My vehicle began having charge failures at 13k miles. It went from working fine to not charging at all. The dealership has told me it is an ICCU issue and must be replaced. The ICCU is on back order with mo eta. I am left without a vehicle and no compensation.

- Louisburg, NC, USA

The car (2022 Ioniq 5, an EV) lost power while driving. There was warning at the same time stating that the car is losing power and need to stop for safety. Minutes later the car completely lost power and can not be turned on. The car has to be towed to Hyundai dealer. It has been 2 months and 2 weeks and the car is till in Hyundai dealer's lot without being repaired. We were told by the dealer a control unit need to be replaced and it has to be shipped from Korean.

- Weston, MA, USA

Made an attempt to start the vehicle and noticed two messages on the dash as follows 1. "12V battery Voltage Battery Low" 2. "Stop Vehicle and Check Power Supply" Attempted to put the vehicle in drive. The vehicle would not engage in drive mode. Shut the vehicle off and made a second attempt to restart the vehicle. This time the vehicle did not start. Had the vehicle towed to a local Hyundai dealer. Hyundai dealer took 2 weeks to diagnose the problem. Was advised by the dealer that the ICCU module needed to be replaced along with fuses, and coolant. Also noticed vehicle having slow acceleration at times after charging. Also notice a weird noise on right rear passenger side of the vehicle sounding like fluid pumping at times. Vehicle has been at the dealer for 27 days and still not repaired

- Upper Marlboro, MD, USA

Another ICCU / fuse failure......At 17,000 miles, I heard a popping sound and the Check Electrical System" warning came up on the dash. I pulled over and checked the menus on screen but could not find any way to check my electrical system. I pulled back on the road and within a mile the dash displayed a message to "Stop Vehicle.....speed was reduced to about 20 mph and I limped a few hundred yards to my office. Called 4 dealers and each told me they were aware of the issue but already had a number of Ioniq 5's in their service lot but estimated anywhere from 4-8 weeks to "look at it". I found 1 dealer nearby willing to take the car and look at it within a week. Praying Hyundai recognizes this problem and issues a recall soon.

- Hampstead, NH, USA

Level 2 charging fails on warm days if charging above 9kw. I am unable to charge my car on days above 80-90 degrees using my 9.6kw (40 amp) Level 2 charger, as the cars internal will get so hot to the point where it overheats, and force stops charging. Occasionally, I will come back to my car while charging and find it's charging at a much lower speed then it should be. Hyundai claims to have a TSB to fix this issue, but it only neuters the cars charging ability, it doesn't actually fix the ability of the car to charge at 40 or 48 amps on a warm way.

- Mullica Hill, NJ, USA

I turned on the car and immediately got a "check electric vehicle system" error, and then shortly after a "stop vehicle and check power supply" error. I located a nearby dealership to diagnose and repair the vehicle, and called a tow truck to take it there. My car is parked in a garage in an alley. After the tow truck arrives in the alley, I turn on the car and get the same errors, and pull into the alley. As I'm pulling into the alley, the car start behaving very eratically, not responding well to the accelerator or steering wheel, and then within a couple minutes the display goes blank, completely black, with some white glitchy pixels periodically. Thankfully, I had already put the car into neutral at this point so the car could be pulled onto the flatbed tow truck. Once the displays stopped working, the car was completely unresponsive. I was unable to lock or unlock doors by using physical buttons on doors or remote buttons on my key. The power trunk lift gate would not open. In the world of cell-phones, they would say my car was "bricked." Completely unresponsive to any input, and the display still black with occasional white glitching flashing across display. The dealership's diagnostics was that there was a malfunction in the Integrated Charging Control Unit (ICCU). They replaced the ICCU and the 12 volt battery and I received the car back from the dealership. Everything seems fully operational again.

- Chicago, IL, USA

I was driving and could go no faster than 30 mph. I was very close to a dealership (a few blocks) and was able to make it there before the entire car turned off. An electrical error displayed on the dashboard before it shut down.

- Washington, DC, USA

The Hyundai Ioniq 5 advertises quick charging via level 2 (240v) supporting nearly 10 amps. Hyundai has acknowledged by issuing a TSB this year that the charging port overheats at high amperage and causes charging to cease before the battery reaches the intended state of charge. The TSB addresses the issue by slowing the rate of charge substantially when the port overheats. As a result, owners are unable to "refuel (charge)" the vehicle at the advertised rates. In addition to the overheating charge port posing a potential hazard, the result is that an uninformed owner may not have necessary charge to reach their destination.

- Waverly Hall, GA, USA

Ioniq 5 continuously fails to complete charging when on level-2 EVSE. Charging port and plug feel extremely warm to the touch, even in cool ambient weather. Multiple UL-listed charge cables yield similar results, while working perfectly well with other EVs.

- Alexandria, VA, USA

My partner was driving my car on Tuesday, May 23, 2023 and received a "Check Electrical Vehicle System" warning. Within 30 minutes of receiving that warning, the maximum speed on the car was throttled to 20 mph and shortly after that, the car stopped working entirely. Thankfully, my partner was on a residential street when all this occurred and was able to move to safety; however, had any of this happened in a highway driving scenario, the results could have been catastrophic. My car was towed to a dealership that same evening and it has been with the service department since then. The two parts on backorder they are waiting on on the ICCU Assembly and a High Voltage Fuse. Upon searching for other Hyundai IONIQ 5 owners with similar issues, various internet forums are filled with reports of similar things happening. At this point, I have been told this part is on backorder for potentially up to 6-9 months and after repeated calls with the dealership and the corporate office, Hyundai has not acknowledged the extent of this issue, the potential safety concerns, nor offered any relief for being without my, basically brand new, car for the remainder of this year.

- Austin, TX, USA

This is an electric vehicle that features -??iPedal-?? driving, what Hyundai refers to as one-pedal driving. The main safety issue is that when you decelerate using one pedal, which is a fairly aggressive deceleration, the brake lights do not come on unless you lift your foot entirely from the accelerator or apply the brake pedal (which one would rarely do in iPedal mode). Hyundai needs to rethink their concept of operations for how their brake lights should operate. People are at risk of getting rear-ended. I didn-??t realize this was how the vehicle operated until I was almost rear-ended today. Please push them to fix this issue.

- Mclean, VA, USA

I received a warning on my dashboard while driving "Check electric vehicle system". A few minutes later I received the message "Stop vehicle and check power supply". My car would not go faster than 20 MPH, and I had it towed to the dealership. They said it was an ICCU issue and the part was on nationwide backorder. My car has been at the dealership for 41 days.

- Altadena, CA, USA

On 24 May 2023, I heard a "pop" sound when starting my Ioniq5 and immediately received warnings directing me to stop the vehicle and check the battery system. The car was taken to the dealer on the same day and is still out of service. The dealer notified me that the problem is due to an "ICCU" issue and that parts are backordered and they do not have an estimated date for the receipt of parts or repair.

- Warrenton, VA, USA

Started vehicle and heard a loud pop with immediate amber warning to check electrical system with 12 volt battery and EV electrical system warning lights illuminated. While driving to dealerships, vehicle slowed abruptly at Highway speed and warning message said to stop vehicle immediately. Towed to dealership with probable bad integrated charging control unit and high voltage fuse blown. Seems to be an issue with many ioniq 5s. Recall this vehicle!

- Rohnert Park, CA, USA

The 12-volt battery that controls everything in the car stopped being recharged by the 800volt battery, eventually causing the car to suddenly lose power and slow to 22 mph on the freeway. I was able to pull over 3 lanes and exit what was fortunately an uncrowded freeway. The car would not exceed 22 mph and soon stopped altogether and could not be moved. The main 800volt battery was at 56% charge, as the 12-volt battery went to 0%. The car was towed to the dealer. After inspection the dealer has confirmed that the ICCU system has failed and must be replaced, with a long back order and still no delivery date after 5 weeks. There were warning messages that appeared before the vehicle lost power, saying to check the battery electrical system. There should have been a warning that said -??stop driving immediately as the electrical system is failing, and the car may stop even though the main battery is still well charged.-??

- Palo Alto, CA, USA

While driving vehicle, car had sudden and rapid loss of power that resulted in significant decrease in speed. Vehicle was nearly in a rear-end Collision due to sudden drop in speed. The car is currently being inspected by the Hyundai dealership with reported failure of the ICCU.

- Lincoln, CA, USA

Likely ICCU failure incapacitated vehicle while in motion on highway. Vehicle decelerated uncontrollably and would not re-accelerate. Shortly thereafter 12v battery warning appeared and vehicle was no longer operable. Series of warning lights. -??check electric vehicle system-?? upon car starting, -??Stop vehicle and check power supply-?? shortly after starting drive, "12v battery very low" immediately before vehicle went completely dead.

- Charleston, IL, USA

A few minutes into my drive I heard a loud POP from under the rear seat and then an orange EV system warning message flashed on the display. The vehicle slowed down and I couldn-??t maintain speed above about 25mph. Shortly after the first orange alert, the red -??Stop vehicle and check power supply-?? message popped up on the screen along with an emergency warning sound. The vehicle was towed by Hyundai Roadside Assistance to the nearest certified dealer, which took 1 week to diagnose the car. They just confirmed it was an ICCU (Integrated Charging Control Unit) failure and would require a replacement ICCU and high voltage fuse, which are on backorder with no definitive delivery date.

- New York, NY, USA

On 4/24/23, without an prior warning vehicle suddenly became undrivable. Received message: "Stop vehicle and check power supply". Car could lim along < 25mph for short distances. This condition along with indifferent Hyundai roadside assist left me stranded out of state for 5 hours before telling me to find my own way to tow the car. Car is at dealership with a diagnosed ICCU/ICCU fuse issue. To date I am being told that the parts are on back order for 2-3 weeks. Based upon online posts by others with this issue, this is not a realistic expectation. To date, Hyundai has yet to offer substitute transporation, relief from monthly paments, and reimbursement of all expenses incurred as a result of the loss of this vehicle.

- Pine Brook, NJ, USA

Suddenly whilst driving, I heard a soft "pop" and emergency alert sound and message were displayed. Car lost almost all power, but was able to move forward at 12mph to park in a safe place. Car became fully inoperable and required a flatbed tow to dealership. Was diagnosed as an ICCU problem (associated with both 12v battery failure and possible bluetooth related battery drain). Car has been in shop for 6 weeks, waiting on parts. No ETA from Hyundai. If this had occurred 3 minutes later I would have been driving at high speed on the interstate in morning commute traffic. Prior to the "pop" there was no warnings or errors or problems - car worked perfectly.

- Issaquah, WA, USA