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Service bulletin TechTalk7766

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10182007
Published by NHTSA2020-11-03
Manufacturer's numberTechTalk7766
Manufacturer's date2020-10-09
NHTSA componentELECTRICAL SYSTEM; VISIBILITY

NHTSA's summary

Tech Talk discussion on Western Star wipers. Wipers won't turn off.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system, Glass, wipers and mirrors

Vehicles listed
WESTERN STAR 57002019

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
20216972021-11-12. Electrical
21V8820002021-11-12. ELECTRICAL SYSTEM:WIRING
20211722021-03-24. Electrical
21V2060002021-03-24. ELECTRICAL SYSTEM:WIRING
20202172020-05-18. Electrical
20V2810002020-05-18. ELECTRICAL SYSTEM:WIRING
19V7920002019-11-04. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:REAR WINDOW
18V1910002018-03-26. ELECTRICAL SYSTEM:WIRING

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
SBW83-0302022-07-02. Service bulletin. Updated Western Star Service Bulletin for HVAC Actuator Replacement
ICI21-0302021-11-03. Service bulletin. SF626 Western Star Window Replacement Inspection Notification. This letter is to inform you that Field Service Campaign SF626 Western Star Window Replacement Inspection Notification campaign was released.
SBW54-0802021-06-29. Service bulletin. 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-WST20212021-06-26. Service bulletin. Western Star Service Solution for Low Voltage Disconnect (LVD) Troubleshooting: Western Star 5700 and New 4700.
WSTCAE170-20192021-05-18. Service bulletin. New Valeo A/C Compressor
SBW54-0572021-03-25. Service bulletin. 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.
WP21-0072021-03-24. Service bulletin. 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.
WI21-0062021-02-26. Service bulletin. Warranty Information Letter for Detroit NOx Sensor Circuit Fault Codes - Claim Guidelines.
TechTalk73942021-02-02. Service bulletin. Tech Talk discussion on 2019 Western Start Door Speakers INOP. Also discusses Speaker interrupts for 2018 M2.
TechTalk77742020-11-03. Service bulletin. Tech Talk discussion on SS 1034711 HADLEY MIRROR