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Service bulletin FL639

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 id10142374
Published by NHTSA2018-06-25
Manufacturer's numberFL639
Manufacturer's date2013-05-01
NHTSA componentELECTRICAL SYSTEM; EQUIPMENT

NHTSA's summary

FL639-DLR SmartPlex Switch Hub Module

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, Equipment and accessories

Vehicles listed
THOMAS BUILT BUSES SAF-T-LINER C22013

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