2025 HYUNDAI IONIQ 5 Complaints

The high-voltage traction battery on my 2025 Hyundai Ioniq 5 Limited RWD failed unexpectedly around [XXX], when the vehicle had approximately 1,250 miles on it and was just over 3 months old. The car had been parked in my driveway with about 80% charge while I was away for several days. When I attempted to drive it, the vehicle would not shift out of neutral. No warning lamps or error messages were displayed before the failure. The vehicle was towed to Van Hyundai in Carrollton, TX on April 3. While loading it onto the tow truck, the 12V battery completely died, disabling the electronic parking brake and preventing the vehicle from being safely secured. After an extended wait, a Hyundai field service technician diagnosed the failure as a fault in the traction battery, requiring a complete replacement. I was told the part is currently unavailable and has no estimated arrival time. The issue has been confirmed and documented by the dealer and the field technician. This failure renders the vehicle undriveable and puts both safety and financial reliability at risk. Not only was I unable to move or secure the vehicle, but it has also been out of service for over two months with no resolution in sight. The failed component is currently in possession of the dealership and should be available for inspection upon request. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

I purchased this car this week. The vehicle is equipped with a safety feature called Forward Attention Warning (FAW). Its purpose is to monitor the drivers attention (eyes??) and trigger an alert when the drivers attention is distracted for a period of time. I took it for the first time on a 150 mile trip. During the trip, the FAW alarm was triggered constantly. I tried changing my head position, taking my glasses on/off, changing my hands holding the wheel, etc. Nothing seemed to matter. It is not only a nuisance, but it causes other automated functions to be disabled. I was able to partially turn it off, but it still caused misfunctioning of other auto driving functions. Its not just a nuisance, its a hazard. If it cant be fixed easily, Hyundai should at least give the operator the ability to completely disable it.

This car has a system called Forward Attention Warning (FAW) which monitors the driver's eyes using an in-cabin infra-red camera trained on the driver. When smart cruise control and lane following assist are both activated, FAW is forced ON by the car. If FAW thinks that the driver's eyes aren't on the road, it beeps, puts alerts on the panel visible to the driver and turns off all driving assist features. The problem I'm reporting is that the FAW system is completely broken. Even though I'm looking straight forward, it says I'm not paying attention to the road, sounds loud alerts, then eventually shuts off all of my driving assistance features. I wear glasses, and sometimes sunglasses to reduce glare when driving in bright conditions, and I've tried this with my prescription sunglasses, my normal prescription glasses and even without any glasses. The system erroneously triggers in all cases. I believe that the FAW system false positives is a safety issue because: 1. The constant false alerts are very distracting, making the driver look at the panel in front of them to try to figure out what it's saying, taking their eyes off the road 2. Lane following assist is, itself, a safety feature, by disabling it due to these false positives from the FAW system, this is reducing safety in the vehicle 3. The FAW false positives will abruptly disable the smart cruise control, which is controlling the speed of the car, as well as the lane following assist, helping to keep the car in the lane. This abrupt disabling of these systems can cause the car to slow suddenly and depart from the lane if going around a curve. This can be very dangerous.

I purchased this vehicle on [XXX] in the state of Colorado and had to drive it home through a winter storm to California. While driving home the vehicle on multiple occasion the vehicle flagged driver assist disabled or inoperable errors due to "radar blocked" stopping and checking the front of the vehicle I found that the car had no snow or ice build up on the exterior of the bumper, and there was no reason that all the driver assist and even safety features like Automatic Emergency Braking had been disabled. In addition while making this drive home, the vehicle passenger side wiper failed catastrophically. Over a 30 day process the local dealer replaced the broken wiper blade motor, and determined there was nothing wrong with the internal Auto assist system, even stating there were no DTC/ or error codes present. I provided them with images of the errors and millage, but nothing further could be done because they could not "replicate the issue" and no codes are being stored. At around 1430 miles I was driving in dry, warmer weather (around 50 degrees) when another error flashed on my screen again. I brought the vehicle back to the dealership for diagnostics, where they have yet to determine the issue again. They've stated no DTC or error codes are present, and they can not reproduce the issue so the vehicle is operating "normally and designed". I have been working with Hyundai Consumer Affairs during this entire time to help speed this process along, they have no answer other than, if the error appears again, do not turn of the vehicle, drop everything your doing in your life and bring it directly to the dealership for diagnostics (even if its active safety features are not working while your driving it). INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The contact owns a 2025 Hyundai Ioniq 5 N. The contact stated that while driving and exceeding 30 MPH on several occasions, the accelerator pedal was released; however, the vehicle accelerated unintendedly for three seconds. Additionally, the contact stated that upon depressing the brake pedal, the vehicle responded as intended after three seconds. The vehicle was taken to an unknown dealer, where it was diagnosed and determined that the ABS module had failed, and a software update was needed. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 9,200.

The Forward Attention Warning system in the refreshed 2025 Ioniq 5 gives constant false positives for both my wife and myself when we are driving the car. With Hyundai's HDA and lane keep active, the system keeps chiming, claiming that the driver is not looking at the road when we are. In fact, the calibration is so poor that it is a safety issue. The constant random warnings are very distracting, and sometimes the system does not recapture your eyes before timing out and hard braking the car on the highway. This is really unacceptable and a safety issue that I'm surprised Hyundai thought it could release. Lots of evidence of other owners with this problem on the Internet: [XXX] [XXX] and many others. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

After recent software update on 17 March 2025, the vehicle demonstrated unpredictable high acceleration. Vehicle is unsafe in E-shift mode. Vehicle can only be driven safely in automatic mode. Per a Hyundai communication: "there have been complications reported related to the Vehicle Control Unit (VCU) software that may cause momentary continued acceleration during the release of the accelerator pedal while the vehicle’s N e-shift feature is engaged, increasing the risk of a crash. Our records indicate that your vehicle, VIN [XXX] , has had this software update installed as the remedy for recall 275. Hyundai is currently investigating the root cause of this complication and will provide an update when available. In the meantime, Hyundai recommends all owners who previously received remedy repair for recall 275 NOT TO USE the N e-SHIFT Feature." INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The dealership performed the software update from the Hyundai recall 275. After the update, when using the e-shift feature in N mode the car sometimes will accelerate out of control on its own without the accelerator pedal being engaged. Hyundai also changed the motor sounds and e-shift feel.

These cars still have problems keeping the 12v charged. Car was leased on Jan 19. 12v first died on Feb 15, took it to dealer where they trickle charged it. 12v died again on Feb 18, dealer replaced the 12v. The 12v died again on Mar 11 and is still at dealer service center. Case with Hyundai corporate was opened and the dealer is going back and forth with them. When car is left alone for 5 days, the 12v appears as needing a replacement, so there is something wrong with the system that keeps the 12v charged or there is some parasitic drain somewhere that is hard for the Hyundai engineers to diagnose.

With Eshift enabled, the car continues accelerating under heavy throttle even after releasing the accelerator pedal.