
Hyundai Technical Service Bulletin 26-BE-009H addresses a "NO START OR UNABLE TO ENTER READY MODE" condition in some 2025 Ioniq 5 (NEA EV) vehicles. This TSB outlines the procedure to inspect and potentially replace the Body Domain Control (BDC) module.

Hyundai has issued Technical Service Bulletin 26-01-029H (Campaign LA9) for 2025 Ioniq 5 and 2026 Ioniq 9 vehicles. This bulletin addresses a high-frequency noise from the front motor area during low-speed deceleration, detailing the replacement of the front motor and reduction gear assembly.

Hyundai has issued Technical Service Bulletin 26-BE-006H for certain 2025 Ioniq 5 vehicles experiencing inoperative automatic front wipers. This issue is often caused by a contaminated rain sensor lens and requires inspection and potential replacement.

Hyundai has issued Technical Service Bulletin (TSB) 26-EV-002H for certain 2025 Ioniq 5 vehicles. This TSB addresses a condition where a voltage difference between battery cells prevents the High Voltage Battery from fully charging, often indicated by DTCs P1AA700 or P1AD300.

Hyundai's Service Campaign 25-01-056H addresses a potential noise issue in the Motor-Gear Drive Unit (MGDU) of certain 2025 Ioniq 5 vehicles. This is caused by a missing wave washer, requiring replacement of the MGDU assembly.

Hyundai's Service Campaign TCY, TSB 25-01-037H-1, addresses 2025 Ioniq 5 models (NEA EV) that may have missing rear license plate mounting holes. This bulletin outlines the inspection and replacement procedure for the rear bumper cover to ensure proper license plate installation.

Hyundai has issued Technical Service Bulletin 25-01-037H for certain 2025 Ioniq 5 vehicles that may be missing rear license plate mounting holes. This TSB outlines inspection and replacement procedures.

Hyundai Technical Service Bulletin 25-BE-011H details an issue with certain 2025 Ioniq 5 vehicles where LEDs in the inner rear combination lamp may be inoperative. This bulletin provides inspection and replacement guidelines.

Hyundai Technical Service Bulletin 25-BE-009H addresses a Central Communication Unit (CCU) software update for the 2025 Ioniq 5. This update enables Plug & Charge service and involves two key events, 1233 (AP) and 1234 (MCU), which can be performed via Ethernet or OTA.

Hyundai Technical Service Bulletin 25-EV-002H addresses a charging issue in certain 2025 Ioniq 5 vehicles, indicated by DTCs P1AA700 or P1AD300, requiring inspection and potential replacement of the Battery System Assembly (BSA).

Hyundai has launched Service Campaign 9B9 for certain 2025 Ioniq 5 vehicles to address incorrect key fobs. Owners are advised to bring both key fobs to a Hyundai dealer for a free inspection and potential replacement to ensure proper functionality.

Hyundai has launched Service Campaign 9B9 for 2025 Ioniq 5 (NEA EV) vehicles, addressing the issue of incorrect key fobs. Dealers will inspect and replace the key fobs as necessary, following TSB 25-01-011H, at no cost to the owner. Owners will be notified via mail in March 2025.
My car starting throwing a “check electric vehicle system” warning intermittently beginning on July 7, 2026 which went away when I restarted the car. This happened again on July 27, 2026 three to four times while I was driving. The car did not lose power. As I was going to dealer the warning cleared and no code showed up in my diagnostic history. On August 12, 2026, the car once again showed "check electric vehicle system” and would initially clear when I restarted the car. I then began having intermittent power. Floored, the car would only go 27 mph. Then it would speed up again, then slow again. I was not in “turtle mode.” Luckily, I was able to safely get the car to the dealership without having an accident. DTC P1A8D13 did show in my diagnostics. The technician found that the 12v battery input had melted at the ICCU. This is very dangerous and could have led to a vehicle fire. My 2025 is on its 2nd ICCU (now 3rd) and has not had any recalls, so this is very troubling.
No injuries · No fire · No crash
ICCU failure. Failure happened while merging onto the road from driveway. Upon failure, 12 V battery was drained and car was immobilized. Prior to car mobilization dash read “Check electrical vehicle system” then many different failures appeared on the dash, then the car shut down. This event left us stranded on the road, unable to move to a safer location. Issue was confirmed with dealer and part had to be replaced. Part was original to the car and issue is known by the manufacturer but not being dealt with publicly.
No injuries · No fire · No crash
While driving on normal paved roads, a small vibration was heard from the rear of the vehicle. A person near the car when leaving the origin that morning heard a minor clicking sound at low speed from the rear of the vehicle. The vibration at that point seemed to be related to the rural mountain road that had some rutting. Continuing to drive, but onto better roads, the vibration became louder and louder, and appeared related to speed. Nothing appeared loose when stopping to charge. Vibration became loud (above conversation), stopped to inspect. Removed aerodynamic cover from lug nuts on right rear, and found two lugnuts completely sheared off (fell out when cover removed), with a third hanging on at less-than-finger tight. Vehicle driven slowly to safe location where it was towed to dealer. Dealer reported that the rim was bent in addition to sheared lug nuts as well as a damaged wheel bearing.
No injuries · No fire · No crash
In June 2025, I started a lease on a new Hyundai Ioniq 5 SEL. On August 16, 2026, I attempted to start the car, but it immediately beeped and flashed a warning about the 12V battery (I didn't manage to take a picture). It then showed signs of an electrical issue, like flickering interior and exterior lights. It was undrivable. A short time later, there was no power at all. I took out the old 12V battery and measured the voltage with a multimeter, and observed 3.7V. After putting in a new battery, the car operated normally.
No injuries · No fire · No crash
Two tires failed dramatically, (on two separate days, but separated by only 121 miles of driving), causing extensive damage the first time and causing a total loss the second time. The first tire has been disposed of, but the second is available still. Each was on the highway and luckily there was not much traffic so I was able to pull safely onto the shoulder each time. However, if I had not been able to get over, our safety and that of others was at risk if we had been involved in a collision. My safety and my that of my elderly, handicapped brother was at risk the first time especially, because this is an EV and at one point on July 4, 100 degree temperatures in the early afternoon in South Carolina, the electrical system had been damaged and we could not, for a few minutes, get doors or windows open. The components (tires) have only been inspected by repair shops. There was no warning either time. The tires are 235/55 R 19.
No injuries · No fire · No crash