Global Telematics Box Module (TBM) Firmware Over The Air (FOTA) Update Customers must experience a...
Jeep technical service bulletin 08-198-26 for 2026 Jeep Grand Cherokee, 2026 Jeep Grand Cherokee L and 2026 Jeep Grand Cherokee 4xe.
- Bulletin number
- 08-198-26
- Component
- Electrical system
- Summary
- Global Telematics Box Module (TBM) Firmware Over The Air (FOTA) Update Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● B22A9-96 ECU Internal Performance-Component Internal Failure. ● B1560-11 Cellular Antenna 1 - Short To Ground. ● B1560-13 Cellular Antenna 1 - Circuit Open. ● B1561-11 Cellular Antenna 2 - Short To Ground. ● B1561-13 Cellular Antenna 2 - Circuit Open. ● B1562-14 GPS Antenna Short To Ground Or Open. Customers may also experience the following: ● "Uconnect Box Required Service" message in Radio Display. This bulletin provides information regarding the latest Firmware Over The Air (FOTA) update and provides the service technician an overview of the steps a customer will need to take to complete the update. The TBM software will be updated from R5C1, R5M2 or R5R to R5T software level.
Owners of these vehicles have filed 9 complaints in the electrical category.
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