RAM 2500 2023 — technical service bulletin
Bulletin 08-383-25 · NHTSA communication 11025719 · issued Nov 22, 2025
Technical service bulletin
communication type
Electrical System
component
2023
model years
4
vehicle entries
Official summary
Telematics Box Module (TBM) Firmware Over The Air (FOTA) Software Updating from 5.39 to 5.65 Customers may experience the following: ● No connectivity. This bulletin involves flashing 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.