# Service bulletin 08\-294\-26

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 11035317
- Published by NHTSA: 2026\-07\-29
- Manufacturer's number: 08\-294\-26
- Manufacturer's date: 2026\-07\-25
- NHTSA component: ELECTRICAL SYSTEM

## NHTSA's 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.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11035317-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11035317-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Electrical system

## Trouble codes named

B1560, B1561, B1562, B22A9

## Vehicles listed

- 2021 to 2024 DODGE DURANGO

## Other bulletins for the same vehicles and component

- [9100900](/bulletins/11037346.md), 2026-09-17, Service bulletin: ELECTRICAL SYSTEM; STRUCTURE:BODY. Passive Entry O/S Dr Handle Prior to replacing an inoperative passive entry door handle, perform Star Online S2623000040.
- [113803](/bulletins/11036166.md), 2026-08-13, Service bulletin: ENGINE; ELECTRICAL SYSTEM. HOSE AND TUBE \- HEATER SUPPLY AND RETURN
- [08\-290\-26](/bulletins/11035314.md), 2026-07-29, Service bulletin: ELECTRICAL SYSTEM. Flash: Radio Frequency Hub Module \(RFHM\) Updates The following software enhancements are available: SYMPTOM: ● Update to the RFHM software to prevent unauthorized key fob programming. This bulletin updating the RFHM with the latest available software.
- [S2508000025 REV. B](/bulletins/11034926.md), 2026-07-08, Service bulletin: ELECTRICAL SYSTEM. Instrument Panel Cluster \(IPC\) and Radio Compass Display has Dashes \(\-\-\)
- [113153](/bulletins/11034915.md), 2026-07-08, Service bulletin: ELECTRICAL SYSTEM; ENGINE. THERMOSTAT – NONE.
- [113152](/bulletins/11034914.md), 2026-07-08, Service bulletin: ELECTRICAL SYSTEM; ENGINE. THERMOSTAT – NONE.
- [08\-256\-26](/bulletins/11034896.md), 2026-07-08, Service bulletin: ELECTRICAL SYSTEM. Uconnect® Screen Turns Blank Or Black Customers may experience the following: SYMPTOM: ● The Uconnect® screen display goes blank/black at times.
- [S2508000025 REV.A](/bulletins/11034390.md), 2026-07-02, Service bulletin: ELECTRICAL SYSTEM. Instrument Panel Cluster \(IPC\) and Radio Compass Display has Dashes \(\-\-\)
- [S2623000041 REV.A](/bulletins/11034351.md), 2026-07-02, Service bulletin: STRUCTURE:BODY; ELECTRICAL SYSTEM. Power Liftgate Intermittently Inoperative. Will Not Open/ Close. Liftgate/Hatch Ajar Message Displayed. Rev A
- [S268A000014](/bulletins/11034346.md), 2026-07-02, Service bulletin: ELECTRICAL SYSTEM. Radio/ETM is Adding Approximately 27mA Draw to Vehicle When in Logistics Mode

JSON: [/v1/bulletins/11035317](/v1/bulletins/11035317)

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