Hyundai Ioniq 5 Complaints

1,350 consumer complaints on file.

#11731464April 15, 2026
ELECTRICAL SYSTEM, POWER TRAIN, FUEL/PROPULSION SYSTEM
Car charged as scheduled overnight 3/28/26 but was dead the morning of 3/29/26 and when it was jumped gave error "Battery overheated, please stop and exit vehicle" and "check electrical system" - vehicle has been in shop for 16 days, no diagnosis except that it "probably" needs a HV battery.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11731284April 15, 2026
ELECTRICAL SYSTEM
Known ICCU issue: the 12v battery died for no reason rendering the car undrivable.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11731279April 15, 2026
ELECTRICAL SYSTEM
The issue involved a failure of the 12V battery system in my Hyundai Ioniq 5, which powers essential electronics and allows the vehicle to operate. The battery suddenly lost charge while I was driving, causing the vehicle to become inoperable. The car was towed to a dealership, and the battery and related systems are available for inspection. My safety and the safety of others were put at risk because the failure occurred on the road, forcing me to pull over unexpectedly. This created a hazardous situation, especially in traffic, as it increased the risk of a collision or leaving me stranded in an unsafe area. The vehicle has been taken to a dealership for diagnosis, they had stated there is a recall on this vehicle, iccu unit failed and needs to be replaced. It has been inspected by the dealership service department, but not by police or insurance representatives. Prior to the failure, there were clear warning lights or messages indicating an issue. The problem appeared suddenly while driving, within 5 minutes the car shut down.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11730806April 13, 2026
ELECTRICAL SYSTEM
On [XXX], my 2024 Hyundai Ioniq 5 experienced a sudden and complete failure of the Integrated Charging Control Unit (ICCU). The failure rendered the vehicle inoperable without warning, requiring it to be towed to a dealership. The vehicle is currently located at AutoNation Hyundai in North Richland Hills, TX and should be available for inspection upon request. This failure created a significant safety risk. The vehicle lost functionality unexpectedly, which could have resulted in a dangerous situation if it had occurred at highway speeds, in traffic, or in an unsafe location. A sudden loss of power or inability to restart the vehicle presents a clear hazard to both the driver and others on the road. Prior to the failure, there were no clear warnings indicating an imminent critical issue. A 12V battery issue was suspected at the time of failure, and roadside assistance replaced the battery, but this did not resolve the problem. The root cause was later identified as an ICCU failure. The problem has been confirmed by an authorized Hyundai dealership (AutoNation Hyundai, North Richland Hills, TX) on April 10, 2026. The dealership determined that the ICCU requires replacement, with an estimated minimum repair timeline of four weeks due to part availability. The vehicle has been inspected by Hyundai roadside assistance and an authorized Hyundai dealer. No inspection has been conducted yet by the manufacturer directly, law enforcement, or insurance representatives. This issue appears to be consistent with widely reported ICCU failures in Hyundai Ioniq 5 vehicles, suggesting a potential systemic defect that may warrant further investigation and possible recall action. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11730728April 13, 2026
FUEL/PROPULSION SYSTEM
While charging my vehicle at home using a level 2 charger, the ICCU failed. When it failed, it caused a power surge and my level 2 charger “exploded.” It also caused the master breaker to trip, cutting the power off to my entire house. The vehicle no longer charges, will not drive over 25mph and has to be towed to a dealership for repair. Also, the level 2 charger is fried and no longer works.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11730691April 12, 2026
BACK OVER PREVENTION: WARNINGS
On April 12, 2026, I was using the parallel parking assist feature on my 2026 Hyundai Ioniq 5 Limited AWD. I was parking on perfectly level ground with a parked vehicle behind the empty space I was attempting to enter. During the maneuver, the collision sensors activated, but the vehicle continued accelerating toward the parked car. I had to press the brake to stop the vehicle and avoid a collision. This created a safety concern because the system appeared to continue the maneuver despite the active collision warnings.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11730615April 12, 2026
ELECTRICAL SYSTEM
I heard a loud pop and my car died and was undriveable in about 5 minutes. Told it was my iccu failure and fuse popping. Apparently this is a common issue. I was almost killed as I was kn thr interstate and needed to be towed. Nothing worked
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11730552April 11, 2026
ELECTRICAL SYSTEM, ENGINE
For the second time, the integrated control unit, ICCU, has failed to this is AFTER being replaced under the recall. The recall solution has not fixed the problem, and is a fake bandaid on a problem that means cars will totally stop working in the middle of the road. This is totally unsafe and unacceptable.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11730459April 10, 2026
ELECTRICAL SYSTEM, ENGINE, FUEL/PROPULSION SYSTEM
The 2022 ioniq 5 was bought used with 43k MI and within 2k miles of driving in 50-85F climate and 7kwh l2 charging I witnessed the orange check EV light flash while I was driving on the highway. I exited and powrr cycled the car and the EV light remained. The next morning the orange check EV light was gone. I went to the dealership for a diagnostic and they said they could not replicate the error code or had found any history of the error code coming up without proving to me or showing me any substantial evidence that they tested for anything at the Escondido Hyundai dealership in California. I escalated the issue with Hyundai corporate and was assigned a case manager that ultimately gave me the same answer that they could not replicate any codes and that I should take the car back and drive normally. After extensive research I found that the orange check ev light is a more dangerous sign than the red check ev light because it indicates that the ICCU unit is about to fail. Research shows that due to thermal stress the ICCU will inevitably fail after the orange check AV light comes on. Further research shows that Hyundai had officially stated a 1% failure rate for the ICCU unit in all of their EVs built on the e-gmp cars to date but some projections are at 10% failure rate or higher and that Hyundai Kia is downplaying the issue similarly to how they tried to do the same with the Theta 2 GDI engines that they had been sued and were responsible to pay over $300 or so million dollars as well as $24 million to a employee whistleblower a few years ago. I highly suggest that the nhtsa or other organizations that have the power to force Hyundai Kia to do the right thing so that no further lives are at risk from these ICCU units that have flawed designs that have not been fixed,only remedied via software update or replaced with refurbished units at the most with inevitable failure as thermal stress is experienced.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11730289April 9, 2026
STRUCTURE:BODY, ELECTRICAL SYSTEM, UNKNOWN OR OTHER
On XXXXX, while parked at a campsite approximately two hours from my home, the vehicle displayed an “electrical failure” warning on the dashboard. The vehicle had been parked for less than 20 minutes when this issue occurred. I contacted Hyundai customer support that same evening to report the problem (Case #XXXXXX). On April 4, 2026, the vehicle was towed via Hyundai roadside assistance to Winner Hyundai in Dover, Delaware, where Tracy is my current point of contact. This situation left my family of four, along with our belongings and pet, stranded without transportation. Despite significant effort, we were unable to secure a rental vehicle in the Dewey Beach area, even after contacting multiple rental agencies and the dealership directly. This was later resolved, and I am currently in a rental through Enterprise; however, the stress and uncertainty of potentially being stranded was significant and unacceptable. While at the dealership, my wife witnessed the tow operator unloading the vehicle without proper equipment to safely lower it. As a result, the vehicle’s hitch made forceful contact with the pavement and became lodged. Multiple dealership employees observed the incident. After considerable effort to free the vehicle, it was released abruptly and rolled into another vehicle on the lot, causing additional damage. An argument then occurred between the dealership owner and the tow operator, which my wife was forced to witness. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Crash:
Yes
Fire:
No
Injuries:
0
Deaths:
0
#11730250April 9, 2026
UNKNOWN OR OTHER
On 3/19/2026. Battery was at 20% SOC. Plugged in my home L2 charger. Car did not start. Took vehicle to dealer the next morning 3/20/2026. It was diagnosed as an ICCU failure. Parts ordered car left at dealer but still waiting on 4/9/2026 for issue to be resolved.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11730155April 9, 2026
POWER TRAIN, ELECTRICAL SYSTEM
There was sudden power reduced and turn to the limp mode(Turtle symbol popped up). After pull over my vehicle to highway shoulder, the vehicle became total power loss. Unable to drive anywhere. It was a dangerous situation for my family. We waited tow car and took my vehicle to Hyundai dealership which located close to my house. They diagnosed my car and after a day. They told me it needs to be replaced a ICCU assembly and Fuse. There was no ETA for the parts. They provided me a loaner’s car. After about 15 days, they fixed and I was able to take my car.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11729904April 8, 2026
ELECTRICAL SYSTEM
2025 Hyundai Ioniq 5 XRT, VIN [XXX] . Four 12V battery failures requiring jump-starts in under 800 miles of ownership. No fault codes stored at any failure event. Visit 1 (01/12/26, ~100 mi, RO HYCS79193): Factory OEM battery confirmed failed by GDS. Replaced under warranty. Visit 2 (01/30/26, ~300 mi): Second OEM battery confirmed failed by GDS. Replaced. Visit 3 (03/31/26, ~800 mi): Aftermarket AGM tested healthy but required jump-starts. GDS recorded 12V SOC dropping from 99% to 21% then recovering to 79% — consistent with intermittent LDC output interruption, not parasitic drain. Hyundai Techline contacted. No repair performed. Visit 4 (04/08/26, ~800 mi): AGM measured 5.5V, required jump-start. Maryland Lemon Law notice submitted to Hyundai Motor America. The Ioniq 5 has no alternator — the 12V system depends entirely on the ICCU’s DC-DC converter. Hyundai has acknowledged this ICCU defect under NHTSA Recalls 24V-204 and 24V-868, covering 2022–2024 Ioniq 5 models. The 2025 model uses the same E-GMP platform and ICCU architecture but is excluded from both recalls. My symptoms — repeated battery failure with no DTCs, confirmed SOC anomaly on GDS, failure across two battery chemistries — match the subclinical LDC failure mode documented in those recalls. A Hyundai North America case is open and engineering has been engaged. No repair has resolved the defect. I request NHTSA investigate whether the 2025 Ioniq 5 is affected by this defect and consider expanding Recall 24V-868 to the 2025 model year. Please add this complaint to Investigation PE23-011. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11729789April 7, 2026
FUEL/PROPULSION SYSTEM, ELECTRICAL SYSTEM
2/28/26 Driving home, heard a loud pop, notice is on the dash say check vehicle electrical system. Vehicle begins to slow down and eventually die. Called the manufacturer and had it towed to the dealership. The ICCU had failed.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11729747April 7, 2026
ELECTRICAL SYSTEM
My on Thursday, April 2, my 2024 Hyunda Ioniq 5 displayed the "Check Electrical System" message displayed. I had just started the car. I started to lose propulsion on a busy street [XXX] ). I managed to get the car to [XXX] and had to pull over. I had the car towed to the Luther Hyundai, [XXX] . On Monday, April 6, the dealer informed me the ICCU failed. The ICCU and a fuse were replaced. I picked up the car April 7. Although Hyundai has supposedly fixed the ICCU problem, it continues to fail, as mine did. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11729695April 7, 2026
ELECTRICAL SYSTEM, FUEL/PROPULSION SYSTEM, POWER TRAIN
7 incidents of electrical drive problem incidents 1-3car would not start despite full battery Incident 4 same thing and car went to dealer, they said know problem and they would fix it overnight by downloading new software and charge about $400 for new 12V battery Incident 5 While on freeway using cruise control card speed varied wildly I disabled cruise control and with manual throttle same problem Incident. 6 In middle of traffic car went blank no lights or anything. I tried to restart 3 times and nothing, so I sat back and was in process of calling for tow. I did nothing and car violently accelerated and turned into steel pole. Only injury I had was bump on head that went away. As soon as the ghost mode engaged I hit the brake which likely prevented more damage to me, but front end of car was damage Incident 7 While I was detained someone else drove car to dealer and driver reported felt like driving on ice with rapid direction and speed changes Currently at dealer where neither dealer or Hyundai will take of problem and I get run arround from Hyundai and dealer. Dealer claim the don’t know is the problem. Dealer has had car for approximately 65 days Bottom line, the car is totally unsafe to drive and very dangerous
Crash:
Yes
Fire:
No
Injuries:
1
Deaths:
0
#11729574April 7, 2026
ELECTRICAL SYSTEM, FUEL/PROPULSION SYSTEM, POWER TRAIN
On 11/7/25 , we were driving my 2023 Hyundai Ioniq 5 to a friend's home in rural [XXX] , a trip of approximately 160 miles. At around 5:00 PM, we stopped about halfway to our destination to charge the battery. The car would not charge above 47%. While we continued to attempt to charge the battery, the console displayed a Check Electrical System Warning message, and we received the DTC P1AA700 via BlueLink. We were concerned about our safety on the drive up to the mountains. We were afraid the car would stop running on the highway and cause an accident. We were also concerned the car would die in a remote area and we would be stranded. However, the dealership was closed for the weekend. We drove carefully to our friend's home. I contacted Stevens Creek Hyundai on 11/10/25 and arranged to bring the car in on 11/11/25. It had 13,652 miles on it at that time. Eventually, the dealer confirmed the DTC P1AA700 and said they would need to order a new EGMP battery. The car was in the shop for 128 days, waiting for Hyundai to "build a battery" in [XXX] . Eventually, Stevens Creek Hyundai replaced the EV battery and I picked up the car. Given the delay in repairing my car and the growing evidence of Hyundai battery failures, we wanted to report this problem to the authorities. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11729532April 6, 2026
FUEL/PROPULSION SYSTEM
While driving at most speeds vehicle feels like it is pulsing in power. It’s an EV and I can best describe the feeling to be like when a gas powered vehicle has a severe skip in the engine
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11729307April 5, 2026
ELECTRICAL SYSTEM
In summer 2025, the ICCU (Integrated Charging Control Unit) failed and was replaced under a Hyundai recall at no cost. On December 4, 2025, warning lights reappeared. College Park Hyundai diagnosed a faulty battery related to the prior ICCU failure. I paid out of pocket for a 12-volt battery replacement and additional maintenance, as the dealership claimed the battery was not covered. A “Check Electric Vehicle System” warning appeared immediately after I picked up the vehicle that same day. On December 5, 2025, I returned the vehicle to College Park Hyundai with 20,415 miles. They diagnosed a failed main EV drivetrain battery requiring warranty replacement. As of April 5, 2026, my vehicle has been at the dealership for 122 consecutive days with no repair completed, no replacement battery received, and no estimated completion date. Despite repeated follow-ups, I have received no meaningful updates on repair status or battery availability. I have been without my vehicle for four months with no resolution in sight. This extended delay represents a significant safety concern and an unacceptable failure of Hyundai’s warranty obligations.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11729292April 5, 2026
ELECTRICAL SYSTEM, FUEL/PROPULSION SYSTEM
The Integrated Charging Control Unit (ICCU) failed after just 7400 miles on 2-6-2026. The vehicle would not drive faster than 25 miles per hour and had to be towed to the dealership for repair, where it took approximately one month to be returned to me. There was a "Check electric vehicle system" message on the dashboard.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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