Summary
The Hyundai Ioniq has 12 recalls covering 2017 through 2020 model years, with the most serious being a wheel lug nut issue on 2019 Plug-In Hybrid models where insufficiently tightened lug nuts can allow a rear wheel to detach while driving, creating a crash risk for the vehicle and a hazard for surrounding traffic.
Several recalls cluster around fire and electrical risks in the 2017 and 2018 model years across all three powertrain variants. On 2017-2018 Hybrid and Plug-In Hybrid models, the Power Relay Assembly located beneath the rear seat can develop overheating electrical contacts, raising the risk of a fire in the cabin area. A prior repair attempt for this issue did not fully resolve the problem, and a follow-up recall was issued covering the same 2017-2018 vehicles. On 2017 Hybrid models, the hydraulic clutch actuator can develop an oil seal leak, allowing oil to pool near electrical components and cause a short that can lead to an engine compartment fire.
The 2017 Electric version has two related issues with the Electronic Power Control Unit: its housing can contain internal voids that allow coolant to reach the circuit board, cutting drive power while the vehicle is moving. There is also a separate concern on 2017-2019 Electric models where an unstable electrical ground can put the vehicle into a reduced-power fail-safe mode, and under certain conditions in that mode, the vehicle can continue to accelerate after the driver releases the pedal.
Going back to the earliest production year, 2017 models across Hybrid variants also had the hydraulic clutch actuator oil seal issue described above, covered in overlapping filings that all describe the same fire-risk consequence. A compliance label recall affects 2018 Plug-In Hybrid models, where the vehicle identification label may show incorrect weight ratings for the front and rear axles.
