Home08-394-25 REV. A · ALFA ROMEO, CHRYSLER, DODGE, JEEP, RAM
ALFA ROMEO, CHRYSLER, DODGE, JEEP, RAM

08-394-25 REV. A

Manufacturer communications

Publication date
2025-12-12
Received by NHTSA
2025-12-17
NHTSA record numbers
11026677

Manufacturer summary

Original wording in English

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.

NHTSA manufacturer communications ↗

Reported code forms

B1E21

Manufacturer wording

Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.

Check vehicle applicability

A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.

MakeModelModel year
JeepWAGONEER S2025
JeepWAGONEER S2024
JeepWRANGLER2026
JeepWRANGLER2025
JeepWRANGLER2024
JeepWRANGLER2023
JeepWRANGLER2022
JeepWRANGLER 4XE2026
JeepWRANGLER 4XE2025
JeepWRANGLER 4XE2024
JeepWRANGLER 4XE2023
JeepWRANGLER 4XE2022
Ram15002026
Ram15002025
Ram15002024
Ram15002023
Ram15002022
Ram25002026
Ram25002025
Ram25002024
Ram25002023
Ram25002022
Ram35002026
Ram35002025
Ram35002024
Ram35002023
Ram35002022
Ram45002026
Ram45002025
Ram45002024

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