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NHTSA recall 18V704000

A recall listed here may apply to a vehicle of this year, make and model. Only the manufacturer can say whether it applies to one vehicle: check the VIN with the official lookups.

Campaign
Published byNHTSA (United States)
Campaign number18V704000
Manufacturer's number178
ManufacturerHyundai Motor America
Reported2018-10-05
Owners notified2019-02-28
ComponentHYBRID PROPULSION SYSTEM: INVERTER
Units potentially affected10575
Remedy progress the manufacturer reported
ReportQuarterly report 6, for 2020 quarter 2
Filed with NHTSA2020-07-31
Vehicles in the campaign10575
Reported remedied8712 (82%)
Reported unreachable27
Reported removed334

These are the manufacturer's totals for the whole campaign at the end of 2020 quarter 2, as filed with NHTSA. They do not say whether one vehicle has been remedied: check the VIN with the official lookups. The reports are from data as of 2026-10-19.

What is wrong

Hyundai Motor America (Hyundai) is recalling certain 2017-2018 Hyundai Ioniq Hybrid and 2018 Ioniq Plug-In Hybrid vehicles. The Main Relay within the Power Relay Assembly (PRA) may have inadequate connections between its contacts, causing increased electrical resistance.

What can happen

The increased electrical resistance can overheat the rear seat which is above the PRA, increasing the risk of a fire.

The remedy

Hyundai will notify owners, and dealers will inspect the Power Relay Assembly (PRA) for damage. If no damage is found, the main relay will be replaced. If damage is found, the PRA will be replaced. These repairs will be performed free of charge. The recall began February 28, 2019. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 178.

Notes

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.

Vehicles this campaign lists
2017 HYUNDAI IONIQ HYBRIDBuilt 2016-11-16 to 2017-08-16. Listed as a series or trim of this model.
2018 HYUNDAI IONIQ HYBRIDBuilt 2016-11-16 to 2017-08-16. Listed as a series or trim of this model.

A vehicle with no link is not in this site's catalog, which covers cars, multipurpose vehicles and trucks by model year. The campaign is from data as of 2026-10-19.

Bulletins for the same vehicles and component

Bulletins for the same vehicles and component
5NP-T8M5S-032017-08-10. Service bulletin. This bulletin provides the service information for the Ioniq HEV 12V integrated Lithium Ion Polymer (LiPO) battery system.

A bulletin is the manufacturer's note to its dealers. It is not part of this recall.

Check one vehicle officially