This bulletin outlines changes to the service procedure regarding the replacement of 8-speed wet dual...
Hyundai technical service bulletin 23-AT-011H for 2021-2023 Hyundai Sonata, 2021-2023 Hyundai Santa Fe and 2022-2023 Hyundai Santa Cruz.
- Bulletin number
- 23-AT-011H
- Component
- Power train
- 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.
Owners of these vehicles have filed 336 complaints in the transmission category.
Vehicles covered
- Hyundai Sonata 2021-2023 202120222023
- Hyundai Santa Fe 2021-2023 202120222023
- Hyundai Santa Cruz 2022-2023 20222023
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