RAM 1500 2025 — technical service bulletin
Bulletin 08-195-26 REV. B · NHTSA communication 11034894 · issued Jun 30, 2026
Technical service bulletin
communication type
Electrical System
component
2025
model years
1
vehicle entries
Official summary
Flash: Door Control Module (DCM) Updates Technician may find the following Diagnostic Trouble Code (DTC): SYMPTOM: ● B2577-00 - Window Not Calibrated / Lost Calibration.** Customers may experience one or more of the following: ● Driver and passenger window 'auto up' function is inoperative. This bulletin involves inspecting and possibly reprogramming the DDM and PDM with the latest available software
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.