2024 HYUNDAI IONIQ 5 Complaints

I was driving on a highway during traffic on June 17 2025 and my ioniq 5 car started to make weird sound. Then after a minute, it abruptly started to push back and forth and the noise became stronger. A couple of minutes later, the "Check electrical vehicle system" sign was displayed on the screen. I pulled over due to the scare and turned off the car. A minute later, turned ON the car and drove. Same exact thing happened a day before too. This has not happened before since I got the car in Dec 2024. Car's battery was at 82%.

While backing into my driveway if a car passes in front on the street my car will not continue backing up. This also happens in parking lots. While backing out of my driveway onto the street and staying in the lane closest to the driveway, traffic in the far lane will cause the car to stop moving even though the street is more than wide enough to accommodate both cars without crossing the double yellow lines. As I live on a busy street this can cause an accident. In both cases turning off the parkin sensors with the dashboard button has no effect.

Got a “check electrical system” alert and then a “stop vehicle and check power supply” and “12V battery voltage low. Stop safely” before my car completely turned off. This started on May 30 and June 2nd 2025. Car was towed to the dealer and pending diagnostics.

Vehicle lost power on a two lane highway with a 55mph speed limit, which increased the risk of an accident. Warning lights appeared after the failure occurred; essentially giving the driver little to no warning. The vehicle kept slowing down to 30-25 mph, but fortunately close enough to home and was able to slowly roll into the garage. The vehicle was towed to the dealership and will take 2 months for the ICCU and ICCU fuse to be replaced due to backordered parts. This occurred after an ICCU update was done in 12/24.

ICCU (Intergrated Charging Control Unit) failed after two mandatory recalls were completed. Vehicle is not drivable as it’s awaiting for a replacement ICCU (backordered). Replacement ICCU will not remedy the issue since it has not been improved upon from the original failure. Vehicle shutdown on a two lane highway with a 65mph speed limit. The section where the vehicle shutdown was without cellular service and on a bend with no shoulder, which increased the risk of an accident. The problem was reproduced in other vehicles using the same part. The component has been inspected by the manufacturer and dealer with a temporary remedy of replacement. Warning lights appeared after the failure occurred; essentially giving the driver no warning or time to react. The vehicle displayed a warning message to pull over and turn off vehicle immediately. Power was reduced to 15mph for about 15-20 minutes.

On Monday May 12, 2025, while driving my Ioniq5 (2024) several warnings appeared concerning the EV electrical system. One warning dealt with 12 volt battery issue and other warning alerted the entire vehicle's electrical system was failing with instruction to stop driving vehicle immediately. I was out of town and my car was towed to local hyundai dealership. The problem appears to be a faulty ICCU component and parts have been ordered. Having my brand new EV turn off in traffic is scary and this experience has been frustrating and nerve wrecking. Knowing Hyundai was aware of this problem makes it even worse.

ECCU failure unexpectedly failed while driving . Failure occurred on busy road, car went from being able to drive to suddenly complete stop from the vehicle with no warning. Car was not able to restart after failure. Dealership confirmed ECCU failure

While driving the car on the highway at about 50 mph, the driver side door unlatched and opened.

The Integrated Charging Control Unit failed while driving. The car went into limp mode and would not drive over 25 mph. The dealership confirmed the issue and the parts are on backorder for an undetermined amount of time.

On [XXX], I was in New Jersey waiting for my mother to finish shopping. In an effort to preserve battery life, I turned off the engine while waiting. Upon her return, I placed my foot on the brake pedal and started the car. As soon as I shifted the gear into "Drive," the vehicle made an unusual sound and began to roll forward. At no point did I remove my foot from the brake pedal, and I immediately applied more pressure. However, the brakes did not respond. Panicked by the fact that a parked car was directly in front of me, I quickly shifted the gear into "Park" to engage the emergency brake. Fortunately, this action brought the vehicle to a stop, and no damage occurred. I turned the vehicle off and restarted it after which the brakes functioned properly. The experience was extremely alarming. This is not the first time I have experienced this issue. On [XXX], a similar incident occurred while I was stopped at a red light. At that time, I assumed I may not have applied sufficient pressure to the brake pedal. The car rolled forward and made contact with the vehicle in front of me, resulting in a minor accident and a cracked front headlight. Given that this has now happened twice, I am concerned about the possibility of a recurring brake system failure and am worried for my safety and the safety of others. - Brake Failure, it is available for inspection upon request - if I didn’t act quickly and pressed the emergency brake, it would have resulted in an accident. Damage to my car and damage to the car In front of me. And could have resulted in injury to myself. -I have not taken the vehicle to the dealership or service center yet as I have not driven it since the incident. However, I have scheduled an appointment for this upcoming weekend. -there were no warning lamps messages or other symptoms prior to the failure. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)