# Service bulletin S2508000041

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 11018619
- Published by NHTSA: 2025\-05\-28
- Manufacturer's number: S2508000041
- Manufacturer's date: 2025\-05\-27
- NHTSA component: SERVICE BRAKES
- Manufacturer's system: Switch Bank Auxilary

## NHTSA's summary

Auxiliary Switch Bank Is Inoperative Discussion: Some customers may state that the lower switch bank is inop. This includes the Tow/Haul, Exhaust Brake, Alt Trailer Height and all Aux Switches. The issue may be due to having the incorrect part number switch installed in the vehicle at the assembly plant. If the technician is working on a vehicle with this condition, please remove the switch bank and inspect the part number. If the part number is 68597575AA or 68578995AA, this is the incorrect switch part number for the vehicle. AA level parts are only compatible with 24 model year and older vehicles. Please replace the switch bank with and AB level part \(68597575AB, 68578995AB\)

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11018619-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11018619-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Brakes

## Vehicles listed

- 2025 RAM 2500
- 2025 RAM 3500

## Other bulletins for the same vehicles and component

- [S2523000055 REV.D](/bulletins/11034387.md), 2026-07-02, Service bulletin: POWER TRAIN; SERVICE BRAKES. Mil\-On/Check Engine Lamp \(CEL\), Antilock Brake System \(ABS\) Lamp, Diagnostic Trouble Code \(DTCs\).
- [S2523000055 REV.C](/bulletins/11033304.md), 2026-06-03, Service bulletin: ENGINE; SERVICE BRAKES. Mil\-On/Check Engine Lamp \(CEL\), Antilock Brake System \(ABS\) Lamp, Diagnostic Trouble Code \(DTCs\).
- [03D Campaign](/bulletins/11029785.md), 2026-03-05, Other: SERVICE BRAKES; ELECTRICAL SYSTEM. Fleet Campaign Parts Ordering Process \(03D\)
- [110082](/bulletins/11028785.md), 2026-02-12, Service bulletin: SERVICE BRAKES; ELECTRICAL SYSTEM. MODULE \- TRAILER BRAKE \& TOWING CONTROL
- [08\-021\-26](/bulletins/11028220.md), 2026-02-04, Service bulletin: ELECTRICAL SYSTEM; SERVICE BRAKES. Flash: Central ADAS Decision Module \(CADM\) Updates Customers must experience a Malfunction Indicator Lamp \(MIL\) illumination and the vehicle must exhibit/set at least one of the following Diagnostic Trouble Codes \(DTCs\): ● C2203\-00 \- Current VIN Missing/Mismatch. ● C008E\-00 \- ECU Internal Performance with Environmental Data Decode Byte: APP\_FATAL\_ERROR\_APP\_CONFIGURATION\_ERROR\_FAULT. Customers may also comment on one or more of the following: ● The Instrument Panel Cluster \(IPC\) is displaying one or more of the following messages: ○ "ACC/FCW Unavailable Service Required". ○ "ACC/FCW Limited Functionality". ○ "Active Lane Management Limited Functionality." ○ "Active Lane Management Unavailable Service Required". ○ "Automatic Emergency Braking \(AEB\) Limited Service Required". ○ "AEB Unavailable Service Required". ○ "Blindspot Detection Unavailable Service Required" ○ "Blindspot Detection Limited Functionality" ● Customer states that the ADAS features are disabled. This bulletin involves reprogramming of the CADM with the latest available software and possibly performing a Forward Facing Camera \(FFC\) Dynamic Service Alignment / Calibration procedure. J08 FSAR\-TSB\-6774 \-2\-
- [S2505000003](/bulletins/11026634.md), 2025-12-17, Service bulletin: SERVICE BRAKES. Diagnostic Trouble Code \(DTC\) C0050\-00\-Brake System Hydraulic Leak Set After Recent Repair.
- [S2508000098](/bulletins/11025035.md), 2025-11-05, Service bulletin: SERVICE BRAKES. Auto Emergency Braking Unavailable/Service Required Message on Cluster
- [S2523000055 REV.A](/bulletins/11024618.md), 2025-10-29, Service bulletin: SERVICE BRAKES. Mil\-On/Check Engine Lamp \(CEL\), Antilock Brake System \(ABS\) Lamp, Diagnostic Trouble Code \(DTCs\).
- [S2508000090](/bulletins/11024614.md), 2025-10-29, Service bulletin: ELECTRICAL SYSTEM; SERVICE BRAKES. Brakes Appear to Drag After Setting Trailer Brake Feature in the Radio Settings
- [S2508000075 REV.A](/bulletins/11023626.md), 2025-10-02, Service bulletin: SERVICE BRAKES. Integrated Trailer Brake \(ITB\) Switch Removal

JSON: [/v1/bulletins/11018619](/v1/bulletins/11018619)

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