2026 Hyundai IONIQ 9 problems & reliability
27 owner complaints filed with NHTSA for the 2026 Hyundai IONIQ 9, alongside 2 safety recall campaigns. Last verified Aug 7, 2026. Complaints are unverified reports submitted by owners to the federal Office of Defects Investigation.
Each complaint is counted once (by NHTSA case number), even when it names several vehicles.
3 complaints report injuries (4 injured).
Most reported problems
| Component | Complaints | Share |
|---|---|---|
| Electrical System → | 18 | 67% |
| Fuel/propulsion System | 6 | 22% |
| Power Train | 5 | 19% |
| Forward Collision Avoidance | 4 | 15% |
| Vehicle Speed Control | 4 | 15% |
| Lane Departure | 2 | 7% |
| Seats | 2 | 7% |
| Unknown OR Other | 2 | 7% |
| Engine | 1 | 4% |
| Seat Belts | 1 | 4% |
Component groups as classified by NHTSA. A complaint can name more than one component, so shares may sum to more than 100%.
All 13 reported components →What owners report
“I am submitting this complaint regarding a suspected manufacturing defect involving an original equipment Hankook iON evo AS tire installed on my 2026 Hyundai IONIQ 9. At approximately 8,000 miles, and with the vehicle only six months old, the tire developed a severe vibration that increased with vehicle speed…”
Wheels · filed Jul 27, 2026
“An Integrated Charging Control Unit (ICCU) failure halts the vehicle’s ability to charge and power the 12-volt battery. When it fails, the car can no longer keep the 12V battery charged. This drains the 12V system, potentially causing a sudden loss of motive power while driving or a "bricked" car that won't start. The…”
Electrical System · filed Jul 22, 2026
“ICCU failure. Warning lights came on in the dash and diagnostic codes were available in my Hyundai app. My family and I had just gotten back from a road trip and if the ICCU would have failed while we were on the trip we would have been stranded and it would have been during the heat wave. The vehicle is currently in…”
Electrical System · filed Jul 14, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Technical service bulletins
15 manufacturer communications (TSBs, service campaigns, warranty extensions) are on file with NHTSA for the 2026 Hyundai IONIQ 9. The 10 most recent:
Certain Palisade Hybrid (LX3 HEV) vehicles may illuminate the Malfunction Indicator Lamp (MIL) and display a false “Check Hybrid System” warning message after use of Bluelink Remote Start following extended parking…
26-01-053H DCS · Warranty Program/Extension · issued Jul 3, 2026
Certain IONIQ 9 (ME1A EV) vehicles may exhibit a Data Communication Unit (DCU) software error due to the internal timer initialization logic not being implemented. The DCU module may shut down telematics services after…
26-01-053H TSB · Warranty Program/Extension · issued Jul 3, 2026
The National Highway Traffic Safety Administration (NHTSA) has identified the presence of substandard and dangerous driver’s-side airbag inflators manufactured by Jilin Province Detiannuo Automobile Safety System Co.…
DTN DL · Other · issued Apr 10, 2026
The National Highway Traffic Safety Administration (NHTSA) has issued an urgent safety advisory regarding dangerous, counterfeit driver‑side airbag inflators manufactured by Jilin Province Detiannuo Automobile Safety…
DTN DCS · Other · issued Apr 10, 2026
Certain IONIQ 5 (NEA EV) and IONIQ 9 (ME1A EV) vehicles (affected VINs listed below) may exhibit a high-frequency noise from the front motor area during low-speed deceleration. This bulletin provides instructions to…
26-01-029H TSB · Warranty Program/Extension · issued Mar 17, 2026
Certain IONIQ 9 (ME1A EV) vehicles may have a sliding center console (rear floor console) that makes a ratcheting noise while being moved forward or backward. This bulletin provides instructions to remove and replace…
26-01-020H TSB · Service Campaign · issued Feb 24, 2026
Certain IONIQ 9 (ME1A EV) vehicles may exhibit adhesive residue on the high mounted stop lamp. This can occur when the clear protective film has had prolonged exposure to sun and heat, causing some of the adhesive to…
26-01-001H DCS · Service Campaign · issued Jan 9, 2026
Certain IONIQ 9 (ME1A EV) vehicles may exhibit adhesive residue on the high mounted stop lamp. This can occur when the clear protective film has had prolonged exposure to sun and heat, causing some of the adhesive to…
26-01-001H TSB · Service Campaign · issued Jan 8, 2026
This bulletin provides information regarding condensation related to the accumulated moisture in the headlamp, rear combination lamp, daytime running lamp (DRL), or fog lamp. This TSB illustrates the various causes of…
25-BD-012H TSB · Service Bulletin/Repair Instructions · issued Nov 6, 2025
Certain IONIQ 9 (ME1A EV) vehicles may have walk-in switches that are not fully secured. Technical Service Bulletin (TSB) 25-01-050H-1 provides instructions to inspect and, if necessary, replace the walk-in switch.
25-01-050H-1 DCS · Service Campaign · issued Oct 25, 2025
TSBs are repair guidance manufacturers send to dealers — they are not recalls and repairs are not automatically free. Full documents are available on NHTSA’s site.
Safety recalls
The 2026 Hyundai IONIQ 9 has 2 NHTSA recall campaigns — recall repairs are free at franchised dealers regardless of the vehicle’s age.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →Buying a used 2026 Hyundai IONIQ 9?
- · Decode the seller’s VIN with our free VIN decoder to confirm the exact year, engine and trim.
- · Check for unrepaired recalls by VIN on NHTSA’s official lookup — recall repairs are free.