This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.
So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.
- EV Fuse blown My Hyundai Ioniq5 EV electrical system stopped function on March 25th, 9 month after we purchased this EV, on a busy highway. It took Hyundai dealer 8 weeks to fix this issue. Due to the fix report, some fuse was blown. - Automatic Emergency Braking engaged On Jun 16th, when driving on HW 90 west bound, road was clean. No vehicle in front of me. The "Automatic Emergency Braking " was engaged. This could be very dangerous if the highway was busy.
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.
Failed EV drive system. Error messages of electrical problems and shortly went complete dead. 12 volt battery was dead and won't charge. Car was towed to Ideal Hyundai in Fredrick MD. Dealer reported failed ICCU and parts for repair are on back order. Fortunately the failure occurred when pulling away from parking. If I had been at highway speed it could have been disastrous.
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
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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.
Called an ICCU failure. It's the control unit that charges the 12V battery from the high voltage battery. The unit fails blowing the high voltage fuse. Failure of this component causes the vehicle to all but shut down, even while driving. This is known by Hyundai. Others have said this happens at about 12 months and 10,000 miles. My car was 53/54weeks old and had 9,300 miles. This failure of this part may have also caused my AC to stop working. As pressure sensor on the 12V system that was working before the component failed was not working when I received the car back, resulting in another lengthy repair. I had about 0.7 miles warning, a yellow check EV system lit up, then the whole dash lit up saying to pull over immediately. The ICCU was replaced by Hyundai with the "2023 spec" version.
Was driving on the highway and got a warning to check electric system, then it asked to pull over due to battery failure. The car's 12V battery died and it wouldn't turn on. Had AAA replace battery, and then drove it to the dealership. The power gave out close to the service center and the car moved really slowly. It took the service center to diagnose the issue as ICCU failure. It's been 4 weeks and there is no ETA on the part.
This is a rampant problem with my car as I have seen hundreds of the same reports throughout the many Ioniq 5 forums I am on. 4/22/23 my car died leaving me stranded. Apparently, the early revisions of the car I bought in March 2022 has a problem where the ICCU and inline fuse will go out over time leaving the car useless and frankly a hazard as I had to immediately pull over when the error message popped up. The issue IMHO should be a recall at this point. It has been sitting at a dealership awaiting the back ordered parts and Hyundai corporate denies that this is an ongoing problem even though I can see all the evidence widespread on the internet. Currently in the process of contacting a lawyer about a lemon law/class action lawsuit.
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!
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.-??
Vehicle will not charge at advertised speeds. Vehicle notifies me via phone app notification that -??vehicle is not charging. Please try again. Ensure the vehicle infusions is off and gear shift is in park.-?? The car only charges if manually adjusted in settings to charge at minimum charging speed. The car used to charge at adversities speed and no longer does ever.
Electrical system not working. The vehicle does not charge. The 12Volt battery is completely dead and vehicle does not start. Before the vehicle gone offline - it was reporting Electrical System is not charging and dead immediately. I towed the vehicle to Route 1 South, South Brunswick, NJ Hyundai Dealership on May 19th, and still in repairs. The main battery pack was showing 90% charge. The vehicle reported problem in the middle of the driving and completely slowed down to below 25Miles before and came to grinding halt. Jumpstarting the vehicle did not help.
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.
The vehicle does not charge. After multiple attempts by the dealer to fix the issues, the vehicle is still in the shop. I am told it now charges on level 3 chargers (super chargers not available widely) only and does not charge on level 1 and 2. Various parts have been replaced but Hyundai corporate and the dealer has not been able to identify the issue or fix the problem after 45 days. I have filed a complaint with Hyundai and requested that the company buyback the vehicle. No response from Hyundai. I do not feel safe driving the vehicle. The vehicle is in repair with Lia Hyudai of Hartford, CT. Thank you, Bhavani 917-605-9772
As I was parking my car I got a yellow warning battery light. It said to check the electrical system. When starting the car the warning light came back on and this time the car went into "turtle mode" where the car won't go over 25 miles per hour. After that the car flashed a red warning light and said to stop driving immediately. I called for a tow and the dealership diagnosed the problem as an ICCU and Fuse problem. They informed me they have ordered the part but that it make take over a month to get the part in. The car only has 11,000 miles on it and is just over 1 year old.
On may 12 I was driving on Lake Mead hwy when I heard a pop and lost power I pulled over and checked the car and couldn't find any visible issues I was very close to home, The car went into turtle mode and was able to make it home just before everything shut down. The Hyundai dealer said its the ICCU unit and fuse. No accident or injuries. Lucky I wasn't traveling to CA. which I often do.
A D V E R T I S E M E N T S
- Tampa, FL, USA