2022 HYUNDAI IONIQ 5 Complaints

ICCU failure ICCU fuse popped, vehicle went into low power mode I was able to get it off the road into the county transfer station. I got it towed to a local auto shop as Hyundai roadside wasn't accepting tows due to weather. Hyundai towed the car to the dealership the next day.

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.

ICCU failed at ~27,000 miles. Loud pop came from the under the vehicle. Afterwards, car could only accelerate to 35 mph. Dashboard error message told driver there was an electrical issue and advised us to pull over. Car had to be towed. Currently at the dealer awaiting a replacement. Dealership said it could take "weeks or months" to get a replacement part. Sudden loss of propulsion is a safety risk to other drivers. We were on the highway and could not get to speed. ICCU malfunctions appear to be very common with Hyundai EVs. Hyundai appears to be aware that this is a problem but doesn't seem very interested in solving it.

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.

There was a failure of the Integrated Charging Control Unit (ICCU) on my Hyundai Ioniq 5. We were driving home from the beach, approximately 1 mile away. When I turned the car on and started driving home, the dashboard lit up with an error and the vehicle turned on the "turtle" mode, which limited my speed. I managed to make it into my subdivision where it finally died and I was unable to get it into garage. Vehicle would not turn on, would start up momentarily, lots of errors, screen would flash, and then nothing. Very scarily, the wheels would not park and remained in neutral. This made it easy to load onto a tow truck, but scary that it could only be stopped on a flat surface. Mine and my wife's safety was at risk, as we were nearly stranded on the side of the road, I hate to imagine if this happened on a highway. The dealer confirmed our ICCU blew and we had our car back about 2 weeks later. The dealer inspected and replaced the component under warranty. This ICCU issue must be fixed by Hyundai, or at least extend the warranty. This is unacceptable.

I was on the freeway and went into limp mode and almost got into a traffic accident. My ICCU unit failed after two recalls on it.