2024 Hyundai Ioniq 6 Electrical Problems

Which parts fail

• Horn
  1

Components named in complaints (battery, alternator, wiring, ignition, instrument cluster, infotainment).

Owner reports

Selected complaints filed with NHTSA by 2024 Hyundai Ioniq 6 owners, lightly cleaned up (personal details are redacted by NHTSA).

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. …

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. …

I had my first ICCU recall issue, it was taken care of at Holler Hyundai in Orlando, Florida. I don't even remember seeing a recall email sent out to me, or even a call given about the ongoing recall issues. I found out about the ICCU issues from Reddit of all places, but post after post of people detailing their issues. My concern is that there's numerous post, about EV battery failure while driving or getting ready to take a trip. Imagine getting locked out of your car in freezing temperatures? Due to it being an EV it's a lot more difficult to start or get in, and I don't always carry my physical key. I only received on key, so imagine if I lose that one. You can't use the app or key fob to get in, cause everything works off the 12v battery which is in operable at that point. Hyundai is not addressing this issue with its customers, or even potential customers which is disheartening. …

I had the ICCU unit recall taken care of on my car. While driving yesterday evening, I had a complete power failure. There were warning lights on the dashboard so I slowed down until it finally totally stopped. The warning lights said check electrical system and a yellow turtle light came on. While waiting for the tow truck all electric stopped including the flashers. It was dark, during rush hour and 10 degrees outside. I was left stranded, blocking traffic and with no heat. People were honking their horns and fighting to get around me. The street became one lane. It was very dangerous for me, I was a sitting duck. It also became dangerous for pedestrians trying to walk while cars squeezed around my car. Again, all of this happened in the dark in 10 degree weather. I waited all day to get a diagnosis from the dealer but they were too busy. …

The ICCU failed on my vehicle after 25,000 miles on a 2024 model year car. Driving on a cold and wet night, after pulling away from a stop sign, we heard a large POP and then dashboard lights indicating an electrical system problem. Apparently the sound was a fuse blowing, and then the car went into limp mode. We were able to drive at approximately 24 mph for about 5 minutes before the car told us to stop immediately. We had to get the car towed to a dealership the next day, after getting it towed to our house first. If this had happened on a freeway it would have been a very dangerous situation. We were told it was a just a "bad part". But there had been a previous recall for software update, and this part still blew up. There is nothing we are told that can be done and some of the units are just bad. Hyundai should find the ROOT CAUSE of this issue, and fix it!

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.

This incident just happened around 9:50pm. I have a 2024 ioniq 6 SEL with 2900 miles. I lost power to my motor while going below 45 mph. The gage that shows acceleration and recharge, zeroed out, showing absolutely nothing. Once I came to a complete stop, I had to restart the car for the accelerator to work. I am on 37% charge. This is not a low charge. There were no warning lights or sounds. I had smart ventilation on as well as lane assist. The steering wheel control became very sticky as the car began to lose power. I am thankful that this was a low speed occurrence and not highway speeds. The fact that I couldn't accelerate means that if something was oncoming, I was in essence a sitting duck. This is the first time the problem has occurred in my vehicle and has not been inspected.

Today, I had a scary situation on my 2024 Hyundai Ioniq 6 limited. While backing out of a parking space, I put my foot on the brake to place the car in drive and the car kept rolling back no matter what I did and almost crash into the car park across. I was able to finally stop the car by placing it into park repeatedly. I was inches from striking the car across when it finally came to a stop. I then attempted to place it in drive again and no dice. I had to turn the car off and back on to get it to respond and place it back to drive. Anyone else experience this helpless feeling? Quite scary. This vehicle has had the various ICCU updates performed.

I received the safety recall letter and attempted to make an appointment with Modern Hyundai of Concord, NC. Service appointments were listed online beginning at the end of August and had available time slots, I wanted to check on any further availability so I called. Once I had the service department on the phone I was told that the earliest they would be able to schedule me is in October. I reiterated this was a safety recall and I purchased the vehicle from this dealership and was told that the dealership is a "high volume service center" and nothing could be done until October.

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.

Related recalls

Electrical complaints in other Ioniq 6 years