Hyundai Ioniq 5 Complaints (2024)

222 consumer complaints on file.

#11656191April 22, 2025
ELECTRICAL SYSTEM
-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.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11654547April 14, 2025
ELECTRICAL SYSTEM
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).
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11653324April 7, 2025
ELECTRICAL SYSTEM
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.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11653074April 6, 2025
ELECTRICAL SYSTEM, POWER TRAIN
Error message indicate loss of charge capacity. Car slowed down, with enough range to pull off the road. Dealer indicates the integrated charge control unit (ICCU) failed, and quit charging the 12 volt system. Waiting for parts (1 month so far). Seems like the same issue reported under NHTSA recall 272 for the Ioniq 5 Does Hyundai have a list of failed ICCU’s, and whether there might be a batch of these units that are failing, or is this just a random occurrence?
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11652688April 3, 2025
ELECTRICAL SYSTEM, VEHICLE SPEED CONTROL, POWER TRAIN
The Integrated Charging Control Unit (ICCU) failed while I was driving to work. I was on the highway in the middle of a blizzard and the "Check Electric Vehicle Systems" warning popped up on my dash. It then when into a turtle mode and my car would no longer go above 15 - 20 mph. I had to exit the freeway very abruptly because my speed was dropping quickly. It was already extremely dangerous driving that day, this just added on top of it. It is available for inspection, it's been sitting at my dealership since March 6th because the ICCU is back ordered and there is no ETA when one will become available. The dealership has inspected and confirmed it is a faulty ICCU. There were no other problems with the car until the warning appeared on the dash. The ICCU has had 3 manufacturer recalls for the ICCU previously. Which I have gone in to the dealership for.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11652394April 2, 2025
VISIBILITY/WIPER
I purchased a 2024 Ionic 5 on January 29th on a day without rain/snow. The first time it rained I found out that there was no rear wiper. I assumed there to be one as its a SUV with a slanted back window, not straight up and down. When it rains or snows the water/snow just sits on the back window, making it impossible to see out the back window. I know every Ionic 5 is like this. On researching the 2025's now have them due to customer feedback. I don't believe this is a convenience issue, but a safety one not being able to see out the back window.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11651827March 31, 2025
ELECTRICAL SYSTEM, FUEL/PROPULSION SYSTEM, VEHICLE SPEED CONTROL
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.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11651078March 27, 2025
UNKNOWN OR OTHER
On Monday morning (3/24/2025), my 2024 Hyundai Ioniq 5 lost power and I received the "Check electric vehicle system warning." After that I received another warning that said, "Stop vehicle and check power supply." The car had lost most of its power by this point, but I was less than a mile from my house, so I was able to make it home by turning the car on and off every couple of blocks. It was towed from my house to the dealership the same morning, where it's been ever since. I was just informed that the ICCU needs replacement. My understanding is that this is a prolific problem with this car, and I'm very concerned because my car is less than 8 months old and has less than 8,000 miles on it.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11650928March 26, 2025
SERVICE BRAKES, FUEL/PROPULSION SYSTEM, FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING
My wife was parking the 2024 ioniq and it lurched forward at a high rate of speed and slammed into another car parked in our driveway and drove that vehicle through our home garage door. She feels certain that her foot was on the brake, but even if she accidentally slipped and appleid the brake the forward collision system should have prevented the accident additionally the impact occurred with such force it is unlikely due to human error as it pushed our very heavy 4Runner back 3 feet and thorough a closed garage door.
Crash:
Yes
Fire:
No
Injuries:
0
Deaths:
0
#11650776March 26, 2025
ENGINE, ELECTRICAL SYSTEM
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.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11650176March 24, 2025
ELECTRICAL SYSTEM, ENGINE, VEHICLE SPEED CONTROL
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.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11644857February 25, 2025
ELECTRICAL SYSTEM, POWER TRAIN
About 2 minutes after I started driving, I got a "Stop Vehicle and Check Power Supply" warning. The car slower to about 20 mph and would not go any faster. After returning home, I had the car towed to the dealership. Hyundai said that the ICCU unit failed. This was days after the same dealer performed recall work that was supposed to address ICCU issues.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11643656February 19, 2025
ELECTRICAL SYSTEM
Car had a warning Check Electrical System and the 12volt drained. ICCU Failed car undrivable.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11643414February 18, 2025
UNKNOWN OR OTHER
Car won't super charge. ICCU has been backordered for a month.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11643201February 17, 2025
ENGINE
Battery warning appeared. Car stopped after a few minutes. Car can’t be started. Complete list of power. Dealer confirmed it was the ICCU. I had a recall service done in 11.19.2024y last time I got an info about a recall was 1.9.2024
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11642733February 14, 2025
ELECTRICAL SYSTEM
ICCU failure
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11640396February 3, 2025
POWER TRAIN, ELECTRICAL SYSTEM, FUEL/PROPULSION SYSTEM
Started car and proceeded to drive to work. 1 mile from home, heard a "pop" noise and the car displayed "Check Electric Vehicle System" warning and went into a "turtle" mode that limited speed. Luckily I was on a side street and had not yet made the turn onto the main highway or it may have obstructed traffic or resulted in a crash. I was able to return home and have the car towed back to a Hyundai dealer for diagnosis and repair. The dealer identified the issue as the ICCU fuse and ICCU itself that needed replacing. All previous recalls and software updates were completed, including the latest ICCU recall (272?) which was completed on December 3. There have now been multiple software updates and recalls targeting this part, but it still resulted in the vehicle losing power and being inoperable.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11640156February 2, 2025
POWER TRAIN, ELECTRICAL SYSTEM, FUEL/PROPULSION SYSTEM
Our 8-mo old 9800 mile Ioniq 5 failed to maintain its 12v battery while parked for a week. It was dead when we came back to it. Jump started successfully. I replaced the OEM battery with an AGM battery, which the car failed to maintain charge on after 2 weeks. At that time, while driving, the car displayed "Stop vehicle and check power supply" and "check vehicle electrical system." I had a battery monitor installed which showed the car only had 44% charge left in a new 12v battery. By the time we made it to the dealer 15 minutes away, the car was barely above 20% on its battery, and was about to stop on the road. The car has been diagnosed with an ICCU failure and replacement parts are 2+ months backordered. This car appears to brick itself without much warning to the driver -- and clearly Hyundai's software-only recalls are not fixing the root cause of this dangerous safety issue.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11633907January 3, 2025
ELECTRICAL SYSTEM
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.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11632589December 27, 2024
ELECTRICAL SYSTEM
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.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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