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Service bulletin SF-483-A

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 id10052653
Published by NHTSA2013-08-28
Manufacturer's numberSF-483-A
Manufacturer's date2013-06-01
NHTSA componentPARKING BRAKE

NHTSA's summary

DAIMLER TRUCKS: ON CERTAIN TRUCKS, ENGINE MAY NOT RECEIVE COMPLETE PARK BRAKE ENGAGED INPUT SIGNAL FROM ELECTRONIC CONTROL CENTER (ECC), AND WILL BE MODIFIED, BY MOVING PARK BRAKE INPUT SIGNAL TO AN INDEPENDENT AIR SWITCH. MODEL 2010-2013 4700, 4900, 6900. *PE

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Brakes, Parking brake

Vehicles listed
WESTERN STAR 47002010, 2011, 2012, 2013
WESTERN STAR 49002010, 2011, 2012, 2013
WESTERN STAR 69002010, 2011, 2012, 2013

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

Other bulletins for the same vehicles and component
SF4832018-06-18. Service bulletin. SF483-DLR Western Star ECC Park Brake Output Signals