# Service bulletin S2121000010

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: 10221587
- Published by NHTSA: 2022\-09\-26
- Manufacturer's number: S2121000010
- Manufacturer's date: 2021\-07\-01
- NHTSA component: POWER TRAIN:AXLE ASSEMBLY

## NHTSA's summary

Service 4WD Lamp On, 4WD System Does Not Work, 4WD Service Lamp Flashing, Front Axle Disconnect Does Not Engage Or Disengage

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10221587-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10221587-9999.pdf)

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

## Components

Transmission and driveline, Axle

## Vehicles listed

- 2019 to 2021 RAM 2500
- 2019 to 2021 RAM 3500
- 2019 to 2021 RAM 4500
- 2019 to 2021 RAM 5500

## Other bulletins for the same vehicles and component

- [S2121000010](/bulletins/10223458.md), 2022-10-17, Service bulletin: POWER TRAIN:AXLE ASSEMBLY. Service 4WD Lamp On, 4WD System Does Not Work, 4WD Service Lamp Flashing, Front Axle Disconnect Does Not Engage Or Disengage

JSON: [/v1/bulletins/10221587](/v1/bulletins/10221587)

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