2025 Hyundai Ioniq 5 — Known Issues & Recalls

Your car's charging control system failed, causing a loud popping sound from the rear and complete loss of engine power. This left you unable to drive the vehicle. The integrated charging control unit will likely need to be replaced or repaired to restore power and normal operation.

While driving, your car lost electrical power unexpectedly, preventing it from accelerating and leaving you stranded. The power would randomly return and then cut out again. Your dealer identified a faulty ICCU (integrated charging control unit) as the cause.

Your car displayed a 'Check Vehicle Electrical System' warning message, then the engine shut off and wouldn't restart even when you tried jump-starting it. This suggests a serious electrical system failure that prevented the vehicle from running.

Your car's integrated charging control unit (ICCU) failed, causing your vehicle to stop while driving. This is an electrical system component that manages charging functions and its failure left you stranded on the road. The repair will likely require replacement of the ICCU module.

While driving in heavy traffic, your 2025 Ioniq 5 displayed a "Stop Vehicle and Check Power Supply" warning and suddenly lost significant power, forcing you to pull over abruptly in a dangerous situation. The dealership informed you repairs could take up to four months with no loaner vehicle provided, leaving you without transportation. This electrical power loss creates a serious safety concern that needs prompt diagnosis and repair of the vehicle's power supply system.

Your car's integrated charging control unit (ICCU) failed suddenly without any warning lights. When this happens, you hear a loud popping sound, the dashboard lights up, and your car becomes undrivable—leaving you stranded wherever the failure occurs. The dealership has inspected the issue. This will likely require replacement of the ICCU component.

Your car suddenly lost all electrical power after a loud popping sound, leaving you stranded on a busy road. The dealership replaced the Integrated Charging Control Unit (ICCU), fuses, and coolant to restore power. According to the service manager, this is a known issue affecting some vehicles.

Your car displayed a warning telling you not to drive it after you heard a loud popping noise, indicating an electrical system problem. The dealership diagnosed a failed Integrated Charging Controller Unit, which is the component that manages the car's charging system. This happened on a nearly new vehicle with less than 5,000 miles. The repair will likely involve replacing the charging controller unit.

Your car's integrated charging control unit (ICCU) stopped working completely. The dealer had to replace the ICCU with an upgraded version, replace a fuse, and update the vehicle's software to fix the problem.

Your car's electrical system completely lost power while parked, leaving it unable to start. This happened after your daughter had parked the car and gone into a store, with no warning signs beforehand. This is the second time you've experienced this issue — previously the ICCU (Integrated Charge Control Unit) and wiring harness were replaced during a 3-month shop visit, but the problem has recurred. The repair will likely involve diagnosing and replacing faulty electrical components, possibly the battery, ICCU, or wiring harness again.

Your car's Integrated Cluster Control Unit (ICCU) — the computer that controls your dashboard displays and instrument cluster — may fail, causing your gauges or warning lights to malfunction. You might notice your speedometer, fuel gauge, or other dashboard readings stop working or display incorrectly. Repairs will likely involve diagnosing the ICCU and either reprogramming it or replacing the unit entirely.

Your dashboard displayed a "Stop Vehicle and Check Power Supply" warning message while backing out of your driveway. The dealership diagnosed that your Integrated Charging Control Unit (ICCU) needs to be replaced, but the part is on back order with no estimated arrival date. This electrical component controls your vehicle's charging system and will need to be replaced by a technician.

Your car's Integrated Charge Control Unit (ICCU) failed, causing the vehicle to enter a low power mode where it couldn't operate normally. You had to have the car towed to the dealership for repairs. The fix will likely involve replacing or reprogramming the ICCU module.

While parked, you hear a loud popping sound from the trunk area followed by a warning message about the battery management system, and the car becomes unable to start. The 12V battery appears to have failed completely, requiring the Integrated Charging Control Unit (ICCU) and battery to be replaced.

Your car's Integrated Charging Control Unit (ICCU) failed at just 2,138 miles, preventing the 12V battery from charging. This caused the battery to drain completely, leaving your car unable to start or operate any electrical systems, and your vehicle had to be towed to the dealer. The same component has failed in earlier Ioniq 5 models under existing recalls, but your 2025 model isn't currently covered by those recalls. Replacing the ICCU with a new unit from the dealer would be needed to restore charging function.

Your car experienced a sudden loud pop while driving, followed by a "Check Electrical System" warning and a dramatic loss of power that forced you to limp home at 20 mph on a busy highway. Hyundai confirmed that the ICCU (Integrated Charge Control Unit) and its fuse failed, and they're investigating whether the hybrid battery is also involved. The repair will likely require replacement of the ICCU, fuse, and possibly the hybrid battery module.

Your car's ICCU (Integrated Cluster Control Unit) short-circuited while you were driving, causing the engine to enter "limp mode" with a sudden pop noise and significant slowdown. This created a dangerous situation where another vehicle could have hit you from behind. Although this part has been recalled for earlier model years, your 2025 model year isn't included in that recall, and replacement parts are currently backordered with no immediate solution available.

Your car's Integrated Charging Control Unit (ICCU) — the component that manages charging and power conversion — failed completely at fewer than 3,000 miles, leaving your vehicle unable to drive or charge. Warning lights appeared on your dashboard before the total loss of power. The dealership and Hyundai confirmed this is a defect that cannot be repaired. Fixing this issue will require replacing the Integrated Charging Control Unit.

Your car's integrated control unit (ICCU) failed without warning while you were driving on a busy road, causing sudden power loss and multiple electrical system warning lights. Your vehicle slowed dramatically from normal speed to 10 MPH over about 30 seconds, then shut off completely in a parking lot. This loss of power while surrounded by faster traffic created a dangerous situation that could have been much worse on a highway.

Your car's dashboard displayed an electrical warning, and the vehicle wouldn't start. This appears to be an electrical system issue that may have prevented the engine from cranking. The problem may require diagnosis of the battery, electrical connections, or starting system components.