B2577 on the 2026 Ram 1500
The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.
This code is specific to a manufacturer and is not described here. Its meaning is in the manufacturer's service information.
| 08-187-26 REV. B | 2026-07-08. Service bulletin. 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 |
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| 08-187-26 REV. A | 2026-06-03. Service bulletin. Flash: Door Control Module (DCM) Updates Technician may find the following Diagnostic Trouble Code (DTC): ● 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 |
| 08-187-26 | 2026-05-06. Service bulletin. Door Control Module (DCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set the following Diagnostic Trouble Code (DTC): ● B2577-00 - Window Not Calibrated / Lost Calibration. Customers may experience one or more of the following: ● Power windows are inoperative and will not respond to switch inputs.. ● Driver and passenger window auto up/down functions inoperative. This bulletin involves inspecting and possibly reprogramming the DDM and PDM with the latest available software. |
| 08-303-25 | 2025-09-24. Service bulletin. Door Control Module (DCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set the following Diagnostic Trouble Code (DTC): ● B2577-00 - Window Not Calibrated / Lost Calibration. Customers may experience one or more of the following: ● Power windows are inoperative and will not respond to switch inputs.. ● Driver and passenger window auto up/down functions inoperative |
4 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.