This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.
So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.
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.
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.
- Chicago, IL, USA
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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.
The car gave an warnings of -??Check Electric Vehicle System@ and started slowing down in the middleman of the road. I could have been easily rear ended or got into a serious injury. After googling, it seems almost all if not most of ioniq 5 are having this issue after certain mileage
The car started reporting error messages including "Stop vehicle and check power supply". It briefly went into limp mode before dying completely. Flat bed to dealer who can't begin diagnosis for at least a week. This sounds identical to the ICCU issue that many owners are experiencing.
My 12v battery died on 11/12 while my main battery still had 52% charge remaining. Had to jump the battery to get the electrical system to work. Since then several of the cars electrical systems are not working. This is a known issue online that Hyundai has responded to but the dealer is saying that they are not aware.
Car died in a Wegmans parking lot and dealer is telling me it will take 8-10 days to diagnose the problem which is known very well to the manufacturer and dealers. The ICCU has failed.
The 12 volt battery keeps failing. Every time I contact Hyundai AutoNation it takes forever for them to do anything about it and they don't seem to understand
The car suddenly showed a warning on the screen asking me to park and in a few seconds went completely dead. It won't start at all. I can't even unlock the car. I had to call roadside assistance and have them tow the car to Ideal Hyundai dealership in Frederick, MD. It's been 4 days and the dealership can't diagnose the problem or won't communicate what the issue is.
A D V E R T I S E M E N T S
- Kilauea, HI, USA