2022-2025 Jeep/RAM Uconnect Box Service TSB S228A000005

Owners of certain 2022-2025 Jeep and RAM vehicles may encounter a persistent "Uconnect Box Requires Service" message on their radio screen. This issue, detailed in Stellantis TSB S228A000005-Rev. E, is typically linked to active or stored diagnostic trouble codes (DTCs) indicating an open or short circuit in the cellular or GPS antenna systems. The message will appear every time an antenna open or short DTC is set.

Symptoms

The primary symptom is the appearance of the message "Uconnect Box Requires Service" on the vehicle's radio display. This message typically appears upon vehicle startup and will remain visible until the ignition is turned off or the customer manually closes the pop-up. Technicians using the wiTECH diagnostic tool will also observe one or more active or stored Diagnostic Trouble Codes (DTCs) related to the cellular or GPS antenna systems.

Fault Codes / DTCs

This TSB specifically addresses the following diagnostic trouble codes:

Code	Description
B1560-11	Cellular Antenna 1: Circuit Short to Ground
B1560-13	Cellular Antenna 1: Circuit Open or Short to Battery
B1561-11	Cellular Antenna 2: Circuit Short to Ground
B1561-13	Cellular Antenna 2: Circuit Open or Short to Battery
B1562-11	GPS Antenna-Circuit Short to Ground
B1562-12	GPS Antenna-Circuit Short to Battery
B1562-13	GPS Antenna-Circuit Open
B1570-93	USB Communication - No operation

Diagnosis / Trigger Conditions

The "Uconnect Box Requires Service" message is directly triggered by the setting of an antenna open or short DTC. Diagnosis involves checking the software versions of the Telematics Box Module (TBM) and the radio to ensure they are up to date. Technicians must also determine the physical location of the cellular antennas (Cell 1, typically a roof antenna; Cell 2, an IP antenna) and the GPS antenna. The document includes diagrams such as Figure 2, which illustrates FAKRA connector locations on the TBM, and Figure 4, which provides an example of the antenna wiring.

Important Warnings for Technicians and Owners

Stellantis has issued specific warnings to prevent unnecessary repairs and ensure proper diagnosis:

• "Prior to replacing any antennas, unplug and replug each connection ONE AT A TIME. On both sides (antenna, coax cable inline connections [Body/IP harness] and TBM). Use caution when handling connectors to not cause damage."
• "DO NOT REPLACE ANY ANTENNA without an antenna ACTIVE DTC. Active antenna DTC must follow antenna service diagnostic procedure for that DTC in Service Library."

Repair Procedure Summary

The repair procedure outlined in TSB S228A000005-Rev. E focuses on thorough inspection and diagnostic steps before antenna replacement. Key steps include:

1. Software Update Check: Verify that the Telematics Box Module (TBM) and radio software are current.
2. Antenna Location: Identify the physical locations of Cellular Antenna 1 (roof), Cellular Antenna 2 (IP), and the GPS antenna.
3. Harness and Connector Inspection: Carefully check for harness continuity, cable pinches, damage to connectors, proper coax cable lengths (ensuring no tension), bent terminals, or pushed-out terminals. Figure 3 provides examples of damaged or missing connector housings.
4. Reconnection and Reset: Plug all vehicle connections back in, perform an ECU reset, and erase any stored DTCs.
5. DTC Status Check: Turn the ignition off for at least 10 seconds, then turn it back on and wait a minimum of 6 minutes to observe if the DTC status changes from Active to Stored.
6. Active Cell DTC: If the "Uconnect Box Requires Service" message returns with an Active Cell DTC, follow the specific antenna service diagnostic procedure detailed in the Service Library.
7. Stored Cell DTC: If the message returns with a Stored Cell DTC, the issue is likely intermittent harness connections, not an antenna fault. Further investigation into harness connections is required.
8. No Antenna DTC: If the message returns with no antenna DTC, drive the vehicle outside for 5-6 minutes to ensure proper cellular coverage. If the message persists, follow the TBM diagnostics procedure, as it is not an antenna issue.

Required Tools or Parts

For diagnosing active cellular antenna DTCs, the following specialized tools and cables may be necessary:

• 9977-6-CELL-LTE Cell Antenna Test Kit
• 9977-6-9 RG-58 Coax Cable
• 977-6-13 RG-58 Coax Cable (longer length)

Owner Action

If your 2022-2025 Jeep or RAM vehicle displays the "Uconnect Box Requires Service" message, it is recommended to schedule an appointment with an authorized dealer. The dealer will follow the diagnostic steps outlined in TSB S228A000005-Rev. E to accurately identify the root cause, whether it's a software issue, a faulty connection, or an antenna problem. Do not attempt to replace antennas yourself without proper diagnosis, as this may not resolve the issue and could lead to further complications.

NHTSA ID: 11014337