Stop vehicle and check battery supply error and the car died. No power whatsoever. Likely linked with the faulty ICCU issue.

- Ellicott City, MD, USA

I started getting the error Electric Vehicle System error in my month old Ioniq 5. After driving a few miles, the air conditioning stopped working completely. And after a few more miles, the vehicle started to throttle down the speed to 20-25mph that too on the I95 with a 65mph speed limit. Had to turn on the emergency lights and drive slowly till I reached my destination. After googling for a while, I found that this issue is related to the ICCU failure that is pretty common in the Ioniq 5 and Hyundai is yet to issue a permanent fix for this problem. I don-??t know why we are allowing the sale of these vehicles with known issues. You can even Reddit the ICCU issue.

- Newark, DE, USA

Car: 4 month old 2023 Ioniq 5, Starting on September 12, 2023 my car would not take any charge AT ALL, effectively make my car useless as I am down to 10 miles of range. For the next several days I tried multiple chargers at different locations trying both 350 kW and 7kW chargers. Other cars were able to charge their cars immediately after I moved from the charger. I have read that the software update I am going to get will reduce my charging capacity rate to fully charge slower. This car is not performing at the stats I chose it for. I will not be able to use this car if it cannot take fast charge for a full charge. I was not made aware of this issue that was well known to Hyundai (they have been dealing with this issue with its earlier Ioniq models) before going forward with this car. Nor would I have decided on this car if this issue was known to me.

- San Francisco, CA, USA

9/11 Saturday lease deal agreed 9/13 car picked up 9/23 Air conditioning stopped working and car throws a warning message requesting immediate service. 9/25 Parts required to fix the problem not available in the US or Canadian Hyundai Parts inventory and dealer does not know when they will get the parts. 10/3 Dealer advises no update on parts. Hyundai Customer Care notified today and is investigating. From what I can determine, this is the dreaded ICCU issue which plagued the 2022 Ioniq 5.

- Bella Vista, AR, USA

Rear electric motor overheating on highway and motor shuts off only allowing front motor to work but acceleration is near nothing and is extremely dangerous. No codes or warnings pop up was told by friends with other ioniqs that it's a electric motor oil pump that malfunctions but hyundai refuses to solution ND realize that there is a problem with motor malfunction

- Palmdale, CA, USA

While driving on the highway, after about 45 minutes, the electric vehicle goes into Turtle power-limited mode. The vehicle instantly reduces in speed from 70mph to as low as 35 - 45 mph. There are no warning lights or sounds. If you immediately stop the car and let it sit, it will work again temporarily but after 30 - 40 more min or less of driving, it will again go into turtle mode. Additionally, acceleration is non-existent when its power is limited, inhibiting the ability to safely drive as required to pull over or across intersections. This has been a constant event occurring multiple times and each time the vehicle has been on a freeway or highway. The dealer applied the repairs in the photo supplied, but they did not work.

- Phoenix, AZ, USA

I took possession of my vehicle 1/12/23 and charged it successfully in my garage with my level 2 charger at 48A per Hyundai's specifications until May 19, 2023. Charging aborted prematurely on that date due to overheating of the charging port. Starting May 20, 2023 I lowered the charging rate in my level 2 charger to 40A despite Hyundai's stated specifications that 48A was supported. I also started tracking my charging with an OBD2 scanner and noted the AC Inlet 1 port temperatures. From 6/26/23 to 7/25/23 as summer temperatures in my garage here in NJ from 75 to 84, peak port temperatures reached 226 to 237 degrees but charging completed. On 7/28/23 with a garage temperature of 86, port temperature reached 239 and charging aborted again. I then had to lower the charging rate to 36A. This is lengthening my charging times and is not consistent with Hyundai specifications when I purchased the car. I am concerned I will have to continue lowering the charging rate to continue operating the vehicle. These high temperatures may also be dangerous. Hyundai so far has merely issued a Technical Service Bulletin 23-EV-003H that does not fix or replace the inadequate part(s), it merely slows down charging inconsistent with their specifications. This is not acceptable and as a safety issue NHTSA should require Hyundai to recall and replace the insufficiently performing part(s). My car is available for inspection. This overheating and lengthening charging time is a safety issue. The vehicle has not been inspected by the manufacturer or local dealer. There were no warnings of these occurrences. Charging simply halts when it exceeds 237 degrees Fahrenheit for my 2023 model.

- Monroe Township, NJ, USA

Level 2 Charging intermittently shuts off or is throttled back to very low charging rates. THis results in car not being charged enough to be used. Hyundai advertises charging rates of 10 KW, but charging is either throttled back to 5 KG or shut when charging at 48 AMps.. Hyundai claims to know of this problem where some internal components of car overheat.

- Yorktown Heights, NY, USA

Our car repeatedly fails to complete charging using Level 2 chargers at 48-amps. The car sends an overheating error, stops charging and then starts charging again later (presumably after it has cooled down). Sometimes is fails to restart charging completely. This makes it impossible to get a fast, reliable Level 2 charge in a timely manner. We get a text to our cell phones alerting us that charging has stopped due to overheating. We have notified our dealer and they are offering a software patch from Hyundai that simply slows the charge amperage to 28-amps when an overheating error occurs rather than offering a hardware solution that allows for full 48-amp Level 2 charging as the car is supposed to be capable of.

- Oldwick, NJ, USA

When driving in I Pedal mode (which is the one-pedal mode), the brake lights do not light up when decelerating, and it almost caused us to be rear-ended yesterday. Drivers pull aside me and tell me my brake lights don't properly come on when I slow down. Apparently this defect was on the national news several months ago and Hyundai promised a software fix by mid-July. I was just at the Carlsbad, CA Hyundai Service Center this morning and was told they do not have a software fix for this issue. This car should officially be recalled by Hyundai and the NHTSA and owners should be warned officially they are driving a dangerous, defective car.

- Carlsbad, CA, USA

My car fails to charge using Level 2 40 amp charger. The car is supposed to be able to maintain charging between 40 and 48 amps. It is clear that the car is overheating during Level 2 charging and suspending charging. This can be dangerous especially if the car is advertised to be able to charge normally using Level 2 chargers. Note that the summer has been hot. Even in my garage at night, I can no longer charge at 40 amps. I have to lower my Autel charger's current down from 40 amps to 32 amps, and that seems to work. Outdoors during the day, I have to change the car's current to 60%, just so it can continue to charge without overheating. My car is less than 6 months old.

- North Las Vegas, NV, USA

Charge port is overheating and stopping charging. Widespread issue after the cars age. Their only fix is a software update that drastically throttles current to the car. Rendering very long charging times compared to what was advertised. Something is deteriorating in the electrical system since the cars charge fine when new. Overheated electrical components is very concerning. I hope NHTSA makes Hyundai remedy this issue!

- Indianapolis, IN, USA

I have a 2023 Ioniq 5 that was purchased in June, 2023 and an 2023 Ioniq 6 that was purchased in April, 2023. I had a new Chargepoint Home Flex charger installed in April when I purchased my Ioniq 6 and set the charging current to 40 amps. The charger was hardwired directly to my service panel with the appropriate 6 gauge wire and 60 amp breaker. My Ioniq 6 reliably charged at 40 amps until early July when it started dropping the charge rate to 23 amps about 40 minutes into my charging session when using the level 2 charger at home. My Ioniq 5 only charged at 40 amps for the first week of ownership before starting to drop the charge rate to 23 amps. When this behavior started I plugged an OBD2 scanner in and was able to monitor the AC Charging Inlet temperature and noticed that the charge drop happened when the temperature reached 240F. This causes an issue when planning my charge times because they can essentially double, meaning that my vehicles are not ready for a trip by the estimated time. I am also concerned that having electronics that overheat on an EV may be a potential fire hazard in the future. One of the key reasons for purchasing these vehicles was the advertised charge times. I have appointments with the dealership to have both vehicles examined.

- Surprise, AZ, USA

Charging port overheats while charging causing it to stop charging. Charging port is hot to the touch. Seems like a fire hazard. This issue has gotten worse over the last few weeks.

- Brentwood, CA, USA

The vehicle keeps tripping out due to the charger load on the car. This is concerning due to the repeated failures charging.

- Holland, NE, USA

This is an electric vehicle, stated in product literature and safety sticker at charge port that it is capable of 48A / 240V AC charging. Under normal circumstances, the charging port overheats when supplied with 48A / 240V AC. The vehicle aborts charging due to the overheating charge port when ambient temperature is above 70 degrees Fahrenheit. This is a safety risk, and the charge port needs to be designed in a way that it will not overheat when charging at levels specified in the manual and safety tags located at the charge port, regardless of normal ambient temperatures.

- Saratoga Spgs, NY, USA

Vehicle is rated to charge at up to 48 amps. Charging at over 32 amps causes a failure due to overheating

- Brookhaven, GA, USA

I have an Emporia charger connected to a 60AMP breaker that can charge at a constant 48amps. This was installed as per the codes by a certified electrician. I have been owning this car since October 2022 and has over 14k miles on the car. Till last week, the car charged at 48amps without any issue. But since yesterday, charging starts smoothly till 1-2 hours. Then every 6-7 minutes, charging stops for some seconds and starts back up. After several cycles of stop and start charging, the entire charging ends before reaching the set limit. 2 weeks ago, the dealership updated the VCU as per the latest June TSB Hyundai released.

- Sheboygan, WI, USA

Loss of power when accelerating, Warning lights came on and off in blinking style. After losing power to zero, it would jump accelerate hard then die again.

- Foster City , CA, USA

Vehicle fails to charge at full level 2 charging speeds. When set to 48 amps the vehicle quickly reaches a high AC inlet temperature and stops the charging. When lowered to 38 amps the vehicle charges for longer but eventually reaches the high AC inlet temperature and once again stops charging. Level 2 charging must be set to a low max of around 32 amps to successfully charge the car without it stopping the charging. Car is advertised to support 48 amps but does not work correctly. MyHyundai app constantly gives the "Electric vehicle charging alarm" message which indicates the issue occuring.

- Delray Beach, FL, USA