Global Telematics Box Module Over The Air Update from R5N to R5T TBM2.H Software Version (FOTA) This...
Ram technical service bulletin OTHERDOC_146 for 2025-2026 Ram 1500.
- Bulletin number
- OTHERDOC_146
- Component
- Electrical system
- Summary
- Global Telematics Box Module Over The Air Update from R5N to R5T TBM2.H Software Version (FOTA) This bulletin applies to vehicles equipped with a Global Telematics Box Module (TBM) (Sales Code RDG) Customers may experience one or more of the following: - Error display of "Uconnect Box Requires Service/Wifi Unavailable" pop ups; [ TBM DTC B22A9-96 Internal Performance Failure ]. - Error display of "Uconnect Box Requires Service" pop ups; [ TBM DTCs B1560, B1561, B1562 - Antenna loose connection ]. - TBM sleep mode not working causing battery drain in some cases.
Owners of these vehicles have filed 250 complaints in the electrical category.
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