ICCU Failure. Known issue, occurred even after applying Recall 257 to the vehicle.
2022 Hyundai Ioniq 5 electrical complaints
Page 7 of 11: complaints 161 to 190 of 307, newest first, as owners wrote them.
The contact owns a 2022 Hyundai Ioniq 5. The contact stated that the vehicle failed to start and was jumpstarted. The dealer was notified of the failure and advised the contact to charge the 12 Volt battery. The contact stated that the 12 Volt battery was recharged; however, the failure recurred while driving 40 MPH a week later. A message advising to pull over immediately was displayed, and the vehicle lost motive power. The contact was able to veer to the side of the road. Towing services assisted the contact in recharging the 12 Volt battery, and the contact was able to drive to the residence. The contact stated that the failure persisted. The vehicle was taken to the dealer, where the contact was informed that the earliest availability for diagnostic testing and the recall repair of the federal safety agency Campaign Number: 24V204000 (Electrical System) was in 8 days. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 26,008.
Vehicle was having issues charging large battery. Would shut off immediately. Today 12v battery died, probably related to ICCU recall performed earlier this month.
The contact owns a 2022 Hyundai Ioniq 5. The contact received notification of the federal safety agency Campaign Number: 24V204000 (Electrical System) however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The contact stated that while attempting to start the vehicle, the vehicle failed to start. The contact stated that the battery was completely drained, and the vehicle needed to be jumpstarted. The contact stated that the failure occurred intermittently however, the failure had become persistent. Additionally, the battery warning light was illuminated. Due to the failure, the contact purchased several jumper cables. The vehicle was scheduled for a service appointment within several weeks. The dealer was made aware of the failure but confirmed that parts were not yet available. The vehicle was not repaired. The manufacturer was made aware of the failure and a case was filed. The failure mileage was approximately 17,500. Parts distribution disconnect.
On March 29, 2024 I parked my Ioniq 5 with the EV battery at ~65%. 3 hours later I received an alert that there was something wrong with the battery. Investigating the car, the auxiliary functions of the car would turn on. However, the dashboard reported the EV battery was at 0%. The power train of the car would not turn on and it would not drive. A tow truck was needed to take it to a local dealership.
I was driving 75mph on the freeway and I heard a pop and then the electrical warning system on the car lit up. I lost power to the car and was only able to accelerate minimally. There was a warning of low battery and the vehicle was going to lose power. I turned on my hazard lights and was able to get to the exit and was able to exit the freeway safely. Once the vehicle lost power I was unable to open the charger door, start the vehicle, use any of the key fob functions and had to jump the 12V battery, only to die immediately after. There is no pre-warning to this happening, it just shows the alert and the car loses all power. There are also problems with the vehicle after being plugged in to charge and it says "Charging Unsuccessful", or stops charging after a short period of time. It also will not charge to full capacity at home or the charging station. I receive no warning lights or messages about why the charge is not working. It took weeks to get the vehicle into the dealer, making it extremely unsafe to drive and the error has almost caused a major crash. My vehicle has been at the dealer and has not been diagnosed with any issues yet. The dealer has provided me with a rental vehicle...in which now I'm paying for gas. Reading through these other comments...who knows how long it will be to get my vehicle back, yet I'm still making my payments...this isn't
I was charging my car at home like I usually do and around 2am I received an alert on my Bluelink app that a charging alarm was detected. I saw that the breaker for my charger had tripped which it had never done before. I reset the breaker and tried to restart charging but was not successful. I turned on the car and immediately got the battery and EV warning lights telling me to stop the vehicle. I was charging my car at home like I usually do and around 2am I received an alert on my Bluelink app that a charging alarm was detected. I saw that the breaker for my charger had tripped which it had never done before. I reset the breaker and tried to restart charging but was not successful. I turned on the car and immediately got the battery and EV warning lights telling me to stop the vehicle. I had the vehicle towed to my local dealer and they determined it was the ICCU issue that has affected many Ioniq 5s. I had the software update done that was part of campaign [XXX] but it obviously didn’t work. It took a week to get a new ICCU fuse in and they also updated the software again in accordance with recall [XXX]. I am leery about another software fix solving this problem for good. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Battery fails to recharge (12V battery). No open doors, no accessories on (12V system automatically stops when car is off and door opens) Previous recalls completed. Pictures fail to upload, basically just says "12V is low, stop safely"
Started car. Received low power warning and a turtle. Car did not drive faster than 12 miles per hour. Car instructed me to stop vehicle. Unable to restart to drive to dealership.
My 2022 Ioniq 5 RWD died in my driveway in late February after first showing a "Check Electric Vehicle System" warning and limiting the vehicle's speed to 22mph while returning home from a short errand. I was initially able to at least turn the vehicle on, but the vehicle was completely non-responsive within two hours of returning home. If we had been traveling on the highway and/or far from home, we would have been in potential danger due to the low maximum speed and could have been stranded with a non-functioning vehicle due to the complete loss of power shortly after the initial incident. I ended up needing to have the vehicle towed to a dealership roughly 25 miles from my home. I was able to obtain a DTC before the vehicle died: (P1A90(96) [0x1A9096] Status: Test failed, Test failed (current drive cycle), Pending, Confirmed, Test failed since last DTC clear, Warning indicator requested). Since other Ioniq 5 owners have reported a similar problem, I suspected the problem to be a failed ICCU, and the dealership that is repairing the vehicle subsequently confirmed ICCU failure to be the problem. For reference, I had the ICCU software update installed in November of 2023.
I have a Hyundai Ioniq 5. I purchased it in July 2022 and have been driving it with no major issues except for a couple recall updates. On Monday, [XXX] I was driving home on the Highway when a warning light came on telling me to check EV Connection, it was an orange message. Then the light and message switched to red and displayed a battery symbol. The message said to stop vehicle and check power supply. My acceleration slowed down and I couldn't go above 25 mph despite attempts to speed up. There were many cars on the road when this happened, and I automatically turned on my emergency blinkers. There was a large 16-wheeler behind me that noted something was wrong and slowed down with his emergency lights blinking as well to support me. I panicked and found the nearest exit to come off the highway and before I could make it to the traffic light, the car shut off unexpectedly and completely stopped with no warning. Attempts to restart the vehicle did not yield positive results. After 2 hours of waiting for a tow truck in the middle of the road blocking traffic and waving people around my car, I was able to tow my vehicle to a dealership in NJ close by my house. As it was evening time, I left it at the dealership service center and dropped keys in drop box. I spent several days on the phone with Hyundai Service Center arguing to get my car checked as they told me that appointments were all booked, despite this being an emergency. I had no idea what was happening, but it was clearly inoperable, and I made that very clear. Finally, today, Thursday, [XXX] they confirmed that diagnostic testing showed ICCU failure. They advised that the part is on back-order, and they issued me a loaner for the time being. I have no idea how long this will take to fix. Luckily, I didn't have an accident, although very well could have with how quickly the issue escalated. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
On 2/24/2024 I was driving my Hyundai Ioniq 5 and heard a pop from the backseat area. Immediately I lost power and was unable to move the car out of the lane of travel or put on my hazard lights. Prior to the pop sound there were no issues that would indicate something was wrong. The dealership confirmed my suspension that the ICCU failed. My car had the software update for the ICCU months prior to this incident. The dealer repaired the car under warranty so no one besides the dealer has seen the failed part.
Even though I had this recall for ICCU handled several months ago it didn't correct a problem, and on 02/07/2024 while driving 50 mph, a sudden pop occurred and the vehicle lost power and acceleration. I was able to pull over and shortly after 15 min, the vehicle died completely. After towing to the dealer, a few weeks later they told me that it was ICCU again and that the part needed to be changed. At this time they have no ETA for when the part will come!
I was driving on the freeway on Jan 17 when I heard a pop and then the electrical warning system on the car lit up. I lost power to the car and was only able to accelerate minimally. I turned on my hazard lights and was able to get to the shoulder of the freeway and fortunately was close to an exit and was able to exit the freeway. It was towed to a dealership and I was told there was a problem with the ICCU.
A warning popped up "Check electric vehicle system", then a few minutes later an error popup appeared "stop vehicle and check power supply" and the car would no longer go above 27 mph.
Aloha, Our Hyundai Ioniq5 has been out of commission for almost 5 months due to a failure associated with the ICCU recall. In December after months of working with Hyundai they finally shipped the car to an EV certified dealer to complete the recall and fix the ICCU issue. When we got the vehicle home it still shows electrical warning lights and will not charge at home. The recall fix didn't work and it still has the ICCU issue. The ICCU apparently can cause greater safety issues with the EV system when on the road. Its important the the recall fix actually works and in our case it did not. We have now been without the car for 5 months. We've had 5 different claim managers from Hyundai USA and we are still waiting on a fix. We are only filing a complaint because this could be a known reoccurring issue for other early Ioniq5 owners.
The contact owns a 2022 Hyundai Ioniq5. The contact stated that the vehicle was unable to charge at the charging station due the vehicle not accepting the charge. There was a message stating that "Charging Unsuccessful", however, recently the message only read unit connected to charger. No warning light was illuminated. The vehicle was taken to the dealer and diagnosed with a failure within the Internal Charging Unit. The manufacturer was not made aware of the failure. The approximate failure mileage was 21,000.
It is UNKNOWN what component or system failed There was a sudden and total electrical failure with the inability to safely move the car. If this electrical failure had occurred on a turnpike or expressway it would have been a catastrophic event. Car was flat bedded to a dealership Dashboard warning provided less than 5 min time and 0.5 mile before ceasing to operate at all although car's computer thought that the car's health was OK.
Vehicle receives an error regarding the battery and unexpectedly shuts down.
I started the car, and saw a "Check Electric Vehicle system" alert on the dashboard, and began driving. I was not far from my home, when I saw several messages saying "Stop Vehicle and Check Power Supply" - and the car began slowing and becoming unresponsive while I was in traffic. With my wife and infant son in the car, and being less than I mile from my home I was able to proceed cautiously and make it there. This is likely a known flaw in the integrated charge control unit of this model, which was subject to a voluntary service bulletin put out by Hyundai. I took care of the recommended service and firmware update in September 2023, but it did not prevent this electrical system failure - the service bulletin should have advised replacement instead of putting my family in danger without any warning.
The contact owns a 2022 Hyundai Ioniq 5. The contact stated that while driving at 50–60 MPH, the Forward Collision Avoidance and Lane Assist warning lights were illuminated. The vehicle was taken to the local dealer, where the instrument cluster went blank. The dealer was unable to determine the cause of the failure. The manufacturer was contacted and opened a case. The manufacturer sent a technician to diagnose the vehicle. The technician stated that the VCU, battery, ICCU, and high-voltage battery needed to be replaced. The vehicle was repaired, but the failure recurred. The vehicle was taken back to the local dealer, but the vehicle was not diagnosed or repaired. The failure mileage was 19,000.
Vehicle had the Service Campaign 997: Integrated Charging Control Unit (ICCU) software update in October 2023 at around 4,000 miles. It's now January 2024, 7,300 miles and the vehicle is currently at the dealership. The dealership confirmed it needs ICCU and Fuse replacement. Waiting for update on timeframe for ICCU part to become available. The car was showing "Check electric vehicle system" on the dashboard. It would not charge with Level 2 home charger. When I took the car to the dealership it started displaying a "Stop vehicle and check power supply" warning as I was arriving and the vehicle would not drive more than 25 mph.
On Dec. 29, 2023, while drively slowly in a parking lot, we heard a loud "pop" from the rear of our 2022 Hyundai Ioniq 5 (approx. mileage 15,800). Then an amber colored dash warning came up saying "Check electrical system." Very soon thereafter, there was an audible warning alarm and a flashing red dashboard warning "Stop vehicle and inspect charging system" along with a red battery outline symbol. Almost immediately our top speed was reduced to around 20mph or so. We stopped in a safe place and had the vehicle towed to the closed Hyundai dealer (Zimbrick Hyundai West, Madison, WI). The dealer subsequently confirmed a failure of the Integrated Charging Control Unit (ICCU). The ICCU is expected to be replaced by Fri. Jan. 12.
My car suffered an ICCU and high-voltage fuse failure despite having been previously inspected as part of Service Campaign 997, which found no reason to replace the parts. After 24,700 miles and 16 months of service, the parts failed. This was only 4 months after the service campaign was completed. Similar to others who have reported ICCU failures, I suffered a rapid loss of power on the road, and within minutes, a complete loss of motive power. I received a “check EV system” and “reduced power” warning, followed very quickly by “check power supply, pull over immediately.” While I was able to pull to the roadside, this easily may not have been the case, causing significant danger. The dealer confirmed the issue and eventually replaced the parts. A loss of motive power within minutes or seconds is potentially life-threatening. Hyundai’s proposed fix for the issue — inspection and perhaps software update — is clearly inadequate to address the problem, since my vehicle failed after the service campaign had already been performed.
The contact owns a 2022 Hyundai Ioniq 5. The contact stated that the pedestrian warning system was inoperable while reversing. Additionally, the contact stated that the battery was 92 percent charged; however, while driving 30-40 MPH, the message "Electric Power Failure" was displayed. The contact turned off the heater and the radio and continued driving. The contact stated that while parking the vehicle, the message "Electric Power Failure - Stop Immediately" was displayed and several alarms sounded. The contact notified the dealer and was informed to drive the vehicle to the residence and the vehicle would be picked up. The contact stated that while driving to the residence, the failure recurred, and the vehicle failed to respond upon depressing the accelerator pedal while driving uphill. The contact became aware that the vehicle had lost electrical power. The contact was able to veer to the side of the road. The vehicle was towed to the dealer, where it was diagnosed that the integrated charging control unit (ICCU) needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 9,600.
The vehicle was being driven normally on city street and I heard a thump in the rear end of the vehicle. Very soon after, got a message on screen to check electrical charging system with the indicator lights for 12 volt battery and EV system illuminating. Parked the vehicle a kilometer after thump to deliver something to a friend (the car sat for 10 minutes). Resumed driving and then within a kilometer received a message that drive power would be limited -- significant decline in drive power... put my flashers on but did not stop because on busy street with no parking ... within two blocks, message of "stop vehicle and check power supply" appeared with full drive power ending within one block -- within that block, I was able to turn down a side street and coast down a hill to a parking lot. Attempting to turn vehicle off, the screen showed erratic behavior and headlights went on and off. Finally, was able to get everything off but was not able to lock the vehicle. If this drastic loss of power had occurred on a highway, there is a likelihood that such a power failure would have led to an accident.
Known level 2 charging issue with Hyundai Ioniq 5 vehicles. Overheating issue with charging system, previously the issue shut down charging with a temperature exceeded ~212 Fahrenheit. TSB issued that "throttles" down charging rate, irrespective of the brand of level 2 charger doubling the time to charge the vehicle. Not as advertised and significantly reducing the utility of the vehicle.
Feared ICCU leaving us stranded after reading so many reported failures, took car to dealership where they inspected and did some ineffective software update, few weeks later experience EV warning light and sudden loss of power, car wont go more than 25 so we parked and were effectively stranded. Dealer suspects ICCU....great. exactly what we wasted time trying to prevent. A KNOWN PREDICATABLE PROBLEM IS CALLED A DEFECT!!!!!!
The contact owns a 2022 Hyundai Ioniq 5. The contact stated while driving in rain or snow the rear windshield failed to be cleaned. The contact stated that the failure was a dangerous while driving at night while the headlights from vehicles behind caused the rear windshield to become opaque. The contact questioned a dealer and was informed that the vehicle was designed that way and that the windshield needed to be cleaned manually. Additionally, the contact stated that the vehicle lost electrical power while driving at approximately 60 MPH with the cruise control activated. The contact stated that the vehicle lost motive power with several unknown warning lights illuminated. The contact pulled over, stopped, restarted the vehicle, and the vehicle functioned as needed. The contact stated that the failure recurred once. The manufacturer was informed of the failure. The failure mileage was approximately 22,000.
The vehicle show an error message relating to the electrical system, refused to go over 24 mph for a short time, then went completely dark with no control and wheel locked. Dealer says ICCU + fuse is at fault, but there is no date for a new part. Vehicle is undriveable until new part comes in.
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