# Service bulletin SBW54\-074REV

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: 10172742
- Published by NHTSA: 2020\-03\-25
- Manufacturer's number: SBW54\-074REV
- Manufacturer's date: 2020\-03\-25
- NHTSA component: STEERING; ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.

## NHTSA's summary

Revision for Service Bulletin for Western Star 5700 Pana\-Pacific 540 Radio Controls Not Operating Normally. This bulletin replaces the version dated 02/07/2020. Pana\-Pacific DEA540 radios \(A22\-74389\-000, A22\-77161\-000\) may cease to respond to volume control settings from the steering wheel switches or the controls on the radio faceplate, resulting in erratic volume control. Information about the firmware version this SB applies to has been included, the 4700 was added to the model list, and part numbers have been corrected.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10172742-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10172742-9999.pdf)

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

## Components

Electrical system, Equipment and accessories, Steering, Software

## Vehicles listed

- 2020 WESTERN STAR 4700
- 2020 WESTERN STAR 5700

## Other bulletins for the same vehicles and component

- [20TS\-07](/bulletins/10181369.md), 2020-10-21, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ENGINE AND ENGINE COOLING. Technical Service Letter for Cold Weather Faults on GHG17/21 DD13 with MCM Software Version 14. Due to colder weather, there may be an increase in the frequency of faults, noted below, on GHG17/21 DD13 trucks built after June 5th 2019. This is due to a calibration issue in the current MCM software \(14.1.1.5 or 14.2.1.3\). New software is scheduled for release in the first quarter of 2021 that will address these faults.
- [17TS\-05REV2](/bulletins/10181368.md), 2020-10-21, Service bulletin: POWER TRAIN; ELECTRICAL SYSTEM:SOFTWARE. Revised Technical Service Letter for Detroit DT12 TCM GHG17 Only; Bootloader Update. On Detroit DT12 equipped vehicles, it may be necessary to complete an additional step in the programming process when updating the TCM software.
- [20CSA\-03](/bulletins/10172136.md), 2020-03-06, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. Customer Service Announcement saying that Service Pack \(SP\) 2 for Diagnostic Link 8.11 Standard and Professional will be available for download from the Detroit Diesel server.

JSON: [/v1/bulletins/10172742](/v1/bulletins/10172742)

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