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Service bulletin SF-393-AB

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 id10026181
Published by NHTSA2008-10-06
Manufacturer's numberSF-393-AB
Manufacturer's date2008-06-01
NHTSA componentELECTRICAL SYSTEM:12V/24V/48V BATTERY:CABLES; ELECTRICAL SYSTEM:12V/24V/48V BATTERY

NHTSA's summary

FREIGHTLINER (WESTERN STAR 4900): BATTERY DISCONNECT SWITCHES-SANJEL CORP. ONLY. THE WIRING FOR THE BATTERY DISCONNECT SWITCH IS NOT CONSISTENT AMONG VEHICLES. EXISTING BATTERY DISCONNECT SWITCHES WILL BE REPLACED. CSC LETTER WAS RECEIVED. *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

Electrical system, 12-volt battery

Vehicles listed
FREIGHTLINER WESTERN STAR2003 to 2006

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