Electrical resistance at main relay may cause fire
Defect Summary
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.
Safety Consequence
The increased electrical resistance can overheat the rear seat which is above the pra, increasing the risk of a fire.
Corrective Action
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.
Similar Recalls
Other recalls from Hyundai Motor America or involving Hybrid Propulsion System.
FAQ: Recall 18V704000
Your rights, the repair process, and what each field on this page means.
What is recall 18V704000?
NHTSA recall 18V704000 was issued by Hyundai Motor America on October 5, 2018. It addresses: Electrical resistance at main relay may cause fire. The recall affects approximately 10,575 vehicles, with the defect involving the Hybrid Propulsion System component.
How do I get this recall repaired?
Contact any authorized Hyundai Motor America dealer and reference NHTSA recall ID 18V704000 or the manufacturer campaign number 178. Under federal law, the repair is completely free regardless of vehicle age or owner history.
Is my vehicle included in this recall?
The only way to confirm is to look up your 17-character VIN at nhtsa.gov/recalls. NHTSA's tool will tell you if VIN-by-VIN this exact recall applies.
How long do I have to get a recall repair done?
There is no expiration on most federal safety recalls. Even if your vehicle is years old and you bought it used, the manufacturer is required to perform the repair at no cost.
Where does the data on this page come from?
All information on this page is sourced directly from the U.S. Department of Transportation public dataset for NHTSA recalls. Last refreshed: 2026-05-22. For the most current official notice, visit nhtsa.gov/recalls.