# Service bulletin TechTalk566681

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: 10194820
- Published by NHTSA: 2021\-06\-02
- Manufacturer's number: TechTalk566681
- Manufacturer's date: 2021\-05\-05
- NHTSA component: ELECTRICAL SYSTEM

## NHTSA's summary

Tech Talk Discussion No comms with CPC, MCM or ACM

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10194820-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10194820-9999.pdf)

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

## Components

Electrical system

## Vehicles listed

- 2020 WESTERN STAR 5700

## Recalls for the same vehicles and component

- [2021172](/recalls/tc/2021172.md), 2021-03-24: Electrical
- [21V206000](/recalls/nhtsa/21V206000.md), 2021-03-24: ELECTRICAL SYSTEM:WIRING
- [2020217](/recalls/tc/2020217.md), 2020-05-18: Electrical
- [20V281000](/recalls/nhtsa/20V281000.md), 2020-05-18: ELECTRICAL SYSTEM:WIRING

## Other bulletins for the same vehicles and component

- [SBW54\-080](/bulletins/10198595.md), 2021-06-29, Service bulletin: ELECTRICAL SYSTEM. Western Star Service Bulletin for Key Fob ID Retention. Key fobs for remote keyless entry on Western Star vehicles are delivered in packages that include a unique ID for the fob. The ID is required when pairing the key fob with a vehicle.
- [SS708\-WST2021](/bulletins/10198288.md), 2021-06-26, Service bulletin: ELECTRICAL SYSTEM. Western Star Service Solution for Low Voltage Disconnect \(LVD\) Troubleshooting: Western Star 5700 and New 4700.
- [SBW54\-057](/bulletins/10189332.md), 2021-03-25, Service bulletin: EQUIPMENT; ELECTRICAL SYSTEM. Western Star Service Bulletin for Powernet Troubleshooting Guide \- Batteries, Path, Alternator, and Starter. When troubleshooting powernet issues, use the BCT\-460DTNA PowerNet Assessment Tool. As of May 29, 2018, the AutoMeter is the only Daimler\-approved tool for troubleshooting vehicle Powernet issues.
- [WP21\-007](/bulletins/10189319.md), 2021-03-24, Service bulletin: EQUIPMENT; ELECTRICAL SYSTEM. Warranty Policy Letter for battery tags. DTNA determined that since adopting the AutoMeter BCT\-460DTNA Powernet Assessment Tool \(AutoMeter\) as the required powernet system tester, not all battery tags have to be retained support Warranty\-related claims.
- [WI21\-006](/bulletins/10187444.md), 2021-02-26, Service bulletin: ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. Warranty Information Letter for Detroit NOx Sensor Circuit Fault Codes \- Claim Guidelines.
- [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.
- [SBW54\-077](/bulletins/10181086.md), 2020-10-15, Service bulletin: ELECTRICAL SYSTEM. Western Star Service Bulletin for Ordering Options for Aftermarket Power Distribution Modules \(PDMs\). For certain Western Star 4700 or 5700 vehicles, power distribution modules \(PDMs\) are typically ordered in the aftermarket by serial number and populated with fuses and circuit breakers. It may take up to three weeks for a serial number specific PDM to be processed, made, and shipped to a dealership. In order to reduce the down time of a vehicle, an alternative PDM may be ordered fully populated with fuses and circuit breakers and delivered the next day. A cost increase may be associated with this option.
- [TechTalk7169](/bulletins/10180359.md), 2020-09-30, Service bulletin: ELECTRICAL SYSTEM; EQUIPMENT. Tech Talk discussion on blue tooth volume drop out on Western Star. Service Bulletin 54\-074 was released on this issue.
- [TechTalk3253](/bulletins/10180082.md), 2020-09-25, Service bulletin: VEHICLE SPEED CONTROL; ELECTRICAL SYSTEM. Tech Talk Discussion for a Western Star 5700 fault code 2049\-9 and 527\-9.

JSON: [/v1/bulletins/10194820](/v1/bulletins/10194820)

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