# Service bulletin 08\-123\-25 REV. B

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: 11020829
- Published by NHTSA: 2025\-07\-23
- Manufacturer's number: 08\-123\-25 REV. B
- Manufacturer's date: 2025\-07\-16
- NHTSA component: SEATS

## NHTSA's summary

NOTE: Does not apply to vehicles built for US Market. Lumbar Seat Inoperable Customers may experience the following: ● All lumbar seat controls inoperable. This bulletin involves updating the radio software level from 31.42 to U35.26.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11020829-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11020829-9999.pdf)

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

## Components

Seats

## Vehicles listed

- 2025 RAM 1500

## Recalls for the same vehicles and component

- [2026371](/recalls/tc/2026371.md), 2026-07-30: Seats And Restraints

## Other bulletins for the same vehicles and component

- [9100855](/bulletins/11035061.md), 2026-07-18, Service bulletin: SEATS; ELECTRICAL SYSTEM. 2 WAY LUMBAR SWITCH If the Driver Seat Lumbar Support is inoperative, stuck, or not responding as expected, obtain the following information from the customer prior to replacing the lumbar switch: 1.Which lumbar function is not operating properly? \-Inflate \(Extend\) \-Deflate \(Retract\) \-Both directions 2.Is the concern constant or intermittent? 3.If intermittent, how often does it occur? \-Daily \-Weekly \-Randomly 4.Is the lumbar support stuck in the extended or retracted position? \-Extended \-Retracted \-Neither 5.Does the lumbar support respond after pressing the switch multiple times? \-Yes / No 6.Does the concern occur only while driving, only at key\-on, or while the vehicle is parked? 7.Has the concern occurred after the vehicle has been sitting for an extended period \(overnight or several hours\)? \-Yes / No 8.Is the lumbar switch physically sticking or binding in either direction? \-Yes / No 9.Has the lumbar switch, seat assembly, or lumbar support assembly been previously repaired or replaced? \-Yes / No Before replacing the lumbar switch, verify proper power and ground, connector engagement, wiring integrity, and inspect for damaged harnesses, disconnected components, or signs of physical damage/abuse. If no external issues are identified, verify lumbar motor operation and related circuits prior to replacing the lumbar switch.
- [S2623000025](/bulletins/11031470.md), 2026-04-22, Service bulletin: SEATS. Front Seat Massage Function Inoperative.
- [S2608000015](/bulletins/11030266.md), 2026-03-25, Service bulletin: ELECTRICAL SYSTEM; SEATS. Memory Seat Does Not Work There Is No Response from The Seat While Pressing the Memory Seat Profiles from the Switch Diagnostic Trouble Code \(DTC\) B1D9B\-54\- Seat Horizontal Front Stop Not Learned\-Missing Calibration
- [S2624000003 REV.A](/bulletins/11030046.md), 2026-03-13, Service bulletin: ELECTRICAL SYSTEM; SEATS. Heated Seats Shutting Off Prematurely
- [110627](/bulletins/11030028.md), 2026-03-13, Service bulletin: SEATS. PANEL \- FRONT SEAT BACK
- [S2624000003](/bulletins/11029778.md), 2026-03-05, Service bulletin: ELECTRICAL SYSTEM; SEATS. Note: error in document release number, should be S2624000003. Heated Seats Shutting Off Prematurely
- [S2508000107](/bulletins/11026642.md), 2025-12-17, Service bulletin: SEATS. Comfort Seat Module \(CSM\) or Comfort Steering Wheel Module \(CSWM\) do Not Operate
- [08\-123\-25 REV.A](/bulletins/11018106.md), 2025-05-07, Service bulletin: SEATS. Lumbar Seat Inoperable Customers may experience the following: ● All lumbar seat controls inoperable. This bulletin involves updating the radio software level from 31.42 to U35.26.
- [08\-123\-25](/bulletins/11017367.md), 2025-04-30, Service bulletin: SEATS; ELECTRICAL SYSTEM. "Lumbar Seat Inoperable Customers may experience the following: ● All lumbar seat controls inoperable. This bulletin involves updating the radio software level from 31.42 to U35.26."
- [S2408000048 REV.A](/bulletins/11001003.md), 2024-06-05, Service bulletin: SEATS. Comfort Seat Module \(CSM\) or Comfort Steering Wheel Module \(CSWM\) do Not Operate After a Recent Module Replacement

JSON: [/v1/bulletins/11020829](/v1/bulletins/11020829)

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