Unknown. It just happened in November and i called Hyundai but they didn't want to fix it. I haven't been able to use my car properly since then.
2022 Hyundai Ioniq 5 electrical complaints
Page 2 of 11: complaints 11 to 40 of 307, newest first, as owners wrote them.
ICCU failure. I received a message that said "Check electric vehicle system." Then seconds later another message that said "Stop vehicle and check power supply." Vehicle became nonfunctional (with my [XXX] daughter in the car) and had to have it towed to the nearest Hyundai dealership. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
The battery is charged but will not start. It says pull over safely before it goes completely dead.i can jump the battery but it does not continue after being turned off. Slow and hard turning.
I tried to start car and it started but would not go into drive. A message saying "12v battery voltage low. Stop safely." Was on the screen. I turned the car off and back on and was able to drive home. Once home I tried to charge the car but it would not charge. However I left it plugged in and came back several hours later and the car had charged some. I started the car and the messages did not appear. The next day i went to drive the car and the car was totally dead. The auto key would not unlock the car. Thank goodness , I was not driving when the battery died. I took it to the dealer. This is the 2nd 12v battery I have had to replace in 4 years. The first replacement was covered under warranty. I asked them to try to identify the root cause of the 12v batteries dying so quickly and they claim it is only the 12v battery. I feel unsafe driving the car now knowing it could happen at any moment again, maybe while driving. I think the problem is related to the ICCU as my symptoms are very similar to other people with ICCU issues.
While the vehicle was parked in a garage and charging overnight, I briefly went to the vehicle to retrieve an item from the back seat. I was barefoot at the time. I opened the driver‑side rear door and reached inside with my right hand while my left hand was near the upper door area where the door seal is located. When my left hand grazed the door frame, it felt unusually sharp. When I touched the area again to determine what was sharp, I received a significant electric shock. There were no warning lights, messages, or prior symptoms before the incident. The presence of electrical current on an exterior door surface poses a safety risk during normal vehicle use.
2022 Ioniq 5 SE. ICCU failed April 2026 with around 29325 miles. Original owner. Purchased June 2022. I had the original Recall 272 software update performed back in February 2025, but the hardware still failed a year later. **Timeline of Failure:** 1. **Phase 1 (The Trigger):** Level 2 charging stopped unexpectedly before reaching the limit. It tripped my house breaker and unfortunately killed my Level 2 EVSE (Grizzl-E) with a stuck relay. Didn't think too much of it because I had to be somewhere. Car started up normally and I was able to drive throughout the day with no problems. 2. **Phase 2 (The Warning):** The next day, I attempted Level 1 charging. It immediately tripped the breaker. I tried another outlet on a different breaker; the breaker didn't trip, but the car failed to initiate a charge after three attempts. 3. **Phase 3 (Dashboard Error):** After third failed attempt with the L1, I took a peek inside and saw the dashboard had a yellow triangle. With the charger still plugged in, I sat in the driver's seat and turned the car on. The **"Check EV System"** error appeared. I turned off the car and went inside to call the dealer. I called the dealer and they said I can have it towed there. They also scheduled an appointment for the next morning. I went back to car to attempt to position the car to make it easier for the tow truck, but the check ev error was not there when I turned on the car. It said ready and I was able to drive around the block a few times so I figured I'll just try to drive to the dealer. I drove the car to the dealer the next morning. It took **one week** to get my car back. **Diagnostics & Parts Replaced:** The dealer confirmed the following codes and performed a full hardware replacement: * **DTC P1E1300:** AC Power Module Failure * **DTC P1A9096:** DC/DC Converter Fault * **ICCU Part:** `36400-1XAA0-AQQH` * **HV Fuse:** `375F2-GI040-QQH` * **Coolant:** Install of Pink Antifreeze (`00232-19098`)
The ICCU unit went out rendering the car inoperable
The car lost power while driving and an electrical warning was displayed on the screen. The issue was later diagnosed as a failure of the ICCU and blown fuse that had been previously recalled and replaced. Now it needs to be replaced again.
Finished charge, low battery indicator on the dashboard. started to drive, within mile "pull over immediatedly" well documented and continued flaw with vechile ICCU component (that I had the software "patches" applied). Car will no longer accept charge (so now has the remaining charge before being a 3 ton brick) and cannot not be driven as if the 12v battery loses charge (which it will) I will lose powersteering and brakes.
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 federal safety agency 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.
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.
Upon starting the car, it made an audible "pop", and the dash indicated to check the 12V power supply and "low available power" with a turtle indicator, and an "EV!" warning lamp. The car struggled to accelerate out of the parking lot, and within a minute, the dash displayed a "power failure" message, and the car lost all ability to accelerate while on the road, forcing an emergency pull-over. The 12V system completely failed while waiting for a tow truck, complicating the already poorly-documented and complicated process of disengaging the vehicle's automatic parking break for loading onto the flatbed trailer. The dealership performed diagnostics and confirmed an ICCU failure. After waiting for parts and technician availability, the ICCU was replaced with part number 36400-1XAA0-AQQH "ICCU Assy" and returned to me 32 days later.
I am filing this complaint regarding Hyundai Motor America's failure to complete a vehicle repair in a timely manner on my 2022 Hyundai Ioniq 5 (VIN: [XXX] ), which has been at Hyundai of Leander, an authorized Hyundai service center in Leander, Texas, since September 2025 — more than six months — awaiting a replacement high-voltage battery. (Case No. XXX) I purchased this vehicle in September 2025 from Apple Sport Imports in [XXX] . The vehicle was sent immediately to Hyundai of Leander for an open repair and I never took full delivery. I was informed the replacement battery was initially allocated to a different dealership and a new order could not be placed until approximately January 2026. As of March 2026, Hyundai's own case manager confirmed in writing on March 30, 2026 only that they are working to determine the battery's arrival date with no confirmed completion date provided. Since November 2025, I have made 5 monthly payments of $513.92 totaling $2,569.60 on a vehicle I have never driven, with a sixth payment of $513.92 due in April 2026. I am also flagging a potential records discrepancy for the federal safety agency's awareness. When I checked my VIN on Hyundai's recall lookup website, Recall 272 — covering an ICCU software update, fuse replacement, and ICCU replacement on 2022-2024 MY IONIQ 5 vehicles — is listed as a Closed Campaign with a completion date of October 24, 2025. My vehicle was physically at Hyundai of Leander awaiting parts on that date and remains there today. I do not know whether this recall is related to the current open repair, but I am flagging the potential discrepancy for investigation. When I raised this with Hyundai of Leander's service department, I received no clear explanation. I am requesting that the federal safety agency investigate Hyundai Motor America's recall fulfillment practices and the accuracy of their recall completion records for this vehicle. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
On January 19, 2026, the vehicle lost power while driving and required a tow to the local dealership. After inspection, the dealership determined that the ICCU was at fault and needed to be replaced. The ICCU part was backordered. The vehicle was inoperable for 6 weeks as we waited for the part to be available and installed.
ICCU failure occurred while vehicle was operating at 30 MPH, after being charged the night prior and unplugged in the morning at 100% capacity. A sudden pop was heard, and the vehicle indicated that an electrical fault would require the vehicle to be shut down as soon as safely possible. The vehicle went into limp mode and would not exceed 25 MPH.
Car gave a "electrical error" message and would no longer charge at any charger. It slowly lost power and eventually stopped driving fully on the highway. The dealer says the ICCU is responsible. I inquired if this recall was not fixed already, they said it was but can still happen and the ICCU is not resolved truly, the software is just a temporary fix according to them. The vehicle will need a new ICCU.
ICCU failure
My ioniq 5 EV experienced an integrated charge control unit (ICCU) failure. A couple days prior to complete failure, we were unable to charge the vehicle using either level 1 or level 2 chargers. Our local Hyundai service center advised us that it was likely an ICCU failure and was unsafe to drive, due to the possibility of sudden loss of drivetrain power. The vehicle was towed to our local service center (CardinaleWay Hyundai El Monte in El Monte, California) and the ICCU completely failed after arriving at the service center. The vehicle is still at the service center and we have been advised that there is a nationwide shortage on replacement parts, with backorders of weeks to months.
The ICCU has failed for the 2nd time in a year requiring lengthy repairs. The car cannot be driven with a faulty ICCU. The ICCU is responsible for converting AC power to DC for and stepping it up to 800 volts to charge the primary battery. It is also responsible for keeping the secondary 12 volt battery charged.
Car lost propulsion in the middle of the road and would drive over 20 MPH. ICCU failure, which nearly caused me to get into an accident.
Iccu failure cause vehicle to lose power in the middle of the interstate, Hyundai has no solution for the ongoing problem
The ICCU unit failed, making this electric vehicle unchargeable and therefore undriveable. This is the second time this has happened on this vehicle and the wait for the part was 8 plus weeks. This is a nationwide issue.
While driving my IONIQ 5 it flashed a power limited warning, went into turtle mode, and then experienced a total loss of power. The 12V battery was dead.
The car would no longer charge and the dealer said it is due to a faulty ICCU. The dealer said this part is on back order with an indefinite freeze and no ETA. My car has been at the dealership shop since January 29 and Hyundai corporate has not been helpful when I escalated to them. Overall I have had these charging issues since early December. Hyundai has denied my request to buyback the vehicle since it is over 4 years old now (2022). I’m very disappointed and concerned about the ongoing ability for this vehicle to be safe and drivable.
The ICCU failed. The car is at the dealership, availability of the failed part is unknown. The vehicle was no longer able to charge the battery. This could have happened while driving. The dealership has confirmed failure and will replace when a new part is available. Unknown if part has been inspected by others. Hyundai case has been opened. There was no warning. Indication of problem was breaker tripping at charging.
For the past few days, our 2022 Hyundai Ioniq 5 (approx. 83,000 miles) has been unable to charge using AC charging (Level 1 or Level 2). The failure is repeatable and consistent across multiple chargers: two separate home Level 2 chargers, the Hyundai-provided Level 1 charger, and a neighbor’s Level 2 charger. In each case, charging either fails to start or stops shortly after initiating. DC fast charging continues to work normally. Component/system suspected: The problem appears related to the vehicle’s onboard AC charging system (possible ICCU, onboard charger/OBC, charge port/inlet, or related high-voltage charging components). The vehicle and components are available for inspection upon request. Safety risk: This creates a safety concern because we cannot reliably charge the vehicle at home or at most public charging locations (which are predominantly Level 2 AC). This increases the risk of unexpectedly running out of charge and becoming stranded in unsafe locations, especially where DC fast chargers are not available. Reproduction/confirmation: The issue has been reproduced on multiple independent AC chargers, making it unlikely to be caused by a single EVSE/charger. A dealer appointment is scheduled for diagnosis and confirmation. Warning lamps/messages: When attempting AC charging, the vehicle reports a charging failure/unsuccessful charging condition (exact message UNKNOWN). No prior warning lamps were noticed before the issue began (UNKNOWN). This issue appears to be widespread based on numerous similar owner reports of AC charging failure on Ioniq 5 vehicles while DC fast charging still works, suggesting a potential systemic defect in the onboard charging/ICCU-related hardware.
Multiple 12v batteries died within one year of installation; ICCU finally failed at about 3.5 years of ownership. Towed to dealer on January 16, 2026, still no repair as of February 24, 2026.
The contact owns a 2022 Hyundai Ioniq 5. The contact stated that while driving at an undisclosed speed, the message “Check Electrical System Immediately” was displayed. The contact stated that the failure had occurred while the contact's minor children were inside the vehicle. The vehicle was driven to the residence. The vehicle was later towed to the dealer, where it was diagnosed with a failed ICCU and fuse. The contact was informed that the ICCU and fuse needed to be replaced. The vehicle was not repaired. The contact was informed that the parts for the repair were on back order. In addition, the contact stated that the vehicle was repaired under the federal safety agency Campaign Number: 24V868000 (Electrical System); in February 2025. The contact stated that only the software update was performed. In addition, the contact stated that the failure was a known failure with the vehicle. The manufacturer was made aware of the failure, and a case was filed. The contact was informed that the vehicle was no longer covered under warranty. The failure mileage was approximately 120,000.
ICCU failed second time wednesday february 18, 2026. First ICCU failed November 2024 and replaced under warranty. The car went in turtle mode.....20 mph or less. Limped along safely on side of roadway and used sideroads. The dealer says the ICCU and fuse need to be replaced. The dealer wants me to pay for this part, third time is a charm? I don't think I could ever trust this part again. They want to give me the exact same part they gave me when the ICCU failed b4. There were 2 messages: stop vehicle and check power supply ......check electric vehicle system. They were timely and made this failure a bit safer. The dealer inspected the vehicle but not the manufacturer or anyone else. The car is at Balise Hyundai Fairfield CT I BELIEVE 10% OF THESE ICCUs ARE DEFECTIVE.
My 2022 Ioniq5 left me stranded late at night in a freezing rainstorm in March of 2024 when I was 75 miles from home at it failed to charge both D/C fast charging and A/C level 2 charging, despite my trying several different chargers. The car gave me the dreaded "Check E/V System" warning when it failed to charge. It turned out to be the notorious ICCU but also the AC inverter, which had to be replaced. It took 12 days. The dealership's initial diagnosis was something draining the 12-volt battery, so I asked if they also replaced that. They said no because it had tested fine, but 9 days after I picked up the car, it did not start because it turned out the 12-volt battery was dead, and my dealership spent 2 days getting Hyundai to approve replacement of the 12-vold under warranty. Last month, 17 January 2026, my Ioniq5 again left me stranded. This time 120 miles from home in a snowstorm. It D/C charged for 10 minutes before the charging stopped and it gave me the dreaded “Check E/V System” warning. I tried two nearby Tesla Superchargers with my Hyundai issued adapter, and they both failed. I had just enough charge to make it to a dealership 110 miles from my home, where the vehicle stayed for nearly a month while they diagnosed and repaired it by replacing the AC inverter (note that had been replaced the last time) and also the AC compressor. The ICCU failures are well-known and well-documented, but the AC inverters that failed on me twice do not seem to be as common and should probably be investigated. In both cases I was stranded on Saturdays when no dealership service departments were open until the following Monday, so I had to pay for a motel overnight, which Hyundai refused to reimburse because I was not at least 150 miles from home.
VIN decoder
See the problems and recalls for an exact car
Buying a used 2022 Hyundai Ioniq 5?
Check the exact car before you pay: accidents, salvage or flood titles, odometer readings and previous owners.
Check its history