Dodge Durango 2021–2024 — technical service bulletin
Bulletin 08-294-26 · NHTSA communication 11035317 · issued Jul 25, 2026
Technical service bulletin
communication type
Electrical System
component
2021–2024
model years
4
vehicle entries
Official summary
Telematics Box Module (TBM) Firmware Over The Air Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set the following Diagnostic Trouble Codes (DTCs): ● B22A9-00 - ECU Internal Performance. ● B1560-13 - Cellular Antenna 1-Circuit Open. ● B1561-13 - Cellular Antenna 2-Circuit Open. ● B1562-12 - GPS Antenna-Circuit Short To Battery. Customers may also comment on the following: ● "Uconnect Box Requires Service" message in the display screen module.
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.