Hyundai Sonata 2016–2018 — technical service bulletin
Bulletin 5NP-B9K3N-10 · NHTSA communication 10118671 · issued Sep 18, 2017
Technical service bulletin
communication type
Power Train
component
2016–2018
model years
3
vehicle entries
Official 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.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.