This bulletin provides information related to a Transmission Control Unit (TCU) software update for...
Hyundai technical service bulletin 23-AT-012H for 2021-2023 Hyundai Sonata, 2021-2023 Hyundai Santa Fe and 2022-2023 Hyundai Santa Cruz.
- Bulletin number
- 23-AT-012H
- Component
- Power train
- Summary
- This bulletin provides information related to a Transmission Control Unit (TCU) software update for certain vehicles equipped with an 8-speed wet dual clutch transmissions (8WDCT) that improves the touch point learning variation. Certain 8WDCTs (indicated by a new part number) 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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