Hyundai Santa Cruz 2021–2023 — technical service bulletin
Bulletin 23-AT-011H · NHTSA communication 10241891 · issued Aug 28, 2023
Technical service bulletin
communication type
Power Train
component
2021–2023
model years
8
vehicle entries
Official summary
This bulletin outlines changes to the service procedure regarding the replacement of 8-speed wet dual clutch transmissions (8WDCT) and associated transmission control unit (TCU). These changes only apply to vehicles equipped with Theta 2.5T engines. Certain transmissions (indicated by a new part number) have received an improved clutch spring. The correct TCU software update must be matched with the correct corresponding 8WDCT hardware, otherwise drivability concerns may occur.
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.