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.
Last night I had an update pushed to my car. I pressed ok. today while backing up i heard a slight pop. my car then said check battery. then second alert said stop vehicle and check power supply. others with this car seem to have this issue as well and is taking a long time to fix and resolve.
On 4/24/23, without an prior warning vehicle suddenly became undrivable. Received message: "Stop vehicle and check power supply". Car could lim along < 25mph for short distances. This condition along with indifferent Hyundai roadside assist left me stranded out of state for 5 hours before telling me to find my own way to tow the car. Car is at dealership with a diagnosed ICCU/ICCU fuse issue. To date I am being told that the parts are on back order for 2-3 weeks. Based upon online posts by others with this issue, this is not a realistic expectation. To date, Hyundai has yet to offer substitute transporation, relief from monthly paments, and reimbursement of all expenses incurred as a result of the loss of this vehicle.
I was driving to the dealership due to an unusual message. I was on a main street less than 2 minutes from home when an alert came on the screen that said "critical 12v system" I believe. The screen went off shortly after so I was unable to fully capture it. Within 20' the car stopped itself on the road and shut off. All systems were offline with a total power loss. I could not turn my hazards on, the wheels were locked and I was unable to move the car. I had to stand outside my car to alert oncoming traffic to avoid me. Had I been on the highway when this happened I feel it could have turned deadly quickly, and would have been far worse at night It has been confirmed that the ICCU and high voltage fuse had failed. There are many other owners online speaking of the same problem. The error prior to this reported in the car was "check electric vehicle system." No extended details available, and the online app that shows car codes said "all systems normal" and still does even though the car is entirely dead.
12 volt battery not recharging from the main EV 77kw battery. This makes it so that car systems cannot start that started late March and went into the dealer April 14,2023, after it happened a dozen or so times.
Suddenly whilst driving, I heard a soft "pop" and emergency alert sound and message were displayed. Car lost almost all power, but was able to move forward at 12mph to park in a safe place. Car became fully inoperable and required a flatbed tow to dealership. Was diagnosed as an ICCU problem (associated with both 12v battery failure and possible bluetooth related battery drain). Car has been in shop for 6 weeks, waiting on parts. No ETA from Hyundai. If this had occurred 3 minutes later I would have been driving at high speed on the interstate in morning commute traffic. Prior to the "pop" there was no warnings or errors or problems - car worked perfectly.
- Issaquah, WA, USA
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Driving the car on the highway, EV warning light came on dash. Car went into turtle mode for approximately 5 miles. Then the dash board changed to shut car down now. Car would not charge at home. Had to tow it to the dealership. Car has now been at the dealership waiting for parts for 5 weeks. ICCU and a fuse need to be replaced.
We've owned the car since new, just over one year. The car was performing well one day and my wife went to her evening work. When she returned to her car around 6pm, the car wouldn't respond to the key fob and the door wouldn't open. She was able to open it with a key, but the car wouldn't start. It's a fully electric car and NOTHING lit up or made a sound. The traction battery had ample charge, but she called Hyundai and the car needed a "jump" from a repair vehicle that was called out, much like an ICE car needs the occasional jump...we assumed an interior light was left on, but the car's app didn't inform either of us of any issue prior to this...the same exact scenario repeated itself about one week later and we had the car jumped again and brought to our dealer, Burns Hyundai in Marlton, NJ. They determined that "nothing was wrong" which made no sense to me. My wife picked up the car and approximately one week later, the exact same thing happened again. This time we dropped the car off at the dealer where it's been for nearly one month. With their customer service lacking and information not forthcoming, I had to go to the dealer myself to get some answers. It seems the computer was telling then some codes were coming through about the battery, but nothing more. It didn't need replacing and they couldn't replicate the problem over a period of weeks...There are MANY online reports of this car having 12V battery and ICCU issues. Our dealer has several Ioniq5s awaiting ICCU replacement for the same problem as my car, but they "can't get the part from Hyundai". While our car at times won't start, they aren't seeing that in their shop now, awaiting repairs on cars that apparently die when driving also with 12v battery problems. Our car is a lemon and we intend to retain counsel to assist us in its repair. https://www.theautopian.com/why-everyones-favorite-electric-car-keeps-stranding-its-owners/?fbclid=IwAR3yNgwVKtaGhGPd7HBz79tOV-UI1myLdmyrwDzcOJZfLarsG80b_6NJLpk
Pulled out of my driveway and halfway down the street, warning message pops up on display, "Check electric vehicle system". Turned down another street to head back home and receive another warning with audible beeping "Stop vehicle and check power supply". Dealership says its a known issue and to not drive it. Must be safety related or driving it wouldn't be a problem.
On March/17/2023 @24962 miles Integrated Charge Control Unit failure + 30 AMP Fuse. Hyundai Corporate said parts back order May---June/2023 time frame. 3 inch orange circle came up on my dash with red triangle saying PULL OVER IMMEDIATELY! I was two blocks from dealership and with no problems drive to the service advisor where it died in front of them. Service advisor guessed that the pop I heard just before the circle appeared was the fuse and I drove in on the 12volt battery. I am in the Buy Back process with Hyundai Corporate Case#21170992
The car was driving fine, and an error popped up indicating to pull over and check battery. As I am going to pull over a red flashing indicator pops up saying -??pull over and check battery-??. As I start to pull over the car speed drops to 25 miles per hour and fully dies as I make it to the side of the road.
The car displayed an unforeseen warning and shut down in the middle of traffic around 720am, February 2nd 2023. Shut down vehicle and restarted, battery light came on along with other warnings. Moved vehicle to adjacent parking lot and towed to Hyundai dealership same day and have not been given a definitive answer nor an expected repair time, we-??re in the 9th week-??.still no answers.
The 12v battery died because the electric battery drained it. Ultimately, the electric battery is dead on a 1 year old car and needs replacement. The night before the failure, the car had 145 miles and drained the battery to 83 miles. Prior to that and an ongoing complaint to the dealership from November until this point, the range went from 245 miles per charge to 190 to 219 miles per charge. The 219 was after a system update in January.
The car SHUT OFF while driving cause of a 12v battery issue. imagine turning onto a major road just for this to happen. Car wouldn't go above 25mph and close to it's death it wouldn't go above 12 then just STOPPED. I couldnt lock it, I couldnt turn it on. I couldnt even move it from drive to park. How is this safe?!
Was in the middle of driving when a loud alert sounded and the dashboard showed the error "Stop vehicle and check power supply". The car otherwise behaved normally. I pulled into a parking log, looked at the only thing I knew how to look at (12v battery), confirmed it was still plugged in, and turned the car back on. The error was still there, but now the car wouldn't go over 26mph. I limped home, called a tow truck to take it to the nearest Hyundai that services electric vehicles, and they told me they'd have to replace the ICCU, which is backordered.
I was driving to my parents house when suddenly a message popped up on my driver screen saying that the electrical system has a problem. Driving a little more to reach my parents house and it starts saying to stop and check power supply. We ended up making it to my parents house and decided that it was unsafe to drive anymore with the error message going off. I called a tow truck to tow it back to our dealership in Fremont. When the tow came, I thought we could drive it on the bed but turns out the vehicle wouldn't start. We jumped the 12V battery and found that we could put it in neutral and somewhat drive it until it drained the external battery used to jump the 12V battery. With the car stuck halfway on the bed, we managed to put it in neutral and pull the car up using the tow's harness. Took it to the dealer and after a few days they said a fuse blew and that something called the ICCU was bad and needed to be replaced.
Charging with level 2 / 240 vac charger stops frequently after 5 months of ownership. Car will not complete charge. Seeing on message boards that this is common problem with this model.
Car is 13 months old, 13, xxx miles. Driving car at 60mph we heard a bang from the rear of the car and lost power almost immediately. Car displayed warning "Check Electrical Vehicle System." We shut it off, then restarted in limp home mode, warning now said "Stop Vehicle and Check Power Supply." We then turned off the heater and the car got to 55MPH and I could get the 5 miles back to home. The 12 volt batter no longer charges, the car will not accept a Level 2 charge. IT was towed to Hyundai for repairs. Research suggests that the Integrated Charge Circuit Unit (ICCU) and the accompanying 450V/40 AMP fuse are both bad.
I was doing a 3-point turn in the driveway, and heard a pop sound from under the rear seats. A warning light came on in the dash, after a little bit of time the warning changed into an error that stated pull the car over and do not drive. OBD sensor reported codes P1A90 and P0C17. Car also went into "turtle" mode preventing it from being driven normally. Had it towed to the dealership, but took 2 weeks for them to inspect it. Once they got to it, they quickly determined it was a blown high-voltage fuse, and a fault in the ICCU (integrated charging control unit). Was told there is a national backorder on the ICCU and no ETA on delivery. I was also told I am one of three Ioniq 5s waiting for a new ICCU. I've seen many reports online of many Ioniq 5s having this same issue, and very long wait times for ICCU replacements.
We were driving vehicle on a neighborhood street with a speed limit of 45 miles per hour. When we got a "High voltage fault warning" from the car. I continued to drive about 10 second more and got a second warning. A different series of warnings appeared the last one being "please pull over and check your electrical system". We pulled into a neighborhood street, turned off the car. We decided to try to make it home which was less than 1/2 mile. Once I restarted the car, both messages cycled through the dashboard. Then the car lost the ability to accelerate past 25 miles per hour, no matter how much I stepped on the throttle.
The contact owns a 2022 Hyundai Ioniq 5. The contact stated while driving 59 MPH, a warning message advising to stop the vehicle due to low battery was displayed; however, the main battery was fully charged. The instrument panel lights turned off and the vehicle decelerated to 23 MPH. The contact veered to the right lane. While driving to the dealer, the vehicle stalled. The vehicle was towed to the dealer, where the Integrated Charging Control Unit (ICCU) assist, and the high voltage fuse were upgraded. Additionally, the battery was replaced. The vehicle was not repaired and remained at the dealer. The manufacturer was notified of the failure and informed the contact they could not provide vehicle rental assistance because the dealer was unwilling to assist. The failure mileage was approximately 28,000.
A D V E R T I S E M E N T S
- Monaca, PA, USA