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September 18, 2017 Service bulletin

Small oil leak from the electric oil pump (EOP) seals

Hyundai technical service bulletin 5NP-B9K3N-10 for 2016-2018 Hyundai Sonata.

Bulletin number
5NP-B9K3N-10
Component
Power train: automatic transmission
Summary
Some Sonata Hybrid (LF HEV) vehicles may experience a small oil leak from the electric oil pump (EOP) seals. If so, follow the Service Procedure in this bulletin to inspect and repair the oil seals between the transmission and EOP. No drivability issues are associated with this condition.

Owners of these vehicles have filed 155 complaints in the transmission category.

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