2024 Hyundai Ioniq 6 Problems

1. The HORN suddenly stops working. This happened 3x in a 6 month span. The first time the horn wouldn't work all day. However, next day it did. Second time it didn't work for 3 days. Last time it stopped working completely just before Memorial Day weekend. I have read it is a known issue in Hyundai Ioniq 6 forums. 2. Forward Collision Warning is to Invasive. Once it even stopped on the freeway while trying to merge in a difficult interchange. 2 cars almost hit me from behind when my car suddenly stopped. I was however in complete control of the situation. 3. Rear Backup camera stops to much when person is 8 feet past my car. It just suddenly STOPS even when person is walking away from the car. Snaps my neck too. Also, stops at night after rain. I believe it sees a reflection and thinks it is a hazard.

I experienced a safety critical failure in my 2024 Hyundai Ionic 6. While attempting to start the vehicle, the car displayed a red 12 Volt battery warning light, a battery discharge warning, and then refused to enter ready mode. The vehicle would only shift into neutral and was completely undrivable. After sitting for many hours, the vehicle started again, which is consistent with an intermittent ICCU/DC-DC converter dropout. This type of failure is known to cause loss of power and has been documented in NHTSA investigation PE23-011 for other Hyundai EV's. The dealership states they cannot replicate the issue and refuses further diagnostics. Hyundai corporate is deferring entirely to the dealership and will not authorize a loaner or confirm reimbursement, leaving me without transportation. They also stated they cannot commit to any repair unless the failure happens again despite the clear safety implications. This failure mode can cause sudden loss of motive power, which poses a serious risk if it occurs at highway speeds. I am reporting this because the vehicle is unsafe to operate, the failure was severe, and Hyundai is refusing to investigate the root cause unless it reoccurs. I am requesting NHTSA review this incident as part of the ongoing concerns regarding ICCU/DC-DC failures in Hyundai E-GMP vehicles.

1. The HORN suddenly stops working. This happened 3x in a 6 month span. The first time the horn wouldn't work all day. However, next day it did. Second time it didn't work for 3 days. Last time it stopped working completely just before Memorial Day weekend. I have read it is a known issue in Hyundai Ioniq 6 forums. 2. Forward Collision Warning is to Invasive. Once it even stopped on the freeway while trying to merge in a difficult interchange. 2 cars almost hit me from behind when my car suddenly stopped. I was however in complete control of the situation. 3. Rear Backup camera stops to much when person is 8 feet past my car. It just suddenly STOPS even when person is walking away from the car. Snaps my neck too. Also, stops at night after rain. I believe it sees a reflection and thinks it is a hazard.

I was parking my car a Hyundai Ioniq 6, in an easy parking space when I briefly removed my foot, which was lightly depressed on the gas pedal to hit the brake pedal, the car suddenly accelerated jumped the curb hit another car and hit a tree. The airbag did not deploy I am uninjured. The other car was parked, but was damaged. My car was damaged. It all happened in about two or three seconds and my foot was no longer on the gas pedal. Moreover, the automated systems for parking collision warning, and for automatic stopping did not work. This is what came up when I googled it. Reports suggest some Hyundai Ioniq models, including potential Ioniq 6 instances, may exhibit unexpected, brief acceleration following a software update meant to address a separate braking recall. This issue is often linked to the "N-shift" mode, where the car may accelerate for 2-3 seconds after the driver lifts their foot.  I had that software update

I was driving on the highway, 65mph when I had a sudden loss of power, check electrical system warning and a battery picture came on. I was reduced to approx 10mph suddenly in rush hour traffic, in the left lane, with no shoulder to pull over to. I was able, with the kindness of other drivers slowing down, able to move to the right lane, then to the shoulder. Called AAA for tow to dealership. 12v battery and ICCU damage.

ICCU failed. The car suddenly decelerated from 40mph to 25mph or less with no warning. The ICCU is confirmed to be an issue for Hyundai. I had the software update to fix the problem in 2025. It is currently at the dealership in Fort Mill, SC. DTC error code shows it as an ICCU failure. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? There were no warning lamps to until the failure occurred.

ICCU failed. The car suddenly decelerated from 40mph to 25mph or less with no warning. The ICCU is confirmed to be an issue for Hyundai. I had the software update to fix the problem in 2025. It is currently at the dealership in Fort Mill, SC. DTC error code shows it as an ICCU failure. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? There were no warning lamps to until the failure occurred.

Driving 65 on the highway, the ICCU popped and died and the car immediately went into slow mode and decreased to 20mph in traffic in the snow. It displayed a message to pull over immediately and check the power system.

I was parking my car a Hyundai Ioniq 6, in an easy parking space when I briefly removed my foot, which was lightly depressed on the gas pedal to hit the brake pedal, the car suddenly accelerated jumped the curb hit another car and hit a tree. The airbag did not deploy I am uninjured. The other car was parked, but was damaged. My car was damaged. It all happened in about two or three seconds and my foot was no longer on the gas pedal. Moreover, the automated systems for parking collision warning, and for automatic stopping did not work. This is what came up when I googled it. Reports suggest some Hyundai Ioniq models, including potential Ioniq 6 instances, may exhibit unexpected, brief acceleration following a software update meant to address a separate braking recall. This issue is often linked to the "N-shift" mode, where the car may accelerate for 2-3 seconds after the driver lifts their foot.  I had that software update

The power system failure warning came on as I was driving up on an intersection. WhenI released the accelerator because I was in i-pedal mode (one pedal driving), the cars braking system did not activate. Consequently, I ran the red light. The car power was reduced, and I was able to pull into the parking lot of a strip mall as a police vehicle pulled behind me. After explaining our situation and receiving my traffic ticket, the officer asked me to move the car out of the driveway, but I was unable to shift the car into drive given the power warnings that were flashing on the display. The officer asked if I needed a tow and I let him know I would use the brand’s Roadside Assistance for my vehicle. I turned the car off and the officer left. I waited about 10 minutes and I tried turning on the car again and was able to shift into drive and get out of the driveway and into a parking space. However, the car operated in low power mode and could only travel about 3 miles an hour. The tow truck driver had to jump the 12 V battery which was completely depleted in order to turn on the vehicle to move it. At Hyundai Service center, the car turned off abruptly as he was trying to move it into a parking spot. Despite supposedly having been addressed in a recall, the failure of the vehicle’s power system due to the ICCU put me in my family at risk while actively driving on a road with traffic.

Vehicle steering wheel was off-center and the vehicle wandered whenever the road changed camber or had rough sections. The vehicle was purchased used from Carvana,. I took it in for 4-wheel alignment and the tech reported that "All adjustment hardware at rear were pretty loose", and stated that it probably left the factory this way as he saw no evidence of prior adjustments. The left rear tire is badly worn on the outside and he recommended immediate replacement, which is awaiting warranty claim processing. Possible safety issues: Rear tire blowout, rear suspension alignment failure with loss of control.

Driving on middle lane of fast freeway with kids in the car. The car began beeping lights of an electric malfunction, a 12v battery malfunction, an ICCU malfunction and then started to slow down all the way to 3 miles per hour and then it stopped in the middle of the freeway. A car behind us almost crashed into us and would have killed us. I feel very u safe and Hyundai will not do anything about it. It’s a one year old lease of a 2024 EV with barely 10k miles on it. They are not fixing in time and it also shows a recall that they didn’t accommodate or were able to schedule.

The contact owns a 2024 Hyundai Ioniq 6. The contact stated that while driving 30-40 MPH on a sunny day, the vehicle abruptly stopped while passing a shadow. There were no warning lights illuminated. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 800. The VIN was not available.

To date, our experience driving the 2024 Hyundai Ioniq 6 has been a total "NIGHTMARE." We've had 2 "TERRIFYING ACCIDENTS" within the first 6 months of leasing this vehicle, Both caused by "Unintended Acceleration Issues," the car "randomly" accelerates, on it's own! 1st ACCIDENT (4/25/2024) - As my wife pulls into our driveway, the car suddenly accelerates (un-commanded) and smashes in the garage, the damage was over $8,000 dollars, (we paid out of pocket) ... Thank God, she was not HURT! State Farm Insurance paid over $20K to repair the car, we paid $500 deductible. It took over 10 weeks to complete all repairs. After we got the car back, my wife was "very apprehensive" to drive for two weeks, finally, able to summon enough courage, she got back behind the wheel and then came the 2nd ACCIDENT( 8/25/24) - While pulling into a Jamba Juice parking spot, the car did it "AGAIN," (unintended acceleration), Jumping the curb, plowing into greenery, shrubs and block wall. Again, 'EXTREMELY" fortunate no one was hurt of "KILLED!" The car was towed to SLO Hyundai Dealership, then back to Kaisen Collision Center, for 2nd time, all within 6 weeks! The repair completion date, is estimated for 9/13/24 with approximate cost at $13K dollars, to date. "REGARDLESS" of all that, we feel blessed to be "WALKING AWAY," from the vehicle, (literally & figuratively)! We are "DONE" ... the car is a total "DEATH TRAP." Immediately following ACCIDENT #2, we called SLO Dealership to report (2nd accident), stating, we are "FINISHED" with the car & "REFUSE" to drive it again! SLO Dealership was apologetic and stated they could "VOID OUT" Lease Agreement, "ONLY" if we paid dealership, roughly $8K dollars (Citing: "Car Depreciation," after "YOUR" Two Accidents - CarFax report). Now, this where the rubber meets the road, we vehemently refrut dealerships allocation, we take total culpability, paying them an extra $8K to return this (heavily documented), "FLAWED" vehicle.

Vehicle steering wheel was off-center and the vehicle wandered whenever the road changed camber or had rough sections. The vehicle was purchased used from Carvana,. I took it in for 4-wheel alignment and the tech reported that "All adjustment hardware at rear were pretty loose", and stated that it probably left the factory this way as he saw no evidence of prior adjustments. The left rear tire is badly worn on the outside and he recommended immediate replacement, which is awaiting warranty claim processing. Possible safety issues: Rear tire blowout, rear suspension alignment failure with loss of control.

The contact owns a 2024 Hyundai Ioniq 6. The contact stated that upon attempting to install a child safety seat, the rear driver's and passenger's side seat belt tongues failed to fit into the buckle, preventing the seat belt from fastening securely, and compromising the safety restraint system. No warning lights were illuminated. The vehicle was not taken to the dealer or an independent mechanic. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was unknown. The VIN was not available.

Within one month of purchase I noticed a bubble in the paint. The bubble is now cracking and affecting the gunmetal blue paint. I’m concerned this paint problem will lead to chipping and peeling in the paint.