Hyundai Santa FE 2021–2023 — technical service bulletin
Bulletin 25-AT-001H TSB · NHTSA communication 11018891 · issued May 30, 2025
Technical service bulletin
communication type
Power Train
component
2021–2023
model years
5
vehicle entries
Official summary
Certain Santa Fe (TMA) and Sonata (DN8/DN8A) vehicles equipped with 8-speed dual clutch transmissions (8DCT) may exhibit one of the DTCs listed below, related to the high pressure electric oil pump (HP EOP). Follow the procedures in this TSB to update the Transmission Control Unit (TCU) to the latest sensorless logic on affected vehicles, and then perform air bleeding and transmission learning.
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.