into the driveway, the warning changed to a “power limited” warning. On Monday Feb 2nd, I had the car towed to my local dealership, where it has been since. The dealer confirmed that it was an issue with the ICCU component which is on back order to this day.

Car suddenly out of the blue reported electrical system problem and battery problem. It also entered turtle mode where it would not go more than 10 MPH. If accelerating across an intersection this would have been extremely problematic if expecting to be able to travel faster than that. Towed to dealer that said it is a failed ICCU. This is a common failure mode and there needs to be a fix and safety recall for this.

Received “check electrical system” warning when turning on vehicle. Car towed to service department. Diagnostic said it was an ICCU failure with a back ordered part and no clear timeframe on when it would be in stock and fixed.

12v battery died at 13,484 miles

a warning "Stop immediately! Check Power Source" with loud beeping occurred and we were able to pull over and park safely. However, we were a 30 minute drive from home and in a downtown urban area. Took the next day off of work (essential healthcare worker at a hospital) to have car towed to dealership. ICCU failure. Told it could take months for replacement part to be shipped. Given a loaner car. Concerned that Hyundai does not have a real solution for this problem and that I cannot ever drive the car far from home again without risking the same thing happening again.

The ICCU and fuse failed, rendering the vehicle unusable and stranding my wife and child. The problem has been confirmed by the dealer. The component was inspected and confirmed to have failed. There were no warnings or indications of any kind prior to failure. My wife heard a pop from the back of the vehicle, then all sorts of warning lights lit up and the vehicle stopped.

ICCU failure

ICCU failure. Put vehicle in gear and heard a pop from the back. Dash said something about check vehicle soon. approximately 5 minutes later chimes went off and dash said another electrical warning that sounded more serious. Towed to dealership. Said ICCU was bad

The ICCU failed at approximately 14,000 miles. I was driving on a residential street and was able to park on the side of the road, so there was no danger, but the car became undriveable

I was driving on a residential street, traveling about 25 miles per hour. I heard a loud popping sound from the back of the car and within seconds I started to lose power. I pulled over to the side of the road and my car was dead. No electrical system, I couldn't even power the locks. I waited for several hours to have it towed to the dealer where it sat for 29 days waiting for the part. It's the ICCU that failed. Had I been going at highway speeds, I very likely could have been in a life threatening accident. This is unacceptable for a car.

On November 21, 2025, while driving at approximately 60 mph and with approximately 15,685 miles on the vehicle, my 2024 Hyundai Ioniq 5 suddenly experienced a loss of automated systems including adaptive cruise control, lane keeping assist, and forward sensors. The failure occurred without warning. The following day, the 12V battery was completely dead and the vehicle required a jump start to operate. The vehicle was diagnosed with a failed ICCU (Integrated Charging Control Unit). The ICCU was replaced by the dealership on January 6, 2026, under warranty. There were no crashes or injuries as a result of this incident. The sudden loss of driver assistance systems at highway speed poses a significant safety risk, as drivers may be relying on these features and have no warning before they cut out.

ICCU failure, which made the car stop dead in the road with no way to move it because the car shifts into Park when powered down (there is no way to shift into Neutral without power).

ICCU failed after 14k miles. Car suddenly went into "turtle" mode (displayed on dash), car could only go 10 mph and my wife had to pull the car off the street asap and was a very scary experience. Dealer has confirmed the ICCU failure and given me a loaner vehicle. No eta on when the part can be fixed, just that it's current status is back order.

Routine Friday morning and just finished charging my 2024 Hyundai Ioniq 5 at Walmart. As I started my vehicle to finish my commute to work, the dreaded "Check electric vehicle system" warning light came on along with a red battery icon. There were no warning signs or anything that could have foretold what would be happening. I pulled into an empty parking stall and called the Hyundai dealer for advice. I was told not to drive the vehicle and get it towed to the dealership. After being diagnosed, my car will need a new ICCU and ICCU fuse. The dealership gave me no ETA as it often takes weeks to months to receive the parts from Korea. I was told Fontana Hyundai had 9 other cars with the same ICCU issue in line before mine. I was so glad it occurred in a parking lot and not on the freeway since a malfunction with the ICCU will basically cause the car to loose total power and control. This is definitely a huge concern and safety issue.

ICCU failure. Occurred within the first few hundred feet after starting a drive.

Iccu failure in middle of busy interstate. Pop sound and then notice of electric system failure. Only made it 1.5 miles before vehicle fully died. Extreme safety concern. Couldn’t use any electrical systems on EV

ICCU failure. Dealer advises 2 month wait for replacement parts. No loaner car available. Vehicle has 15 K miles. This is a big problem with this vehicle.

My car gave me a "Check electrical vehicle system" message, which I have seen online may mean a problem with the ICCU. As the dealership is close - about five miles from my home, on residential roads - I decided to drive there. The car lost power very quickly and then died in the road shortly after leaving my driveway. Thankfully I wasn't on a busy street or an intersection and was able to safely get it to the side of the road, but if it had died while driving at a higher speed it would have been very dangerous.

Sudden ICCU failure in 2024 Ioniq 5 electric vehicle . A warning message to check electrical system appeared suddenly on driver dash screen. Tried to drive vehicle off street to a safe place to park. Vehicle shuttered and shook and would only move under 5mph on busy shopping & hospital area of 45 MPH road, placing me and my [XXX] child in danger of being hit by another fast moving car. Vehicle was towed to Bob King Hyundai in Winston Salem. They diagnosed the problem as a failed ICCU. Ongoing and long term problem with Hyundai. Service department has had my car for 11 days so far. They update me frequently. The part has been ordered but there is not ETA. Also, there is no guarantee that the new part will not fail as well. This puts my family at risk every time we drive the car, especially on busy roads and interstates. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The car displayed electrical system warning messages while driving, and it would no longer drive above about 25 mph. The issue was diagnosed as an ICCU failure by the dealership and has been awaiting a backordered ICCU for about 5 weeks.

Car died in neighborhood with electrical issue. Later reported to be an ICCU issue. At this point car has been at dealer service for over 29 days with no date on when it will be repaired.

ICCU failure

While pulling into traffic the car lost power and went into limp mode risking a collision. Car was immediately backed into driveway and completely died shortly after the initial power loss and had to be towed to dealer. Dealer diagnosed an ICCU failure. Warning lights activated at the moment the car lost power. Had this occurred on a highway or in heavier traffic the power loss and speed with which the car went from fully operational to dead could have had catastrophic consequences.

“Check EV System” error appeared in a red circle, with a red 12v battery icon. Then a turtle icon appeared and the car would not exceed about 30 mph. I was able to drive a mile and park in a lot. This happened after Level 2 charging to 100% and then driving one mile in 25° weather. The car was towed to the dealer.

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.

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.

The contact owns a 2024 Hyundai Ioniq 5. The contact stated that while driving approximately 60 MPH, the vehicle lost automotive power, with a burning odor entering the cabin of the vehicle. The message "Check Electric Vehicle System" was temporarily displayed on the digital display screen. The vehicle was towed to a local dealer and remained with the dealer. An appointment was scheduled to inspect the vehicle. The vehicle was not yet repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 17,000.

The vehicle began giving me electrical error warning messages at startup. I tried to drive it but further warning messages advised to stop driving. I ended up having Hyundai roadside assistance come and tow it to a dealer. The dealer reported the ICCU unit failed. The only remedy was replacing the whole unit which they could only get from Korea. It's been a month and there's still no ETA for the part.

My vehicle is 1 year old and has 7800 miles on it. I was driving on Friday evening (it was dark) and the vehicle acceleration was greatly reduced. I was about to get onto the highway but the warning light came on that said to have the electrical system checked. I pulled over and got a power limited warning and the vehicle would not drive after that and had to be towed. My toddler was in the car and if this had happened while we were on the highway in the dark I would have had trouble getting off the highway safely. The dealership inspected the car and said the Integrated Charging Control Unit (ICCU) had failed. They stated that there were 16 other cars were on the lot that had to be towed in with the same problem and that the part has been backordered since the beginning of January. I feel Hyundai is underreporting this issue and a recall investigation should be opened. There was no warning of this issue, I had been charging the vehicle and using it normally.

While driving 45mph car started flashing “electrical system failure pull over now” was able to pull over without accident but was terrifying and dangerous. We’d just had the ICCU recalled and replaced this summer. We had no issues before and bought the car Jan 31 2024.

On 1/8/26, while driving in morning rush hour traffic on a busy expressway, a loud bang was heard under the car and the car suddenly lost power/propulsion. A warning light for low power displayed on the dash at the same time. Fortunately, I was able to drift to the right shoulder as much of the traffic was exiting the expressway just behind me. Otherwise, this could have caused a collision. Since the car lost all power, I wasn’t even able to engage the hazards while awaiting assistance. Car was towed to dealer who confirmed an ICCU failure, which appears to be a well known issue with this vehicle. The fact that there was NO warning and the car’s sudden loss of power on a busy highway, AND I was never contacted by the dealer/manufacturer about any recall for this problem has me very concerned. I also understand this could happen again despite the repair (which took 4 weeks due to part on back order).

The ICCU on our 2024 IONIQ 5 (VIN: [XXX] ) failed on January 4, 2026, along with the 12‑volt battery. The vehicle had only 5,034 miles on it and was just 12 months and 14 days past our purchase date of December 21, 2024. At the time of the incident, the car was charged to 79% when it suddenly entered turtle mode. We were close enough to home to return safely, but the following day the vehicle had to be towed to the dealership. The dealer informed us that the car had completely lost power and that both the ICCU and the 12‑volt battery had failed. We have now been waiting five weeks without a replacement part. We have also learned that Hyundai has not yet implemented a design fix for the underlying cause of ICCU failures, despite widespread reports from owners. We consider this a significant safety concern. Had this failure occurred on a highway—especially in sub‑zero temperatures—it could have put us and other drivers at serious risk. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Initial alert “stop vehicle, and check power supply“. We were on I5 when limp mode triggered. This was dangerous as the speed of traffic was 75. Car was towed and dealer determined it was the ICCU. Car has been in the shop for almost 3 weeks. Still no estimate on the replacement part.

Electrical system failure. A electrical warning message appeared and the car immediately shutoff and slowed down. I was forced to stop on the side of the highway with limited shoulder. The car is currently at a hyundai service center and confirmed to be an ICCU issue. Even after adressing recalls, this issue persists.

ICCU failure (as determined by the dealership), car lost power rapidly while driving (there was a 'check electrical system' error on the dash) and I had to push the vehicle to clear it from the road (there was no shoulder where it failed).

Had ICCU replaced twice last year, then today my electrical system shut off and warning lights came on that I can’t go over 10mph then after that the car shut off completely.

Battery light came on and car stopped after about 1 miles in the middle of the road. ICCU failure was the cause as determined at the dealer.

The 12v battery system failed in November 2025. Battery was replaced by dealer. Then on February 2, 2026 the ICCU failed while driving. Complete and unsafe loss of power while driving.

ICCU Failure Car was in limp mode and unable to drive during -5 degree temperatures. ICCU Failure Confirmed by Hyundai dealership. Hasnt been inspected by others No prior warnings before the issue happened

ICCU needs to be replaced and is faulty.I had a warning on Friday and was able to jump my car, then a complete engine failure Sunday 2.1. The part is on back order, replacedment estimate not given (internet research says 1 week to 3 months) and I am in line for a loaner car even thought all parts are under warranty. The car is less than 2 years old and has less than 24k miles.

The ICCU failed as confirmed by local Hyundai dealership. That was on Jan 4. Car taken to dealership on Jan 5th 4 weeks later on Feb 1 still awaiting part (ICCU) which is on national back order as per the dealer and Hyundai customer support.

While the car was being driven, total failure. Towed to dealership. Diagnosed as ICCU failure.

The ICCU failed while I was merging onto the highway to take my 15 month old daughter to daycare. I received a warning message “Stop vehicle and check power supply” and the car entered “limp mode” slowing down considerably in the middle of traffic. A turtle icon also appeared on the screen to tell me the vehicle could only move slowly. I was able to pull off into a parking lot. The car battery died. It was 10 degrees F outside. Hyundai towed it to the dealer where they confirmed ICCU failure. The recall software update took place in December 2025. The dealer doesn’t expect to have ICCU replacement parts in stock for 1-2 months due to back order and 10 other ioniq5s are there waiting for the same fix. The vehicle is likely available for inspection by NHTSA if the dealer service center allows access.

Integrated Charging Control Unit (ICCU) failure at 16,000 miles in 2024 Hyundai Ioniq 5. Car was turned on and started to drive and sign said Power System Failure. Then it said Stop Vehicle Immediately. Car would not accelerate but I was close to home. I had it towed to Hyundai and they said it is an ICCU failure and they have no ETA when the part will come in.

I charged my car overnight and in the morning the ICCU failed, confirmed by Hyundai dealer. No prior warning.

The ICCU (integrated charging control unit) failed on Friday 1/23/26 as I was driving home. Two warnings came on, check electrical system and stop vehicle, car went into limp mode and was later towed to dealership where ICCU failure was diagnosed. Part is backordered, no ETA available for replacement. No loaner vehicles available.

I heard a popping sound from behind driver seat when I started the car. A few minutes later a dash warning showed up "stop vehicle and check battery state" followed by a complete loss of power on the road within 3 miles of reduced power driving (I was trying to find a safe spot to turn out of 6 lane road). Vehicle had to be towed to dealer who states the Integrated Charge Control Unit ICCU is not working and needs to be replaced. (i suspect the popping sound was related to that - ?blown fuse). The Part is on back order and has to be ordered from Korea and during the weeks long wait they do not have a loaner care to provide. This ICCU issue had a recall with software fix in 2025 which was performed on my vehicle. Why is Hyundai not fixing this problem for good. And why are they not providing me a loaner car?

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.

Jan 2, 2026. Vehicle made a popping sound and threw an error message. Took it to the dealer. Dealer diagnosed it with failed ICCU (integrated charge control unit?). Said that they had recently gotten 8 more failed units. Said that there are no more parts in stock in the US and Hyundai must manufacture and ship more. ETA is March but they are not sure. I do not believe Hyundai’s assertion that this only affect 2% of their EVs if they cannot keep parts in stock.

We purchased the car less than a year ago. It is still under warranty. The ICCU failed while we were driving on a city street. Several warnings lit up on the screen, telling us to immediately pull over for safety because of an electrical failure. We waited 30m for a tow truck in below freezing weather. It was towed to the Hyundai dealership, and several days later they inspected it and confirmed it was a failure of the ICCU (a known problem with this make and model). Replacement parts are on indefinite backorder - so we have no idea when the car will be repaired and returned to us.

On December 28, 2025, the vehicle displayed the dashboard warning "Check electric vehicle system." It was brought to the dealership and has been sitting there for 24 days so far due to a drained 12v battery and failed ICCU system. The dealers informs me that the ICCU is on a "national freeze, meaning that the part is on standby for further review by Hyundai engineers. The safety of everyone in the vehicle was at risk because the electrical system could have powered down in traffic without warning.

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.

Our 2024 Hyundai Ioniq 5 suddenly lost propulsion after briefly showing a warning that the 12V battery was malfunctioning. Fortunately, this happened close to our home on a road with little traffic. We could make it home at very slow speed (15mph) and the car completely shut off on our driveway and became unresponsive. The vehicle was towed to our Hyundai dealer by Hyundai roadside assistance service. The mechanic at the Hyundai dealer (Sport Durst Hyundai, Durham, NC) informed us that the Integrated Charging Control Unit (ICCU) had failed and did not charge the 12V battery. After researching I learned there had been a recall on the ICCU for model years 2021-24. However, when entering our car's VIN into the Hyundai recall site, and also in the NHTSA recall site, we found that our car was not included in the recall. Still, the ICCU failed. If we had driven on a freeway the sudden loss of propulsion could have caused a catastrophic collision. I also read that even after ICCU replacement due to recall, some replaced ICCUs failed again. I am very concerned about the safety of the car, even after repair. The mechanic advised us that it may take more than a week for the ICCU to arrive for replacement.

I was driving the car on the morning of January 1, 2026 and on its own with no warning it slowed down to 22 miles per hour on a street with 40 miles per hour. Cars angrily began speeding around me, and I could not make the car speed up beyond 22 miles per hour. I turned down another street and a message in the car said something to the effect of to check power source and pull over. I turned the car off and restarted but it the problem continued. I was able to make it home, and the car then went completely dead. I had it towed thereafter to the Hyundai dealer and they eventually told me the ICCU was broken and would need a new one (but they cannot say when even after weeks). I now see that many others have had this same problem for some time. I was not warned that this could happen (and would not have leased the car had I been told). It is dangerous to have the car throttle down especially to not be warned ahead, and I am glad I was not on a freeway and made it safely home. The dealer said this is happening to others, and that there are no replacement ICCUs in the United States. From the internet (I cannot verify) others said they waited months and got the same part which has failed for many, sometimes again after replacement. I only know what happened to my car and consider this dangerous.

ICCU unit died while driving. Very sudden - I got a message on dashboard to check the electrical system (and how am I supposed to do that on my own while driving?). Within a few minutes system tells me power was reduced (I had 85% charge), within a minute or so after that system starts telling me to pull over. Happened in town so I got to a paring lot and called service -- but the speed and cryptic nature kind of set me aback.

ICCU failed. Confirmed by dealer diagnostic.

I was driving and emergency lights went on declaring no more energy to the car despite being at 68% charge. I was able to pull the car off the road. A tow to the Hyundai dealership revealed it was an ICCU failure. I had done the ICCU recall. It was towed to the dealer on 12/21/2025 and the car was fixed on 1/12/2026 (they needed to wait for the new ICCU unit to arrive).

Component failure (ICCU module) lead to loss of power while driving. Vehicle required tow.

ICCU (Integrated Charging Control Unit) failure. The car had been working perfectly up until the failure and had about 70% charge on the main battery. As I started driving, I received a warning to check the electrical system but not really providing instructions on what to check. Car was not able to exceed 25 mph, then 15 mph and subsequently was completely dead after parking without ability to even lock doors. Car was towed to a Hyundai dealer, who confirmed that the problem was due to the ICCU unit breaking, which I am now waiting to have replaced since the part is on backorder. Due to ICCU failure, the power was coming from the 12V battery, which quickly drained. ICCU software patch had been applied previously under a recall, but the ICCU still failed. It does not seem that Hyundai has fixed the problem, and there are many other reports of this happening to other Hyundai/Kia owners with EVs using the E-GMP platform similar to the Ioniq 5. Even after getting ICCU replaced, some owners have reported the ICCU failing again. Please require Hyundai/Kia to fix this problem permanently as the situation could have been very unsafe for me had this happened on the freeway or some place I could not pull over.

Potential Failure of Integrated Safety Systems: On modern vehicles, the telematics/infotainment unit is often integrated with other vehicle systems. This failure raises concerns about the reliability of connected safety features, such as automatic crash notification through the Bluelink system, stolen vehicle tracking, and emergency service button functionality. I cannot verify if these critical safety systems are operational, which compromises my sense of security and the vehicle's intended safety package. Remote Start Failure as an Environmental Safety Issue: While remote start is a convenience feature, its failure in extreme weather conditions (extreme heat or cold) forces me to enter an unsafe vehicle environment. In cold climates, this means driving with frosted windows and a cold, stiff cabin, impairing visibility and driver reaction time. In hot climates, it can lead to dangerously high interior temperatures before driving. A feature sold with the vehicle to mitigate these risks is inoperative. Uncertainty and System Integrity: The root cause of this total system failure is unknown, as Hyundai Motors has provided no diagnosis. This uncertainty about the stability of a core electronic control unit is, in itself, a safety concern, as it may indicate broader electrical or software vulnerabilities that could affect other vehicle functions. I first reported this issue to Hyundai on October 29, 2025, ticket number [XXX]. Despite multiple inquiries, I have received no substantive update, no diagnosis, and no estimated timeline for repair. The manufacturer has effectively stated they do not know what is wrong with my vehicle or how to fix it. This is an unacceptable failure to uphold the vehicle's warranty and address what I believe to be a safety-related defect. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The integrated central control unit failed on my Hyundai Ioniq 5. A warning flashed on my dashboard stating that the car needed to be turned off immediately because of a power issue. I was in traffic on a very busy road and was trying to navigate to a safe place when my car stopped and turned off. After several attempts, I was able to start it enough to get off the street and to a safe place. I was fortunate that I was stopped in traffic or someone may have hit me. The tow truck driver said that he is towing at least one or two 2024 or 2025 Hyundai Ioniq 5 vehicles every day for this issue. The Hyundai service center said the ICCU failed and do not have an estimated date for replacing it because of the number of ICCU units that are failing is so high and they are backordered. I do not feel that this car is safe to drive. These cars should be recalled. If I had been driving on a freeway, I could have been hit and killed because I would not have had time to find a safe place to stop.

I am writing to formally document a serious and ongoing safety concern with my 2024 Hyundai Ioniq 5 SEL RWD Long Range Vehicle Information • Vehicle: 2024 Hyundai Ioniq 5 SEL RWD Long Range • VIN: [XXX] • Purchase Date: January 2024 • Purchase Price: $44,139.80 Summary of Events • May 2, 2024 – Recall performed: DTC CHK ICCU FUSE RPL24-01-0234 at Casa Hyundai Las Cruces • March–April 2025 – Repeated 12V battery failures. After two visits to Casa Hyundai Las Cruces, I was told an app on my phone (El Paso Electric charging discount app) was “checking in” too frequently. I deleted the app, and the issue temporarily subsided. • December 20, 2025 – Vehicle would not start after sitting for approximately one hour. Required a jump start from USAA. • December [XXX] – Vehicle would not start again; service appointment scheduled. • December [XXX] – Vehicle was jump-started and driven toward Findlay Hyundai St. George. While driving on the highway, the vehicle suddenly lost power. I was able to pull off the freeway, but this was an extremely frightening and dangerous situation. I was fortunate that my husband was following me. The vehicle had to be towed to the dealership. As of now, still waiting on parts (ICCU replacement) with no date given on backorder. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Almost immediately after shifting into reverse in my garage, I heard a loud pop come from the back seat. The car began to flash warnings on the dash about the electrical system, which turned to an emergency error after about a minute. I ended up having the car towed to the dealer, who confirmed the ICCU blew. I had not had the car on a charger in over 2 weeks and it is only charged on a level 1 charger in my garage. It has now been 2 weeks since the dealer received my car and are claiming that the part is still on back order.

My car (a 2024 Ioniq, which I bought new exactly a year ago, and which has less than 12,000 miles on it) lost power on a busy road. I ended up having to get it towed to the dealership as it was not drivable. It’s currently at the dealership with a blown ICCU, which I’m told needs to be replaced. Apparently this part is on back order due to high demand & I do not have access to my vehicle for at least 2 weeks. Upon doing research, it seems that this is an extremely common problem for the Hyundai Ioniq. NHTSA has the ICCU failure rate as 1% but per my dealership, in their experience, it is 6-7%, which is appallingly high. I am very surprised and disappointed to see that there has been no recall ordered for this part.

While driving on highway, there’s loud pop came from rear area and then the “check electrical vehicle system” warning light came on. The car wasn’t able in turtle mode.

Had car in for regular service. No problems reported by service department. Immediately after leaving the dealer, less than 1 mile away, a warning message came up on the screen that the car "may have experienced a charging/electrical event, and to contact my dealer immediately of service. Risk of system failure. I immediately returned to the dealer, and they did a quick diagnostic check, which revealed DTC code P0AA600. This is the second similar incident with this car. On 1/10/25 this car had recall campaign 272 performed, which was supposed to fix this problem. On 8/22/25 the car would not start and had to be towed to the dealer. They replaced the 12v battery and claimed the battery was defective.

all suddenly car started to show : Check electric vehicle system" And slow down to 25 miles and eventually 10 miles. Make it not drivable. Looks like ICCU issues

The ICCU on my car failed after hearing a loud pop (fuse blown) while driving on the freeway. This was an incredibly dangerous scenario in which I went from 70 mph to 25 mph, in an area with no shoulder. Hyundai is aware of the issues with the ICCU and I believe they should expand the recall to include EVERY Hyundai Ioniq 5 and 6. Interestingly, the technician at the dealership states in the summary of service that my car is subject to the recall due to the fault code (P1A9096). Why did I have to experience this failure to be subject to recall? My car should be subject to the recall/service based on VIN, but according to [XXX] it is not. Also at issue is the time it took to Hyundai's tech line to work with my dealership, and the time they are suggesting to provide replacement parts. My car was delivered via tow truck to the dealership at 11:16 AM on 12/11/2025 and I got the message regarding the diagnosis and solution to my car's issue on 12/19/2025 at 10:01 AM. It should not take 8 days to diagnose this issue, nor should it take 2 weeks for parts that are a known issue for Hyundai. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

On Monday Dec 15 I was on the Coranado bridge in San Diego heading on the island. A warning flashed about the electric system. Then, towards the end of the bridge, the car immediately slowed down suddenly and I could feel the regenerative breaking. I had to time or opportunity to get over. By the grace of God, traffic started to slow as we got near the end of the bridge and the car was able to go roughly 20 MPH on the side roads with my foot all the way down on the accelerator pedal. With my hazard lights on, I was able to drive closer to where I was meeting my wife and find a parking lot to turn into so a tow truck could get me. It was terrifying. I’m alive by some miracle and I’m very lucky I was meeting my family and they weren’t with me.

The contact owns a 2024 Hyundai Ioniq 5. The contact stated that the message "Check Electric Vehicle System" and DTC: P0C7300 - System Motor Control Problem Detected had been displayed intermittently on the instrument panel. The contact stated that the DTC notification was persistently displayed on the Hyundai Blue link Mobile App. The vehicle was taken to the dealer several times, but the contact was informed that the failure could not be duplicated because the messages and the DTC were no longer displayed. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure, and the contact was informed that she would receive a call back within 2-3 days. The failure mileage was approximately 3,000.

The ICCU failed while driving which left me with an undriveable vehicle on the side of the road. The vehicle was towed to the dealership and repaired; however, the part is the same and may fail again.

While driving, heard a pop sounds from back seats. Then a warning appears on front screen : Check Electric Vehicle system. The car lost all power and stopped beside the road. The car has only 14K kms on it.

ICCU failure

Hyundai is ignoring the fact that many Ioniq 5 have an ICCU defect that happens without warning and can leave you stranded with a bricked car that you can’t drive. They have a software recall for it that I had performed at the dealer. This did not solve the problem because it failed yesterday and I was stranded far from home. They continue to put this same part in the 2025 model. I have a 2024. Brand new cars are having the same problem which requires the whole unit to be replaced with the same unit that can go bad. I know people who it has happened to multiple times. They need to issue a recall that replaces the entire unit with a redesigned one. Not the same exact part. Everyone of these cars is a ticking time bomb that can leave a person stranded.

On [XXX] at [XXX] Pacific Time , I was entering my garage when my vehicle had a surge of acceleration and went through thee wall seperating the garage from the kitchen. There wasn't any emergency braking , even with myself applying the brake , my vehicle refused to stop. My vehicle was totaled by Progressive Insurance .I am now furnishing the Progressive claims name and adjuster"s phone number: Grace Villard 440-910-6852. North Las Vegas Police Dept Accident report #[XXX] It was the Progressive Insurance aduster ,vehicle inspector who called me and told me there was a safety issue with my vehicle and declared it a total loss. Whatever aid you can avail me to I'd appreciate.. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Last March 12 2025 I heard a pop coming out of a parking lot and warning message appeared. I was able to drive at decreased speed to the dealer. They diagnosed it to be an ICCU failure. It took 6 weeks to get it replaced.

The contact's daughter owns a 2024 Hyundai Ioniq 5. The contact stated that the vehicle had been delayed in starting on several occasions. Additionally, the contact stated that while the contact's daughter was driving at an undisclosed speed, the vehicle suddenly stalled. The contact stated that the failures had occurred intermittently. The vehicle was taken to the local dealer, where it was diagnosed that the battery had failed and needed to be replaced. The vehicle was not yet repaired. The manufacturer was notified of the failure. The failure mileage was unknown.

I am the owner of a 2024 Hyundai Ioniq 5 with Vehicle Identification Number [XXX] I purchased/leased this vehicle on [XXX] from Stockton Hyundai. Over the last couple of months my vehicle has experienced an ongoing charging defect: it only charges on Level 1 but fails to charge properly using Level 2 or DC fast chargers, which significantly impairs its use, value, and convenience — a key feature advertised for this vehicle. The issue has not been confirmed by the dealer as they have not been able to figure out why it’s happening and the vehicle has not been inspected by anyone else I also feel like it’s a safety risk because I’m at risk of being stranded. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The car was down to 16% charge on the battery so I put it on the 220 v charger at my house. The next day I went to leave and removed the charger from the car and started it. I heard a pop and thought the garbage truck doing weekly pickup had run over something but now I think it was a noise from the failed component. Got in the car and started it and saw a yellow circle with the words “check electrical system”; I had seen this error message once before following a software update to the ICCU back in September 2024 [turned the car off and back on and the error went away] so I did the same thing again but the error didn’t go away instead the circle warning on the screen went to a red circle and read “stop the car and check the electrical system”. Went inside the house and called the closest Hyundai dealership [in Longmont since the one in Boulder closed with no warning] and after some back and forth they told me to have the car towed in since the 12 v battery charging system wasn’t working and it controls many things like power steering and regeneration braking and can cause a loss of power making the car undriveable and unsafe. Towed the car in and got a diagnosis of a failed ICCU module. The part is on order and I have no idea when it might actually come in and get installed. Hyundai is aware of problems with the ICCU and 12 v charging system and has issued several software recalls; this ICCU problem is all over the Hyundai Ioniq 5 forums and is a widespread issue with the Ioniq 5. I’m lucky this failure occurred at my home versus when I was driving or many miles away or at night cuz I would have been stranded.

On 4/7/2025 the vehicle came to a dead stop while driving about 45 mph on a highway entrance. I was able to get the car to the edge of the highway but it was completely inoperable. It required towing to the nearest dealer. After a day diagnosis it was determined that the ICCU and 12 volt battery had failed. I was stranded on the edge of the highway while waiting for a tow. The problem was confirmed by the dealer, replacement parts were ordered and the repair completed seven weeks later. A warning message appeared so briefly that I could not read it before the car failed completely.

I have a lease on a 2024 Hyundai Icoprniq 5. There is a recall due to ICCU issues. We had this car in service but it did not fix the issue. The car is now sitting dead in my driveway and will not move. Hyundai is refusing to do anything to fix the problem.

The car made a loud popping noise and immediately started displaying electrical system fault errors. The car propulsion stopped within 15 seconds and was not able to be moved after. I was on the freeway and just barely made it over to the side. Car was not able to be towed by a regular tow truck because the electrical system was gone and the car was not able to be shifted into neutral. Jump starting the battery did nothing. Car was sent to the dealer who confirmed that the car sustained an ICCU failure which controls the entire battery electric system. The ICCU had to be replaced. There is already a mandatory recall on the vehicle regarding the ICCU. The recall was to check the status and confirm that the ICCU was working properly and in good condition. I had this recall done BEFORE the ICCU failed, so even though the recall check was performed, the ICCU still failed and put me in a very dangerous situation. The car is 6 months old and has 6200 miles on the odometer.

I was driving on a highway during traffic on June 17 2025 and my ioniq 5 car started to make weird sound. Then after a minute, it abruptly started to push back and forth and the noise became stronger. A couple of minutes later, the "Check electrical vehicle system" sign was displayed on the screen. I pulled over due to the scare and turned off the car. A minute later, turned ON the car and drove. Same exact thing happened a day before too. This has not happened before since I got the car in Dec 2024. Car's battery was at 82%.

Got a “check electrical system” alert and then a “stop vehicle and check power supply” and “12V battery voltage low. Stop safely” before my car completely turned off. This started on May 30 and June 2nd 2025. Car was towed to the dealer and pending diagnostics.

Vehicle lost power on a two lane highway with a 55mph speed limit, which increased the risk of an accident. Warning lights appeared after the failure occurred; essentially giving the driver little to no warning. The vehicle kept slowing down to 30-25 mph, but fortunately close enough to home and was able to slowly roll into the garage. The vehicle was towed to the dealership and will take 2 months for the ICCU and ICCU fuse to be replaced due to backordered parts. This occurred after an ICCU update was done in 12/24.

On Monday May 12, 2025, while driving my Ioniq5 (2024) several warnings appeared concerning the EV electrical system. One warning dealt with 12 volt battery issue and other warning alerted the entire vehicle's electrical system was failing with instruction to stop driving vehicle immediately. I was out of town and my car was towed to local hyundai dealership. The problem appears to be a faulty ICCU component and parts have been ordered. Having my brand new EV turn off in traffic is scary and this experience has been frustrating and nerve wrecking. Knowing Hyundai was aware of this problem makes it even worse.

The Integrated Charging Control Unit failed while driving. The car went into limp mode and would not drive over 25 mph. The dealership confirmed the issue and the parts are on backorder for an undetermined amount of time.

Battery Drained

-The Integrated Charging Control Unit (ICCU) component failed. The vehicle experienced multiple electrical system warnings before losing functionality. The component should be available for inspection upon request. -The vehicle lost power while I was driving. The "Stop Vehicle" alert appeared, requiring me to immediately find a safe location. Had this happened in high-speed traffic or an unsafe environment, it could have led to an accident or left me stranded in a hazardous situation. -the problem has been confirmed by a dealer. The vehicle has been inspected by the dealership following the issue, but it has not been examined by other entities such as police or insurance representatives. -Yes, the “Check Electrical System” warning appeared twice briefly before disappearing weeks/months prior. However, no immediate issues followed those warnings at the time. The day of the failure, the "Check Electrical System" alert appeared again, followed by a "Stop Vehicle" warning a minute later. After pulling over safely, a "12V Battery Depletion" alarm also appeared.

Have gotten all recalls fixed associated with the ICCU; car has less than 15000 miles on it and suddenly lost power, “check electrical system” and “power limited” lights flashing. We had no warning prior, and had just arrived back 2 days before from a long road trip. While I’m glad it happened while close to home, we still had to have our vehicle towed to the dealership and it took 3 business days to diagnose the issue (ICCU failure). We were put at risk due to the sudden change of status and inability to access the contents of our car after the power died (including my toddlers car seat).

Car just died in the middle of a 3 lanes highway. It was the ICCU issue, barely any warning to stop and then when it died, no light, 4 way flasher or anything to communicate to other drivers about our disabled vehicle. It was 3:30 am in the morning, had to call Colorado Highway Patrol to come and help out while we waited for the tow truck. We found reports of the fail ICCU, this is something that can put any family in a very unsafe situation.

ICCU failed while driving. Causing the car to dangerously decelerate with little to no warning. The car then bricked itself on the side of the road. Diagnoses is a failed ICCU. This failure was insanely dangerous as the car lost all power and would not accelerate.

The contact owns a 2024 Hyundai Ioniq 5. The contact stated that while his wife was driving approximately 30 MPH, the vehicle started losing motive power. The contact’s wife depressed the accelerator pedal; however, the vehicle shifted to first or second gear and failed to accelerate above 20 MPH. The contact stated there were no warnings illuminated. The contact stated that his wife pulled into a parking lot and the vehicle lost electrical power and was unable to be restarted. The contact had the vehicle towed to a dealer. The dealer diagnosed the vehicle and informed the contact that the vehicle had had a failure of a part that was on a national back order. The vehicle was not repaired. The manufacturer was informed of the failure. The failure mileage was approximately 11,000.

On March 22, 2025, our 2022 Hyundai Ioniq 5 suffered a sudden, complete loss of power while driving at night, after receiving Hyundai’s recall service in January. While driving on city roads, the car displayed “Check Battery” errors despite the main EV battery showing ~75% charge. After stopping, we had AAA install a new 12V battery, which did not resolve the issue. Minutes later, while crossing a Y-shaped highway interchange, the car lost the ability to accelerate, leaving us stranded in a dangerous area. Hyundai Roadside Assistance gave an 89-minute ETA and failed to dispatch a tow capable of transporting our family of three. We were forced to call our insurance to tow the vehicle to safety. The car is now inoperable at a dealership. Hyundai has not followed up. This is a major safety concern — involving either the 12V system or software post-recall — and could impact other vehicles. Photos, screenshots, and documentation are available.

Car had a warning Check Electrical System and the 12volt drained. ICCU Failed car undrivable.

ICCU failure

The contact owns a 2024 Hyundai Ioniq 5. The contact received notification of NHTSA Campaign Number: 24V868000 (ELECTRICAL SYSTEM); however, the part to do the recall repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.

12V battery dead. It is only 5 months and the start battery is dead. I needed jump start and the problem reoccurring. I hear this is a common problem for all HI 5 models. So why it is not part of recall? Dealership is asking money for replacement. Repeated reoccurring dead battery issue.

Hyundai has installed faulty 12v batteries in the Ioniq 5 series cars. The OEM battery fails, resulting in an emergency stop or failure to start. Hyundai refuses to acknowledge the faulty batteries, yet the resolution found by numerous consumes to resolve the issue has been to purchase and install the correct 12v battery. Despite going to the dealership to seek a remedy, they refused to replace the faulty battery. They asked for the dead car to be towed into them, but Hyundai roadside assistance is unable to have towed a dead EV. 5 times the car died in the first 6 months of ownership. Hundreds if not thousands of US owners online have reported the faulty 12v issue to Hyundai, received no working repairs, and ultimately replaced their batteries at their cost.

Received orange warning “Power limited”. A minute or so later received RED warning “Stop vehicle and check power supply”. Less than a minute later the car stopped and turned off completely, even the HAZARD lights would not flash. Tow truck was unable to tow because the car could not be taken out of park, wheels locked. Also, as soon as the warnings started the power steering failed and the car was very difficult to maneuver. The combination of difficult maneuvering followed by unable to move could be VERY dangerous in the wrong situation.

Went to charge at AC charger and found that it would not charge. Tried another charger and same thing occurred. Car would say 0.3kW and than stop charging. Dealer said ICCU issue.

I received this car new on 9/2/2024. I was driving at the freeway speed of traffic on 9/5/2024 when there was a sudden alarm and warning lights flashing on the dashboard with a message that said “Stop vehicle and check brake system.” At this same time, the brakes stopped functioning normally, and I had to use extreme pressure with my foot pressing down on the brake pedal all the way to the floor to have the car slow down even marginally. All of this happened with traffic in front, behind, and on both sides of me going 65 mph! I was very luckily able to maneuver to the right lane and slowly decrease speed without getting rear-ended and without slamming into a car in front of me while going at high speed unable to stop. While waiting for a tow, I left the car on, as I slowly edged forward to a safer stopping location. The flashing red ring around the message to “stop vehicle and check brake system” remained, and then just after moving forward, another message with an amber circle around it said “Check ABS system.” This latter message stayed on for only a short time, then was replaced by the initial message. I had the car towed to the dealership, and their assessment was that there was a failure of the IEP module that communicates between aspects of the braking system. The final service report is attached, confirming the need for replacement of the IEP assembly. I was very lucky to come away from this event with nothing more than a very frightening experience. I hope that this report will initiate a recall to prevent a similar situation happening to someone else, and hopefully avoid tragedy involving serious injury or death.

I was driving on the highway and a message appeared that said “check electrical system”. The power in the car then completely bottomed out and I could not go above 25 mph.

I am writing to report serious issues with my 2024 Hyundai Ioniq 5 SEL, purchased on May 24, 2024, with approximately 3,000 miles driven. These problems have raised significant concerns about the vehicle's reliability and safety. The first incident occurred on July 22, 2024. I attempted to start the car in my driveway, and while the engine turned on, the vehicle suddenly lost power, and all electrical components became non-functional. There were no error messages, and the display showed all systems as normal. It seemed to function normally after turning the vehicle off and on again, but this unexpected power loss was alarming. The problems continued today, August 3, 2024. At around 8 AM, when I tried to start the car again, the system flickered twice and then shut off entirely. I contacted roadside assistance, and the car required a battery charge for about six hours before it could start again. This evening, while driving at approximately 15 miles per hour in my subdivision, the vehicle suddenly lost power after only a few minutes. This abrupt power loss posed a significant safety risk, and I was fortunate to avoid an accident. I contacted the dealer who sold me the vehicle, but they informed me that they could do nothing remotely and advised me to have the car towed to their location. It is extremely concerning and frustrating to encounter such severe issues with a new vehicle. Given the repeated and unpredictable nature of these problems, I urge Hyundai to take immediate action to investigate and resolve these issues. I am also concerned that other owners may be experiencing similar problems, indicating a potential widespread issue with this model. I am seeking urgent assistance to address these issues and ensure the safety and reliability of my vehicle. Thank you for your prompt attention to this matter.

Backing vehicle out of driveway and went to engage brakes and they did not engage. began rolling backwards down street with steep grade. Kept stepping on brakes with no response. Had to turn into a parked vehicle to keep from rolling down steep grade and potentially off a substantial cliff. Happened today and dealership said that it may be because the "battery for the brake" had not received a charge from the main battery. Very dangerous and never disclosed. If I had not taken evasive action I could have easily been killed. Car is being dropped off at collision center today but is available for inspection. There were no warnings or other symptoms.

The car lost propulsion and displayed Check Vehicle Electric System. Now the it’s sitting at the dealership for over 30 days waiting for parts.

Auto lost all power. No instruments visible. Propulsion system would not charge. Thankfully vehicle at a stop when occurred. Unable to drive. Car as dead as a home in a power outage. Everything dark. Nothing electrical worked. Had to use emergency manual key to enter vehicle. Tow truck driver said this was the 4th Hyundai Ioniq 5 he towed that week. All dead. Car at dealer awaiting diagnostics, which because of backlog, could take 3 or 4 weeks.

My vehicle was 4 weeks old. On Friday 6/28/24, my vehicle displayed the following message on the dashboard, "Check Brake System". It disappeared later, and reappeared on the next day. I checked Hyundai's app, Bluelink. There was a alert on Bluelink, "Attention Needed". I opened the alert and it said that there was a Diagnostic Trouble Code, DTC C123501, that originated on 6/30/24. I took the vehicle to the dealership, Hyundai of North Miami, on the next business day, [XXX]. That morning, [XXX], as I started the vehicle, as I stepped on the brake to start the vehicle, the brake was considered "softer" than it was prior and I could feel the brake pedal go nearly all the way down to the base of the vehicle floor. On [XXX] they informed me that the ICCU needed to be replaced. They said that they hoped to have the ability to order the part on 7/5/24, as the computer system needed to do so was not working, and the part could potentially arrive in approximately 1 week. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The contact owns a 2024 Hyundai Ioniq 5. The contact received notification of NHTSA Campaign Number: 24V204000 (Electrical System) however, the part to do the recall repair was not yet available. The local dealer was not contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.

1. Uncertain which part failed. 2. safety was put at risk due to car not able to accelerate. Car would not go over 20 miles an hour on the interstate access road where traffic was going by at 50 –60 mph - four-way flashers were on and had to pull off at the first available turn but it was scary 3. Contacted local Hyundai; they are investigating a possible loaner, but haven’t said what they will do. 4. No inspections yet. 5. No warning or unusual events prior to lack of power/lack of acceleration. 6. Internet search showed that this problem has occurred to others.

Another complain for investigation PE 23-011. First car was DOA, second had an exploding pop sound and no longer charges, car is no longer usable, only 200 miles.