2017 Hyundai Ioniq Electric

Issue: 
On certain Ioniq EV models, the vehicle could accelerate after the accelerator pedal is released. 
Note: This problem can only happen under certain conditions after the vehicle enters "fail-safe" mode. 

Safety Risk: 
A vehicle that continues to accelerate could create the risk of a crash. 

Corrective Actions: 
Hyundai will notify owners by mail and instruct you bring your vehicle to a dealer to update the electric power control unit (EPCU) software. The dealer will also add additional ground wiring between the drive motor/gear assembly and frame.

On certain Hybrid and Plug-In Hybrid (PHEV) vehicles, the main relay contacts in the Power Relay Assembly located underneath the rear seat may have an inadequate connection. This could increase electrical resistance and generate heat, increasing the risk of fire causing injury and/or damage to property. Correction: Dealers will inspect the Power Relay Assembly for signs of thermal damage. If no thermal damage is found, the main relay will be replaced. If signs of thermal damage exist, the Power Relay Assembly will be replaced. Note: This problem may cause the Illumination of the HEV warning light while driving and/or an inability to start the vehicle.

On certain vehicles, the hydraulic clutch actuator (HCA) was produced with burrs that could damage the inner oil seal. A damaged oil seal may create an oil leak that could result in an accumulation of oil in the phase cap area, and eventually cause an electrical short. This could increase the risk of an engine compartment fire causing injury and/or damage to property. Correction: Dealers will dealers to inspect and, if necessary, replace the hydraulic clutch actuator. Note: This recall only affects IONIQ HEV (Hybrid Electric Vehicle) and IONIQ PHEV (Plug-In Hybrid Electric Vehicle) models.

On certain electric vehicles, the aluminium housing of the Electronic Power Control Unit (EPCU) may contain voids which could allow coolant to contact the control unit's circuit board. This could result in a loss of motive power while the vehicle is in motion, which could increase the risk of a crash causing injury and/or damage to property. Correction: Dealers will inspect, and if necessary, replace the EPCU assembly. Note: Ioniq Hybrid and plug-in Hybrid models are not affected by this recall.