RAM
08-305-26
Manufacturer communications
- Publication date
- 2026-08-01
- Received by NHTSA
- 2026-08-06
- NHTSA record numbers
- 11035978
Manufacturer summary
Original wording in English
Flash: Brake System Control Module (BSCM) Updates **Customers may experience one or more of the following: SYMPTOM:
• Warning message "Selec-Speed Unavailable" appears in the Instrument Panel Cluster (IPC) when trying to enable the Selec-Speed Control (SSC) function. NOTE: There will be no Diagnostic Trouble Codes (DTCs) and no driveability concerns with this symptom.**
• Anti-Lock Brake System (ABS), Electronic Stability Control (ESC) and 'Decel ACC' lights on in the IPC. Technicians may also find the following:
• DTC C121A-00 - Steering Angle Sensor Not Initialized - Is stored with no Malfunction Indicator Lamp (MIL). This bulletin involves reprogramming the BSCM with the latest available software.
• Warning message "Selec-Speed Unavailable" appears in the Instrument Panel Cluster (IPC) when trying to enable the Selec-Speed Control (SSC) function. NOTE: There will be no Diagnostic Trouble Codes (DTCs) and no driveability concerns with this symptom.**
• Anti-Lock Brake System (ABS), Electronic Stability Control (ESC) and 'Decel ACC' lights on in the IPC. Technicians may also find the following:
• DTC C121A-00 - Steering Angle Sensor Not Initialized - Is stored with no Malfunction Indicator Lamp (MIL). This bulletin involves reprogramming the BSCM with the latest available software.
Reported code forms
Manufacturer wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
Ram
C121A-00Steering Angle Sensor Not Initialized - Is stored with no Malfunction Indicator Lamp (MIL)Check vehicle applicability
A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Ram | 1500 | 2025 |