RAM 1500 2023 — technical service bulletin
Bulletin 08-381-25 REV. B · NHTSA communication 11026783 · issued Dec 17, 2025
Technical service bulletin
communication type
Electrical System
component
2023
model years
1
vehicle entries
Official summary
Telematics Box Module (TBM) Software Updating From 5.39 To 5.65 Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set the following Diagnostic Trouble Code (DTC): ● B2206-00 - Current VIN Missing / Mismatch. Customers may experience the following: ● SOS Unavailable message pops up on radio during a remote start event due to TBM DTC B2206-00 This bulletin involves updating the TBM to the latest software level in the case that the FOTA did not function.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.