# B1E21 on the 2022 Ram 4500

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.

## Bulletins for this model year that name B1E21

- [11026677](https://open.wenmarpro.com/bulletins/11026677), 2025-12-17: Telematics Box Module \(TBM\) Backup Battery Replacement When DTC B1E21 Is Present Technicians may experience a Malfunction Indicator Lamp \(MIL\) illumination and the vehicle may exhibit/set the following Diagnostic Trouble Code \(DTC\): ● B1E21\-96 \- Backup Battery Component Internal Failure.
- [11026660](https://open.wenmarpro.com/bulletins/11026660), 2025-12-17: If the DTC B1E21\-96: Backup Battery\-Component Internal Failure is active and customer states Popup message will show at the radio: "Battery of Uconnect Box requires service. SOS call and related functions may be unavailable. Please visit an authorized dealer." PLEASE do not Replace the TBM module, only replace TBM Internal Battery \(inside Telematics Box Module\) and order PN68493347
- [11026549](https://open.wenmarpro.com/bulletins/11026549), 2025-12-11: Telematics Box Module \(TBM\) Backup Battery Replacement When DTC B1E21 Is Present echnicians may experience a Malfunction Indicator Lamp \(MIL\) illumination and the vehicle may exhibit/set the following Diagnostic Trouble Code \(DTC\): ● B1E21\-96 \- Backup Battery Component Internal Failure
- [10236857](https://open.wenmarpro.com/bulletins/10236857), 2023-05-30: Uconnect Box Error Message With Active Or Stored Diagnostic Trouble Codes \(DTC\) B22A9\-96, B1570\-93, B1E21\-96