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Service bulletin FSB-49-7

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 id10046742
Published by NHTSA2012-10-23
Manufacturer's numberFSB-49-7
Manufacturer's date2012-09-01
NHTSA componentFUEL SYSTEM, OTHER:STORAGE:FUEL GAUGE SYSTEM; FUEL SYSTEM, DIESEL

NHTSA's summary

FREIGHTLINER: DIESEL EXHAUST FLUID (DEF) MAY CRYSTALLIZE, WHEN SITTING FOR AN EXTENDED LENGTH OF TIME, IN TANK, AROUND FLOAT, POSSIBLY CAUSING IT TO STICK, ON DEF LEVEL SENDING UNIT TUBE AND NEEDS TO BE CLEANED. *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

Fuel system

Vehicles listed
FREIGHTLINER RECREATIONAL VEHICLE
FREIGHTLINER S22009
FREIGHTLINER SHUTTLE BUS
FREIGHTLINER WALK-IN VAN

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