Technical Service Bulletin TDF-TDFA-TDFB DCS — 2025 HYUNDAI TUCSON
ELECTRICAL SYSTEM
Bulletin Details
| TSB ID | TDF-TDFA-TDFB DCS |
| Manufacturer | |
| Vehicle | 2025 HYUNDAI TUCSON |
| Component | ELECTRICAL SYSTEM |
| Communication Date |
Bulletin Summary
Certain Tucson Hybrid (NX4 HEV), Tucson Plug-in Hybrid (NX4 PHEV), Tucson (NX4), and Tucson (NX4M) vehicles may exhibit a Data Communication Unit (DCU) software error due to the internal timer initialization logic not being implemented. The DCU module may shut down telematics services after one year. Technical Service Bulletins (TSBs) 25-01-057H-1, 25-01-059H-1 & 25-01-060H-1 provide instructions to perform a software update for the DCU module. Over-the-Air (OTA): This update can also be conducted via OTA. The customer can complete on his/her own if he/she has an active subscription to Hyundai Bluelink. A visit to the dealership is not required.
About Technical Service Bulletins
A Technical Service Bulletin (TSB) is a document issued by a vehicle manufacturer to its dealers, describing a known issue with a specific vehicle or set of vehicles and the recommended procedure to fix it. Unlike recalls, TSBs are not mandatory and are typically only performed if an owner reports the related issue. However, TSBs can be an indicator of common problems with a vehicle.
Other TSBs for the 2025 HYUNDAI TUCSON
26-BE-003H TSB
UNKNOWN OR OTHER
25-01-061H-1 TSB
ELECTRICAL SYSTEM
25-01-059H-1 TSB
ELECTRICAL SYSTEM
25-01-060H-1 TSB
ELECTRICAL SYSTEM
25-01-060H DCS
ELECTRICAL SYSTEM
25-01-061H TSB
ELECTRICAL SYSTEM
25-01-059H TSB
ELECTRICAL SYSTEM
25-01-060H TSB
ELECTRICAL SYSTEM
HCE25-92-E770 TSB
ELECTRICAL SYSTEM
25-01-32H TSB
ELECTRICAL SYSTEM