# Service bulletin CALFTL54\-034

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: 11021177
- Published by NHTSA: 2025\-08\-01
- Manufacturer's number: CALFTL54\-034
- Manufacturer's date: 2025\-07\-09
- NHTSA component: ELECTRICAL SYSTEM

## NHTSA's summary

Revised Customer Advisory Letter for ICUC Internal Speaker Software Update

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11021177-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11021177-9999.pdf)

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

## Components

Electrical system

## Vehicles listed

- 2024 to 2025 FREIGHTLINER CASCADIA

## Other bulletins for the same vehicles and component

- [CXA 09\_26\_CTP3 Antenna](/bulletins/11038013.md), 2026-10-05, Other: ELECTRICAL SYSTEM. CX Advocate for CTP3 Antenna Bluetooth Communication Issue \(SF736\)
- [SF736\-OWN LTR](/bulletins/11035545.md), 2026-08-03, Service campaign: ELECTRICAL SYSTEM. Field Service campaign for Cascadia CTP3 Antennas
- [SF736\-DLR LTR](/bulletins/11035544.md), 2026-08-03, Service campaign: ELECTRICAL SYSTEM. Field Service campaign for Cascadia CTP3 Antennas
- [SF736\-Bulletin](/bulletins/11035534.md), 2026-08-03, Service campaign: ELECTRICAL SYSTEM. Field Service campaign for Cascadia CTP3 Antennas
- [SS 3175\-FTL](/bulletins/11031986.md), 2026-05-02, Other: ELECTRICAL SYSTEM. Service Solution for Progressive Low Voltage Disconnect Parameter Update
- [FleetCom 1\_Starter](/bulletins/11031967.md), 2026-05-02, Other: ELECTRICAL SYSTEM. Fleet Communications for starter issues
- [FleetCom 1\_Solenoid](/bulletins/11031966.md), 2026-05-02, Other: ELECTRICAL SYSTEM. Fleet Communications for solenoid issues
- [FleetCom\_ECU Faults](/bulletins/11028287.md), 2026-02-05, Other: ELECTRICAL SYSTEM. Fleet Communications for Intermittent Connections and ECU Fault Codes
- [FleetCom\_ECU Faults](/bulletins/11027492.md), 2026-01-08, Other: ELECTRICAL SYSTEM. Fleet Communications for Corrosion Protecton/Glyptal Application
- [FleetCom\_SS 3174\-FTL](/bulletins/11026469.md), 2025-12-06, Other: ELECTRICAL SYSTEM. Fleet Communication for SS 3174\-FTL

JSON: [/v1/bulletins/11021177](/v1/bulletins/11021177)

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