Service campaign 25-01-071H TSB
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
| Type | Service campaign |
|---|---|
| NHTSA id | 11024241 |
| Published by NHTSA | 2025-10-13 |
| Manufacturer's number | 25-01-071H TSB |
| Manufacturer's date | 2025-10-07 |
| Campaign id or software version | TEJA |
| NHTSA component | POWER TRAIN |
NHTSA's summary
Certain Santa Cruz (NXT) vehicles equipped with 8-speed dual clutch transmissions (8DCT) may set one of the high pressure electric oil pump (HP EOP) DTCs listed below. This bulletin provides the service procedure to update the Transmission Control Unit (TCU) with improved logic to address these DTCs and enhance operation of the 8DCT.
The document
The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.
Components
Transmission and driveline
| HYUNDAI SANTA CRUZ | 2025 |
|---|
Listing a model year does not mean every vehicle of it is concerned: the document says which.
| 26-AT-005H TSB | 2026-06-16. Service bulletin. This bulletin provides information related to a Transmission Control Unit (TCU) software update for some vehicles equipped with an 8-speed wet dual clutch transmission (8WDCT). The software update revises the touch point learning variation, improving drivability and judder symptoms. Some 8WDCTs (indicated by a new part number) received an updated clutch spring. The correct TCU software update must be matched with the correct corresponding 8WDCT hardware, otherwise, drivability concerns may occur. This service procedure should be performed prior to any 8WDCT replacements done for drivability/judder concerns. |
|---|---|
| 26-AT-001H TSB | 2026-03-11. Service bulletin. Some Santa Cruz (NXT), Santa Fe (TMA, MX5A), and Sonata (DN8A) models may require replacement of the 8-speed wet dual clutch transmission (8WDCT) when the vehicle sets one of the high pressure electric oil pump (HP EOP) DTCs listed below. This bulletin provides instructions to replace the 8WDCT. |
| 25-01-071H/072H DCS | 2025-10-14. Service campaign. Certain Santa Fe (MX5A) and Santa Cruz (NXT) vehicles equipped with 8-speed dual clutch transmissions (8DCT) may set one of the high pressure electric oil pump (HP EOP) DTCs listed below. Technical Service Bulletins (TSB) 25-01-071H (for Santa Fe vehicles) and 25-01-072H (for Santa Cruz vehicles) provide the service procedure to update the Transmission Control Unit (TCU) with improved logic to address these DTCs and enhance operation of the 8DCT. |