2019-2026 Stellantis Uconnect Box Battery Service DTC B1E21-96

Owners of various 2019-2026 Stellantis vehicles may encounter a specific warning message on their radio display: "Battery of Uconnect Box requires service. SOS call and related functions may be unavailable. Please visit an authorized dealer." This message is typically accompanied by the diagnostic trouble code (DTC) B1E21-96, indicating an internal failure of the backup battery within the Telematics Box Module (TBM). This issue affects the functionality of the Uconnect system, potentially impacting critical safety features like SOS calls.

This manufacturer communication, identified as 9100734, provides guidance for technicians on correctly diagnosing and resolving this specific problem, ensuring proper repair and restoration of Uconnect services. Addressing this issue promptly is important for maintaining the full functionality of your vehicle's telematics system.

Symptoms

Vehicle owners will primarily notice a specific popup message displayed on the radio or infotainment screen. This message clearly states:

• "Battery of Uconnect Box requires service. SOS call and related functions may be unavailable. Please visit an authorized dealer."

This warning indicates a problem with the Uconnect system's power supply, which can affect its ability to perform emergency calls and other connected services.

Fault Codes / DTCs

The primary diagnostic trouble code associated with this issue is:

• B1E21-96: Backup Battery-Component Internal Failure

This code specifically points to a malfunction within the backup battery component of the Telematics Box Module (TBM).

Diagnosis and Trigger Conditions

This issue is confirmed when the DTC B1E21-96 is actively present in the vehicle's system, and the customer reports seeing the specific "Battery of Uconnect Box requires service" popup message on the radio. Technicians should verify both conditions before proceeding with any repairs.

Repair Procedure Summary

The correct repair for this condition involves replacing the internal battery of the Telematics Box Module (TBM). It is crucial to understand that the entire TBM module should not be replaced. The manufacturer communication 9100734 explicitly states that only the internal battery needs to be swapped out to resolve the B1E21-96 fault and the associated warning message. This targeted repair prevents unnecessary replacement of the entire module.

Required Parts

To address the "Stellantis Uconnect battery service" issue, the following part is required:

• Part Number: 68493347 (Backup TBM Battery)

This part number corresponds to the specific internal battery designed for the Telematics Box Module.

Important Warnings

Owners and technicians should be aware of a critical instruction from the manufacturer:

• "PLEASE do not Replace the TBM module, only replace TBM Internal Battery (inside Telematics Box Module) and order PN68493347"

This warning emphasizes that replacing the entire Telematics Box Module is an incorrect and unnecessary repair for DTC B1E21-96. Focusing solely on replacing the internal battery is the prescribed solution.

Owner Action

If you experience the "Battery of Uconnect Box requires service" message or suspect a problem with your Stellantis Uconnect battery service, it is recommended to visit an authorized dealer. They have the necessary diagnostic tools and the correct replacement part (PN 68493347) to perform the specific internal battery replacement for the Telematics Box Module, ensuring your Uconnect system functions properly.

Source: NHTSA ID 11026660