2022 Hyundai Ioniq 5 Problems

What owners report

Owners of this model year most often describe the vehicle losing drive power or refusing to charge, usually traced by dealers to the Integrated Charging Control Unit (ICCU); many report it after recall work was already done. A second cluster of complaints covers interrupted Level 2 home charging, often described as heat at the charge port or charging stopping above roughly 32 amps.

1. 1
   Electrical system

   Loss of drive power / ICCU or fuse failure

   • 296 complaints (73%)
   • median 25,000 mi at 2.2 yrs old (15 state mileage)
   • 2 mention a crash, fire or injury
   • filed 2022–2026

   Owners describe a "Check Electric Vehicle System" message followed by a sudden drop in speed, a turtle or limp mode, or the vehicle stopping entirely, sometimes after a loud pop. In other cases the car will not start or will not take a charge, and the 12-volt battery is found drained. Complaints say dealers diagnosed a failed ICCU and, in some cases, a blown high-voltage fuse; several owners report the part was backordered and the car sat at the dealership for weeks or months. Some describe the same failure recurring even after recall repairs were performed. Reported across the sample from very low mileage up to about 130,000 miles, with many under 30,000 miles and no consistent warning beforehand.

   Recall 24V868000Recall 24V2040005 related service bulletins

   What to check: Ask the seller for the recall and service history and whether the ICCU and its fuse have been replaced, not just reflashed. Confirm the car accepts both Level 1 and Level 2 charging before buying, and check whether the extended ICCU warranty program applies to the vehicle.

   2 excerpts from owner complaints in NHTSA records

   “I was traveling on the freeway when I got a warning saying “check electrical.”i started to pull over on the freeway and my car went into “turtle mode “and I made it off the offramp but almost got rear ended. I was half a mile from home so I limp home in a tow truck towed off. It was determined it is the ICCU.”

   NHTSA complaint #11719583, filed 2026-02

   “The ICCU component failed. I lost propulsion while driving and almost got rear ended. The dealership service department confirmed the ICCU issue. The dealership service department has inspected the vehicle. I had a dead 12v a month prior that I had asked the service department to look at and test the ICCU. They did not test the ICCU. The car warned me 30 seconds maybe less before i lost propulsion.”

   NHTSA complaint #11714329, filed 2026-01
2. 2
   Electrical system

   12-volt battery drains and no-start

   Mentioned in 8 of 60 sampled complaints

   Owners report the car failing to start, needing a jump start, or displaying a low 12-volt battery message even with the main traction battery charged. Some say the 12-volt battery died while the high-voltage battery still showed a substantial charge, and that door locks, warnings or other electrical features stopped working afterward. Complaints describe dealers advising a recharge or replacement first, with the underlying cause traced later to the charging control unit in some cases. Reported from under 1,000 miles to about 65,000 miles, sometimes within weeks of a recall repair.

   Recall 24V204000Recall 24V8680002 related service bulletins

   What to check: Check the age and condition of the 12-volt battery and ask whether the vehicle control unit battery-saver update has been applied. A slow-start or repeated jump-start history is worth asking about directly.

   2 excerpts from owner complaints in NHTSA records

   “My 12v battery died on 11/12 while my main battery still had 52% charge remaining. Had to jump the battery to get the electrical system to work. Since then several of the cars electrical systems are not working. This is a known issue online that Hyundai has responded to but the dealer is saying that they are not aware.”

   NHTSA complaint #11556510, filed 2023-11

   “The contact owns a 2022 Hyundai Ioniq 5. The contact stated that the vehicle failed to start as needed. The contact stated that the battery had discharged. The contact had to jump-start the vehicle. There were no warning lights illuminated. The vehicle was taken to the local dealer but was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 29,000.”

   NHTSA complaint #11550093, filed 2023-10, 29,000 miles
3. 3
   Fuel system

   Level 2 charging stops or overheats

   • 75 complaints (18%)
   • median 21,000 mi at 2.1 yrs old (3 state mileage, few)
   • filed 2022–2026

   Owners describe charging sessions that stop on their own after a short time on a Level 2 home charger, or that only continue at reduced current, with the charge port and plug feeling hot. Some say the car would not accept a charge at all with a "Charging Unsuccessful" message, and one describes a burning smell during a home charging session. Complaints say dealers sometimes attributed it to the owner's charging equipment, while others traced it to the charging control unit or charge port hardware. Reported mostly in the first few years of ownership, often at home on 240-volt Level 2 equipment and sometimes in cool weather.

   Recall 24V8680004 related service bulletins

   What to check: If possible, charge the car on a Level 2 charger during the test drive and watch whether the session completes without stopping. Ask whether the charge port insulation caps were inspected and whether any charging-related service campaigns were applied.

   2 excerpts from owner complaints in NHTSA records

   “The ICCU failed while 300 miles from home. I was unable to charge the car with level 2 charging to get home. Luckily level 3 charging still worked. The ICCU breaking can also disrupt propulsion, so I'm lucky it didn't break to that degree while driving. The dealership ultimately replaced my ICCU. There were no warning signs. In fact, the car didn't even throw a code or error. It simply wouldn't charge.”

   NHTSA complaint #11725470, filed 2026-03

   “ICCU failed and my car will not charge. The dealer has diagnosed this issue. Parts are not available to fix this issue. The problem has been reported to the manufacturer but they have no expected delivery date for the needed parts. I was told it could be months.”

   NHTSA complaint #11712980, filed 2026-01
4. 4
   Brakes

   Vehicle rolls away or parking brake does not hold

   Mentioned in 4 of 60 sampled complaints

   Owners describe the vehicle rolling backward or forward after being shifted into park and switched off, including on a slight driveway slope and in a parking garage. Some report the car moving on its own after the shifter failed to operate as expected, and others describe the electronic parking brake applying or holding unexpectedly. Complaints say dealers and the manufacturer were notified, and the parking-brake software recall applies to this model year. Reported from roughly 500 to 25,000 miles, often on sloped driveways or inclines shortly after parking.

   Recall 22V324000

   What to check: Confirm the parking-brake software recall was completed. On a slope, test that the car holds in park with your foot off the brake before release, and ask whether any shifter control unit work was done.

   2 excerpts from owner complaints in NHTSA records

   “I am writing to report a serious safety incident involving my 2022 Hyundai Ioniq 5 and to request a thorough investigation and guidance on next steps. On Jan. 3, 2026, at approximately 6:15 p.m. on a snowy day, we parked our car in the driveway of a weekend rental home near Lake Tahoe, CA. The driveway had a slight slope toward the house, and we backed the car down the driveway with the rear of the car facing the house. …”

   NHTSA complaint #11712790, filed 2026-01

   “After coming to a stop at a stop sign, and while the gear state was in Drive, the vehicle auto-applied the electronic parking brake because the tailgate was ajar. Gear state remained in Drive. Upon accelerator input, the parking brake did not release, and the vehicle delivered propulsion torque overcoming the parking brake. As a result, the vehicle accelerated and drove several blocks with the rear brakes fully clamped, which was only effectively indicated by a smell and smoke emitted from the rear wheel wells. …”

   NHTSA complaint #11762283, filed 2026-09
5. 5
   Brakes

   Brake lights and one-pedal driving behavior

   • 58 complaints (14%)
   • median 10,400 mi at 1.5 yrs old (4 state mileage, few)
   • 4 mention a crash, fire or injury
   • filed 2022–2026

   Owners describe the brake lights not illuminating as expected when the car slows under regenerative braking in one-pedal mode, and one reports the car accelerating with the parking brake applied. Others mention regenerative braking and pedal feel changing after software updates. Complaints describe the behavior as a following-traffic concern rather than a mechanical brake failure. Reported in the first two years of ownership, generally without a specific mileage pattern.

   2 related service bulletins

   What to check: Ask whether the vehicle control unit brake-light logic update has been applied. Drive in i-Pedal mode and have someone watch the brake lights while you lift off the accelerator.

   2 excerpts from owner complaints in NHTSA records

   “The ioniq 5 has a one pedal driving mode, where the car will come to a complete stop without needing to press the brake pedal, similar to other EV's. In this mode, the gas pedal operates differently then in a conventional car - pressing the pedal approximately 1/3 of the way down represents neutral, where the car coasts. Pressing the pedal less then that - between 1/3 and not pressing it at all, applies braking power to the car, either through regenerative braking or the application of the physical brakes. …”

   NHTSA complaint #11509793, filed 2023-03

   “The contact owns a 2022 Hyundai Ioniq 5. The contact stated while driving at 80 MPH and approaching a red light, the brake pedal was depressed however the brakes failed to respond. The contact engaged the emergency brakes to stop the vehicle but the vehicle would not stop causing the vehicle to rear-ended the vehicle in front of him and causing that vehicle to lose control and hit another vehicle. The contact was not injured and he was unsure if anyone else was injured. A police report was filed. …”

   NHTSA complaint #11471225, filed 2022-06, 11,200 miles

Buying note. The charging control unit and 12-volt power loss reports dominate this model year, so verify recall and service history carefully and confirm both AC charging and 12-volt health before purchase. The extended warranty coverage on the charging control unit and fuse is worth confirming with a dealer for the specific car.

Summary written with AI from a sample of 60 NHTSA complaints for this model year (picked at random, with complaints that state a mileage and recent ones taken first), then checked automatically against the source records. Where a problem shows a complaint count, every complaint for this model year was matched with fixed keyword rules (written with AI and tested against the sample), and the mileage, age and repair figures are calculated from those complaints; owners' figures are as stated, not verified. Other counts refer to the sample. The excerpts come from NHTSA's public complaint records and are unverified; capitalisation is normalised, NHTSA staff notes are removed, and shortened text ends with “…”. Something wrong? Request a correction.